C1954

SUSPENSION CONTROL: ACTIVE STABILIZER SUSPENSION SYSTEM: C1954: Malfunction in Signal from Yaw Rate Sensor to Rear Active Stabilizer Control ECU
C1954 - Malfunction in Signal from Yaw Rate Sensor to Rear Active Stabilizer Control ECU

DESCRIPTION

If the rear active stabilizer control ECU receives a yaw rate sensor malfunction signal, DTC C1954 is output. The yaw rate sensor is diagnosed by the skid control ECU. If yaw rate sensor related electronically controlled brake system DTCs are output, perform a diagnosis for those DTCs. If no yaw rate sensor related electronically controlled brake system DTCs are output, there may be a malfunction in the rear active stabilizer control ECU.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Turn the power switch OFF.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch ON (READY) and the Techstream on.

(d) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Electronically Controlled Brake System

A -- REPLACE REAR ACTIVE STABILIZER CONTROL ECU Removal