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P0633-SKIM SECRET KEY NOT ENTERED
When Monitored and Set Condition:
When Monitored: While the key is on.
Set Condition: The SKIM secret key was not calibrated into the ECM.
IMPROPER IGNITION KEY IS BEING USED
SKIM NOT CALIBRATED PROPERLY
TEST ACTION APPLICABILITY
1 With the DRBIII
Are any SKIM DTC’s present?
2 Verify that the proper ignition key is in the ignition lock on the steering column.
Are the proper keys being used?
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
3 Using the DRBIII
With the DRBIII
Cycle the ignition switch from on to off to on.
Did the DTC reset?