Diagnosis & Repair
WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
- Check resistance of crankshaft position sensor. See CRANKSHAFT POSITION SENSOR under IGNITION SYSTEMS in BASIC DIAGNOSTIC PROCEDURES - V6 & V8 article. Crankshaft position sensor is located at front of engine, just above crankshaft pulley. See Fig 2. If crankshaft position sensor is okay, go to next step. If crankshaft position sensor is defective, replace crankshaft position sensor.
- Check for open and short in wiring harness and electrical connectors between crankshaft position sensor and ECM. See WIRING DIAGRAMS article. ECM is located behind glove box and heater duct. See Figure. If wiring harness and electrical connectors are okay, go to next step. If wiring harness or electrical connector is defective, repair as necessary.
- With crankshaft position sensor removed, inspect crankshaft position sensor and teeth on signal plate located on the crankshaft sprocket for damage. If crankshaft position sensor or signal plate is damaged, replace components as necessary. If crankshaft position sensor and signal plate are okay, replace ECM.
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