Chrysler PT Cruiser 2001 Service Manual Supplement page 2716

VERIFICATION TESTS
Verification Tests —
POWERTRAIN VERIFICATION TEST VER - 6
1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If the PCM was replaced, perform steps 3 through 5 then continue with the verification.
Otherwise, skip those steps and continue.
3. If PCM has been changed and correct VIN and mileage have not been programmed, a DTC
will be set in ABS and Air bag modules. In addition, if vehicle is equipped with a Sentry Key
Immobilizer Module (SKIM), Secret Key data must be updated to enable start.
4. For ABS and Airbag Systems: Enter correct VIN and Mileage in PCM. Erase codes in ABS
and Airbag modules.
5. For SKIM theft alarm: Connect DRB to data link conn. Go to Theft Alarm, SKIM, Misc. and
place SKIM in secured access mode, by using the appropriate PIN code for this vehicle. Select
Update the Secret Key data. Data will be transferred from SKIM to PCM.
6. If any existing diagnostic trouble codes are not repaired, go to symptom list and follow 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 DRBIII.
7. The LDP Monitor Test Mode has been added to the DRBIII 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.
8. LDP Monitor Test Mode is a useful way to run a total system performance test. Use this test
to verify any type of LDP system repair.
9. Software program makes temporary changes to operating mode of PCM. For this reason, it
is critical that test not be interrupted. PCM's left in this mode as result of interrupted test will
illuminate the MIL for 8-10 mi of driving with no DTC's stored.
10. Erasing DTC's will not change this condition.
11. If a vehicle is found to be stuck in the mode described above, the LDP Dealer Test should
be re-run in its entirety so that the software program in the DRBIII can restore the PCM
operating mode.
12. Note similarity to LDP Monitor screen found under OBDII Monitors. Failure modes are
fewer in this System Test than OBDII LDP Monitor. System Test only stores Small Leak DTC
to indicate problem with system. No other type of failure mode indication given.
13. 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.
14. Connect the DRB to the data link connector. Engine running, turn off all accessories.
15. Note: While test is being performed, PCM must see RPM, minimum MAP, No Vehicle speed
and minimum Throttle Position sensor (At idle, in park.) With DRBIII in System Tests, perform
the LDP Monitor Test and follow the instructions on the screen.
16. If the LDP Monitor Test failed and a Small Leak DTC has set, the repair is not complete.
Check for any related Technical Service Bulletins and return to Symptom List.
17. If any other trouble code has set, return to Symptom List and follow the path specified for
that trouble code. If the LDP Monitor Test passed, the repair was successful and testing is now
complete.
Continued
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APPLICABILITY
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