TCS Activation Indicator Does Not GO OFF
TCS activation indicator does not go off, and no DTCs are stored1. Turn the ignition switch ON (II), and watch the TCS indicator.
Does the TCS indicator go off
YES - Go to step 2.
NO - Do the appropriate troubleshooting for the TCS indicator.
2. Clear the DTC.
3. Turn the ignition switch OFF then back ON (II), and watch the TCS activation indicator.
Does the TCS activation indicator go off after several seconds?
YES - The system is OK at this time.
NO - Go to step 4.
4. Turn the ignition switch off.
5. Check the TCS OFF switch.
Is the switch OK?
YES - Go to step 4.
NO - Replace the TCS OFF switch.
6. Check for continuity between the TCS OFF switch 5P connector terminal No. 2 and the gauge assembly connector B (30P) terminal No. 7.
Is there continuity?
YES - Go to step 7.
NO - Repair a open in the wire between the TCS OFF switch and the gauge assembly connector B (30P).
7. Check for continuity between the TCS OFF switch 5P connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short in the wire between the TCS OFF switch 5P connector terminal No. 2 and the gauge control module.
NO - Go to step 8.
8. Check for continuity between the TCS OFF switch connector terminal No. 1 and ground.
Is there continuity?
YES - Go to step 9.
NO - Repair open in the wire between the TCS OFF switch and body ground (G202).
9. Substitute a known-good ABS/TCS modulator control unit.
10. Reconnect all of the disconnected connectors.
11. Clear the DTC.
12. Test-drive the vehicle.
Does the TCS activation indicator go off?
YES - Replace the ABS/TCS modulator-control unit.
NO - Check for loose terminals in the gauge assembly connectors. If necessary, substitute a known-good gauge assembly, and recheck.