LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 1996 >> 4Runner Base, 4WD, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Circuit Testing >> Test 8, Idle Switch Circuit >> 4-Cylinder Models

4-Cylinder Models

  1. Remove CC ECU with connectors connected. Disconnect Engine Control Module (ECM), and ABS ECU connectors. Turn ignition on.
  2. Using voltmeter positive lead, backprobe CC ECU connector terminal No. 21/IDL (Yellow/Blue wire) and connect negative lead to ground. Ensure battery voltage exists with throttle valve fully opened and less than 2 volts or less exists with throttle valve fully closed. If voltage is as specified, go to test for next trouble code displayed or appropriate TROUBLE SHOOTING BY SYMPTOM . If voltage is not as specified, go to next step.
  3. Disconnect throttle position sensor 4-pin Black connector. Measure resistance between connector terminal No. 3 (Yellow/Blue wire) and terminal No. 4 (Brown/Black wire). Ensure one megohm resistance or more exists with throttle valve fully opened and less than 2 ohms exists with throttle valve fully closed. If resistance is as specified, go to next step. If resistance is not as specified, replace throttle position sensor.
  4. Check harness and connectors between CC ECU and throttle position sensor, and between throttle position sensor and ground. Repair or replace as necessary. If harness and connectors are okay, replace CC ECU and retest system.
scientia non olet · About LEMON Manuals