P0352
DTC P0352
CIRCUIT DESCRIPTION
The ignition system uses individual ignition coil/module assemblies for each cylinder. The powertrain control module (PCM) controls the individual coils by transmitting timing pulses on the ignition control (IC) circuit of each ignition coil/module to enable a spark event. The PCM monitors each IC circuit for improper voltage levels. Each ignition coil/module has the following circuits:
- An ignition voltage circuit
- A ground
- An IC circuit
If the PCM detects an improper voltage level on the IC circuit of the ignition coil/module, it will set the following corresponding DTCs:
- DTC P0351 for ignition coil/module 1
- DTC P0352 for ignition coil/module 2
- DTC P0353 for ignition coil/module 3
- DTC P0354 for ignition coil/module 4
DTC DESCRIPTORS
This diagnostic procedure supports the following DTCs:
- 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
CONDITIONS FOR RUNNING THE DTC
- The engine is running.
- DTC P0351-P0354 runs continuously once the above conditions are met.
CONDITIONS FOR SETTING THE DTC
The PCM detects one of the following failures on the IC circuit of the ignition coil/module for less than 1 second.
- An open
- A short to ground
- A short to voltage
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 3 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.
TEST
