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NO.9 TCS OFF LIGHT STAYS ON MORE THAN 4 s WITH IGNITION SWITCH ON

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9 | TCS OFF light stays on more than 4 seconds with ignition switch on. (Parking brake is released.)
[TROUBLESHOOTING HINTS] • Warning light circuit open or shorted to ground in ABS/TCS HU/CM • Warning light circuit open or shorted to ground in ABS/TCS HU/CM

1 | INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY AND SHORTS Perform DTC inspection. 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 WDS or equivalent, go to Step 8.
No | Go to next step.
2 | INSPECT FOR DTCS IN ABS/TCS HU/CM Have DTCs been recorded in memory? | Yes | Perform inspection using appropriate DTC.
No | Go to next step.
3 | INSPECT PID/DATA IN ABS/TCS HU/CM Inspect the following items using WDS or equivalent PID/DATA monitor function. • TRAC_SW (TCS OFF switch) Is TRAC_SW ON displayed on WDS or equivalent? | Yes | Go to Step 6 (TCS OFF switch system malfunction).
No | Go to next step.
*4 | INSPECT FOR SHORT TO GROUND IN ABS/TCS HU/CM Disconnect ABS/TCS HU/CM connector. Does TCS OFF light go out with ignition switch on? | Yes | Replace ABS/TCS HU/CM (short to ground in ABS/TCS HU/CM).
No | Go to next step.
*5 | INSPECT TCS OFF SWITCH Disconnect TCS OFF switch connector. Is TRAC_SW ON displayed on WDS or equivalent? | Yes | Go to next step.
No | Replace TCS OFF switch (TCS will not turn off, even though switch is OFF).
*6 | VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN ABS/TCS HU/CM AND TCS OFF SWITCH FOR SHORT TO GROUND) OR ABS/TCS HU/CM Is there continuity between connector terminal P and ground? | Yes | Repair wiring harness between ABS/TCS HU/CM (terminal P) and TCS OFF switch.
No | Go to next step.
*7 | 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.
*8 | 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.
*9 | 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