Camshaft Position Sensor: Service and Repair

PREPARATION
Before adjusting the sensor, remove the following components:
1. Air cleaner outlet tube
2. Transmission dipstick (AT model only)
3. Upper intake manifold

After adjusting the sensor, install the following components:
1. Upper intake manifold
2. Transmission dipstick (AT model only)
3. Air cleaner outlet tube




ADJUSTMENT
1. Turn the ignition key to the LOCK position. Make sure that the parking brake is engaged and the transmission is in either (Park) or (Neutral).
2. Rotate crankshaft until TDC mark on the damper is accessible.
3. 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 Top Dead Center (TDC) mark.
4. Position No. 1 cylinder to TDC between compression and ignition stroke.

Note: Both intake and exhaust valves must be closed with TDC mark on vibration damper at pointer.




5. Loosen CID sensor hold down bolt and remove it.
6. Lubricate oil pump drive pinion and O-ring on assembled oil pump drive gear and CID sensor with engine oil.

Note: Do not get oil above mounting flange.




7. 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.
8. Position the sensor above its hole at right angles to the block rear face.




9. 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 of the window.




10. 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.
11. Install the Breakout Box (49 UN01 130) to the PCM.
12. Connect the voltmeter positive lead to terminal number 85 and the negative lead to terminal number 103.
13. Rotate engine two revolutions to take up slack in timing chain and return No. 1 cylinder to its compression stroke.

Note: No. 1 cylinder must be at 26 degrees After Top Dead Center (ATDC) to set CID sensor

14. Verify that No. 1 cylinder is on its compression stroke.




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

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

16. While rotating the CID sensor, note the exact point where the sensor switches from 0 to 12 volts on the voltmeter.

Note: The final movement to set the CID sensor must be in a COUNTERCLOCKWISE direction.

17. Rotate the CID sensor CLOCKWISE past the CID switching point (from 12 to 0 volts).
18. Rotate the CID sensor COUNTERCLOCKWISE and stop at the exact point the voltmeter switches from 0 to 12 volts.




19. Tighten the CID sensor hold-down bolt to 17-21 N-m (13-15 ft-lb).