Automatic Transmission - Diagnostics: Pre-Check

1. Description
   1. When troubleshooting OBD II vehicles, the only difference from the usual troubleshooting procedure is that you need to connect an OBD II scan tool complying with SAE J1987 or a hand-held tester to the vehicle, and read off various data output from the vehicle's ECM.
   2. OBD II regulations require that the vehicle's onboard computer illuminate the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in the computer itself or in the drive system components which affect the vehicle emissions. In addition to the MIL illuminating when a malfunction is detected, the applicable DTCs prescribed by SAE J2012 are recorded in the ECM memory (See DIAGNOSTIC TROUBLE CODE CHART  ).
      Fig 1: Identifying MIL

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the malfunction does not occur in 3 consecutive trips, the MIL goes off but the DTCs remain in the ECM memory.

   3. To check the DTCs, connect the OBD II scan tool or hand-held tester to the DLC3 of the vehicle. The OBD II scan tool or hand-held tester also enables you to erase the DTCs and check freeze frame data and various forms of engine data (For instruction book).
   4. The DTCs include SAE controlled codes and Manufacturer controlled codes. SAE controlled codes must be set as prescribed by the SAE, while Manufacturer controlled codes can be set freely by a manufacturer within the prescribed limits (See the DIAGNOSTIC TROUBLE CODE CHART  ).
   5. The diagnosis system operates in the normal mode during the normal vehicle use, and also has a check mode for technicians to simulate malfunction symptoms and perform troubleshooting. Most DTCs use 2 trip detection logic(*) to prevent erroneous detection. By switching the ECM to the check mode when troubleshooting, the technician can cause the MIL to light up for a malfunction that is only detected once or momentarily, (hand-held tester).
   6. *2 trip detection logic:

      When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same malfunction is detected again during the second test drive, this second detection causes the MIL to illuminate.

2. Inspect the DLC3.

   The vehicle's ECM uses ISO 9141-2 for communication. The terminal arrangement of DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.

   Fig 2: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TESTER CONNECTION AND SPECIFIED CONDITION CHART
   
   

   Tester connection	Condition	Specified condition
   7 (Bus + Line) - 5 (Signal ground)	During communication	Pulse generation
   4 (Chassis Ground) - Body	Always	1 Ω or less
   5 (Signal Ground) - Body	Always	1 Ω or less
   16 (B+) - Body	Always	9 to 14 V

   HINT:

   If your display shows UNABLE TO CONNECT TO VEHICLE when you have connected the cable of the OBD II scan tool or hand-held tester to the DLC3, turned the ignition switch ON and operated the scan tool, there is a problem on the vehicle side or tool side.

   • If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
   • If the communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.
3. Inspect the battery voltage.

   Battery Voltage: 11 to 14 V 

   If voltage is below 11 V, recharge the battery before proceeding.

4. Check the MIL.
   1. The MIL comes on when the ignition switch is turned ON and the engine is not running.

      HINT:

      If the MIL does not light up, troubleshoot the combination meter (See INSPECTION ).

   2. When the engine is started, the MIL should go off. If the lamp remains on, it means that the diagnosis system has detected a malfunction or abnormality in the system.

DTC CHECK 

1. Checking DTCs using the OBD II scan tool or hand-held tester.
   Fig 3: Connecting OBD II Scan Tool To DLC3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Connect the OBD II scan tool or hand-held tester to DLC3.
   2. Turn the ignition switch ON.
   3. Use the OBD II scan tool or hand-held tester to check the DTCs and freeze frame data and note them down (For operating instructions, see the OBD II scan tool's instruction book).
   4. See DIAGNOSTIC TROUBLE CODE CHART  to confirm the details of the DTCs.
   NOTE: When simulating symptoms with an OBD II scan tool (excluding hand-held tester) to check the DTCs, use the normal mode. For codes on the DTCs chart subject to "2 trip detection logic", turn the ignition switch OFF after the symptom is simulated once. Then repeat the simulation process again. When the problem has been simulated twice, the MIL is indicated on the instrument panel and DTCs are recorded in the ECM.
2. When using the OBD II scan tool or hand-held tester: Clearing the DTCs.
   1. Connect the OBD II scan tool or hand-held tester to DLC3.
   2. Turn the ignition switch ON.
   3. When operating an OBD II scan tool (complying with SAE J1978) or hand-held tester to erase the codes, the DTCs and freeze frame data will be erased. (See the OBD II scan tool's instruction book for operating instructions.)
3. When not using the OBD II scan tool or hand-held tester: Clearing the DTCs.
   1. Disconnecting the battery terminal or remove the EFI and ETCS fuse from engine room J/B for 60 seconds or more.

DTC CHECK 

HINT:

Hand-held tester only:

Compared to the normal mode, the check mode has more sensing ability to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.

1. Procedure for Check Mode using the hand-held tester.
   1. Check the initial conditions.
      • Battery positive voltage 11 V or more
      • Throttle valve fully closed
      • Transmission in P or N position
      • A/C switched OFF
      Fig 4: Connecting OBD II Scan Tool To DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Turn the ignition switch OFF.
   3. Connect the hand-held tester to the DLC3.
   4. Turn the ignition switch ON.
   5. Switch the hand-held tester from the normal mode to the check mode (Check that the MIL flashes).
      Fig 5: Identifying Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: If the hand-held tester switches the ECM from the normal mode to the check mode or vice-versa, or if the ignition switch is turned from ON to ACC or OFF during the check mode, the DTC and freeze frame data will be erased.
   6. Start the engine (MIL goes off after the engine starts).
   7. Simulate the conditions of the malfunction described by the customer.
      NOTE: Leave the ignition switch ON until you have checked the DTCs, etc.
   8. After simulating the malfunction conditions, use the hand-held tester diagnosis selector to check the DTCs and freeze frame data, etc.

      HINT:

      Be sure not to turn the ignition switch OFF, as turning it OFF switches the diagnosis system from the check mode to the normal mode, which erases all the DTCs, etc.

   9. After checking the DTC, inspect the applicable circuit.
2. When using the OBD II scan tool or hand-held tester: Clearing the DTCs.
   1. Connect the OBD II scan tool or hand-held tester to DLC3.
   2. Turn the ignition switch ON.
   3. When operating an OBD II scan tool (complying with SAE J1978) or hand-held tester to erase the codes, the DTCs and freeze frame data will be erased. (See the OBD II scan tool's instruction book for operating instructions.)
3. When not using the OBD II scan tool or hand-held tester: Clearing the DTCs.
   1. Disconnecting the battery terminal or remove the EFI and ETCS fuse from engine room J/B for 60 seconds or more.

HINT:

According to the DATA LIST displayed by the OBD II scan tool or Hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one method to shorten labor time.

1. Warm up the engine.
2. Turn the ignition switch OFF.
3. Connect the OBD II scan tool or Hand-held tester to the DLC3.
4. Turn the ignition switch ON.
5. Push the "ON" button of OBD II scan tool or Hand-held tester.
6. Select the item "/DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL (or ATM)".
7. According to the display on tester, read the "DATA LIST".

Fig 6: Data List Chart (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 7: Data List Chart (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Performing the ACTIVE TEST using the Hand-held tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one method to shorten labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

1. Warm up the engine.
2. Turn the ignition switch OFF.
3. Connect the Hand-held tester to the DLC3.
4. Turn the ignition switch ON.
5. Push the "ON" button of Hand-held tester.
6. Select the item "/DIAGNOSIS/ENHANCED OBD II/ACTIVE TEST".
7. According to the display on tester, perform the "ACTIVE TEST".

Fig 8: Active Test Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

This reference list indicates the part names used in this repair information along with their definitions.

HINT:

This table indicates ECM monitoring status for the items in the upper columns if the DTCs in each line on the left are being set.

As for the "X" mark, when the DTC on the left is stored, detection of the DTC in the upper column is not performed.

Fig 9: ECM Monitoring Status (1 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 10: ECM Monitoring Status (2 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 11: ECM Monitoring Status (3 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 12: ECM Monitoring Status (4 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transmission does not shift up, shift down, or the shift point is too high or too low, conduct the following road test referring to the automatic shift schedule and simulate the problem symptoms.

1. D position test (NORM and PWR pattern):

   Shift into the D position and fully depress the accelerator pedal and check the following points.

   1. Check up-shift operation.

      Check that 1 Ω 2,2 --> 3,3 --> 4 and 4 --> 5th up-shifts take place, and that the shift points conform to the automatic shift schedule (See AUTOMATIC TRANSMISSION - SERVICE SPECIFICATIONS ).

      HINT:

      • 5th Gear Up-shift Prohibition Control (1. Coolant temp, is 55°C (131°F) or less. 2. Vehicle speed is 51 km/h (32 mph) or less.)
      • 4th Gear Up-shift Prohibition Control (1. Coolant temp, is 40°C (104°F) or less. 2. Vehicle speed is 45 km/h (28 mph) or less.)
      • 5th Gear Lock-up Prohibition Control (1. Brake pedal is depressed. 2. Coolant temp, is 60°C (140°F) or less.)
      • When the 2nd start switch is on, there is no 1-2 up-shift and 2-1 down-shift.
   2. Check for shift shock and slip.

      Check for shock and slip at the 1 --> 2, 2 --> 3, 3 --> 4 and 4 --> 5th up-shifts.

   3. Check for abnormal noises and vibration.

      Drive in the D position lock-up or 5th gear and check for abnormal noises and vibration.

      HINT:

      The check for the cause of abnormal noises and vibration must be done very thoroughly as it could also be due to loss of balance in the differential, torque converter clutch, etc.

   4. Check kick-down operation.

      While running in the D position, 2nd, 3rd, 4th and 5th gears, check that the possible kick-down vehicle speed limits for 2 --> 1,3 --> 2,4 --> 3 and 5th --> 4 kick-downs conform to those indicated on the automatic shift schedule (See AUTOMATIC TRANSMISSION - SERVICE SPECIFICATIONS ).

   5. Check abnormal shock and slip at kick-down.
   6. Check the lock-up mechanism.
      • Drive in D position 5th gear, at a steady speed (lock-up ON) of about 70 km/h (43 mph).
      • Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

   If there is a big jump in engine speed, there is no lock-up.

2. 4 position test:

   Shift into the 4 position and fully depress the accelerator pedal and check the following points.

   1. Check up-shift operation.

      Check that the 1 --> 2, 2 --> 3 and 3 --> 4 up-shift takes place and that the shift point conforms to the automatic shift schedule (See AUTOMATIC TRANSMISSION - SERVICE SPECIFICATIONS ).

      HINT:

      • There is no 5th up-shift in the 4 position.
      • 4th Gear Lock-up Prohibition Control (1. Brake pedal is depressed. 2. Coolant temp, is 60°C (140°F) or less.)
   2. Check engine braking.

      While driving in the 4 position and 4th gear, release the accelerator pedal and check the engine braking effect.

   3. Check for abnormal noises during acceleration and deceleration, and for shock at up-shift and down-shift.
   4. Check the lock-up mechanism.
      • Drive in 4 position 4th gear, at a steady speed (lock-up ON) of about 64 km/h (40 mph).
      • Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

   If there is a big jump in engine speed, there is no lock-up.

3. 3 position test:

   Shift into the 3 position and fully depress the accelerator pedal and check the following points.

   1. Check up-shift operation.

      Check that the 1 --> 2 and 2 --> 3 up-shift takes place and that the shift point conforms to the automatic shift schedule (See AUTOMATIC TRANSMISSION - SERVICE SPECIFICATIONS ).

   2. Check engine braking.

      While running in the 3 position and 3rd gear, release the accelerator pedal and check the engine braking effect.

   3. Check for abnormal noises during acceleration and deceleration, and for shock at up-shift and down-shift.
4. 2 position test:

   Shift into the 2 position and fully depress the accelerator pedal and check the following points.

   1. Check up-shift operation.

      Check that the 1 --> 2 up-shift takes place and that the shift point conforms to the automatic shift schedule (See AUTOMATIC TRANSMISSION - SERVICE SPECIFICATIONS ).

      HINT:

      When the 2nd start switch is ON, there is no 1 Ω 2 up-shift and 2 --> 1 down-shift.

   2. Check engine braking.

      While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect.

   3. Check for abnormal noises during acceleration and deceleration, and for shock at up-shift and down-shift.
5. L position test:

   Shift into the L position and fully depress the accelerator pedal and check the following points.

   1. Check no up-shift.

      While running in the L position, check that there is no up-shift to 2nd gear.

   2. Check engine braking.

      While running in the L position, release the accelerator pedal and check the engine braking effect.

   3. Check for abnormal noises during acceleration and deceleration.
6. R position test:

   Shift into the R position, lightly depress the accelerator pedal, and check that the vehicle moves backward without any abnormal noise or vibration.

   CAUTION: Before conducting this test ensure that the test area is free from people and obstruction.
7. P position test:

   Stop the vehicle on a grade (more than 5°) and after shifting into the P position, release the parking brake. Then, check that the parking lock pawl holds the vehicle in place.

1. Check the fluid level.
   1. Using an SST, short-circuit between terminals TC and CG of the DLC3.

      SST 09843-18040

   2. Start the engine and run at idle.
      • A/C switch must be turned off.
      • On the model with the active height control suspension & adaptive variable suspension, turn the height control switch off.
      Fig 13: Identifying Terminals TC And CG Of DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Slowly move the shift lever through all the positions from P to L, and move it back to the P position.
   4. Move the shift lever from the N to the D position, or from D to N, within 1.5 seconds. Perform the above procedure for 6 seconds or more. This will activate the oil temperature detection mode.

      Standard: The A/T OIL TEMP warning light comes on for 2 seconds and then goes off. 

   5. Return the shift lever to the P position and disconnect terminal TC and CG.
   6. Idle the engine to raise the oil temperature.
   7. Lift up the vehicle right after the meter indicator light "ATF temperature warning light" comes on.
      • The A/T OIL TEMP warning light indicates the ATF temperature according to the following table.
      A/T OIL TEMP WARNING LIGHT CHART
      
      

      ATF Temp.	Less than optimized temperature	Optimized temperature	More than optimized temperature
      A/T OIL TEMP warning light	OFF	ON	Blinking

   8. Remove the overflow plug and check the fluid level.

      Standard: 

      FLUID LEVEL CHECK REFERENCE CHART
      
      

      When ATF overflow(1)	ATF level is higher than the specification (Go to step (11))
      When ATF does not overflow	ATF level is equal to or lower than specification (Go to step (9))
      (1) Since the overflow capacity is 3 cc, check if the drained ATF is 3 cc or more.

   9. Remove the refill plug.

      Fluid type: AUTO FLUID WS 

      Fig 14: Locating Refill & Drain Plugs

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   10. Fill ATF to the refill plug until it flows out from the overflow plug.
   11. When the draining ATF becomes a trickle, install the overflow plug through a new gasket.
   12. Install the refill plug (only if the refill plug has been removed).
   13. Lower the vehicle down.
   14. Turn the ignition switch off to stop the engine.
2. Check the fluid condition.

   If the fluid smells burnt or is black, replace it (see step  12.).

3. Inspect and adjust the shift lever position.

   When shifting the shift lever from the N position to other positions, check that the lever can be shifted smoothly and accurately to each position and that the position indicator is not aligned with the correct position.

   If the indicator is not aligned with the correct position, carry out the following adjustment procedures.

   1. Loosen the nut on the shift lever.
   2. Push the control shaft fully rearward.
      Fig 15: Locating Shift Lever Adjusting Nut

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Return the control shaft lever 2 notches to N position.
   4. Set the shift lever to N position.
   5. While holding the shift lever lightly toward the R position side, tighten the shift lever nut.

      Torque: 13 N.m (130 kgf.cm, 9 ft.lbf) 

      Fig 16: Adjusting Shift Lever

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   6. Start the engine and make sure that the vehicle moves forward when shifting the lever from the N to D position and reverses when shifting it to the R position.
4. Inspect and adjust the park/neutral position.
   • Check that the engine can be started with the shift lever only in the N or P position, but not in other positions.
   Fig 17: Adjusting Park/Neutral Position Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If it is not as stated above, carry out the following adjustment procedures.

   • Loosen the park/neutral position switch bolt and set the shift lever to the N position.
   • Align the groove with neutral basic line.
   • Hold in position and tighten the bolt.

   Torque: 13 N.m (130 kgf.cm, 9 ft.lbf) 

   • For continuity inspection of the park/neutral position switch, see DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MAL-FUNCTION (PRNDL INPUT), DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT  .
5. Check the idle speed.

   Idle speed (In N position and air conditioner OFF): 700 +/- 50 rpm 

Fig 18: Add Automatic Transmission Fluid Flow Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. When adding a maximum amount of fluid: [*1]
   1. Lift up the vehicle while keeping it level.
   2. Remove the refill plug and overflow plug.
      Fig 19: Locating Refill Plug And Overflow Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Add ATF to the refill hole until it drains out from the overflow hole.
      NOTE: Be sure to add ATF WS.
      Fig 20: Adding ATF To Refill Hole

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Temporarily install the gasket and overflow plug.

      Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) 

      Fig 21: Installing O-Ring And Refill Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   5. Add proper amount of ATF to the refill hole.
      NOTE: Refill amount is different depending on the related procedures.
      REFILL AMOUNT AND RELATED PROCEDURES
      
      

      Related procedures	Refill amount
      Removal and installation of oil pan	1.7 liters (1.8 us qts, 1.5 lmp.qts)
      Removal of transmission valve body assy	4.3 liters (4.5 us qts, 3.8 lmp.qts)
      Removal of torque converter assy	5.4 liters (5.7 us qts, 4.8 lmp.qts)

   6. Temporarily install the O-ring and refill plug.

      Torque: 39 N.m (400 kgf.cm, 29 ft.lbf) 

      Fig 22: Installing O-Ring And Refill Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   7. Lower down the vehicle.
   8. Using an SST, short-circuit between terminals TC and CG of the DLC3.

      SST 09843-18040

      Fig 23: Identifying Terminals TC And CG Of DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   9. Start the engine and run at idle.
      NOTE:

      • A/C switch must be turned off.
      • On the model with the active height control suspension & adaptive variable suspension, turn the height control switch off.
   10. Slowly move the shift lever from the P to the 2-L position.

       Return the shift lever to the P position.

   11. Switch to the fluid temperature detection mode.
       • Move the shift lever from the N to the 4D position, or from 4D to N, within 1.5 seconds.
       • Perform the above procedure for 6 seconds or more.

       Standard: Meter indicator light "ATF temperature warning light" comes on for 2 seconds and then goes off. 

       Fig 24: Identifying ATF Temperature Warning Light

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   12. Disconnect terminals TC and CG after confirming the above condition.
   13. Idle the engine to raise fluid temperature.
   14. Lift up the vehicle right after the meter indicator light "ATF temperature warning light" comes on.
       NOTE:

       • Add fluid only when the meter indicator light is on.
       • Perform the procedure while the engine is idling.
       Fig 25: Reading Indicator Light "ATF OIL TEMP"

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   15. Remove the overflow plug. If ATF overflows, proceed to [*2].

       If ATF does not overflow, proceed to [*3].

       HINT:

       "Overflow" indicates the condition that ATF drains out from the overflow tube.

       NOTE: Capacity of the overflow tube is approximately 3 cc.
   Fig 26: Removing Overflow Plug

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. When fluid overflows: [*2]
   1. Install the overflow plug through a new gasket when the draining ATF becomes a trickle.

      Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) 

   2. Install the refill plug through a new O-ring.

      Torque: 39 N.m (400 kgf.cm, 29 ft.lbf) 

   3. Lower down the vehicle.
   4. Turn the ignition switch off and remove the SST.
   5. Check the fluid leaks.

      Check for leaks in the transmission.

   If there are leaks, it is necessary to repair or replace O-rings, FIPGs, oil seals, plugs or other parts.

   Fig 27: Draining ATF From Overflow

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. When fluid does not overflow: [*3]
   1. Remove the refill plug.
      Fig 28: Removing Refill Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Add ATF to the refill hole until it drains out from the overflow hole.
      Fig 29: Adding ATF Through Refill Hole

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Install the overflow plug through a new gasket when the draining ATF becomes a trickle.

      Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) 

      Fig 30: Draining ATF From Overflow

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Install the refill plug through a new O-ring.

      Torque: 39 N.m (400 kgf.cm, 29 ft.lbf) 

   5. Lower down the vehicle.
   6. Turn the ignition switch off.
   7. Check the fluid leaks.

      Check for leaks in the transmission.

   If there are leaks, it is necessary to repair or replace O-rings, FIPGs, oil seals, plugs or other parts.

4. When adding a minimum amount of fluid: [*4]
   1. Using an SST, short-circuit between terminals TC and CG of the DLC3.

      SST 09843-18040

      Fig 31: Identifying Terminals TC And CG Of DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Start the engine and run at idle.
      NOTE: A/C switch must be turned off.
   3. Slowly move the shift lever from the P to the 2-L position. Return the shift lever to the P position.
   4. Switch to the fluid temperature detection mode.
      • Move the shift lever from the N to the 4D position, or from 4D to N, within 1.5 seconds.
      • Perform the above procedure for 6 seconds or more.

      Standard: Meter indicator light "ATF temperature warning light" comes on for 2 seconds and then goes off. 

   5. Disconnect terminals TC and CG after confirming the above condition.
   6. Idle the engine to raise fluid temperature.
      Fig 32: Identifying ATF OIL TEMP Light

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   7. Lift up the vehicle right after the meter indicator light "ATF temperature warning light" comes on.
      NOTE:

      • Add fluid only when the meter indicator light is on.
      • Perform the procedure while the engine is idling.
      Fig 33: Reading Indicator Light "ATF OIL TEMP"

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   8. Remove the overflow plug. If ATF overflows, proceed to [*5]. If ATF does not overflow, proceed to [*6].

      HINT:

      "Overflow" indicates the condition that ATF drains out from the overflow tube.

   Fig 34: Removing Overflow Plug

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. When fluid overflows: [*5]
   1. Install the overflow plug through a new gasket when the draining ATF becomes a trickle.

      Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) 

   2. Install the refill plug through a new O-ring.

      Torque: 39 N.m (400 kgf.cm, 29 ft.lbf) 

   3. Lower down the vehicle.
   4. Turn the ignition switch off.
   5. Check the fluid leaks.

      Check for leaks in the transmission.

   If there are leaks, it is necessary to repair or replace O-rings, FIPGs, oil seals, plugs or other parts.

   Fig 35: Draining ATF From Overflow

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. When fluid does not overflow: [*6]
   1. Remove the refill plug.
      Fig 36: Removing Refill Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Add ATF to the refill hole until it drains out from the overflow hole.
      Fig 37: Adding ATF To Refill Hole

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Install the overflow plug through a new gasket when the draining ATF becomes a trickle.

      Torque: 20 N.m (204 kgf.cm, 15 ft.lbf) 

   4. Install the refill plug through a new O-ring.

      Torque: 39 N.m (400 kgf.cm, 29 ft.l 

   5. Lower down the vehicle.
   6. Turn the ignition switch off.
   7. Check the fluid leaks.

      Check for leaks in the transmission.

   If there are leaks, it is necessary to repair or replace O-rings, FIPGs, oil seals, plugs or other parts.

Fig 38: Draining ATF From Overflow

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the stall speed.

   The object of this test is to check the overall performance of the transmission and engine by measuring the stall speeds in the D and R positions.

   NOTE:

   • Do the test at normal operating fluid temperature 70 to 80°C (158 to 176°F).
   • Do not continuously run this test longer than 5 seconds.
   • To ensure safety, conduct this test in a wide, clear level area which provides good traction.
   • The stall test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
   1. Chock all 4 wheels.
   2. Connect an OBD II scan tool or hand-held tester to DLC3.
   3. Fully apply the parking brake.
   4. Keep your left foot pressing firmly on the brake pedal.
   5. Start the engine.
   6. Shift into the D position. Press all the way down on the accelerator pedal with your right foot. Quickly read the stall speed at this time.

      Stall speed: 2,150 +/- 150 rpm 

   7. Do the same test in R position.

      Stall speed: 2,150 +/- 150 rpm 

   Evaluation: 

   Fig 39: Evaluation Chart

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2. Measure the time lag.

   When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the clutch and brake.

   NOTE:

   • Do the test at normal operating fluid temperature 70 to 80°C (158 to 176°F).
   • Be sure to allow 1 minute interval between tests.
   • Take 3 measurements and take the average value.
   1. Fully apply the parking brake.
   2. Start the engine and check idle speed.

      Idle speed (In N position and air conditioner OFF): 700 +/- 50 rpm. 

   3. Shift the shift lever from N to D position. Using a stop watch, measure the time from when the lever is shifted until the shock is felt.

      Time lag: 

      N --> D Less than 1.2 seconds 

   4. In the same manner, measure the time lag for N --> R.

      Time lag: 

      N --> R Less than 1.5 seconds 

   Evaluation (If N --> D time or N --> R time lag is longer than the specified): 

Fig 40: Evaluation Chart (If N --> D Time Or N --> R Time Lag Is Longer Than The Specified)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the line pressure.

1. Warm up the ATF.
2. Remove the test plug on the transmission case center right side and connect SST.

   SST 09992-00095 (09992-00231, 09992-00271)

   Fig 41: Connecting SST.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Fully apply the parking brake and chock the 4 wheels.
4. Start the engine and check idling speed
5. Keep your left foot pressing firmly on the brake pedal and shift into D position.
6. Measure the line pressure when the engine is idling.
7. Depress the accelerator pedal all the way down. Quickly read the highest line pressure when engine speed reaches stall speed.
8. In the same manner, do the test in R position.

Specified line pressure: 

Fig 42: Specified Line Pressure Chart

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HINT:

By this test, it can be determined whether the trouble is within the electrical circuit or is a mechanical problem in the transmission.

1. Disconnect the transmission wire.
2. Inspect the manual driving operation.

   Check that the shift and gear positions correspond with the table below.

   While driving, shift through the L, 2, 3, 4 and D positions. Check that the gear change corresponds to the shift position.

   GEAR POSITION CHART
   
   

   Shift Position	Gear Position
   D	4th
   4	4th
   3	3rd
   2	1st
   L	1st
   R	Reverse
   P	Pawl Lock

   HINT:

   If the gear positions of the L, 2, 3, 4 and D are difficult to distinguish, do the following road test.

   If any abnormality is found in the above test, the problem is in the transmission itself.

3. Connect the transmission wire.
4. Cancel out DTC.

HINT:

The ECM memorizes the condition that the ECT controls the automatic transmission assy and engine assy according to those characteristics. Therefore, when the automatic transmission assy, engine assy, or ECM has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.

Reset procedure is as follows.

1. Turn the ignition switch off.
2. Connect the hand-held tester to the DLC3.
3. Turn the ignition switch to the ON position and push the hand-held tester main switch on.
4. Select the item "DIAGNOSIS/ENHANCED OBD II".
5. Perform the reset memory procedure from the ENGINE menu.

Fig 43: Test Menu Flow Chart

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