DTC B3883
Diagnostic Instructions
DTC Descriptors
| DTC B3883 02: License Plate Lamp Circuit Short
to Ground |
| DTC B3883 04: License Plate Lamp Circuit
Open |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
License Plate Lamp Control
|
B3883 02
|
B3883 04
|
1
|
-
|
1. License plate lamps always ON
|
|
| |
Circuit/System Description
The headlamp switch is supplied with ground at all times. When
the headlamp switch is placed in either the park or low beam
position, ground is applied to the license plate lamp signal
circuit to the body control module (BCM). The BCM responds by
applying battery voltage to the license plate lamp control circuit.
This energizes the left and right license lamp.
Conditions for Running the DTC
Headlamp switch in park or low beam position
Conditions for Setting the DTC
B3883 02
The BCM detects a short to ground on the control circuit.
B3883 04
The BCM detects an open control circuit.
Action Taken When the DTC Sets
The appropriate license plate lamp is inoperative.
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 License Plate Lamps test. The license
plate lamps should be ON/OFF.
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
appropriate harness connector at the license plate lamps listed
below: |
| |
• |
E7L License Plate Lamp -
Left |
| |
• |
E7R License Plate Lamp -
Right |
| 2. |
Test for less than 5 Ω
between the appropriate license plate lamp ground circuit harness
connector terminal 2 and ground. |
| ⇒ |
If greater than the specified value, test the
ground circuit for an open/high resistance. |
| 3. |
Connect a test lamp between
the appropriate control circuit harness connector terminal 1 and
ground. |
| 4. |
Command the License Plate
Lamps test with a scan tool. The test lamp should turn ON and OFF
when changing between the commanded states. |
| ⇒ |
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. |
| ⇒ |
If the test lamp is always OFF, test the control
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K9 Body Control Module. |
| 5. |
If all circuits test normal,
test or replace the appropriate license plate lamp. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
