Door System Diagnostic System Check
- Connect scan tool to Data Link Connector (DLC). DLC is located on left side of instrument panel, near steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP
under SYSTEM TESTS.
- Turn ignition switch to RUN position. Attempt to establish communication with Body Control Module (BCM). If scan tool communicates with BCM, go to next step. If scan tool does not communicate with BCM, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE
under SYSTEM TESTS.
- Select DISPLAY DTCs function on scan tool for BCM. If any DTCs are retrieved, go to next step. If no DTCs are retrieved, diagnose and repair power door lock system by symptom.
- If communication DTCs (DTCs beginning with a "U") are not retrieved, go to next step. If any DTCs beginning with "U" are retrieved, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE
under SYSTEM TESTS.
- If DTC B1000 or B1001 are not retrieved, go to next step. If DTC B1000 or B1001 are retrieved, go to DTC B1000: BODY CONTROL MODULE MALFUNCTION
and/or DTC B1001: OPTION CONFIGURATION ERROR
under DIAGNOSTIC TESTS.
- If DTC B1372 or B1382 are not retrieved, go to next step. If DTC B1372 or B1382 are retrieved, go to DTC B1372: IGNITION 1 CIRCUIT LOW
and/or DTC B1382: IGNITION ACC CIRCUIT LOW
under DIAGNOSTIC TESTS.
- If no powertrain DTCs (DTCs beginning with "P") are retrieved, go to next step. If any DTCs beginning with "P" are retrieved, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS
.
- If DTC B3127, B3132, B3133, B3137, or B3138 are retrieved, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS
. If DTC B3127, B3132, B3133, B3137, or B3138 are not retrieved, diagnose and repair door system by symptom using appropriate article.