NO.1 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WITH SWITCH THE IGNITION TO ON: (ABS WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND/OR DSC OFF LIGHT) [DYNAMIC STABILITY CONTROL (DSC)]

id0403b2891900

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Any of the following lights do not illuminate with switch the ignition to ON: •  ABS warning light •  Brake system warning light •  DSC indicator light •  DSC OFF light

Possible cause

•  Instrument cluster power supply malfunction ―  Short to ground in ignition power supply circuit ―  Instrument cluster power supply fuse malfunction •  Open circuit in instrument cluster power supply circuit •  Open circuit in instrument cluster ground circuit •  DSC HU/CM DTC is stored •  DSC HU/CM power supply malfunction ―  Short to ground in ignition power supply circuit ―  DSC HU/CM power supply fuse malfunction •  Open circuit in DSC HU/CM power supply circuit •  Open circuit in DSC HU/CM ground circuit •  DSC HU/CM malfunction •  Instrument cluster DTC is stored •  Instrument cluster malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY WHETHER MALFUNCTION IS IN WARNING LIGHT AND INDICATOR LIGHT’S COMMON POWER SUPPLY OR IN OTHER WARNING LIGHTS AND INDICATOR LIGHT •  Connect the M-MDS to the DLC-2. •  Turn on all warning lights and indicator lights using the instrument cluster PID WL+IL of active command modes. (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].) •  Do the other warning and indicator lights illuminate?	Yes	Go to Step 5.
		No	If the communication error message is displayed on M-MDS screen: •  Go to the next step. If the communication error message is not displayed: •  Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
2	INSPECT INSTRUMENT CLUSTER POWER SUPPLY FUSE •  Switch the ignition to off. •  Disconnect the negative battery cable. •  Inspect the instrument cluster ignition power supply fuse. •  Is the fuse normal?	Yes	Go to the next step.
		No	Inspect for short to ground in ignition power supply circuit. Repair or replace if necessary. Install the appropriate amperage fuse.
*3	INSPECT INSTRUMENT CLUSTER POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Reconnect the negative battery cable. •  Switch the ignition to ON. •  Measure the voltage between instrument cluster terminal 2S (wiring harness-side) and body ground. •  Is the voltage approx. 12 V?	Yes	Go to the next step.
		No	Repair or replace the wiring harness for a possible open circuit.
*4	INSPECT INSTRUMENT CLUSTER GROUND CIRCUIT FOR OPEN CIRCUIT •  Switch the ignition to off. •  Disconnect the negative battery cable. •  Disconnect the instrument cluster connector. •  Inspect for continuity between instrument cluster terminal 2K (wiring harness-side) and body ground. •  Is there continuity?	Yes	Replace the instrument cluster (open circuit in instrument cluster). (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness for a possible open circuit.
5	CONFIRM DSC HU/CM DTC •  Retrieve the DSC HU/CM DTC using the M-MDS. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) •  Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
		No	If the communication error message is displayed in M-MDS screen: •  Go to the next step. If the communication error message is not displayed: •  Go to Step 9.
6	INSPECT DSC HU/CM POWER SUPPLY FUSE •  Switch the ignition to off. •  Disconnect the negative battery cable. •  Inspect the DSC HU/CM ignition power supply fuse. •  Is the fuse normal?	Yes	Go to the next step.
		No	Inspect for short to ground in ignition power supply circuit. Repair or replace if necessary. Install the appropriate amperage fuse.
*7	INSPECT DSC HU/CM POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Reconnect the negative battery cable. •  Switch the ignition to ON. •  Measure the voltage between DSC HU/CM terminal Y (wiring harness-side) and body ground. •  Is the voltage approx. 12 V?	Yes	Go to the next step.
		No	Repair or replace the wiring harness for a possible open circuit.
*8	INSPECT DSC HU/CM GROUND CIRCUIT FOR OPEN CIRCUIT •  Switch the ignition to off. •  Disconnect the negative battery cable. •  Disconnect the DSC HU/CM connector. •  Inspect for continuity between DSC HU/CM terminal B (wiring harness-side) and body ground. •  Is there continuity?	Yes	Replace the DSC HU/CM (open circuit in DSC HU/CM). (See DSC HU/CM REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness for a possible open circuit.
9	CONFIRM INSTRUMENT CLUSTER DTC •  Retrieve the instrument cluster DTC using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) •  Are any DTCs present?	Yes	Go to the applicable DTC troubleshooting. (See DTC TABLE [INSTRUMENT CLUSTER].)
		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)