P0358

Diagnostic Chart:

Engine Controls Schematics: Ignition Control Module - Front Bank:

CIRCUIT DESCRIPTION
The electronic ignition system uses an individual ignition coil for each cylinder. There are two separate ignition module assemblies located in the camshaft cover of each cylinder bank. Each ignition module assembly contains an ignition control module and four ignition coils. Each ignition coil connects directly to a spark plug using a boot. This arrangement eliminates the need for secondary ignition wires. The ignition module assemblies receive power from a fused ignition teed. Both ignition module assemblies connect to chassis ground. A Reference Low and four Ignition Control (IC) circuits connect each ignition module assembly to the PCM. The PCM uses the individual IC circuits to control coil sequencing and spark timing for each ignition coil. The IC circuits transmit timing pulses from the PCM to the ignition control module to trigger the ignition coil, and fire the spark plug. The PCM monitors each IC circuit for improper voltage levels. If the PCM detects an improper voltage level on the IC circuit for cylinder #8, DTC P0358 will set.

CONDITIONS FOR RUNNING THE DTC
The engine is running and ignition 1 is powered.

CONDITIONS FOR SETTING THE DTC
^ The PCM detects an improper voltage on the IC circuit for cylinder #8.
^ The condition exists for less than 1 second.

ACTION TAKEN WHEN THE DTC SETS
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the diagnostic test runs and fails.
^ The PCM stores the conditions present when the DTC set as Freeze Frame and Fail Records data.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The PCM will turn the MIL OFF after the third consecutive trip in which the diagnostic runs and passes.
^ The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
^ The DTC can be cleared by using the scan tool Clear DTC Information function.

DIAGNOSTIC AIDS
If the condition is intermittent, refer to Intermittent Conditions. Intermittent Conditions