EVAP System: Procedure

1. Turn the power switch off and wait 10 seconds.
2. Turn the power switch on (IG).
3. Turn the power switch off and wait 10 seconds.
4. Connect the Techstream to the DLC3.
5. Turn the power switch on (IG) and turn the Techstream on.
6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
7. Confirm the DTCs and freeze frame data.
   EVAP RELATED DTCS
   
   

   DTC No.	Monitoring Item
   P043E	Reference orifice low flow
   P043F	Reference orifice high flow
   P0441	Purge VSV stuck closed Purge VSV stuck open Insufficient purge flow
   P1420	Small leak from canister
   P1421	Gross leak from canister
   P1422	Small leak from fuel tank
   P1423	Gross leak from fuel tank
   P2401	Leak detection pump stuck OFF
   P2402	Leak detection pump stuck ON
   P2419	Vent valve stuck ON (closed)
   P2420	Vent valve stuck OFF (vent)
   P2450	Fuel vapor-containment valve stuck open
   P2451	Fuel vapor-containment valve stuck closed

   DTC AND MALFUNCTION CROSS-REFERENCE
   
   

   Malfunction	Output DTC
   Reference orifice low flow	P043E, P043F, P2401, P2402, P2419
   Reference orifice high flow	P043E, P043F, P2401, P2402, P2419
   Leak detection pump stuck OFF	P043E, P043F, P2401, P2402, P2419
   Leak detection pump stuck ON	P043E, P043F, P2401, P2402, P2419
   Vent valve stuck ON (closed)	P043E, P043F, P2401, P2402, P2419
   Vent valve stuck OFF (vent)	P2420
   Insufficient purge flow	P0441
   Purge VSV stuck open	P0441, P1421
   Purge VSV stuck closed	P0441
   Small leak from canister	P1420
   Gross leak from canister	P0441, P1421
   Small leak from fuel tank	P1422
   Gross leak from fuel tank	P1423
   Fuel vapor-containment valve stuck open	P1423, P2450
   Fuel vapor-containment valve stuck closed	P2451

NEXT: Go to next step 

1. Clear the DTCs.
2. Remove the fuel tank cap and reinstall the fuel cap.
3. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
4. After the Evaporative System Check is completed, check for pending DTCs.
   RESULT
   
   

   Result	Conclusion	Proceed to
   A pending DTC is stored	A malfunction occurs and troubleshooting can be performed	A
   A pending DTC is not stored	No malfunctions occur and it is difficult to perform troubleshooting	B
   A pending DTC is not stored and any of the current DTCs (P1422, P1423, or P2450) is stored	DTCs are stored because the fuel tank cap is not tightened firmly	C

B → See step   37 

C → END 

A: Go to next step 

1. Refer to the table below to determine the next procedure according to the output DTCs.
   RESULT
   
   

   Malfunction	Output DTC	Proceed to
   Reference orifice low flow	P043E, P043F, P2401, P2402 and P2419	B
   Reference orifice high flow	P043E, P043F, P2401, P2402 and P2419	B
   Leak detection pump stuck off	P043E, P043F, P2401, P2402 and P2419	B
   Leak detection pump stuck on	P043E, P043F, P2401, P2402 and P2419	B
   Vent valve stuck on (closed)	P043E, P043F, P2401, P2402 and P2419	B
   Vent valve stuck off (vent)	P2420	C
   Insufficient purge flow	P0441	A
   Purge VSV stuck open	P0441 and P1421	A
   Purge VSV stuck closed	P0441	A
   Small leak from canister	P1420	D
   Gross leak from canister	P0441 and P1421	A
   Small leak from fuel tank	P1422	A
   Gross leak from fuel tank	P1423	A
   Fuel vapor-containment valve stuck open	P1423 and P2450	A
   Fuel vapor-containment valve stuck closed	P2451	A

B → See step   11 

C → See step   17 

D → See step   6 

A: Go to next step 

1. Refer to the table below to determine the next procedure according to the output DTCs.
   RESULT
   
   

   Malfunction	Output DTC	Proceed to
   Insufficient purge flow	P0441	A
   Purge VSV stuck open	P0441, P1421	A
   Purge VSV stuck closed	P0441	A
   Gross leak from canister	P0441, P1421	A
   Small leak from fuel tank	P1422	B
   Gross leak from fuel tank	P1423	B
   Fuel vapor-containment valve stuck open	P1423, P2450	C
   Fuel vapor-containment valve stuck closed	P2451	C

B → See step   22 

C → See step   25 

A: Go to next step 

1. Disconnect the hose (connected to the intake manifold) from the purge VSV.
   Fig 1: Identifying Purge VSV & Intake Manifold Hose

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
3. Start the engine.
4. Use your finger to confirm that the hose has suction.
   TEXT IN ILLUSTRATION
   
   

   *1	Purge VSV
   *2	Hose (to Intake Manifold)

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between purge VSV and intake manifold normal	A
   No suction	Intake manifold port EVAP hose between purge VSV and intake manifold	B

B → See step   33 

A: Go to next step 

1. Disconnect the hose (connected to the canister) from the purge VSV.
2. Connect the Techstream to the DLC3.
   Fig 2: Identifying Purge VSV & Hose (To Canister)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
6. Start the engine.
7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.
8. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).
9. Use your finger to confirm that the purge VSV has no suction.
10. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).
11. Use your finger to confirm that the purge VSV has suction.
    TEXT IN ILLUSTRATION
    
    

    *1	Purge VSV
    *2	Hose (to Canister)

    RESULT
    
    

    Result	Suspected Trouble Area	Proceed to
    Suction applied when purge VSV turned off	Purge VSV stuck open ECM	A
    No suction when purge VSV turned on	Purge VSV stuck closed	A
    No suction when purge VSV turned off, and suction applied when turned on	Purge VSV normal	B

B → See step   20 

A: Go to next step 

1. Remove the purge VSV.
   Fig 3: Checking Purge VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply compressed air to the purge VSV, and confirm that no air flows from A to B as shown in the illustration.
3. Apply auxiliary battery voltage to the purge VSV.
4. While applying compressed air, confirm that air flows from A to B as shown in the illustration.
   TEXT IN ILLUSTRATION
   
   

   *1

   Purge VSV

   RESULT
   
   

   Result	Proceed to
   Air flows from A to B only when auxiliary battery voltage applied to purge VSV. Conclusion: purge VSV is normal.	A
   No air flows from A to B when auxiliary battery voltage is applied to purge VSV. Conclusion: purge VSV is malfunctioning.	B
   Air flows from A to B when auxiliary battery voltage is not applied to purge VSV. Conclusion: purge VSV is malfunctioning.	B

B → See step   29 

A: Go to next step 

1. Disconnect the purge VSV connector.
   Fig 4: Identifying D11 Purge VSV Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Purge VSV)

   RESULT
   
   

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   D11-2 - Body ground	Power switch on (IG)	11 to 14 V	Normal	A
   		Other than result above	Wire harness or connectors between purge VSV and EFI MAIN relay	B

B → See step   36 

A: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the purge VSV connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D28-28 (PRG) - D11-1	Always	Below 1 Ω
   D28-28 (PRG) or D11-1 - Body ground	Always	10 kΩ or higher

NG → See step   36 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Connect the Techstream to DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
4. Turn the vacuum pump (leak detection pump) on with the Techstream.
5. Touch the canister pump module and check if the pump is moving.

   OK

   Pump operates

NG → See step   13 

OK: Go to next step 

1. Connect the Techstream to DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.
4. Touch the canister pump module, use the Techstream to turn the vent valve ON and OFF, and check if the vent valve is moving.

   OK

   Vent valve vibration can be felt.

OK → See step   30 

NG → See step   17 

1. Disconnect the canister pump module connector.
   Fig 5: Checking z32 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
5. Turn the vacuum pump (leak detection pump) on using the Techstream.
6. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   z32-3 (MTRB) - z32-4 (MGND)	Vacuum pump on using the Techstream	10 to 14 V
   	Vacuum pump off using the Techstream	Below 3 V

   TEXT IN ILLUSTRATION
   
   

   *a

   Front view of wire harness connector (to Canister Pump Module)

   -

   -

   RESULT
   
   

   Result	Proceed to
   Out of standard range	A
   Within standard range	B

B → See step   30 

A: Go to next step 

1. Disconnect the canister pump module connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z32-4 (MGND) - Body ground	Always	Below 1 Ω

NG → See step   36 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the canister pump module connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A57-34 (MPMP) - z32-3 (MTRB)	Always	Below 1 Ω
   A57-34 (MPMP) or z32-3 (MTRB) - Body ground	Always	10 kΩ or higher

NG → See step   36 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Disconnect the canister pump module connector.
   Fig 6: Checking Z32 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   z32-5 (VLVB) - Body ground	Power switch on (IG)	10 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a

   Front view of wire harness connector (to Canister Pump Module)

   -

   -

   RESULT
   
   

   Voltage	Proceed to
   Within standard range	A
   Out of standard range	B

B → See step   36 

A: Go to next step 

1. Disconnect the canister pump module connector.
   Fig 7: Inspecting Canister Pump Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply auxiliary battery voltage to VLVB and VGND terminals of the canister pump module.
3. Touch the canister pump module to confirm the vent valve operation.
   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Canister)

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Operating	ECM	A
   Not operating	Vent valve	B

B → See step   30 

A: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
   Fig 8: Identifying Canister Pump Module & EVAP Pressure Tester Tool

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Canister Pump Module	*2	Adapter
   *3	EVAP Pressure Tester Tool	-	-

2. Confirm good connection at the canister pump module.
3. Pressurize the EVAP system to between 3.2 and 3.7 kPa(gauge) [24 and 28 mmHg(gauge)].
   NOTE:

   Higher than 4.7 kPa(gauge) [35 mmHg(gauge)] of pressure will damage the EVAP system. Pay attention to the pressure.

4. Apply soapy water to the piping and connections of the EVAP system.
5. Look for areas where bubbles appear.

   HINT: 

   If the system has leaks, a whistling sound will be heard.

NEXT: Go to next step 

1. Repair or replace the leak point.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications.
2. Tighten the fuel cap until a few click sounds are heard.

   HINT: 

   If an EVAP tester is available, check the fuel cap using the tester.

   1. Remove the fuel cap and install it onto a fuel cap adapter.
   2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump.
   3. Seal the adapter and wait for 2 minutes.
   4. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or higher, the fuel cap is normal.
      RESULT
      
      

      Result	Suspected Trouble Area	Proceed to
      Fuel cap correctly installed	-	A
      Fuel cap loose	Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications	B

B → See step   32 

A: Go to next step 

1. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
   Fig 9: Identifying Canister Pump Module & EVAP Pressure Tester Tool

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Canister Pump Module	*2	Adapter
   *3	EVAP Pressure Tester Tool	-	-

2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Vapor-Containment Valve.
6. Turn the fuel vapor-containment valve ON using the Techstream.
7. Confirm good connection at the canister pump module.
8. Pressurize the EVAP system to between 3.2 and 3.7 kPa(gauge) [24 and 28 mmHg(gauge)].
   NOTE:

   Higher than 4.7 kPa(gauge) [35 mmHg(gauge)] of pressure will damage the EVAP system. Pay attention to the pressure.

9. Apply soapy water to the piping and connections of the EVAP system.
10. Look for areas where bubbles appear.

    HINT: 

    If the system has leaks, a whistling sound will be heard.

NEXT: Go to next step 

1. Repair or replace the leak point.

NEXT → PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION) 

1. Disconnect the fuel vapor-containment valve connector.
   Fig 10: Checking R53 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Vapor-Containment Valve)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   R53-2 (+B) - R53-1 (CCV)	Power switch on (IG)	10 to 14 V

NG → See step   36 

OK: Go to next step 

1. Inspect the fuel vapor-containment valve. Refer to INSPECTION .

NG → See step   31 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the fuel vapor-containment valve connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D28-25 (CCV2) - R53-1 (CCV)	Always	Below 1 Ω
   D28-25 (CCV2) or R53-1 (CCV) - Body ground	Always	10 kΩ or higher

NG → See step   36 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the purge VSV. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the canister. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the fuel vapor-containment valve. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the fuel cap.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Disconnect the EVAP hose from the intake manifold.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
6. Start the engine.
7. Use your finger to confirm that the port of the intake manifold has suction.
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between intake manifold and purge VSV	A
   No suction	Intake manifold	B

B → See step   35 

A: Go to next step 

1. Repair or replace the EVAP hose.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Repair or replace harness or connector.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

HINT: 

In the manual operation check, the EVAP system can be checked in several steps. Valve operation and pressure in each step can also be checked.

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Remove the fuel tank cap and reinstall the fuel tank cap.
3. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.
   NOTE:

   • The Evaporative System Check (Automatic Mode) consists of 9 steps performed automatically by the Techstream. It takes a maximum of approximately 40 minutes.
   • Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
   • Do not run the engine during this operation.
   • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
   TECHSTREAM DISPLAY
   
   

   Display	Detail
   Atmosphere Press Check	The number of steps and step names are displayed
   Purge VSV	Purge VSV condition is displayed: ON (Open)/OFF (Closed)
   Vent Valve	Vent valve condition is displayed: ON (Closed)/OFF (Open)
   Vacuum Pump	Leak detection pump condition is displayed: ON/OFF
   Fuel VCV	Fuel vapor-containment valve condition is displayed: ON (Open)/OFF (Closed)
   Tank Pressure	Fuel tank pressure (Absolute pressure)
   Vapor Pressure (Gauge)	EVAP pressure (Gauge pressure measured at canister pump module)
   Vapor Pressure (Absolute)	EVAP pressure (Absolute pressure measured at canister pump module)
   Time (Step)	Elapsed time for each step
   Time (VENT)	Accumulated vent valve open time
   Time (PUMP)	Accumulated leak detection pump operating time

   MANUAL OPERATION STEP
   
   

   Step	Operations
   1. Atmosphere Pressure Check	Atmospheric pressure measurement
   2. Reference Pressure (0.02 inch) Check 1	First reference pressure measurement
   3. Canister Leak Check	EVAP system pressure measurement
   4. Purge VSV Check	Purge VSV monitor
   5. Reference Pressure (0.02 inch) Check 2	Second reference pressure measurement
   6. Resetting	Resetting
   7. Tank Leak Check	Fuel tank pressure measurement
   8. Reference Pressure (0.02 inch) Check 3	Third reference pressure measurement
   9. Atmosphere Pressure Check	Atmospheric pressure measurement

   Fig 11: Identifying EVAP Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NEXT: Go to next step 

1. Select step 1 and wait 10 seconds.

NEXT: Go to next step 

1. Perform step 2.
2. Check the evaporative pressure 2 seconds after the leak detection pump is activated*. (step b)

   *: The leak detection pump begins to operate at the start of step 2.

   Fig 12: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check the evaporative (EVAP) pressure again when it has stabilized. This pressure is the first reference pressure.
   Fig 13: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   EVAP pressure in step (b) is between -4.75 kPa(gauge) [-35.63 mmHg(gauge)] and -0.957 kPa(gauge) [-7.178 mmHg(gauge)]	Not yet determined	A
   EVAP pressure in step (b) is -0.957 kPa(gauge) [-7.178 mmHg(gauge)] or higher	Reference orifice high-flow Leak detection pump stuck off	B
   EVAP pressure in step (b) is less than -4.75 kPa(gauge) [-35.63 mmHg(gauge)]	Reference orifice clogged	C

B → See step   53 

C → See step   72 

A: Go to next step 

1. Perform step 3.
2. Check the evaporative (EVAP) pressure change in step 3. (step b)
   Fig 14: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   EVAP pressure change in step (b) is 0.3 kPa(gauge) [2.2 mmHg(gauge)] or higher	Not yet determined	A
   EVAP pressure change in step (b) is less than 0.3 kPa(gauge) [2.2 mmHg(gauge)]	Vent valve (switching valve) stuck off	B

3. Check the fuel tank pressure change in step 3.
   Fig 15: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Fuel tank pressure change in step (b) is less than 0.5 kPa(gauge) [3.75 mmHg(gauge)]	Not yet determined	A
   Fuel tank pressure change in step (b) is higher than 0.5 kPa(gauge) [3.75 mmHg(gauge)]	Fuel vapor-containment valve stuck on (open)	C

4. Check the EVAP pressure again when it has stabilized. This pressure is the canister leak pressure.
5. Compare the first reference pressure with the canister leak pressure.
   Fig 16: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Lower than first reference pressure	Not yet determined	A
   First reference pressure or higher	Purge VSV stuck open Leakage from line between purge VSV and canister	D

B → See step   59 

C → See step   67 

D → See step   62 

A: Go to next step 

1. Perform step 4.
2. Check the evaporative (EVAP) pressure change in step 4. (step b)
   Fig 17: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   EVAP pressure in step (b) changes to 101 kPa(abs) [762 mmHg(abs)] or higher	Not yet determined	A
   EVAP pressure in step (b) remains below 101 kPa(abs) [762 mmHg(abs)]	Purge VSV stuck closed	B

B → See step   47 

A: Go to next step 

1. Perform step 5 and wait 60 seconds.
2. Check the evaporative (EVAP) pressure. This pressure is the second reference pressure.

NEXT: Go to next step 

1. Perform step 6 and wait 5 seconds.

NEXT: Go to next step 

1. Perform step 7.
2. Check that the tank pressure and EVAP pressure change.
3. Check the tank pressure again when it has stabilized. This pressure is the fuel tank leak pressure.
   Fig 18: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Fuel tank pressure change is higher than 0.5 kPa(gauge) [3.75 mmHg(gauge)] and EVAP pressure is higher than 0.9 (gauge) [6.76 mmHg(gauge)]	Not yet determined	A
   Fuel tank pressure change is less than 0.5 kPa(gauge) [3.75 mmHg(gauge)] and EVAP pressure is less than 0.9 (gauge) [6.76 mmHg(gauge)]	Fuel vapor-containment valve stuck OFF (closed)	B

B → See step   67 

A: Go to next step 

1. Perform step 8 and wait 60 seconds.
2. Check the evaporative (EVAP) pressure. This pressure is the third reference pressure.
3. Compare the fuel tank pressure checked in step 7 with the third reference pressure.
   Fig 19: Identifying Evap Pressure Timing Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Lower than third reference pressure	Not yet determined	A
   Third reference pressure or higher	Leakage from line between fuel vapor-containment valve and fuel tank	B

B → See step   64 

A: Go to next step 

1. Refer to Confirmation Driving Pattern.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Disconnect the hose (connected to the intake manifold) from the purge VSV.
   Fig 20: Identifying Purge VSV & Intake Manifold Hose

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
3. Start the engine.
4. Use your finger to confirm that the hose has suction.
   TEXT IN ILLUSTRATION
   
   

   *1	Purge VSV
   *2	Hose (to Intake Manifold)

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between purge VSV and intake manifold normal	A
   No suction	Intake manifold port EVAP hose between purge VSV and intake manifold	B

B → See step   75 

A: Go to next step 

1. Disconnect the hose (connected to the canister) from the purge VSV.
2. Connect the Techstream to the DLC3.
   Fig 21: Identifying Purge VSV & Hose (To Canister)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
6. Start the engine.
7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.
8. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).
9. Use your finger to confirm that the purge VSV has no suction.
10. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).
11. Use your finger to confirm that the purge VSV has suction.
    TEXT IN ILLUSTRATION
    
    

    *1	Purge VSV
    *2	Hose (to Canister)

    RESULT
    
    

    Result	Suspected Trouble Area	Proceed to
    Suction applied when purge VSV turned off	Purge VSV stuck open ECM	A
    No suction when purge VSV turned on	Purge VSV stuck closed	A
    No suction when purge VSV turned off, and suction applied when turned on	Purge VSV normal	B

B → See step   62 

A: Go to next step 

1. Remove the purge VSV.
   Fig 22: Checking Purge VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply compressed air to the purge VSV, and confirm that no air flows from A to B as shown in the illustration.
3. Apply auxiliary battery voltage to the purge VSV.
4. While applying compressed air, confirm that air flows from A to B as shown in the illustration.
   TEXT IN ILLUSTRATION
   
   

   *1

   Purge VSV

   RESULT
   
   

   Result	Proceed to
   Air flows from A to B only when auxiliary battery voltage applied to purge VSV. Conclusion: purge VSV is normal.	A
   No air flows from A to B when auxiliary battery voltage is applied to purge VSV. Conclusion: purge VSV is malfunctioning.	B
   Air flows from A to B when auxiliary battery voltage is not applied to purge VSV. Conclusion: purge VSV is malfunctioning.	B

B → See step   71 

A: Go to next step 

1. Disconnect the purge VSV connector.
   Fig 23: Identifying D11 Purge VSV Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Purge VSV)

   RESULT
   
   

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   D11-2 - Body ground	Power switch on (IG)	11 to 14 V	Normal	A
   		Other than result above	Wire harness or connectors between purge VSV and EFI MAIN relay	B

B → See step   78 

A: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the purge VSV connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D28-28 (PRG) - D11-1	Always	Below 1 Ω
   D28-28 (PRG) or D11-1 - Body ground	Always	10 kΩ or higher

NG → See step   78 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Connect the Techstream to DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
4. Turn the vacuum pump (leak detection pump) on with the Techstream.
5. Touch the canister pump module and check if the pump is moving.

   OK

   Pump operates

NG → See step   55 

OK: Go to next step 

1. Connect the Techstream to DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.
4. Touch the canister pump module, use the Techstream to turn the vent valve ON and OFF, and check if the vent valve is moving.

   OK

   Vent valve vibration can be felt.

OK → See step   72 

NG → See step   59 

1. Disconnect the canister pump module connector.
   Fig 24: Checking Canister Pump Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
5. Turn the vacuum pump (leak detection pump) on using the Techstream.
6. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   z32-3 (MTRB) - z32-4 (MGND)	Vacuum pump on using the Techstream	10 to 14 V
   	Vacuum pump off using the Techstream	Below 3 V

   TEXT IN ILLUSTRATION
   
   

   *a

   Front view of wire harness connector (to Canister Pump Module)

   -

   -

   RESULT
   
   

   Result	Proceed to
   Out of standard range	A
   Within standard range	B

B → See step   72 

A: Go to next step 

1. Disconnect the canister pump module connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z32-4 (MGND) - Body ground	Always	Below 1 Ω

NG → See step   78 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the canister pump module connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A57-34 (MPMP) - z32-3 (MTRB)	Always	Below 1 Ω
   A57-34 (MPMP) or z32-3 (MTRB) - Body ground	Always	10 kΩ or higher

NG → See step   78 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Disconnect the canister pump module connector.
   Fig 25: Checking Canister Pump Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   z32-5 (VLVB) - Body ground	Power switch on (IG)	10 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a

   Front view of wire harness connector (to Canister Pump Module)

   -

   -

   RESULT
   
   

   Result	Proceed to
   Within standard range	A
   Out of standard range	B

B → See step   78 

A: Go to next step 

1. Disconnect the canister pump module connector.
   Fig 26: Checking Canister Pump Module Harness & Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply auxiliary battery voltage to VLVB and VGND terminals of the canister pump module.
3. Touch the canister pump module to confirm the vent valve operation.
   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Canister)

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Operating	ECM	A
   Not operating	Vent valve	B

B → See step   72 

A: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
   Fig 27: Identifying Canister Pump Module & EVAP Pressure Tester Tool

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Canister Pump Module	*2	Adapter
   *3	EVAP Pressure Tester Tool	-	-

2. Confirm good connection at the canister pump module.
3. Pressurize the EVAP system to between 3.2 and 3.7 kPa(gauge) [24 and 28 mmHg(gauge)].
   NOTE:

   Higher than 4.7 kPa(gauge) [35 mmHg(gauge)] of pressure will damage the EVAP system. Pay attention to the pressure.

4. Apply soapy water to the piping and connections of the EVAP system.
5. Look for areas where bubbles appear.

   HINT: 

   If the system has leaks, a whistling sound will be heard.

NEXT: Go to next step 

1. Repair or replace the leak point.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications.
2. Tighten the fuel cap until a few click sounds are heard.

   HINT: 

   If an EVAP tester is available, check the fuel cap using the tester.

   1. Remove the fuel cap and install it onto a fuel cap adapter.
   2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump.
   3. Seal the adapter and wait for 2 minutes.
   4. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or higher, the fuel cap is normal.
      RESULT
      
      

      Result	Suspected Trouble Area	Proceed to
      Fuel cap correctly installed	-	A
      Fuel cap loose	Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications	B

B → See step   74 

A: Go to next step 

1. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
   Fig 28: Identifying Canister Pump Module & EVAP Pressure Tester Tool

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Canister Pump Module	*2	Adapter
   *3	EVAP Pressure Tester Tool	-	-

2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Vapor-Containment Valve.
6. Turn the fuel vapor-containment valve ON using the Techstream.
7. Confirm good connection at the canister pump module.
8. Pressurize the EVAP system to between 3.2 and 3.7 kPa(gauge) [24 and 28 mmHg(gauge)].
   NOTE:

   Higher than 4.7 kPa(gauge) [35 mmHg(gauge)] of pressure will damage the EVAP system. Pay attention to the pressure.

9. Apply soapy water to the piping and connections of the EVAP system.
10. Look for areas where bubbles appear.

    HINT: 

    If the system has leaks, a whistling sound will be heard.

NEXT: Go to next step 

1. Repair or replace the leak point.

NEXT → PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION) 

1. Disconnect the fuel vapor-containment valve connector.
   Fig 29: Checking R53 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Vapor-Containment Valve)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   R53-2 (+B) - R53-1 (CCV)	Power switch on (IG)	10 to 14 V

NG → See step   78 

OK: Go to next step 

1. Inspect the fuel vapor-containment valve. Refer to INSPECTION .

NG → See step   73 

OK: Go to next step 

1. Disconnect the ECM connector.
2. Disconnect the fuel vapor-containment valve connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D28-25 (CCV2) - R53-1 (CCV)	Always	Below 1 Ω
   D28-25 (CCV2) or R53-1 (CCV) - Body ground	Always	10 kΩ or higher

NG → See step   78 

OK: Go to next step 

1. Replace the ECM. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the purge VSV. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the canister. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the fuel vapor-containment valve. Refer to REMOVAL .

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Replace the fuel cap.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Disconnect the EVAP hose from the intake manifold.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
6. Start the engine.
7. Use your finger to confirm that the port of the intake manifold has suction.
   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between intake manifold and purge VSV	A
   No suction	Intake manifold	B

B → See step   77 

A: Go to next step 

1. Repair or replace EVAP hose.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE) 

1. Repair or replace harness or connector.

NEXT → PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)