P1362

Circuit Description
The Ignition Control (IC) Module sends signals that the PCM requires for fuel control and spark advance calculations. At the start of engine crank, the IC Module controls spark advance. When the second 3X reference pulse is recognized by the PCM, the PCM applies 5.0 volts to the Bypass circuit, commanding the IC Module to switch spark advance to PCM control. If the PCM detects a short to voltage in the Bypass circuit, DTC P1362 will set. A short to ground in the IC circuit or Bypass circuit will cause both DTC P1362 and DTC P1362 to set. The engine will start and may run with IC Module controlling spark timing.

Conditions for Running the DTC
The engine is running.

Conditions for Setting the DTC
^ The PCM detects a short to voltage in the Bypass circuit.
^ The conditions is present for 300 3X reference periods (100 crankshaft revolutions).

Action Taken When the DTC Sets
^ The PCM will illuminate the MIL during the second consecutive trip in which the diagnostic test has been run and failed.
^ The PCM will store conditions which were 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 during the third consecutive trip in which the diagnostic has been run and passed.
^ 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 Info function or by disconnecting the PCM battery feed.

Diagnostic Aids
Check for the following conditions:
^ Poor connection at the PCM. Refer to Intermittents and Poor Connections Diagnosis.
Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. Refer to Intermittents and Poor Connections Diagnosis. Refer to Repairing Connector Terminals in Diagrams.
^ Damaged harness. Refer to Wiring Repairs.
Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the IC Module, turn the ignition on and observe a digital multimeter connected between the IC circuit and battery positive voltage while moving connectors and wiring harnesses related to the IC Module. A change in voltage will indicate the location of the malfunction. Refer to Wiring Repairs. Symptom Related Diagnostic Procedures

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.