DTC B2615 02: Passenger Compartment Dimming 2
Circuit Short to Ground
Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Courtesy Lamps Control
B2615 02
2
1
-
1. Courtesy Lamps Always Illuminated
2. Courtesy Lamps do Not Illuminate
Circuit/System Description
Battery voltage for the courtesy lamps is supplied at all times
to the body control module (BCM). When the BCM receives a signal to
command the courtesy lamps ON, it then applies voltage through the
courtesy lamps control circuits to the courtesy lamps listed
below.
•
Dome/Reading lamps - front
overhead console
•
Dome/Reading lamps -
front
•
Dome/reading lamps -
middle
Conditions for Running the DTC
The BCM attempts to illuminate the courtesy lamps.
Conditions for Setting the DTC
The BCM detects a short to ground on the courtesy lamp control
circuit.
Action Taken When the DTC Sets
The BCM will not attempt to activate courtesy lamps.
Conditions for Clearing the DTC
•
The condition responsible for
setting the DTC no longer exists.
•
A history DTC will clear once
100 consecutive malfunction ignition cycles have occurred.
Command the Courtesy Lamps test ON and OFF with a scan tool. The
courtesy lamps should turn ON and OFF when changing between the
commanded states.
Circuit/System Testing
1.
Ignition OFF, disconnect the
harness connectors at the appropriate inoperative component.
2.
Disconnect the negative
terminal of the C1 Battery.
3.
Test for less than 5 Ω
between the ground circuit terminal 6 of the component 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.
Connect a test lamp between
the control circuit terminal 2 and ground.
6.
Command the Courtesy Lamps ON
and OFF with a scan tool.
⇒
If the test lamp is always OFF, test the control
circuit for a short to ground or open/high resistance. If the
circuit tests normal, replace the K9 Body Control Module.
⇒
If the test lamp is always ON, test the control
circuit for a short to voltage. If the circuit tests normal,
replace the K9 Body Control Module.
7.
If all circuit test normal,
test or replace the appropriate inoperative component.
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