DTC C0089:64 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2906500

DTC

C0089:64

TCS OFF switch

DETECTION CONDITION

•  Continuous ON signal from the TCS OFF switch for 10 s or more is detected.

FAIL-SAFE FUNCTION

Refer to “DTC Table” and “Fail-safe Function Malfunction Contents”. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

POSSIBLE CAUSE

•  The driver pressed and held the TCS OFF switch for 10 s or more.

•  Short to ground in the wiring harness between the instrument cluster terminal V and TCS OFF switch terminal B

•  Open circuit in wiring harness between instrument cluster terminal T and TCS OFF switch terminal C

•  TCS OFF switch malfunction

•  Poor connection at connectors (female terminal)

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT FOR INSTRUMENT CLUSTER MALFUNCTION • Switch the ignition to off. • Using the M-MDS, perform the DTC inspection for the instrument cluster. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Are any DTCs detected?	Yes	Go to applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].)
1		No	Go to the next step.
2	INSPECT TCS OFF SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND • Disconnect the TCS OFF switch. • Disconnect the instrument cluster connector. • Inspect for continuity between the TCS OFF switch connector terminal B (vehicle harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the wiring harness, then go to Step 5.
2		No	Go to the next step.
3	INSPECT TCS OFF SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the TCS OFF switch connector terminal C (vehicle harness-side) and instrument cluster connector terminal T (vehicle harness-side). • Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness, then go to Step 5.
4	INSPECT TCS OFF SWITCH • Inspect the TCS OFF switch. (See TCS OFF SWITCH INSPECTION.) • Is the TCS OFF switch normal?	Yes	Go to the next step.
4		No	Replace the TCS OFF switch, then go to the next step. (See TCS OFF SWITCH REMOVAL/INSTALLATION.)
5	VERIFY THAT THE SAME DTC IS NOT PRESENT • Reconnect all disconnected connectors. • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • Are the same DTCs present?	Yes	Repeat the inspection from Step 1.
5		No	Go to the next step.
6	VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
6		No	DTC troubleshooting completed.

DTC	C0089:64		TCS OFF switch
DETECTION CONDITION		• Continuous ON signal from the TCS OFF switch for 10 s or more is detected.
FAIL-SAFE FUNCTION		Refer to “DTC Table” and “Fail-safe Function Malfunction Contents”. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
POSSIBLE CAUSE		• The driver pressed and held the TCS OFF switch for 10 s or more. • Short to ground in the wiring harness between the instrument cluster terminal V and TCS OFF switch terminal B • Open circuit in wiring harness between instrument cluster terminal T and TCS OFF switch terminal C • TCS OFF switch malfunction • Poor connection at connectors (female terminal)