P1366

CIRCUIT DESCRIPTION
There are two separate ignition module assemblies, one for each bank of cylinders. Each assembly contains an Ignition Control (IC) module and three ignition coils. Each IC module consists of the following circuits:
^ Ignition 1 voltage
^ Ground
^ IC timing low reference
^ IC control circuits for cylinders 1-6

Each ignition coil connects directly to its spark plug via a short boot. The IC circuits transmit timing pulses from the Powertrain Control Module (PCM) to the IC modules, which triggers the coils to fire the plugs in the correct sequence. The PCM monitors each IC circuit for improper voltage levels.

CONDITIONS FOR RUNNING THE DTC
^ The ignition voltage is between 9.0-17.0 volts.
^ The conditions are met for less than 1.0 second.

CONDITIONS FOR SETTING THE DTC
The PCM detects an incorrect voltage potential on the ignition control circuit.

ACTION TAKEN WHEN THE DTC SETS
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
^ The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.

TEST DESCRIPTION

Steps 1-7:

Steps 8-19:

Steps 20-27:

The numbers below refer to the step numbers on the diagnostic table.
2. With no fault detected, the scan tool will display OK continuously.
If a fault is detected, the display may fluctuate between OK and Fault, or display Fault continuously.
If Fault is displayed, even momentarily, this should be considered fault present.
4. Refer to the system diagrams for the fuses which supply these circuits.