DTC C1109:64 [DSC HU/CM]

id040262878700

DTC	C1109:64	DSC OFF switch
DETECTION CONDITION		•  Continuous ON signal from the DSC OFF switch for 10 s or more is detected
FAIL-SAFE FUNCTION		Refer to DTC TABLE. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		•  The DSC OFF switch is pressed and held for 10 s or more •  Open or short to GND circuit in wiring harness between instrument cluster terminal 1V and DSC OFF switch terminal B •  Open or short to GND circuit in wiring harness between instrument cluster terminal 1A and DSC OFF switch terminal C •  DSC OFF switch malfunction •  Poor connection at each connector

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 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 SIGNAL CIRCUIT FOR SHORT TO GROUND •  Switch the ignition OFF. •  Disconnect the instrument cluster connector. •  Inspect for continuity as followings: ―  Instrument cluster terminal 1V (wiring harness-side)—body ground ―  Instrument cluster terminal 1A (wiring harness-side)—body ground •  Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector in the followings: •  Instrument cluster terminal 1V—DSC OFF switch terminal B •  Instrument cluster terminal 1A—DSC OFF switch terminal C 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. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has a short to ground. Go to Step5.
		No	Go to the next step.
3	INSPECT DSC OFF SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Switch the ignition OFF. •  Disconnect the instrument cluster connector. •  Disconnect the DSC OFF switch connector. •  Inspect for continuity as followings: ―  Instrument cluster terminal 1V (wiring harness-side)—DSC OFF switch terminal B (wiring harness-side) ―  Instrument cluster terminal 1A (wiring harness-side)—DSC OFF switch terminal C (wiring harness-side) •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector in the followings: •  Instrument cluster terminal 1V—DSC OFF switch terminal B •  Instrument cluster terminal 1A—DSC OFF switch terminal C 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 an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step5.
4	INSPECT DSC OFF SWITCH •  Inspect 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.)
5	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 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.
6	VERIFY NO DTC IS PRESENT •  Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
		No	DTC troubleshooting completed.