Powertrain Verification Test - Ver 6A

VERIFICATION TEST VER-6A

Applicability - 3.9L V-6
5.2L V-8
5.9L V-8 Light/Heavy Duty
8.0L V-10 Medium/Heavy Duty

1. If PCM has been changed and correct VIN and mileage have not been programmed, a DTC will be set in ABS and Airbag modules.

2. For ABS and Air Bag Systems: Enter correct VIN and Mileage in PCM. Erase codes in ABS and Airbag modules.

3. Inspect the vehicle to ensure that all engine components are connected. Reassemble and reconnect components as necessary.

4. If there are any existing diagnostic trouble codes not repaired, perform Symptom List and follow the path specified. After all diagnostic trouble codes have been repaired, return to TEST VER-6A and run LDP Dealer Test Mode under Systems Test in DRB III.

5. A DRB software program was written which allows the PCM to run the LDP Monitor as part of this test. Test failures will be indicated through a stored DTC.

6. The LDP Monitor Test is a useful way to run a total system performance test. Use this test to verify any type of LDP system repair.

7. Note the similarity to the LDP Monitor screen found under OBD II Monitors. Failure modes are fewer in this System Test than in the OBD II LDP Monitor. The System Test will only store the Small Leak DTC to indicate a problem with the system.

8. With the DRB, No other type of failure mode indication is given. The System Test failure may have been, for example, due to a large leak, but the PCM will set the Small Leak DTC to indicate failures that occurred as part of the system test.

9. Connect the DRB III to the Data Link Connector. Turn off all accessories.

NOTE: For this test to be valid, the engine must remain at idle, in park and no throttle pedal input during the entire test.

10. With the DRB III in LDP Monitor Test follow the instructions on the screen.

11. If the small Leak DTC trouble code has set, the repair is not complete. Check for any related Technical Service Bulletins and return to Symptom List.

12. If any other trouble code has set, return to Symptom List and follow the path specified for that trouble code. If there are no trouble codes, the repair was successful and is now complete.