DTC C1109:64 [DSC HU/CM]

id040262878700

DTC

C1109:64

DSC OFF switch

DETECTION CONDITION

•  DSC OFF is switched ON continuously for 10 s or more is detected.

FAIL-SAFE FUNCTION

•  Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)

POSSIBLE CAUSE

•  The DSC OFF switch is pressed and held for 10 s or more

•  Short to ground circuit in wiring harness between instrument cluster terminal V and cluster switch terminal B

•  DSC OFF switch malfunction

•  Poor connection at each connector

•  DSC HU/CM malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY INSTRUMENT CLUSTER DTC

•  Using the M-MDS, perform the instrument cluster DTC inspection.
(See DTC INSPECTION [INSTRUMENT CLUSTER].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [INSTRUMENT CLUSTER].)

DTC troubleshooting completed, then go to the next step.

No

Go to the next step.

2

INSPECT DSC OFF SWITCH CIRCUIT FOR SHORT TO GROUND CIRCUIT

•  Switch the ignition OFF.

•  Disconnect the cluster switch connector.

•  Inspect for continuity between cluster terminal B (wiring harness-side)—body ground

•  Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between instrument cluster terminal V—cluster switch terminal B.

If there is a common connector:

•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground circuit.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has a short to ground circuit.

Go to Step4.

No

Go to the next step.

3

INSPECT DSC OFF SWITCH

•  Inspect the DSC OFF switch.
(See DSC OFF SWITCH INSPECTION.)

•  Is the DSC OFF switch normal?

Yes

Go to the next step.

No

Replace the DSC OFF switch, then go to the next step.

(See DSC OFF SWITCH REMOVAL/INSTALLATION.)

4

VERIFY DTC TROUBLESHOOTING COMPLETED

•  Reconnect all disconnected connectors.

•  Using the M-MDS, clear the DTC from the DSC HU/CM.
(See CLEARING DTC [DSC HU/CM].)

•  Using the M-MDS, perform the DSC HU/CM DTC inspection.
(See DTC INSPECTION [DSC HU/CM].)

•  Is the same Pending DTC present?

Yes

Repeat the inspection from Step1.

If the malfunction recurs, replace the DSC HU/CM, then go to the next step.

(See DSC HU/CM REMOVAL/INSTALLATION [L.H.D.].)

(See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)

No

Go to the next step.

5

VERIFY NO DTC IS PRESENT

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [DSC HU/CM].)

No

DTC troubleshooting completed.

DTC	C1109:64	DSC OFF switch
DETECTION CONDITION		• DSC OFF is switched ON continuously for 10 s or more is detected.
FAIL-SAFE FUNCTION		• Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		• The DSC OFF switch is pressed and held for 10 s or more • Short to ground circuit in wiring harness between instrument cluster terminal V and cluster switch terminal B • DSC OFF switch malfunction • Poor connection at each connector • DSC HU/CM malfunction

Step	Inspection		Action
1	VERIFY INSTRUMENT CLUSTER DTC • Using the M-MDS, perform the instrument cluster DTC inspection. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	INSPECT DSC OFF SWITCH CIRCUIT FOR SHORT TO GROUND CIRCUIT • Switch the ignition OFF. • Disconnect the cluster switch connector. • Inspect for continuity between cluster terminal B (wiring harness-side)—body ground • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between instrument cluster terminal V—cluster switch terminal B. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground circuit. Go to Step4.
2		No	Go to the next step.
3	INSPECT DSC OFF SWITCH • Inspect the DSC OFF switch. (See DSC OFF SWITCH INSPECTION.) • Is the DSC OFF switch normal?	Yes	Go to the next step.
3		No	Replace the DSC OFF switch, then go to the next step. (See DSC OFF SWITCH REMOVAL/INSTALLATION.)
4	VERIFY DTC TROUBLESHOOTING COMPLETED • Reconnect all disconnected connectors. • Using the M-MDS, clear the DTC from the DSC HU/CM. (See CLEARING DTC [DSC HU/CM].) • Using the M-MDS, perform the DSC HU/CM DTC inspection. (See DTC INSPECTION [DSC HU/CM].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
4		No	Go to the next step.
5	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
5	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.