DTC P0340: Camshaft Position (CMP) Sensor: Procedure
- Turn ignition off. Loosen and retighten 2 engine ground bolts located near oil filler cap. Disconnect ECM and CMP sensor harness connectors. See Figure and Fig 1 . Check continuity of White wire between CMP sensor harness connector and ECM harness connector terminals No. 66 and 76. See Figure. Also check circuit for short to ground and short to voltage. Repair as necessary and retest system. If circuit is okay, go to next step.
- Check continuity between CMP sensor harness connector Black wire and engine ground. Also check circuit for short to voltage. Repair as necessary and retest system. If ground circuit is okay, go to next step.
- Remove CMP sensor. Inspect sensor for damage. Measure resistance between CMP sensor terminals. Ensure resistance is as follows:
- For Hitachi CMP sensor, resistance should be 1440-1760 ohms at 68°F (20°C).
- For Mitsubishi CMP sensor, resistance should be 2090-2550 ohms at 68°F (20°C).
If CMP sensor is damaged or resistance is not as specified, replace CMP sensor and retest system. If CMP sensor is okay, go to next step.
- Disconnect connector F-46 (Blue, 12-pin J/C No. 18). See Figure. Check continuity between ground and connector F-46 terminal No. 1. See WIRING DIAGRAMS article. Also check circuit for short to voltage. Repair as necessary and retest system. If shield circuit is okay, go to next step.
- No problem is indicated at this time. Problem may be intermittent. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - INTRODUCTION article.