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Test 2, Cruise Control Indicator Light Circuit

  1. Turn ignition off. Remove and inspect GAUGE fuse. If fuse is okay, go to next step. If fuse is blown, replace fuse. Turn ignition on. If fuse blows again, locate and repair short in wiring harness.
  2. Remove instrument cluster and disconnect connectors. Turn ignition on. Measure battery voltage between ground and cruise control indicator light power source terminal No. 5 (Yellow wire). If battery voltage is present, go to next step. If battery voltage is not present, locate and repair open in wiring harness between GAUGE fuse and instrument cluster connector.
  3. Remove and inspect cruise control indicator bulb. If bulb is okay, reconnect instrument cluster connectors and go to next step. If bulb is faulty, replace bulb and recheck system operation.
  4. Turn ignition off. Disconnect CC ECU connector. See Figure. Check for continuity between ground and CC ECU indicator light terminal No. 5 (Green/Yellow wire). If continuity does not exist, go to next step. If continuity exists, locate and repair short in wiring harness between CC ECU connector and instrument cluster.
  5. Turn ignition on. Measure battery voltage between ground and CC ECU indicator light terminal No. 5 (Green/Yellow wire). If battery voltage is present, replace CC ECU and recheck system operation. If battery voltage is not present, locate and repair open in wiring harness between CC ECU connector and instrument cluster.
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