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DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)

DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)

Diagnostic Instructions


Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptors

DTC P0351

Ignition Coil 1 Control Circuit

DTC P0352

Ignition Coil 2 Control Circuit

DTC P0353

Ignition Coil 3 Control Circuit

DTC P0354

Ignition Coil 4 Control Circuit

DTC P0355

Ignition Coil 5 Control Circuit

DTC P0356

Ignition Coil 6 Control Circuit

DTC P2300

Ignition Coil 1 Control Circuit Low Voltage

DTC P2301

Ignition Coil 1 Control Circuit High Voltage

DTC P2303

Ignition Coil 2 Control Circuit Low Voltage

DTC P2304

Ignition Coil 2 Control Circuit High Voltage

DTC P2306

Ignition Coil 3 Control Circuit Low Voltage

DTC P2307

Ignition Coil 3 Control Circuit High Voltage

DTC P2309

Ignition Coil 4 Control Circuit Low Voltage

DTC P2310

Ignition Coil 4 Control Circuit High Voltage

DTC P2312

Ignition Coil 5 Control Circuit Low Voltage

DTC P2313

Ignition Coil 5 Control Circuit High Voltage

DTC P2315

Ignition Coil 6 Control Circuit Low Voltage

DTC P2316

Ignition Coil 6 Control Circuit High Voltage

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Ignition Voltage - Bank 1 P0300-P0306, P2300, P2306, P2312 P0300-P0306, P0351, P0353, P0355 - P0300, P0301, P0303, P0305
Ignition Voltage - Bank 2 P0300-P0306, P2303, P2309, P2315 P0300-P0306, P0352, P0354, P0356 - P0300, P0302, P0304, P0306
Ignition Coil 1 Control Circuit P2300 P0301, P0351 P2301 P0300, P0301
Ignition Coil 2 Control Circuit P2303 P0302, P0352 P2304 P0300, P0302
Ignition Coil 3 Control Circuit P2306 P0303, P0353 P2307 P0300, P0303
Ignition Coil 4 Control Circuit P2309 P0304, P0354 P2310 P0300, P0304
Ignition Coil 5 Control Circuit P2312 P0305, P0355 P2313 P0300, P0305
Ignition Coil 6 Control Circuit P2315 P0306, P0356 P2316 P0300, P0306
Low Reference - P0351, P0352, P0353, P0354, P0355, P0356 - -


Circuit/System Description

The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. Ignition voltage is supplied to each bank of ignition coils. 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.

The sequencing and timing are ECM controlled.

Conditions for Running the DTC


The engine is operating.

The ignition voltage is between 10-18 volts.

The engine speed is between 400-5,000 RPM.

The DTCs run continuously once per crankshaft revolution after the above conditions are met for 20 crankshaft revolutions.


Conditions for Setting the DTC

P0351-P0356

The ECM detects the ignition control circuit is open for greater than 4 seconds or a cumulative of 30 seconds.

P2300, P2303, P2306, P2309, P2312, or P2315

The ECM detects the ignition control circuit is shorted to ground for greater than 4 seconds or a cumulative of 30 seconds.

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

The ECM detects the ignition control circuit is shorted to voltage for greater than 4 seconds or a cumulative of 30 seconds.

Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316 are Type B DTCs.

Diagnostic Aids


Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits, may cause this DTC to set.

If the condition is intermittent, moving the related harnesses and connectors, with the engine operating, while monitoring a scan tool to check suitable cylinder parameter for misfire. This may help to pin-point the problem.


Reference Information

Schematic Reference

Engine Controls Schematics (3.0L (LF1)) Engine Controls Schematics (2.8L (LAU))

Connector End View Reference

Component Connector End Views

Description and Operation

Electronic Ignition System Description

Electrical Information Reference


Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections

Wiring Repairs


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1. Operate the engine for 30 seconds. Note the DTC information with a diagnostic tool. DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 shall not be activated.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.


Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.

2. Ignition OFF, all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 Ω between the ground circuit terminal A and ground.

3. If greater than the specified range, repair the ground circuit for an open/high resistance.

4. Ignition OFF, test for less than 5 Ω between the low reference circuit terminal B and ground.

5. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

6. Ignition ON, verify that a test lamp illuminates between ignition voltage circuit terminal D and ground.

7. If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as necessary.

8. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not Run.

9. If test status is Malfunction test for open or short to ground.

10. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.

11. If test status is Malfunction test for open circuit.

12. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not Run.

13. If test status is Malfunction test for short to voltage.

14. If all circuits test normal, test or replace the appropriate T8 ignition coil.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Ignition Coil Replacement - Bank 1

Ignition Coil Replacement - Bank 2

Control Module References for engine control module replacement, setup, and programming