Test No. 3: Actuator Position Sensor Circuit

Remove CC ECU with connector connected. See Figure. Turn ignition switch to ON position and backprobe CC ECU connector C15. Connect voltmeter positive lead to CC ECU connector C15 terminal No. 24/VR2 (Light Green wire). Connect voltmeter negative lead to CC ECU connector C15 terminal No. 25/VR3 (Blue/Red wire). Move actuator control arm counterclockwise from closed position (deceleration side) to open position (acceleration side). Ensure voltage changes gradually from 1.1-1.4 volts (fully closed) to 3.8-4.5 volts (fully opened). If voltage is not as specified, go to next step. If voltage is as specified, go to test for next trouble code displayed or appropriate symptom under TROUBLE SHOOTING BY SYMPTOM under TROUBLE SHOOTING.
Turn ignition switch to OFF position, remove cruise control actuator and disconnect actuator Gray 7-pin connector C1. Check resistance between actuator terminal No. 1 (Blue/Orange wire) and terminal No. 3 (Blue/Red wire). Resistance should be 2000 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace cruise control actuator and retest system.
Measure resistance between actuator terminal No. 2 (Light Green wire) and terminal No. 3 (Blue/Red wire) while moving control arm counterclockwise from deceleration side to acceleration side. Ensure resistance changes gradually from 500 ohms (fully closed) to 1800 ohms (fully opened). If resistance is as specified, go to next step. If resistance is not as specified, replace cruise control actuator and retest system.
Check harness and connector between CC ECU and actuator position sensor. Repair or replace as necessary. Check for loose connections at harness and connector. If connections are okay, check CC ECU. See PIN VOLTAGE TESTS . If found to be defective, replace CC ECU and retest system.