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NO.5 TCS OFF LIGHT AND TCS INDICATOR LIGHT DO NOT ILLUMINATE WITH IGNITION SWITCH ON

id040300879400

5 | TCS OFF light does not illuminate with ignition switch on.
[TROUBLESHOOTING HINTS] • Malfunction of instrument cluster or ABS/TCS HU/CM • Improper configuration (ABS/TCS HU/CM)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY AND SHORTS Activate TRAC_SW (TCS OFF light) using WDS or equivalent. Is error message displayed regarding communication between ABS/TCS 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 TCS OFF LIGHT BULB FOR MALFUNCTIONS BY USING INSPECTION FUNCTION IN ABS/TCS HU/CM Activate TRAC_SW (TCS OFF light) using WDS or equivalent Does TCS OFF light illuminate? | Yes | Go to next step.
No | Go to step3.
3 | CONFIRM DTC U1900 USING WDS OR EQUIVALENT Retrieve DTC from PCM, ABS/TCS and instrument cluster. Is DTC U1900 retrieved? | Yes | Go to next step.
No | Inspect instrument cluster. If OK, then go to step6.
4 | CONFIRM THE FOLLOWING PIDS USING WDS OR EQUIVALENT ABS_MSG PCM_MSG Is "not present" massage displayed on WDS or equivalent? | Yes | Replace the instrument cluster (open circuit in instrument cluster).
No | Network communication, for related system is malfunction. Repair or replace as necessary.
5 | CONFIRM DTC B2477 FOR INSTRUMENT CLUSTER USING WDS OR EQUIVALENT Is DTC B2477 retrieved? | Yes | Re-configure the instrument cluster.
No | Replace ABS/TCS HU/CM.
*6 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY Is there continuity between connector terminal O, R and DLC-2? | Yes | Go to next step.
No | Repair wiring harness between ABS/TCS HU/CM and DLC-2.
*7 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR SHORT TO B+ Is voltage approx. 12 V at connector terminal O, R? | Yes | Repair wiring harness between ABS/TCS HU/CM (terminal P) 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 connector terminal O, R and ground? | Yes | Repair wiring harness between ABS/TCS HU/CM and DLC-2.
No | Replace ABS/TCS HU/CM (communication circuit malfunction in ABS/TCS HU/CM).

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors
while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged.