Engine Difficult to Start [11/2018 - 08/2020]: Procedure

1. Interview the customer for details about the conditions when the engine was difficult to start.

   HINT: 

   In addition to the usual questions, be sure to ask the customer about the specific details when the problem symptoms occurred.

   Condition When Problem Symptom Occurred	Suspected Area
   After refueling at an unfamiliar gas station, the engine became difficult to start.	Fuel quality
   After the addition of fuel additives, the engine became difficult to start.	Addition of fuel additive
   Only after leaving the vehicle for a long time, the engine becomes difficult to start.	Leaking fuel injector assembly
   The vehicle mostly driven for short distances only.	Formation of carbon deposits on spark plug

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Perform a road test.
5. Enter the following menus: Powertrain / Engine / Trouble Codes.
6. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTC is output	B

Result: 

B 

GO TO DTC CHART 

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 08/2020]

Result: 

A 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB)

   Powertrain > Engine > Utility 

   Tester Display
   Vehicle Control History (RoB)

   HINT: 

   It is also possible to display Vehicle Control History during the Health Check, if "Store All Data" is selected.

5. Confirm if any data relating to the problem symptoms exist in the Vehicle Control History.

   HINT: 

   • The vehicle condition when the problem symptoms occurred can be determined by confirming the Vehicle Control History Freeze Frame Data.
   • As the Vehicle Control History data may be overwritten whenever the trigger conditions are met, make sure to save the Vehicle Control History data before performing any inspections.
   • Using information from the customer about when the problem symptom occurred, find the Freeze Frame Data with the appropriate Key Cycle, Total Distance Traveled, etc., to find vehicle history that may be related to the problem symptoms.
6. Check if the problem symptoms stated by the customer are currently occurring.

   HINT: 

   • By using snapshot to store the Data List, the Data List items can be compared to the Vehicle Control History.
   • If the problem symptoms cannot be reproduced, refer to Check for Intermittent Problems, and try to reproduce the conditions when the problem symptoms occurred as stated by the customer. If the problem symptoms still cannot be reproduced, perform the following procedure.

     Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2018 - 08/2020]

7. Read the Data List or the Vehicle Control History Freeze Frame Data.

   HINT: 

   • If the malfunction is currently occurring, compare the values of the Data List items with the Vehicle Control History Freeze Frame Data.
   • If the malfunction is not currently occurring, read the Vehicle Control History Freeze Frame Data.

   Result

   Vehicle Control History	Vehicle Control History Freeze Frame Data / Data List While Problem Symptoms Are Occurring	Suspected Area	Proceed to
   Engine Difficult to Start (Engine Starting Time Long) is stored (Vehicle Control History Code: X0810)	Engine speed is 0 rpm (engine does not crank)	Battery depletion, excessive engine friction, starter malfunction or crankshaft position sensor malfunction	A
   	Engine speed is between 100 and 500 rpm (engine cranks but combustion does not occur, initial combustion delays or combustion occurs late)	Ignition system, fuel system malfunction or wire harness	B
   Engine Difficult to Start (Engine Stall Immediately After Starting) is stored (Vehicle Control History Code: X0811)	-	Improper fuel injection volume (too low or too high) If Long FT is out of specified range: insufficient fuel supply due to clogging of injectors or fuel pump If engine cranking speed is high: compression loss due to deposits caught on valves	B
   	ISC F/B Learn Torque is 15 Nm or higher	The offset correction value is insufficient due to deposits in the throttle body causing a low idle air flow rate.	C
   Engine Difficult to Start (Immobiliser) is stored (Vehicle Control History Code: X0812)	-	The engine stalled due to operation of immobiliser system. Check the immobiliser system for malfunctions. (w/o Smart Key System)	D
   		The engine stalled due to operation of immobiliser system. Check the immobiliser system for malfunctions. (w/ Smart Key System)	E
   The malfunction is not currently occurring and there is no Vehicle Control History related to the problem symptoms stated by the customer.			B

Result: 

A 

See step  6

Result: 

C 

See step  32

Result: 

D 

GO TO IMMOBILISER SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 08/2020]

Result: 

E 

GO TO SMART KEY SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 08/2020]

Result: 

B 

See step  4

1. Check the interview result.

   Result

   Result	Proceed to
   Engine is difficult to start only when the vehicle has been left as is for a long time (1 hour or more)	A
   Other than above	B

Result: 

B 

See step  6

Result: 

A 

See step  5

1. Clean the inside of the intake manifold with compressed air.
2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.

   Result

   Result	Proceed to
   Less than 4000 ppm	A
   4000 ppm or higher	B

   HINT: 

   • If the concentration is 4000 ppm or higher, a fuel injector assembly may have a sealing problem.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly.

     Refer to INITIALIZATION [11/2018 - 08/2020]

Result: 

A 

See step  6

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

1. Check the engine cranking operation.

   Result

   Result	Proceed to
   The engine does not crank or cranks slowly	A
   The engine cranks normally	B

Result: 

B 

See step  8

Result: 

A 

See step  7

1. Inspect the battery.

   Refer to PROCEDURE - Step 1

   Result

   Proceed to
   OK
   NG

Result: 

OK 

CHECK STARTER SIGNAL CIRCUIT 

Refer to Starter Signal Circuit [11/2018 - 08/2020] 

Result: 

NG 

CHARGE OR REPLACE BATTERY 

1. Check if the problem symptoms reported in the customer problem analysis recur.

   HINT: 

   If the problem symptoms do not recur, attempt to reproduce the conditions when the malfunction occurred based on the result of the customer problem analysis.

   Result

   Result	Proceed to
   The problem symptom recurs	A
   The problem symptom does not recur (occurred in the past)	B

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS 

Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2018 - 08/2020]

Result: 

A 

See step  9

1. Check that the engine starts or there is initial combustion.

   HINT: 

   If there is no initial combustion, perform a simple spark test by removing the bolt of the ignition coil assembly, partially lifting the ignition coil assembly, and checking for spark.

   Refer to PROCEDURE - Step 2

   Result

   Result	Proceed to
   The engine starts or there is initial combustion	A
   There is no initial combustion and no spark occurs	B

Result: 

B 

See step  34

Result: 

A 

See step  10

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / ISC F/B Learn Torque.

   Powertrain > Engine > Data List 

   Tester Display
   ISC F/B Learn Torque

5. Read the value displayed on the Techstream.

   Result

   Result	Proceed to
   Less than 15 Nm	A
   Other than above	B

Result: 

B 

See step  32

Result: 

A 

See step  11

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Short FT B1S1 and Long FT B1S1.

   Powertrain > Engine > Data List 

   Tester Display
   Short FT B1S1
   Long FT B1S1

5. Read the value displayed on the Techstream.

   Result

   Data List	Result	Proceed to
   Short FT B1S1 + Long FT B1S1	-20% or higher, or less than 20%	A
   	Other than above	B

   HINT: 

   • "Total FT Bank 1" is used to detect an abnormal air fuel ratio. As the value of "Total FT Bank 1" is corrected by the ECM before it is displayed in the Data List, the displayed value may not be equal to the sum of the measured "Short FT B1S1" and "Long FT B1S1".
   • An abnormally lean or rich tendency can be checked by reading the following Data List items: A/F Learn Value Idle Bank 1, A/F Learn Value Low Bank 1, A/F Learn Value Mid No. 1 Bank 1, A/F Learn Value Mid No. 2 Bank 1, A/F Learn Value High Bank 1, A/F Learn Value Idle (Port) Bank 1, A/F Learn Value Low (Port) Bank 1, A/F Learn Value Mid No. 1 (Port) Bank 1, A/F Learn Value Mid No. 2 (Port) Bank 1, A/F Learn Value High (Port) Bank 1, A/F Learn Value Low (Dual) Bank 1, A/F Learn Value Mid (Dual) No. 1 Bank 1, A/F Learn Value Mid (Dual) No. 2 Bank 1 and A/F Learn Value High (Dual) Bank 1.
   • The following may cause a lean air fuel ratio (an operating range in which the air fuel ratio learned value correction is +20% or more):
     1. Decrease in fuel injector assembly injection volume
     2. Decrease in mass air flow meter sub-assembly output (due to existence of foreign matter)
     3. Air leaks in intake system after mass air flow meter sub-assembly
     4. Decrease in fuel pressure (at fuel filter, fuel pump, fuel main valve assembly or fuel suction plate sub-assembly)
   • On vehicles which the learning value for each operating range can be checked, if the value of "A/F Learn Value High (Port) Bank 1", "A/F Learn Value High Bank 1" or "A/F Learn Value High (Dual) Bank 1" only is corrected to the positive side, a malfunction in the fuel system (clogging of the fuel pump or fuel filter) is suspected.
   • On vehicles which the learning value for each operating range can be checked, if the value of "A/F Learn Value Idle (Port) Bank 1", "A/F Learn Value Low (Port) Bank 1", "A/F Learn Value Idle Bank 1", "A/F Learn Value Low Bank 1" or "A/F Learn Value Low (Dual) Bank 1" only is corrected to the positive side, an air leak after the mass air flow meter sub-assembly is suspected.
   • The following may cause a rich air fuel ratio (an operating range in which the air fuel ratio learned value correction is -20% or less):
     1. Increase in the fuel injector assembly injection volume
     2. Purge VSV system

Result: 

B 

See step  20

Result: 

A 

See step  12

1. Connect the Techstream to the DLC3.
2. Start the engine.

   HINT: 

   Reproduce the vehicle conditions when the malfunction occurred. (such as after the engine is warmed up or after a cold start).

3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / D-4S (Fuel Cut) / Data List / Engine Speed.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Fuel Cut)

   Data List Display
   Engine Speed

5. According to the display on the Techstream, perform the Active Test and check for a malfunctioning cylinder.

   HINT: 

   • Perform fuel-cut of port injection and direct injection for each cylinder and check the change in the engine speed.
   • If the engine speed of a cylinder does not change while performing the Active Test, it can be determined that the cylinder is malfunctioning.
   • If the engine speed of all cylinders change while performing the Active Test, it can be determined that multiple cylinders are malfunctioning.
   • A cylinder for which the Data List item "Misfire Count Cylinder #1 to #4" increases may be malfunctioning.

   Result

   Result	Proceed to
   One cylinder is malfunctioning	A
   Multiple or all cylinders are malfunctioning, or the malfunctioning cylinder cannot be determined.	B

Result: 

B 

See step  19

Result: 

A 

See step  13

HINT: 

If the vehicle does not support the Active Test "Check the Cylinder Compression", measure the compression pressure. If the compression pressure is normal, go to step 14 (PERFORM ACTIVE TEST USING Techstream (D-4S (INJECTION VOLUME))).

1. Warm up the engine.
2. Turn the ignition switch off.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Active Test / Check the Cylinder Compression / Data List / Compression / Engine Speed Cylinder #1 to #4 and Average Engine Speed of All Cylinder.

   Powertrain > Engine > Active Test 

   Active Test Display
   Check the Cylinder Compression

   Data List Display
   Engine Speed Cylinder #1
   Engine Speed Cylinder #2
   Engine Speed Cylinder #3
   Engine Speed Cylinder #4
   Average Engine Speed of All Cylinder

   HINT: 

   To display the entire Data List, press the pull down menu button next to Primary. Then select Compression.

7. Push the snapshot button to turn the snapshot function on.

   HINT: 

   Using the snapshot function, data can be recorded during the Active Test.

8. While the engine is not running, press the Active button to change Check the Cylinder Compression to "Start".

   HINT: 

   After performing the above procedure, Check the Cylinder Compression will start. Fuel injection for all cylinders is prohibited and each cylinder engine speed measurement enters standby mode.

9. Crank the engine for about 10 seconds.
10. Monitor the engine speed (Engine Speed Cylinder #1 to #4 and Average Engine Speed of All Cylinder) displayed on the Techstream.
    NOTE:

    • Do not crank the engine continuously for 20 seconds or more.
    • If it is necessary to crank the engine again after Check the Cylinder Compression has been changed to "Start" and the engine has been cranked once, press Exit to return to the Active Test menu screen. Then change Check the Cylinder Compression to "Start" and crank the engine.
    • Make sure the battery is fully charged before performing this Active Test.

    HINT: 

    • At first, the Techstream will display extremely high cylinder engine speed values. After approximately 10 seconds of engine cranking, the engine speed measurement of each cylinder will change to the actual engine speed.
    • If the cylinder engine speed values (Engine Speed Cylinder #1 to #4) displayed in the Data List do not change from an extremely high value, return to the Active Test menu screen, change "Check the Cylinder Compression" to "Start" and crank the engine again within 1 second.
11. Stop cranking the engine, and then change "Check the Cylinder Compression" to "Stop" after the engine stops.
    NOTE:

    • If the Active Test is changed to "Stop" while the engine is being cranked, the engine will start.
    • When performing the Active Test, Vehicle Control History code X0810 (Engine Difficult to Start (Engine Starting Time Long)) may be stored.
    • After performing the Active Test, make sure to check and clear DTCs.
12. Push the snapshot button to turn the snapshot function off.
13. Select "Stored Data" on the Techstream screen, select the recorded data and display the data as a graph.

    HINT: 

    If the data is not displayed as a graph, the change of the values cannot be observed.

14. Read the value.

    HINT: 

    • If the value of Data List item "Engine Speed Cylinder" of a cylinder is higher than other cylinders, the cylinder may be malfunctioning.
    • If the value of Data List item "Engine Speed Cylinder" is high for only one cylinder, compression loss is suspected.

    Result

    Result	Proceed to
    There is no variation in "Engine Speed Cylinder" (All cylinders display approximately the same value for "Engine Speed Cylinder")	A
    There is variation in "Engine Speed Cylinder" (Only one cylinder displays a value for "Engine Speed Cylinder" that differs considerably)	B

Result: 

B 

See step  18

Result: 

A 

See step  14

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
5. Idle the engine.
6. Enter the following menus: Powertrain / Engine / Active Test / D-4S (Injection Volume) / Data List / Coolant Temperature.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Injection Volume)

   Data List Display
   Coolant Temperature

7. According to the display on the Techstream, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume of port injection and direct injection.

   HINT: 

   • Increase and decrease the fuel injection volume of the port injection and direct injection simultaneously and check the vehicle condition.
   • Change the fuel injection volume between the minimum and maximum range of correction (e.g. -12.5% to 24.8%).

   Result

   Result	Proceed to
   Malfunction is still present even if the fuel injection volume is changed	A
   Malfunction disappears when the fuel injection volume is changed	B

Result: 

B 

See step  17

Result: 

A 

See step  15

1. Check the ignition system.

   HINT: 

   • Interchange the ignition coil assembly and spark plug of the malfunctioning cylinder with those of a known good cylinder and check if the malfunctioning cylinder returns to normal.
   • If the spark plug of the malfunctioning cylinder is abnormally wet with fuel even after the ignition coil assembly and spark plug are replaced, a leaking fuel injector assembly is suspected.

   Result

   Result	Proceed to
   The malfunctioning cylinder does not return to normal	A
   The malfunctioning cylinder returned to normal	B

Result: 

B 

See step  35

Result: 

A 

See step  16

1. Check the power source circuit, wire harness and connectors.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Replace the abnormal fuel injector assembly.

   HINT: 

   • If the air fuel ratio learned value is corrected to the positive side for all operating ranges due to low fuel injector assembly injection volume, replace the fuel injector assemblies of all cylinders.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly.

     Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Measure the cylinder compression pressure. If the compression pressure of a cylinder is low, inspect the engine assembly and repair or replace parts as necessary.

   Refer to PROCEDURE - Step 11

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

   HINT: 

   The A/C switch and all accessory switches should be off.

5. Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Engine Speed and Coolant Temperature.

   Powertrain > Engine > Active Test 

   Active Test Display
   Control the EGR Step Position

   Data List Display
   Engine Speed
   Coolant Temperature

6. Perform the Active Test and check the vehicle condition when operating the EGR valve assembly.
   NOTE:

   • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
   • Be sure to return the EGR valve to step 0 when the Active Test is completed.
   • Do not open the EGR valve 30 steps or more during the Active Test.

   HINT: 

   Operate the EGR valve between step 0 and 30 when performing this step.

   Result

   Result	Proceed to
   Vehicle condition changes during the Active Test (Malfunction occurs when the EGR valve is open and disappears when the EGR valve is closed)	A
   Vehicle condition does not change during the Active Test (Malfunction occurs whether the EGR valve is open or closed)	B

   HINT: 

   During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve.

Result: 

B 

See step  31

Result: 

A 

See step  20

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
5. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.

   Powertrain > Engine > Data List 

   Tester Display
   Engine Speed
   Mass Air Flow Sensor
   Coolant Temperature

6. According to the display on the Techstream, read the Data List when the engine is running.

   Result

   Result	Proceed to
   Idling (engine warmed up): 1.2 to 3.2 gm/sec Engine speed 2000 rpm (without load): 4.5 to 8.5 gm/sec Engine speed 3000 rpm (without load): 7.5 to 12.5 gm/sec	A
   Other than below	B

Result: 

B 

See step  30

Result: 

A 

See step  21

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
5. Warm up the air fuel ratio sensors at an engine speed of 2500 rpm for 90 seconds.
6. Idle the engine.
7. Enter the following menus: Powertrain / Engine / Active Test / D-4S (Injection Volume) / Data List / Coolant Temperature, A/F (O2) Sensor Current B1S1 and A/F (O2) Sensor Current B1S2.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Injection Volume)

   Data List Display
   Coolant Temperature
   A/F (O2) Sensor Current B1S1
   A/F (O2) Sensor Current B1S2

8. According to the display on the Techstream, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume of port injection and direct injection.
   NOTE:

   • The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.
   • Read the output current immediately after warming up the air fuel ratio sensors to avoid an inaccurate reading due to a sensor cooling.

   HINT: 

   • Increase and decrease the fuel injection volume of the port injection and direct injection simultaneously and check the vehicle condition.
   • Change the fuel injection volume between -12 to 12%.

   Standard

   Techstream Display (Sensor)	Injection Volume	Current
   A/F (O2) Sensor Current B1S1 (Air fuel ratio (sensor 1))	12%	Below -0.075 mA
   	-12%	More than 0.037 mA
   A/F (O2) Sensor Current B1S2 (Air fuel ratio (sensor 2))	12%	Below -0.86 mA
   	-12%	More than 0.33 mA

   Result

   Result	Proceed to
   Output current values are abnormal	A
   Malfunction disappears when fuel injection volume is increased	B
   Malfunction is still present when fuel injection volume is increased, even if output current values are normal	C

Result: 

B 

See step  23

Result: 

C 

See step  24

Result: 

A 

See step  22

1. Replace the air fuel ratio sensor (sensor 1).

   Refer to REMOVAL [11/2018 - 08/2020]

   HINT: 

   Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).

   Refer to INITIALIZATION [11/2018 - 08/2020]

2. Replace the air fuel ratio sensor (sensor 2).

   Refer to REMOVAL [11/2018 - 08/2020]

   HINT: 

   Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

   Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Replace the fuel injector assemblies of all cylinders.

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly.

   Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.

   Powertrain > Engine > Active Test 

   Tester Display
   Activate the Circuit Relay

5. When performing the Active Test, check for an operating sound from the fuel pump (for low pressure side).

   OK

   Activate the Circuit Relay	Specified Condition
   ON	Operating sound heard
   OFF	Operating sound not heard

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  29

Result: 

OK 

See step  25

1. Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine.

   Refer to PROCEDURE - Step 2

   Standard

   Vehicle State	Specified Condition
   Cranking engine	196 to 833 kPa (2.0 to 8.5 kgf/cm 2 , 28 to 121 psi)
   5 minutes after stopping engine	98 kPa (1.0 kgf/cm 2 , 14.2 psi) or higher

   HINT: 

   • If there is foreign matter such as iron particles on the fuel pump, remove it.
   • Make sure that there are no leaks from the fuel lines, signs of fuel leakage or fuel odors.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  28

Result: 

OK 

See step  26

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Coolant Temperature, Fuel Pressure (High) and Injection Mode.

   Powertrain > Engine > Data List 

   Tester Display
   Engine Speed
   Coolant Temperature
   Fuel Pressure (High)
   Injection Mode

5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.
6. According to the display on the Techstream, read the Data List.

   Standard

   Techstream Display	Condition	Specified Condition
   Fuel Pressure (High)	Shift position: P A/C: Off Engine warmed up Engine Speed: 3000 rpm Injection Mode: Direct	2400 to 20000 kPag

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  35

Result: 

OK 

See step  27

1. Inspect other related components.

   HINT: 

   If the malfunctioning part could not be determined by performing the preceding inspections, one of the following malfunctions is suspected.

   • Deposits in the intake manifold or on an intake valve
   • Delay in fuel supply due to adherence of the fuel to the deposits

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Inspect the following fuel pump related parts:
   • Fuel suction plate sub-assembly
   • Fuel main valve assembly
   • Fuel lines and connecting parts
   • Fuel filter

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Replace the fuel pump (for low pressure side).

   Refer to REMOVAL [11/2018 - 08/2020]

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).

   Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Check for air leaks or blockage in the intake system components. If a connection problem or foreign matter is found, repair the connection or remove the foreign matter.

   HINT: 

   • If there is foreign matter in the intake system components, remove it before proceeding to the next step.
   • If there is no foreign matter in the intake system components, check for foreign matter in the mass air flow meter sub-assembly. If there is foreign matter in the mass air flow meter sub-assembly, remove it.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Replace the EGR valve assembly.

   Refer to REMOVAL [11/2018 - 08/2020]

   HINT: 

   Perform "Inspection After Repair" after replacing the EGR valve assembly.

   Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Clean off any deposits from the inside of the throttle body with motor assembly.
2. Push open the throttle valve and wipe off any carbon from the valve and bore using a piece of cloth soaked in non-residue solvent.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Throttle Body with Motor Assembly	*2	Bore
   *3	Valve	-	-
   *a	Reference	*b	Throttle Body with Motor Assembly Cross-section Diagram
   *c	When valve fully opened	*d	Do not directly apply cleaner
   *e	Deposits	-	-

   NOTE:

   • Make sure that the cloth or your fingers do not get caught in the valve.
   • Make sure that foreign matter does not enter the throttle valve.
   • Do not directly apply non-residue solvent to the throttle body with motor assembly or wash the throttle body with motor assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems.
   • If there is coating material on the edge of the valve, be careful not to remove it.

   HINT: 

   The illustrations are for reference only. Actual parts may differ.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33

1. Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.

   Refer to INITIALIZATION [11/2018 - 08/2020]

2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
6. Allow the engine to idle for 3 minutes or more and confirm that the engine speed is within the specified range.

   HINT: 

   If the engine is operated without performing learning value reset and idle learning after cleaning the deposits from the throttle body with motor assembly, the idle speed may increase.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Perform a spark test.

   Refer to PROCEDURE - Step 1

   HINT: 

   • If there is a malfunction for a specific cylinder, exchange the ignition coil assembly and spark plug of the malfunctioning cylinder with that of another cylinder and check if the malfunction disappears.
   • If the malfunction does not disappear after the ignition coil assembly and spark plug is exchanged or spark does not occur for any cylinder, inspect the ignition circuit.

     Refer to Ignition Circuit [11/2018 - 08/2020] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  35

1. Repair or replace the malfunctioning part.

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the malfunctioning part.

   Refer to INITIALIZATION [11/2018 - 08/2020]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  36

1. Check that the engine has returned to normal.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END