Diagnostic System Check

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Connect scan tool to Data Link Connector (DLC) located under steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to SCAN TOOL DOES NOT POWER UP under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
Turn ignition on. Attempt to establish communication with the Left Door Control Module (LDCM), Right Door Control Module (RDCM), Seat Control Module (SCM), Body Control Module (BCM) and Powertrain Control Module (PCM). If scan tool communicates with all systems, go to next step. If scan tool does not communicate with all systems, go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
Using scan tool, retrieve DTCs from modules listed in step 2 . If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, diagnose by symptom.
If scan tool displays any DTCs which begin with "U", go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article. If scan tool does not display any DTCs that begin with "U", go to next step.
If DTC B0605 is not set, go to next step. If DTC B0605 is set, go to BODY CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
If DTC P0562 or P0563 are set, go to appropriate powertrain On-Board Diagnostic (OBD) system check in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If DTC P0562 or P0563 are not set, perform appropriate test under DIAGNOSTIC TESTS. See MEMORY SYSTEM DIAGNOSTIC TROUBLE CODES (DTCs) table.

MEMORY SYSTEM DIAGNOSTIC TROUBLE CODES (DTCs)

DTC⁽¹⁾

Description

B0846

Battery 2 Out Of Range (SCM)

B0851

Battery 1 Out Of Range (SCM)

B0856

5-Volt Reference Out Of Range (SCM)

B2242

Memory No. 1 Switch Fault (LDCM)

B2244

Memory No. 2 Switch Fault (LDCM)

B2262

Mirror Horizontal Position Sensor Fault (LDCM)

B2263

Mirror Horizontal Position Sensor Fault (RDCM)

B2264

Mirror Vertical Position Sensor Fault (LDCM)

B2265

Mirror Vertical Position Sensor Fault (RDCM)

B2605

Seat Front Vertical Position Sensor Failure (SCM)

B2606

Seat Rear Vertical Position Sensor Failure (SCM)

B2607

Seat Horizontal Position Sensor Failure (SCM)

B2860

Column Position Sensor Failure (SCM)

⁽¹⁾	For additional DTC testing procedures not listed, see SELF-DIAGNOSTIC SYSTEM in appropriate POWER SEATS , POWER MIRRORS or STEERING COLUMN SWITCHES article.