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.
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PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if DTC U0129 is output.
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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.
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Chassis > ABS/VSC/TRAC > Trouble Codes
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 > Roof Headlining: Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL HEADLINING LIGHT CASE
(a) Align the markings on the roof headlining with the headlining light case
and install it using hot melt glue.
*a
Marking
-
-
2. INSTALL NO. 2 ANTENNA CORD SUB-ASSEMBLY
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Toyota CH-R Service Manual > Pre-collision System: Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U023A)
DESCRIPTION
These DTCs are stored when a communication malfunction occurs between ECUs that
perform pre-collision control.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0100
Lost Communication with ECM / PCM & ...