Service Information

Captiva

Malfunction Indicator Lamp (MIL) Diagnosis

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Ignition 1 voltage is supplied directly to the malfunction indicator lamp (MIL). The engine control module (ECM) turns the MIL ON by sending a request to the instrument panel cluster (IPC) via the CAN communication circuit. The MIL should be on steady with the ignition ON and the engine OFF. When the engine is started, the MIL should turn OFF.

Reference Information

Schematic Reference

•	Instrument Cluster Schematics

•	Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information.

Circuit/System Verification

Ignition ON, verify that there are no diagnostic trouble codes (DTCs) set.

⇒	If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

Engine running, command the MIL ON and OFF with a scan tool. The MIL should respond to the scan tool commands.

⇒	If the MIL does not respond properly, replace the instrument panel cluster.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for instrument panel cluster replacement, setup, and programming