P0353
DTC P0351-P0354 (LUW)
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 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/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 6 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
The following conditions can also set the DTC:
* Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits, may cause this DTC to set.
* The MIL indicator flashes when there is an engine misfire.
* If the condition is intermittent, moving the related harnesses and connectors, with the engine operating, while monitoring the appropriate scan tool Misfire Current Cylinder parameter may help to isolate the condition.
Reference Information
Schematic Reference
Engine Controls Schematics (LUW) [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Sunshade - Left (D6I)
Description and Operation
Electronic Ignition System Description Description and Operation
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 Control Module References for scan tool information
Circuit/System Verification
1. Start and idle the engine.
2. Observe the scan tool Cylinder 1 Current Misfire Counter, Cylinder 2 Current Misfire Counter, Cylinder 3 Current Misfire Counter and Cylinder 4 Current Misfire Counter parameters. The counters should not be incrementing.
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 T8 Ignition Coil.
2. Test for less than 5 ohm between the ground circuit terminal B and ground
• If greater than the specified range, repair the ground circuit for an open/high resistance.
3. Ignition OFF for 1 min, test for less than 5 ohm between the low reference circuit terminal C and ground.
• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal A and ground.
• 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 F9 is open, test all components connected to the ignition voltage circuit and replace as necessary.
Note: Set the DMM to the DC Hertz scale for this test.
5. Connect a DMM between the appropriate ignition 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
6. Engine cranking, test for greater than 1.5 hertz between each of the appropriate ignition control circuit and ground.
• If less than the specified range, test the ignition control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
7. If all circuits test normal, test or replace the T8 Ignition Coil.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Ignition Coil Replacement Service and Repair
* Control Module References Control Module References for engine control module replacement, programming, and setup