Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect CKP sensor connector. Using ohmmeter, measure resistance between CKP sensor terminals. Resistance should be 1630-2740 ohms with engine temperature at 14-122°F (-10-50°C) or 2065-3225 ohms with engine temperature at 122-212°F (50-100°C). See Fig 1. If resistance is as specified, go to next step. If resistance is not as specified, replace CKP sensor.
- Check for short or open circuit in wiring harness between ECM E2 connector and CKP sensor. See Figure-Fig 3
. See ENGINE PERFORMANCE
in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair wiring as necessary. If wiring harness is okay, go to next step.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Check CKP sensor for proper installation. Also inspect signal plate. Repair or replace as necessary. If CKP sensor and signal plate are okay, replace ECM and retest.