P2316

DTC P2301, P2304, P2307, P2310, P2313, or P2316

Circuit Description

The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. The engine control module (ECM) controls the ignition system operation. The ECM controls each coil using the IC circuits. The ECM commands the IC circuit low when a spark event is requested. Each ignition coil is supplied the following circuits:

* The IC circuit
* The ignition 1 voltage circuit
* Two ground circuits

The sequencing and timing are ECM controlled. If the ECM detects the IC circuit is shorted to voltage, this DTC sets.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

* DTC P2301 Ignition Coil 1 Control Circuit High Voltage
* DTC P2304 Ignition Coil 2 Control Circuit High Voltage
* DTC P2307 Ignition Coil 3 Control Circuit High Voltage
* DTC P2310 Ignition Coil 4 Control Circuit High Voltage
* DTC P2313 Ignition Coil 5 Control Circuit High Voltage
* DTC P2316 Ignition Coil 6 Control Circuit High Voltage

Conditions for Running the DTC

* The engine is operating.
* The engine speed is between 480-5,000 RPM.
* The ignition voltage is between 10.5-18 volts.
* This DTC runs continuously once the above conditions are met.

Conditions for Setting the DTC

* The ECM detects the IC circuit is shorted to voltage.
* The above condition is present for less than 4 seconds.

Action Taken When the DTC Sets

* The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
* The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

* The control module turns OFF the malfunction indicator lamp (MIL) after 4 consecutive ignition cycles that the diagnostic runs and does not fail.
* A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
* A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
* Clear the MIL and the DTC with a scan tool.

Diagnostic Aids

The following table illustrates the ECM connector locations:





* Use the J 35616 Connector Test Adapter Kit for any test that requires probing the ECM harness connector or a component harness connector.
* Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits, may cause this DTC to set.
* For an intermittent condition, Refer to Intermittent Conditions. Intermittent Conditions

Test Description

Step 1 - Step 9:

Step 10 - Step 15:

The number below refers to the step number on the diagnostic table.
4. This step tests that the ECM is commanding the ignition coil ON and OFF via the IC circuit. If the frequency is not between 3-20 Hz, test the ignition control circuit for a short to voltage.