Verification Test VER-6A

VERIFICATION TEST VER-6A

Applicability - All

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

2. The LDP Dealer Test Mode has been added to the DRB III to verify repairs to the LDP System. A DRB software program was written which causes the PCM to run the LDP Monitor as part of this test. Test failures will be indicated through a stored DTC.

3. Dealer Test Mode is a useful way to run a total system performance test. Use this test to verify any type of LDP system repair.

4. The software program makes temporary changes to the operating mode of the PCM. For this reason, it is CRITICAL that the test not be interrupted.

5. PCM's left in this mode as the result of an interrupted test will illuminate the MIL for 8 - 10 minutes of driving with no DTC's stored. Erasing DTC's will not change this condition.

6. If a vehicle is found to be stuck in the mode described above, the LDP Dealer Test should be rerun in its entirety so that the software program in the DRB III can restore the PCM operating mode.

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. 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.

10. Turn off all accessories.

11. With the DRB III in LDP Dealer Test Mode, follow the instructions on the screen.