ACC Symptom Troubleshooting - Adaptive cruise control (ACC) activation indicator (green) does not come on
Adaptive Cruise Control (ACC) Activation Indicator (green) Does Not Come On
Is the gauge control module OK?
YES -
Go to Step 2 .
NO -
Substitute a known-good gauge control module and recheck. If the problem goes away, replace the original gauge control module. ■
Is the switch OK?
YES -
Go to Step 3 .
NO -
  1. Turn the ignition switch to ON (II).
  1. Check for voltage between the ACC combination switch 12P connector No. 5 terminal and body ground.
Is there about 12 V?
YES -
Repair an open in the wire between the ACC combination switch and body ground.■
NO -
Repair an open in the wire between the ACC combination switch and the gauge control module.■