Circuit/System Verification

NOTE: Because of normal system communications between the BCM and ECM, any immobilizer B-codes must be diagnosed prior to the diagnosis of P-codes.

Perform the ECM immobilizer learn using the Engine Control Module IMMO Learn in SPS. Refer to Immobilizer System Component Programming . The ECM should successfully complete the learn and the vehicle should start.

If the ECM does not complete the learn or vehicle starting remains disabled, replace the K20 Engine Control Module.