Camshaft Position Sensor: Service and Repair

Removal

CAUTION: Prior to removal of the camshaft position sensor (CMP sensor)(12126), set cylinder No. 1 to zero degrees top dead center (TDC) of compression stroke. Then note the position of the camshaft position sensor electrical connector. The installation procedure required that the connector be located in the same position.

1. Disconnect battery ground cable.

2. Disconnect fuel charging wiring connector from camshaft position sensor.

3. Remove camshaft position sensor retaining screws and camshaft position sensor from camshaft position sensor housing.

4. If removing camshaft position sensor housing from the cylinder block, proceed with Removal Step 5.

6. Note: Remove the oil pump intermediate shaft with the camshaft position sensor.
Remove camshaft position sensor from cylinder block.

Installation

CAUTION: If the replacement camshaft position sensor housing does not contain a plastic locator cover tool, a special service tool such as Syncro Positioning Tool T93P-12200-A must be obtained prior to installation of the replacement camshaft position sensor. Failure to follow this procedure will result in improper camshaft position sensor alignment. This will result in the ignition system and fuel system being out of time with the engine, possibly causing engine damage.






1. If the plastic locator cover tool is not attached to the replacement camshaft position sensor, attach Syncro Positioning Tool T93P-12200-A as follows:
a. Engage camshaft position sensor housing vane into the radial slot of the tool.
b. Rotate tool on camshaft position sensor housing until tool boss engages notch in camshaft position sensor.

2. Transfer oil pump intermediate shaft from old camshaft position sensor housing to replacement camshaft position sensor housing.

3. Install camshaft position sensor housing so that drive gear engagement occurs when arrow on locator tool is pointed approximately 30 degrees counterclockwise from the rear face of the cylinder block. This step will locate camshaft position sensor electrical connector in the pre-removal position.

4. Install hold-down clamp (washer and bolt) and tighten to 20-30 Nm (15-22 lb-ft).

5. Remove Syncro Positioning Tool T93P-12200-A.

6. CAUTION: If camshaft position sensor electrical connector is not positioned properly, DO NOT reposition the connector by rotating the camshaft position sensor housing. This will result in the ignition system and fuel system being out of time with the engine, possibly causing engine damage. Remove the camshaft position sensor housing and repeat installation procedure, beginning with Step 1.

Install camshaft position sensor and retaining screws. Tighten screws to 2.5-3.5 Nm (22-31 lb-in).

7. Connect fuel charging wiring connector to camshaft position sensor.

8. Connect battery ground cable.