Toyota 4Runner: Lost Communication with ECM/PCM "A" (U0100/71,U0122/71,U0124/71,U0126/71)

Toyota 4Runner Service Manual / Suspension / Suspension Control / Kinetic Dynamic Suspension System / Lost Communication with ECM/PCM "A" (U0100/71,U0122/71,U0124/71,U0126/71)

DESCRIPTION

DTC Code	DTC Detection Condition	Trouble Area
U0100/71	While driving at 30 km/h (19 mph), the ECM indicates a CAN communication stop for 3 seconds or more.	CAN communication system
U0122/71	The skid control ECU indicates a CAN communication stop for 3 seconds or more.	CAN communication system
U0124/71	The yaw rate sensor indicates a CAN communication stop for 3 seconds or more.	CAN communication system
U0126/71	The steering angle sensor indicates a CAN communication stop for 3 seconds or more.	CAN communication system

PROCEDURE

CHECK DTC

(a) Clear the DTCs (See page ).

(b) Perform a road test.

Result

Condition	Proceed to
DTC is not output	A
DTC is output	B

HINT:

If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.

USE SIMULATION METHOD TO CHECK

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

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