General Description

The PCM computes ignition timing in response to the signals from several sensors. The timing is fixed during the start-up phase. However, when the engine has been started and the vehicle is driven away, the ECM computes the optimum timing based on the engine speed, load and temperature.The ignition timing is fixed BTDC 5 and DTC P1330 is set when connecting Ignition control terminal of Multipurpose Check Connector and ground. If disconnect Ignition control terminal of Multipurpose Check Connector and ground, the DTC is erased automatically.Make sure to check for short circuit to ground between Ignition control terminal of Multipurpose Check Connector and chassis ground when DTC is set.

DTC Description

If the ignition control terminal of the Multipurpose Check Connector is grounded, the PCM determines that a fault exists and a DTC is stored.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Signal status is monitored

● Poor connection

● Open or short in control circuit

● Faulty PCM

Enable Conditions

● Ignition switch "ON"

Threshold value

● Grounding status "ON"

Diagnosis Time

● Continuous

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