Lexus ES: Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE CHART
Dynamic Torque Control AWD System| DTC No. | Trouble Area | AWD Warning Message | Fail-safe Operation | Memory | Fail-safe Deactivation Condition |
|---|---|---|---|---|---|
| C120C | Linear Solenoid Power Supply System Malfunction | Displayed | Prohibited | Yes | Engine switch off |
| C1241 | Low or High Power Supply Voltage | Displayed | Prohibited | Yes | Engine switch off |
| C1280 | Engine Circuit Malfunction | Displayed | Partially permitted | Yes | Engine switch off |
| C1296 | ABS Malfunction | Displayed | Prohibited | Yes | Engine switch off |
| C1297 | Steering Angle Sensor | Displayed | Partially permitted | Yes | Engine switch off |
| C1298 | Linear Solenoid Circuit | Displayed | Prohibited | Yes | Engine switch off |
| C1299 | Cancellation of 4WD Control | Displayed | Prohibited | Yes | Engine switch off |
| C1337 | Diameter of the Tire is not Uniform | Displayed | Prohibited | Yes | Engine switch off |
| U0073 | Control Module Communication Bus Off | Displayed | Prohibited | Yes | Communication returned to normal |
| U0100 | Lost Communication with ECM / PCM "A" | Displayed | Partially permitted | Yes | Communication returned to normal |
| U0126 | Lost Communication with Steering Angle Sensor Module | Displayed | Partially permitted | Yes | Communication returned to normal |
| U0129 | Lost Communication with Brake System Control Module | Displayed | Prohibited | Yes | Communication returned to normal |
READ NEXT:
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) When a DTC is stored, the 4WD ECU assembly stores the current vehicle state as Freeze Frame Data. HINT: Freeze Frame Data at the time a DTC is stored:
When t
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
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
SEE MORE:
Installation
INSTALLATION PROCEDURE 1. INSTALL AIR FUEL RATIO SENSOR HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Click here (a) Using SST, install the air fuel ratio sensor to the exhaust manifold (TWC: Front Catalyst). SST: 09224-00012 Torque: Specified tightening
Software Incompatibility with Brake System Control Module Not Programmed (U031851)
DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake actuator assembly), the forward recognition camera stores DTC U031851. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from U031851
