Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure listed to troubleshoot the Dynamic Torque Control AWD System.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | INSPECT BATTERY VOLTAGE |
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
| 3. | CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
| Result | Proceed to |
|---|---|
| CAN DTC is not output | A |
| CAN DTC is output | B |
| B | .gif) | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Chassis > Four Wheel Drive > Trouble Codes(b) Check for freeze frame data.
HINT:
Record or print DTCs and freeze frame data if necessary.
(c) Clear the DTCs and freeze frame data.
Chassis > Four Wheel Drive > Clear DTCs(d) Recheck for DTCs.
Chassis > Four Wheel Drive > Trouble Codes| Result | Proceed to |
|---|---|
| DTC does not reoccur | A |
| DTC reoccurs | B |
| B | | GO TO STEP 7 |
|
| 5. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault not listed in problem symptoms table | A |
| Fault listed in problem symptoms table | B |
| B | | GO TO STEP 7 |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU.
Click here
(b) Data List / Active Test.
Click here
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| 7. | REPAIR OR REPLACE |
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| 8. | CONFIRMATION TEST |
| NEXT | | END |
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Parts Location
PARTS LOCATION ILLUSTRATION *1 BRAKE ACTUATOR ASSEMBLY - SKID CONTROL ECU *2 ECM *3 FRONT SPEED SENSOR LH *4 FRONT SPEED SENSOR RH *5 REAR SKID CONTROL SENSOR LH *6 REAR
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
System Diagram
SYSTEM DIAGRAM
SEE MORE:
High Voltage System Interlock Circuit Open (P0A0A13,P0A0A92)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects that a safety device (interlock) is operated or that there is an open circuit in the detection circuit. (Even if an open circuit occurs while the vehicle is stopped, the system determines that the safety device was operated.)
Right Rear Wheel Speed Sensor Circuit Short to Battery (C051212)
DESCRIPTION Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control. The speed sensor detects the magnetic fields of the speed sensor rotor as it rotates and outputs a pulse signal. The frequency of the puls
