Circuit/System Verification

NOTE:

DTC P0633 will clear upon a successful engine start. Any malfunction that will cause a no-start condition will prevent DTC P0633 from clearing. Prior to diagnosing DTC P0633, ensure that all power moding and engine control systems are operating properly and all conditions that may cause a no-start have been corrected.

Verify there are no immobilizer DTCs set in the BCM.
- If any immobilizer DTCs are set in the BCM
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no immobilizer DTCs are set in the BCM
Perform the ECM immobilizer learn using the Engine Control Module IMMO Learn in SPS. Refer to Immobilizer System Component Programming (without BTM) , Immobilizer System Component Programming (with BTM) .
Verify the engine starts after the ECM completes the learn procedure.
- If the engine does not start
  Replace the K20 engine control module.
- If the engine starts
All OK