FixVault

Cruise Control Indicator Inoperative

WARNING: This page is about a different car, the 1997 Mercury Mountaineer and 1997 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch off. Disconnect cruise control servo connector C171 located at right rear of engine compartment. See Fig 1 . Turn ignition switch on. Connect fused jumper wire between ground and cruise control connector C171, terminal No. 1 (Orange/Light Blue wire). If cruise control indicator illuminates, replace cruise control servo and retest system. If cruise control indicator does not illuminate, go to next step.
    Fig 1: Identifying Cruise Control Servo Connector C171
    G97J28117Courtesy of FORD MOTOR CO.
  2. Turn ignition switch off. Disconnect headlight switch connector C216 located under the left side of the instrument panel. See Figure . Turn ignition switch on. Measure voltage between ground and headlight switch connector C216, terminal No. 4 (Brown/White wire). If voltage is more than 10 volts, go to step 5). If voltage is less than 10 volts, go to next step.
  3. Turn ignition switch off. Disconnect dimmer relay located in relay module behind center of instrument panel. See Figure . Turn ignition switch on. Measure voltage between ground and dimmer relay connector cavity No. 4 (Red/Yellow wire). If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts repair open in Red/Yellow wire between relay connector and fuse No. 11 located in interior fuse panel and retest system.
  4. Turn ignition switch off. Measure resistance between dimmer relay terminals No. 3 and 4. See Figure . If resistance is less than 5 ohms, repair open in Brown/White wire between dimmer relay connector and headlight switch connector and retest system. If resistance is more than 5 ohms, replace dimmer relay and retest system.
  5. Turn ignition switch off. Disconnect dimmer module connector C219 located on left side of steering column. See Figure . Measure resistance of Light Blue/Red wire between headlight switch connector C216, terminal No. 9 and dimmer module connector C219, terminal No. 4. See Figure and Figure . If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Light Blue/Red wire between headlight switch connector and dimmer module connector and retest system.
  6. Ensure headlight switch is off. Measure resistance between headlight switch terminals No. 4 and 8. Turn headlight switch on (headlights on). Measure resistance between headlight switch terminals No. 8 and 9. See Figure . If resistance in both tests is less than 5 ohms, go to next step. If any resistance is more than 5 ohms, replace headlight switch and retest system.
  7. Turn ignition switch off. Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Measure resistance of Orange/Black wire between instrument cluster connector C286, terminal No. 5 and headlight switch connector C216, terminal No. 8. See Figure and Figure . If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Orange/Black wire between instrument cluster connector and headlight switch connector and retest system.
  8. Measure resistance between instrument cluster connector C286, terminal No. 4 (Orange/Light Blue wire) and cruise control servo connector C171, terminal No. 1. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Orange/Light Blue wire between instrument cluster connector and cruise control servo connector and retest system.
  9. Measure continuity between terminals of cruise control indicator bulb. If continuity exists, replace instrument cluster printed circuit and retest system. See PRINTED CIRCUIT  under REMOVAL & INSTALLATION. If continuity does not exist, replace bulb and retest system.