Toyota Camry (XV70): Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U023A)
DESCRIPTION
The power steering ECU (rack and pinion power steering gear assembly) receives signals from the ECM, steering sensor, skid control ECU (brake actuator assembly) and forward recognition camera via CAN communication.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | Warning Indicate |
Return-to-normal Condition |
Note |
|---|---|---|---|---|---|---|
| U0100 |
Lost Communication with ECM / PCM "A" |
Lost communication with ECM |
| EPS warning light: When an error occurs during steering assist, the warning light does not illuminate. For errors that occur before assist (at the time of the decision to start assist), the warning light illuminates. |
The ECU judges the system has returned to normal |
- |
| U0126 |
Lost Communication With Steering Angle Sensor Module |
Lost communication with steering angle sensor |
| EPS warning light: Comes on |
The ECU judges the system has returned to normal |
- |
| U0129 |
Lost Communication with Brake System Control Module |
Lost communication with skid control ECU (Brake actuator assembly) |
| EPS warning light: Comes on |
The ECU judges the system has returned to normal |
- |
| U023A |
Lost Communication with Front Camera Module |
Lost communication with forward recognition camera |
| EPS warning light: Does not come on |
The ECU judges the system has returned to normal |
w/ Forward Recognition Camera |
PROCEDURE
|
1. | GO TO CAN COMMUNICATION SYSTEM |
(a) Go to CAN communication system.
Click here
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EPS Warning Light Circuit
DESCRIPTION Perform the following troubleshooting procedure when the EPS warning light remains on after the engine is started, but no DTCs are stored.
HINT:
If the power steering ECU (rack an
Drive Mode Select Switch Circuit
DESCRIPTION The electronic throttle and the EPS character change by the operation of the drive mode switch (electric parking brake switch assembly). WIRING DIAGRAM
PROCEDURE
1. CHECK
SEE MORE:
Parking Support Brake function - PKSB (Parking Support
Brake)
If the Parking Support Brake detects that a collision with an object is
possible, the engine output will be restricted to restrain any increase
in the vehicle speed. (Engine output restriction control: See A below.)
Additionally, if the accelerator pedal continues to be depressed, the
brakes wil
Removal
REMOVAL CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during oil pump removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/Repl
