Control Switches

1. Check cruise control circuit fuse and stoplight fuse. If fuses are okay, unplug 6-pin amplifier connector. Connect voltmeter between Pin No. 5 at 6-pin amplifier connector and ground.
2. Turn ignition on. Press cruise control ON button. Check for battery voltage. If battery voltage does not exist, check circuit between control switch and amplifier connector. Repair circuit as necessary.
3. Turn ignition off. Disconnect negative battery cable. Connect ohmmeter in place of voltmeter. Rotate steering wheel through its full range while performing following checks:
   • Press OFF button. Resistance should be 0-1 ohm.
   • Press SET/ACCEL button. Resistance should be 646-714 ohms.
   • Press COAST button. Resistance should be 114-126 ohms.
   • Press RESUME button. Resistance should be 2090-2310 ohms.

If resistances are within specification switches are okay. If resistance is not within specification, perform resistance check at control switch to isolate. If switches check okay, check clockspring assembly, or related wiring circuits for opens or shorts.