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Sunshade Illumination Malfunction

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.

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Sunshade Lamps B+

1, 2, 3

2

--

--

Sunshade Lamps Ground

--

2

--

--

1. Reading Lamps Always OFF.

2. Sunshade Lamps Always OFF.

3. Instrument Panel Compartment Lamp Always OFF.

Circuit/System Description

The body control module (BCM) supplies the dome/reading lamps, sunshade and instrument panel compartment lamp with battery voltage. When switching on the following components the concerning lamps will illuminate:

    • Dome/reading lamps
    • Sunshade - left front
    • Sunshade - right front
    • Instrument panel compartment lamp

Reference Information

Schematic Reference

Interior Lights Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Interior Lighting Systems 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

Circuit/System Verification

Ignition ON, observe the lamp of the sunshade - left front/sunshade - right front while opening and closing. The lamp should illuminate when opened.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the appropriate inoperative sunshade.
  2. Test for less than 5 Ω between the ground circuit terminal B and ground.
    3. ⇒If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, test for greater than 11 V between B+ circuit terminal A and the ground circuit terminal B.
    4. ⇒If less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
  4. If all circuits test normal, test or replace the appropriate inoperative sunshade.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Sunshade Replacement
    •  Sunshade Support Replacement
    • Control Module References for BCM replacement, setup, and programming
   


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