Toyota 4Runner manuals

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

1.

CHECK DTC

(a) Clear the DTCs (See page ).


(b) Perform a road test.

(c) Check for DTCs (See page ).


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.


A

USE SIMULATION METHOD TO CHECK


B

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

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