vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

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DTC P062A > < DTC P0627-P0629

Astra J

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.

Circuit/System Description

Ignition voltage is supplied to the instrument cluster. The engine control module (ECM) turns the MIL ON by grounding the MIL control circuit.

Reference Information


Schematic Reference

Engine Controls Schematics


Connector End View Reference

Component Connector End Views


Electrical Information Reference


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTCs U0073 00, U0100 00, or U0155 00 are not set.
⇒ If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
2. Ignition ON, the MIL should turn ON and OFF when commanded with a scan tool.

Circuit/System Testing

Ignition ON, verify that the P16 Instrument Cluster warning indicators are illuminated.

If the P16 Instrument Cluster warning indicators are not illuminated, test the P16 Instrument Cluster ignition circuit terminal 31 for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the P16 Instrument Cluster.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•  Control Module References for ECM replacement, setup, and programming

DTC P062A > < DTC P0627-P0629