Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC P1649 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
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. Refer to the appropriate DTC.

If the DTC is set, perform the Immobilizer Relearn procedure. Refer to Immobilizer System Component Programming . If the DTC resets, replace the K20 Engine Control Module (ECM).

scientia non olet · About Mike's Workshop Manuals