Reading Lamps Malfunction
Diagnostic Instructions
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Reading Lamps B+
|
1, 2, 3
|
1
|
-
|
-
|
Reading Lamps Ground Terminal 6
|
-
|
1
|
1
|
-
|
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 -
row |
| • |
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
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, switch the dome/reading lamps or dome/reading lamps
- 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. |
| 2. |
Disconnect the negative
terminal of the C1 Battery. |
| 3. |
Test for less than 5 Ω
between the ground circuit terminal 6 and ground. |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 4. |
Reconnect the negative
terminal of the C1 Battery. |
| 5. |
Ignition ON, test for greater
than 11 V between the 12 V circuit terminal 1 and the ground
circuit terminal 6. |
| ⇒ |
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. |
| 6. |
If all circuits test normal,
test or replace the E37A Dome/Reading Lamps or E37B Dome/Reading
Lamps - 2nd Row. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
