Toyota CH-R Service Manual: Lost Communication With ECM/PCM "A" (U0100,U0129,U023A)
DESCRIPTION
The power steering ECU assembly receives signals from the ECM and skid control ECU (brake actuator assembly) 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: Does not come on |
The ECU judges the system has returned to normal or the ignition switch is turned ON again |
- |
|
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 or the ignition switch is turned ON again |
- |
|
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 or the ignition switch is turned ON again |
w/ Toyota Safety Sense P |
PROCEDURE
|
1. |
GO TO CAN COMMUNICATION SYSTEM |
(a) Go to CAN communication system.
Click here
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EPS Warning Light Circuit
DESCRIPTION
If the power steering ECU assembly detects a malfunction, the power steering
ECU assembly stores a DTC and illuminates the EPS warning light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
...
TC and CG Terminal Circuit
DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by
blinking the EPS warning light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the power steering E ...
Other materials:
Toyota CH-R Service Manual > Can Communication System: Check Bus 4 Lines for Short Circuit
DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch
lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central
gateway ECU (network gateway ECU) is below 54 Ω.
Symptom
Trouble Area
Resistance b ...
Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): No Sound can be Heard from Speakers
PROCEDURE
1.
CHECK SETTINGS
(a) Check radio receiver assembly setting.
(1) Check that the volume is not set to "0".
OK:
The volume is not set to "0".
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
...
Toyota C-HR (AX20) 2023-2025 Owner's Manual
Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
- Introduction
- Maintenance
- Audio / Video
- Cellular Communication
- Navigation / Multi Info Display
- Park Assist / Monitoring
- Brake (front)
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- Brake Control / Dynamic Control Systems
- Brake System (other)
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- Theft Deterrent / Keyless Entry
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