DTC P0351-P0354 (LDK with Turbocharger)

 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

 Diagnostic Fault Information

Circuit Short to Ground High resistance Open Short to Voltage
Ignition Coil 1 Control Circuit

 P2300

 P0351

 P0351

 P2301
Ignition Coil 2 Control Circuit

 P2303

 P0352

 P0352

 P2304
Ignition Coil 3 Control Circuit

 P2306

 P0353

 P0353

 P2307
Ignition Coil 4 Control Circuit

 P2309

 P0354

 P0354

 P2310


 Circuit/System Description

The ignition system uses individual ignition coil/module assemblies for each cylinder. The engine control module (ECM) controls the individual coils by transmitting timing pulses on the ignition control (IC) circuit of each ignition coil/module to enable a spark event. When the engine is running the ECM monitors each IC circuit for improper voltage levels.

 Conditions for Running the DTCs


• The engine speed is less than 6,000 RPM.
• The ignition 1 voltage signal is between 9-18 V.
• DTCs P0351, P0352, P0353, P0354 run continuously when the above conditions are met.
 Conditions for Setting the DTCs

The ECM detects an open in the circuit or the ignition coil/module for greater than 4 seconds continuously or 50 seconds cumulative.

  Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, P0354 are Type B DTCs.

 Conditions for Clearing the MIL/DTC

DTCs P0351, P0352, P0353, P0354 are Type B DTCs.

 Reference Information

 Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

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. Engine running, observe the following scan tool control circuit status parameters for the appropriate cylinder T8 ignition coil:
• Ignition Coil 1-4 Control Circuit Low Voltage Test Status
• Ignition Coil 1-4 Control Circuit Open Test Status
• Ignition Coil 1-4 Control Circuit High Voltage Test Status

Each parameter should display Not Run or OK.
2. With the engine idling, read the DTC Info with a scan tool. DTC P0351, P0352, P0353 or P0354 are not set.
3. 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 the 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 components connected to the ignition voltage circuit and replace as necessary.
8. Engine running, observe the Ignition Coil 1-4 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 1-4 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 an open circuit.
12. Engine running, observe the Ignition Coil 1-4 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 T8 ignition coil.
 Repair Instructions


• Ignition Coil Replacement

• Control Module References for ECM replacement, setup, and programming
 Repair Verification

If the customer concern was a flashing MIL, then perform the following procedure:


1. Install any components that have been removed or replaced during diagnosis.
2. Perform any adjustments, programming or setup procedures that are required when a component is removed or replaced.
3. Clear the DTCs.
4. Turn OFF the ignition for 60 seconds.
5. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure.

6. To verify that the performance of the catalytic converter has not been affected by the condition that set this DTC, perform the Repair Verification for DTC P0420. Refer to DTC P0420.