P0351
DTC P0351-P0354
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.
DTC Descriptor
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/System Description
Ignition voltage is supplied to the ignition coil. The engine control module (ECM) provides a ground for the ignition coil control circuits. When the ECM removes the ground path of the ignition primary coil, the magnetic field produced by the coil collapses. The collapsing magnetic field produces a voltage in the secondary coil which ignites the spark plugs. The sequencing and timing are controlled by the ECM.
Conditions for Running the DTC
* The engine is running.
* The ignition voltage is greater than 5 V.
* The DTC runs continuously once the above condition is met.
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.
Action Taken When the DTC Sets
DTCs P0351, P0352, P0353 and P0354 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0351, P0352, P0353 and P0354 are Type B DTCs.
Diagnostic Aids
If the condition is intermittent, moving the related harnesses and connectors, with the engine running, while monitoring the appropriate scan tool Misfire Current Cylinder parameter and the appropriate Ignition Coil Control Circuit Status parameter this may help isolate the condition.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation
* Electronic Ignition System Description Description and Operation
* Hybrid Modes of Operation Description Hybrid Modes of Operation Description
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Programming and Relearning for scan tool information
Circuit/System Verification
1. Start the engine.
2. Observe the scan tool Cylinder 1-4 Current Misfire Counter parameters. The counters should not be incrementing.
3. Observe the appropriate Ignition Coil Control Circuit Status parameter should read OK.
4. 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. Vehicle OFF, disconnect the harness connector at the K35 ignition coil module.
2. Vehicle in Service Mode, verify that a test lamp does not illuminate between the appropriate control circuit listed below and ground.
* Ignition coil 1 control terminal D
* Ignition coil 2 control terminal E
* Ignition coil 3 control terminal F
* Ignition coil 4 control terminal G
• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
3. Verify that a test lamp does not illuminate between the appropriate control circuit listed below and B+.
* Ignition coil 1 control terminal D
* Ignition coil 2 control terminal E
* Ignition coil 3 control terminal F
* Ignition coil 4 control terminal G
• If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 ECM.
4. Vehicle OFF, all systems OFF. This may take up to 2 minutes for all vehicle systems to power down.
5. Connect a 3 A fused jumper wire to the appropriate control circuit listed below and ground.
* Ignition coil 1 control terminal D
* Ignition coil 2 control terminal E
* Ignition coil 3 control terminal F
* Ignition coil 4 control terminal G
Note: This procedure needs to be performed quickly because once DTC P0AB9 or P16E0 sets, the engine will not turn over. If this occurs, turn the Vehicle OFF, all systems OFF. This may take up to 2 minutes for all vehicle systems to power down and then retest.
6. Attempt to start the engine, observe the appropriate Ignition Coil 1-4 Control Circuit Low Voltage Test Status parameter with a scan tool. The parameter should display Malfunction.
• If not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
7. If all circuits test normal, test or replace the K35 ignition coil module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Ignition Coil Replacement Service and Repair
* Control Module References Programming and Relearning for engine control module replacement, setup, and programming