Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If any DTCs have not been diagnosed, perform appropriate test(s) listed under SELF-DIAGNOSTIC TESTS. See DTC MESSAGES & CODES table. If all DTCs have been diagnosed and repaired, go to next step.
NOTE:
Engine must remain at idle with shift lever in Park, and throttle at idle position when performing LDP dealer test. This test will only store a small leak DTC to indicate there is a problem with system. System failure may have been caused by a large leak, but PCM will only set small leak DTC to indicate that a failure occurred during test.
NOTE:
LDP DEALER TEST MODE is used when performing this test to verify repairs and check operation of leak detection pump system. When performing this test, operating mode of Powertrain Control Module (PCM) will be changed. It is critical that LDP dealer test mode not be interrupted. If LDP dealer test mode is interrupted, PCM will remain in changed mode. This will cause PCM to illuminate MIL for 8-10 miles of driving and no DTCs will be stored in PCM. Clearing DTCs from PCM will not change MIL operation. If a vehicle is found with PCM stuck in this changed mode, LDP dealer test should be performed in its entirety so proper PCM operating mode may be obtained.