Removal & Installation
- If equipped with Regular Production Option (RPO) HP2, disconnect the Energy Storage Box (ESB).
- Remove the spark plug wire from the ignition coil.
- Disconnect the ignition coil electrical connector.
If equipped with Regular Production Option (RPO) HP2, remove the auxiliary heater water pump bracket bolts.
- Remove the auxiliary heater water pump from the studs, and reposition out of the way.
- If equipped with RPO HP2, remove the starter/alternator control module (SGCM) cover bolts, and cover.
- Remove the 3-phase cable nuts to the SGCM.
- Remove the 3-phase cable from the SGCM.
- Remove the 3-phase cable bracket nuts (2).
Remove the 3-phase cable bracket (1) from the studs, and reposition the cable and bracket out of the way.
Remove the ignition coil bolts.
- Remove the ignition coil.
- Install the ignition coil.
Install the ignition coil bolts.
- Tighten the bolts to 71 inch lbs. (8 Nm).
- If equipped with RPO HP2, position the cable (w/bracket) and install the 3-phase cable bracket to the studs.
- If equipped with RPO HP2, position the auxiliary heater water pump and install it onto the studs.
- Connect the ignition coil electrical connector.
- Install the spark plug wire to the ignition coil.
- If equipped with RPO HP2, connect the ESB
- Connect a scan tool to the vehicle-s Data Link Connector and follow scan tool instructions to download Diagnostic Trouble Codes (DTCs).
Diagnostic Trouble Code (DTC) list:
DTC P0351 Ignition Coil 1 Control CircuitDTC P0352 Ignition Coil 2 Control CircuitDTC P0353 Ignition Coil 3 Control CircuitDTC P0354 Ignition Coil 4 Control CircuitDTC P0355 Ignition Coil 5 Control CircuitDTC P0356 Ignition Coil 6 Control CircuitDTC P0357 Ignition Coil 7 Control CircuitDTC P0358 Ignition Coil 8 Control CircuitDTC P1351 Ignition Coil Control Circuit High VoltageDTC P1361 Ignition Coil Control Circuit Low Voltage
- If a DTC indicates an ignition coil is faulty before replacing the ignition coil check wiring for short circuits, broken or chafed wires, loose connections and corroded terminals.