Diagnostic Procedure (2.4L)
WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Loosen and retighten engine ground bolts. See Figure . Disconnect CKP sensor harness connector. See Fig 1 . Disconnect ECM harness connector. See Figure or Figure . Check continuity of Blue wire between CKP sensor harness connector terminal No. 2 and ECM harness connector terminal No. 47. See Figure . Also, check circuit for short to ground and short to voltage. If problem is found, go to next step. If problem is not found, go to step 3 .
- Check the following:
- Check for poor connection at Gray, 9-pin connector E202 terminal No. 7 (Blue wire). See Fig 2 . Connector E202 is located on right side of engine compartment. See Figure or Figure .
- Check for poor connection at Gray, 3-pin connector F25 terminal No. 1 (Blue wire). Connector F25 is located in right rear of engine compartment. See Figure .
- Check for open or short between CKP sensor and ECM.
Repair as necessary.
- Reconnect ECM harness connector. Check continuity between engine ground and CKP sensor harness connector terminal No. 1 (Black/White wire). Continuity should exist. Also, check circuit for short to voltage. If problem is found, go to next step. If problem is not found, go to step 5 .
- Check the following:
- Check for poor connection at Gray, 9-pin connector E202 terminal No. 6 (Black/White wire). See Fig 2 . Connector E202 is located on right side of engine compartment. See Figure or Figure .
- Check for poor connection at Gray, 3-pin connector F25 terminal No. 2 (Black/White wire). Connector F25 is located in right rear of engine compartment. See Figure .
- Check for open or short between CKP sensor and ECM.
Repair as necessary.
- Disconnect Gray, 9-pin connector E32 from connector E202 located on right side of engine compartment. See Figure or Figure . Check continuity between ground and connector E32 terminal No. 2. See Fig 2 . Continuity should exist. Also, check circuit for short to voltage. If problem is found, go to next step. If problem is not found, go to step 7 .
- Check the following:
- Check for poor connection at Gray, 3-pin connector F25 terminal No. 3. Connector F25 is located in right rear of engine compartment. See Figure .
- Check Gray, 6-pin joint connector No. 1 (connector F31) located near ECM. See Figure . Continuity should exist between all terminals.
- Check for open or short between connector E32 and engine ground.
Repair as necessary.
- Remove CKP sensor. Visually inspect sensor for chipping. Measure resistance between sensor terminals. Resistance should be about 512-632 ohms at 68°F (20°C). Replace sensor if it is chipped or if resistance is not as specified. If sensor is okay, go to next step.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.