DTC B2585 or B3867
Diagnostic Instructions
DTC Descriptors
| DTC B2585 01: Left Park Lamps Control Circuit
Short to Battery |
| DTC B2585 02: Left Park Lamps Control Circuit
Short to Ground |
| DTC B3867 02: Right Park Lamp Control Circuit
Short to Ground |
| DTC B3867 04: Right Park Lamp Control Circuit
Open |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Left Park Lamps Control
|
B2585 02
|
1
|
B2585 01
|
-
|
Right Park Lamps Control
|
B3867 02
|
B3867 04
|
1
|
-
|
1. Park Lamps Inoperative
|
|
| |
Circuit/System Description
The body control module (BCM) energizes the park lamps by
applying voltage to the park lamp control circuit. When the park
lamp control circuit is energized the park lamps are
illuminated.
Conditions for Running the DTC
B2585 01
Headlamp switch in OFF position.
B2585 02
Headlamp switch in park or low beam position.
B3867 02
Headlamp switch in park or low beam position.
B3867 04
Headlamp switch in park or low beam position.
Conditions for Setting the DTC
B2585 01
The BCM detects a short to voltage on the control circuit.
B2585 02 or B3867 02
The BCM detects a short to ground on the control circuit.
B3867 04
The BCM detects an open/high resistance on the control circuit.
Conditions for Clearing the DTC
The condition for setting the DTC is no longer present.
Reference Information
Schematic Reference
Exterior Lights Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, perform the appropriate Front Lamp test. The
appropriate park lamp should be ON/OFF when changing between the
commanded states .
Circuit/System Testing
Park Lamps Inoperative
| 1. |
Ignition OFF, disconnect the
harness connector at the appropriate park lamp. |
| 2. |
Disconnect the negative
terminal of the C1 Battery. |
| 3. |
Test for less than 5 Ω
between the appropriate turn signal lamp ground circuit harness
connector listed below and ground: |
| |
• |
E13L Headlamp - Left harness
connector terminal 1 |
| |
• |
E42L Tail Lamp Assembly - Left
harness connector terminal B |
| |
• |
E43L Liftgate Tail Lamp
Assembly - Left harness connector terminal 3 |
| |
• |
E13R Headlamp - Right ground
connector terminal 1 |
| |
• |
E42R Tail Lamp Assembly -
Right harness connector terminal C |
| |
• |
E43R Liftgate Tail Lamp
Assembly - Right harness connector terminal 2 |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 4. |
Reconnect the negative
terminal to the C1 Battery. |
| 5. |
Connect a test lamp between
the appropriate park lamp control circuit harness connector listed
below and ground: |
| |
• |
E13L Headlamp - Left harness
connector terminal 4 |
| |
• |
E42L Tail Lamp Assembly - Left
harness connector terminal A |
| |
• |
E43L Liftgate Tail Lamp
Assembly - Left harness connector terminal 2 |
| |
• |
E13R Headlamp - Right ground
connector terminal 4 |
| |
• |
E42R Tail Lamp Assembly -
Right harness connector terminal D |
| |
• |
E43R Liftgate Tail Lamp
Assembly - Right harness connector terminal 3 |
| 6. |
Ignition ON, command the
appropriate Park Lamp test ON and OFF with a scan tool. The test
lamp should turn ON and OFF when changing between the commanded
states. |
| ⇒ |
If the test lamp is always OFF, test the control
circuit for a short to ground. 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 or an open/high resistance. If the
circuit tests normal, replace the K9 Body Control Module. |
| 7. |
If all circuits test normal,
test or replace the appropriate inoperative park lamp. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
