TCS Activation Indicator Does Not Come on

TCS Activation indicator does not come on
1. Turn the ignition switch ON (II), and watch the TCS activation indicator.
Does the TCS activation indicator come on for several seconds?
YES - The system is OK at this time.
NO - Go to step 2.
2. Do the gauge control module self-diagnostic function procedure.
Is the gauge control module OK?
YES - Go to step 3.
NO - Replace the gauge control module.
3. Turn the ignition switch OFF.
4. Substitute a known-good ABS/TCS modulator control unit.
5. Turn the ignition switch ON (II).
Does the TCS activation indicator come on?
YES - Replace the ABS/TCS modulator-control unit
NO - Check for loose terminals in the gauge control module connectors. If connections are good, replace the gauge control module.