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Test 4, Speed Sensor Circuit

  1. Perform VEHICLE SPEED SENSOR test under CRUISE CONTROL CIRCUIT FUNCTION TEST  under TROUBLE SHOOTING. If speed sensor input signals are as specified, go to test for next trouble code displayed or appropriate TROUBLE SHOOTING BY SYMPTOM . If input signals are not as specified, go to next step.
  2. Locate speed sensor on transmission and remove. Disconnect 3-pin connector. Connect positive battery lead to connector terminal No. 1 (Yellow wire) and negative battery lead to terminal No. 2 (Red wire). Connect voltmeter positive lead to terminal No. 3 (Blue/Red wire) and voltmeter negative lead to speed sensor terminal No. 2. Ensure a change of 0-11 volts or more occurs 4 times per each revolution of speed sensor shaft. Replace speed sensor if operation is not as specified. If sensor operation is as specified, go to next step.
  3. Check harness and connectors between CC ECU, speed sensor and combination meter (instrument cluster). Repair or replace as necessary. Check for loose connections. If connections are okay, replace CC ECU and retest system.
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