Diagnostic Aids

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

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

Ignition system DTCs set with the ignition in the START position if the starter relay or the starter is inoperative. When the PCM enables starter operation, the PCM also initiates the diagnostic test routines for DTCs P0335, P0340, and P0385. The PCM will not receive signal input from the CKP and CMP sensors if a condition exists which prevents the engine from cranking. When this occurs, the DTCs will set.

If DTC P0615 is set, diagnose DTC P0615 first. See appropriate STARTERS article in ELECTRICAL. If DTC P0335, P0340, and/or P0385 are set and no trouble is found, check for the following conditions:

Is there a no-crank condition or an intermittent no-crank condition?
Was an attempt made to crank the engine with the shift lever not in Park/Neutral?