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NO.7 TCS OFF LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCH ON.

BME040343000222

7 | TCS OFF light does not illuminate with ignition switch ON.
[TROUBLESHOOTING HINTS] • TCS OFF light circuit open.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY AND SHORTS • Activate TRAC_OFF (TCS OFF light) using WDS or equivalent. • Is error message displayed regarding communication between ABS/TCS HU/CM and WDS or equivalent? | Yes | If a communication error message is displayed even after inspecting according to procedures displayed on the WDS or equivalent, go to Step 6.
No | Go to next step.
2 | INSPECT 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? | Yes | Replace ABS/TCS HU/CM (OFF light bulb malfunction inspection control incorrect in ABS/TCS HU/CM).
No | Go to next step.
3 | INSPECT TCS INDICATOR LIGHT BULB • Remove instrument cluster. • Inspect TCS OFF light bulb. • Is it okay? | Yes | Go to next step.
No | Replace TCS OFF light bulb.
*4 | INSPECT TCS OFF LIGHT CIRCUIT IN INSTRUMENT CLUSTER • Connect instrument cluster (16-pin) Terminal 1C to ground and correct all instrument cluster connections. • Does TCS OFF light illuminate with ignition switch ON? | Yes | Undo short and connect all instrument cluster connectors, go to next step.
No | Replace instrument cluster (open circuit in instrument cluster).
*5 | VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN ABS/TCS HU/CM AND INSTRUMENT CLUSTER FOR CONTINUITY) OR ABS/TCS HU/CM • Disconnect ABS/TCS HU/CM. Connect SST (adapter harness) (vehicle harness side only). • Use the SST (adapter harness) connector to ground TCS indicator light Terminal O (L3, AJ) or Terminal J (MZR-CD (RF-Turbo)) to body ground.
• Does TCS OFF light illuminate with ignition switch ON?
Yes
Replace ABS/TCS HU/CM (open circuit in ABS/TCS HU/CM).
No | Repair wiring harness between ABS/TCS HU/CM (Terminal O (L3, AJ) or Terminal J (MZR-CD (RF-Turbo))) and instrument cluster.
*6 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC (DATA LINK CONNECTION) FOR CONTINUITY • Is there continuity between SST (adapter harness) connector Terminal T and DLC-2. | Yes | Go to next step.
No | Repair wiring harness between ABS/TCS HU/CM (Terminal T) and DLC-2.
*7 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR SHORT TO B+ • Is voltage approximately 12 V at SST (adapter harness) connect Terminal T? | Yes | Repair wiring harness between ABS/TCS HU/CM (Terminal T) and DLC-2.
No | Go to next step.
*8 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR SHORT TO GROUND • Is there continuity between SST (adapter harness) connector Terminal T and ground? | Yes | Repair wiring harness between ABS/TCS HU/CM (Terminal T) and DLC-2.
No | Replace ABS/TCS HU/CM (communication circuit malfunction in ABS/TCS HU/CM).