DESCRIPTION
The power steering ECU assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The ECU provides appropriate assist force in accordance with the vehicle speed based on the signals.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1541 |
Vehicle Speed Signal |
Vehicle speed signals via CAN communication are cut off for 3 seconds or more. |
|
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch is turned ON again |
- |
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if DTC U0129 is output.
Click here
Result |
Proceed to |
---|---|
DTC U0129 is not output. |
A |
DTC U0129 is output. |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)
|
|
2. |
CHECK BRAKE CONTROL SYSTEM |
(a) Using the Techstream, check for DTCs and confirm that there are no malfunctions in the brake control system.
Click here
Result |
Proceed to |
---|---|
DTCs are not output. |
A |
DTCs are output. |
B |
A | ![]() |
REPLACE POWER STEERING ECU ASSEMBLY |
B | ![]() |
GO TO BRAKE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)
|
Toyota CH-R Service Manual > Smart Key System(for Entry Function): Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Smart Key System (for Entry Function)
DTC No.
Detection Item
Link
B27A1
Open in Driver Side Electrical Antenna Circuit
B27A2
Open in Front Passenger Side Electrical A ...
Toyota CH-R Service Manual > Power Window Control System: Remote Up / Down Function does not Operate
DESCRIPTION
When the ignition switch is ON, the multiplex network master switch assembly
sends remote up and down signals to each power window regulator motor assembly via
LIN communication.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The power window control system uses the LI ...