C1946

SUSPENSION CONTROL: ACTIVE STABILIZER SUSPENSION SYSTEM: C1946: Malfunction in Signal from Steering Control ECU to Front Active Stabilizer Control ECU
C1946 - Malfunction in Signal from Steering Control ECU to Front Active Stabilizer Control ECU

DESCRIPTION

If the front active stabilizer control ECU receives a Variable Gear Ratio Steering (VGRS) system malfunction signal, DTC C1946 is output. If VGRS system related DTCs are output, perform a diagnosis for those DTCs. If no VGRS system DTCs are output, there may be a malfunction in the front active stabilizer control ECU.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (VGRS 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 that VGRS system DTCs are not output Variable Gear Ratio Steering System.

OK:

DTC is not output.

NG -- GO TO VGRS SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Variable Gear Ratio Steering System

OK -- REPLACE FRONT ACTIVE STABILIZER CONTROL ECU Removal