Toyota CH-R Service Manual: Lost Communication With ECM/PCM "A" (U0100,U0129,U023A)

Toyota CH-R Service Manual / Power Assist Systems / Power Steering System / 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	CAN communication system 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)	CAN communication system 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	CAN communication system 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

END

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 ...

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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 ...

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