Diagnostic Aids

DTCs P0335 and P0340 will set with the ignition switch in the Start position if the starter motor is inoperative, or the starter motor control circuit is inoperative. When the ECM enables starter motor operation, the ECM also initiates the diagnostic test routines for DTCs P0335 and P0340. If a condition exists which prevents the engine from cranking, the ECM will not receive a signal input from the crankshaft position (CKP) and the CMP sensors.