Camshaft Position Sensor: Service and Repair

REMOVAL

1. Disconnect the battery ground cable.

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

2. Using the CID Sensor Adjusting Wrench T94T-12270-A, remove the CID sensor hold-down clamp screw and oil pump drive shaft from the rear of the cylinder block.

3. Disconnect the engine wiring harness connector at the Cylinder Identification (CID) sensor.

INSTALLATION

NOTE: Special Service Tool(s) Required
Description CID Testing Wiring Harness
Tool Number CID Testing Wiring HarnessT94T-50-B






1. Rotate crankshaft until TDC mark on the damper is accessible. If not present, place an additional mark on the damper at 26 degrees After Top Dead Center (ATDC). This position is 34 mm (1.34 in) counterclockwise from the TDC mark.

2. Position No. 1 cylinder to 26 ATDC between compression and ignition stroke. (Both intake and exhaust valves must be closed with TDC mark on vibration damper at pointer).






3. Lubricate oil pump drive pinion and O-ring on assembled oil pump drive gear and CID sensor with SM-2C 1013-A oil. Do not get oil above mounting flange.






4. Align the CID sensor rotor as shown with the trailing edge of the vane lined up with the short mark at the left-hand side of the plastic window.

NOTE: Normal CID sensor rotation is clockwise viewed from top of CID sensor.

5. Position the sensor above its hole at right angles to the block rear face.






6. Install the assembled CID sensor and oil pump drive gear into the engine. As the assembly is pushed into place, the camshaft gear will rotate the sensor vane clockwise toward the center window.






7. Rotate the CID sensor counterclockwise. Install clamp and screw finger-tight. Rotate the sensor back to its position at right angles to the back of the block.

8. Connect the CID Testing Wiring Harness T94T-50-B or equivalent to the CID sensor.

9. Connect the CID Testing Wiring Harness leads:
- Red harness wire to the battery positive terminal.
- Black harness wire to battery negative terminal.
- Voltmeter positive lead to harnesses white lead.
- Voltmeter negative lead to battery negative terminal.






10. Rotate engine two revolutions to take up slack in timing chain and return to No. 1 cylinder to its compression stroke.

11. Verify that No. 1 cylinder is on its compression stroke (both valves closed).

12. NOTE: No. 1 cylinder must be at 26 degrees ATDC to set CID sensor.

Continue to rotate the crankshaft until the new 26 degrees ATDC mark lines up with the timing pointer.

13. NOTE: The voltmeter will register battery voltage whenever the CID sensor closes and makes a complete circuit.

Rotate the CID sensor and stop at the exact point where the sensor switches from 0 to 12 volts on the voltmeter.

14. NOTE: The final movement to set the CID sensor must be in a counterclockwise direction.

Rotate the CID sensor clockwise past the CID switching point (from 12 to 0 volts).

15. Rotate the CID sensor counterclockwise and stop at the exact point the voltmeter switches from 0 to 12 volts.

16. Tighten the CID sensor hold-down bolt to 17-21 Nm (13-15 lb ft) using Sensor Adjusting Wrench T94T-12270-A.

17. Disconnect the testing wiring harness and the voltmeter.