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Cruise Control Switch Circuit

  1. Perform SET/COAST, RES/ACC, and CANCEL SWITCHES tests in CRUISE CONTROL FUNCTION TEST  under TROUBLE SHOOTING. If SET/COAST, RES/ACC or CANCEL switch input signals are not as specified, go to next step. If input signals are as specified, no problem is indicated at this time. Fault may be intermittent. If sent here from SYMPTOM DIAGNOSIS, perform next test listed.
  2. Turn ignition switch to OFF position. Disable air bag system. See AIR BAG RESTRAINT SYSTEMS article. Remove steering wheel center pad (air bag module) and disconnect cruise control switch 6-pin connector. Measure resistance between cruise control switch connector terminals No. 4 (White/Black wire) and No. 5 (Green wire) with switch in specified positions. See CRUISE CONTROL SWITCH RESISTANCES  table. If resistance is as specified, go to next step. If resistance is not as specified, replace cruise control switch and retest system.
    CRUISE CONTROL SWITCH RESISTANCES

    Switch Position Ohms
    Off Infinity
    RES/ACC 210-270
    SET/COAST 560-700
    CANCEL 1380-700
  3. Measure resistance between cruise control switch connector terminals No. 4 (White/Black wire) and No. 5 (Green wire) with switch in specified positions. See CRUISE CONTROL SWITCH VOLTAGES  table. If voltage is as specified, go to next step. If voltage is not as specified, replace cruise control switch and retest system.
    CRUISE CONTROL SWITCH VOLTAGES

    Switch Position Voltage
    Neutral 9-14
    MAIN Less Than One Volt
    RES/ACC 2.1-4.0
    SET/COAST 4.0-7.1
    CANCEL 6.0-10.1
  4. Check wiring harness and connectors between ECM, cruise control switch and ground. Repair as necessary and retest system. If wiring harness and connectors are okay, go to next step.
  5. Repeat step  1. If SET/COAST, RES/ACC or CANCEL switch input signals are still not as specified, replace ECM and retest system. If input signals are as specified, no problem is indicated at this time. Fault may be intermittent. If sent here from SYMPTOM DIAGNOSIS, perform next test listed.
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