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STEP
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INSPECTION
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ACTION
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1
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC (DATA LINK CONNECTOR) FOR CONTINUITY AND SHORTS
Activate TRAC_OFF (TCS OFF light) using WDS or equivalent.
Is error message displayed regarding communication between ABS/TCS CM and WDS or equivalent?
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Yes
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If a communication error message is displayed even after inspecting according to procedures displayed on the WDS or equivalent, go to Step 6.
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No
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Go to next step.
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2
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CHECK TCS OFF LIGHT BULB FOR MALFUNCTIONS BY USING INSPECTION FUNCTION IN ABS/TCS HU/CM
Activate TRAC_OFF (TCS OFF light) using WDS or equivalent
Does TCS OFF light illuminate?
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Yes
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Replace ABS/TCS HU/CM (OFF light bulb malfunction inspection control incorrect in ABS/TCS HU/CM).
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No
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Go to next step.
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*3
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INSPECT TCS OFF LIGHT CIRCUIT IN INSTRUMENT CLUSTER
Remove instrument cluster.
Connect instrument cluster (24-pin) terminal 2F to ground and connect all instrument cluster connectors.
Does TCS OFF light illuminate with ignition switch on?
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Yes
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Undo short and connect all instrument cluster connectors, then go to next step.
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No
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Replace instrument cluster (open circuit in instrument cluster).
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*4
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN ABS/TCS CM AND INSTRUMENT CLUSTER FOR CONTINUITY) OR ABS/TCS HU/CM
Disconnect ABS/TCS HU/CM connector.
Connect the SST (49 G066 001) (vehicle harness side only).
Use the SST connector to ground TCS OFF light terminal O to body ground.
Does TCS OFF light illuminate with ignition switch on?
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Yes
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Replace ABS/TCS HU/CM (open circuit in ABS/TCS HU/CM).
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No
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Repair wiring harness between ABS/TCS HU/CM and instrument cluster.
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*5
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INSPECT WIRING HARNESS BETWEEN ABS/TCS CM AND DLC (DATA LINK CONNECTOR) FOR CONTINUITY
Is there continuity between SST connector terminal T and data link connector?
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Yes
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Go to next step.
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No
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Repair wiring harness between ABS/TCS HU/CM and data link connector.
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*6
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC (DATA LINK CONNECTOR) FOR SHORT TO B+
Is voltage approximately 12 V at SST connector terminal T?
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Yes
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Repair wiring harness between ABS/TCS HU/CM and data link connector.
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No
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Go to next step.
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*7
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC (DATA LINK CONNECTOR) FOR SHORT TO GROUND
If there continuity between SST connector terminal T and ground?
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Yes
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Repair wiring harness between ABS/TCS HU/CM and data link connector.
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No
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Replace ABS/TCS HU/CM (communication circuit malfunction in ABS/TCS HU/CM).
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