Diagnostic Aids

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The Misfire Current Cyl # / Misfire History Cyl # displays on the scan tool provides information that may be useful in Diagnosing Diagnostic Trouble Code (DTC) P1359. The Misfire Current Cyl # counter may normally display a small amount of activity, typically 0-10 counts. However, the display should not increment steadily. If the Misfire Current Cyl # increments steadily for a single cylinder within the IC circuit group, the condition is isolated to the IC circuit for the specific cylinder. If the Misfire Current Cyl # increments randomly within the IC circuit group, the condition may be due to poor connections at the PCM or a faulty PCM. If the Misfire Current Cyl # increments steadily for a cylinder bank, DTC P1360 may set. DTC P1360 may result from one of the following conditions:

A loss of power or ground at the module assembly for the cylinder bank.
A faulty or disconnected module assembly connector for the cylinder bank.
A faulty ignition control module.

If the condition is intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.