TCS Warning Light Inoperative

Disconnect ABS ECM connector. Turn ignition on. Connect jumper wire between ECM connector terminals No. 19 and 28. See Fig 1 . If TCS light does not come on, go to next step. If TCS light comes on, check ABS ECM connector for poor terminal contact. Repair as necessary.
Check for open circuit in wire between ABS ECM terminal No. 28 and instrument cluster connector terminal No. 13. Repair as necessary. If wire is okay, replace ECM.

Fig 1: Identifying ABS ECM Connector Terminals (With Traction Control)
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