PRE-RELEASE
Reading Lamps Malfunction
| Reading Lamps Malfunction |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
has overviews of all diagnostic categories.
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| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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Reading Lamps B+
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1, 2, 3
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1
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-
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-
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Reading Lamps Ground Terminal 6
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-
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1
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-
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-
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1. Reading Lamps Always OFF
2. Sunshade Lamps Always OFF 3. Instrument Panel Compartment Lamp Always OFF |
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| 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:
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Dome/reading lamps
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Dome/reading lamps - 2nd row
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Sunshade left Front
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Sunshade right Front
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Instrument panel compartment lamp
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| 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
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for information on diagnostic tools
| Circuit/System Verification |
Ignition ON, switch the dome/reading lamps or dome/reading lamps - 2nd row ON and OFF while observing the lamp. The concerning reading lamp should illuminate when switched ON.
| Circuit/System Testing |
Reading Lamps Circuit Malfunction
| 1. |
Ignition OFF, disconnect the harness connector at the appropriate reading lamp.
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E37A Dome/Reading Lamps harness connector X8
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E37B Dome/Reading Lamps - 2nd Row harness connector X1
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| 2. |
Test for less than 5 Ω between the ground circuit terminal 6 and ground.
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| 3. |
If greater than the specified range, test the ground circuit for an open/high resistance.
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| 4. |
Ignition ON, test for greater than 11 V between the 12 V circuit terminal 1 and the ground circuit terminal 6.
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| 5. |
If less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
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| 6. |
If all circuits test normal, test or replace the inoperative reading lamp bulb or reading lamp.
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E37A Dome/Reading Lamps
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E37B Dome/Reading Lamps - 2nd Row
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Reading Lamp Replacement
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Reading Lamp Bulb Replacement
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Dome and Reading Lamp Replacement
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Control Module References
for information on BCM replacement, setup, and programming
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