B3883
DTC B3883
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC B3883 01
- License Plate Lamp Circuit Short to Battery
DTC B3883 02
- License Plate Lamp Circuit Short to Ground
DTC B3883 04
- License Plate Lamp Circuit Open
Diagnostic Fault Information
Circuit/System Description
When the headlamp switch is placed in either the HEAD or PARK position, ground is applied to the park lamp signal circuit to the body control module (BCM). The BCM responds by applying voltage to the park lamps, tail lamps, and license lamps control circuits illuminating the park, tail, side marker, and license lamps.
Conditions for Running the DTC
Battery voltage must be between 9-16 V.
DTC B3883 01
Headlamp switch in OFF position.
DTC B3883 02 or B3883 04
Headlamp switch in PARK or ON positions.
Conditions for Setting the DTC
DTC B3883 01
* The BCM detects a short to voltage in the license lamps control circuit.
* The BCM detects an open/high resistance in the license lamps ground circuit.
DTC B3883 02
The BCM detects a short to ground in the license lamps control circuit.
DTC B3883 04
* The BCM detects an open/high resistance in the license lamps control circuit.
* The BCM detects an open/high resistance in the license lamps ground circuit.
Actions Taken When the DTC Sets
DTC B3883 01
License lamps always ON.
DTC B3883 02 or B3883 04
License lamps inoperative.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Exterior Lights Schematics Exterior Lights Schematics
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly - Primary
Description and Operation
Exterior Lighting Systems Description and Operation Exterior Lighting Systems
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Testing
1. Ignition OFF, exterior lamps OFF, trunk latch latched, remove both E7 license plate lamp bulbs.
2. Test for less than 5 ohms between each ground circuit terminal 2 and ground.
• If 5 ohms or greater
1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 5 ohms
3. Connect a test lamp between the E7L license plate lamp - left control circuit terminal 1 and ground, ignition ON.
4. Verify the test lamp turns ON and OFF when commanding the License Plate Lamps ON and OFF with a scan tool.
• If the test lamp is always OFF
1. Ignition OFF, disconnect the X4 harness connector at the K9 body control module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohms in the control circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K9 body control module.
• If the test lamp is always ON
1. Ignition OFF, disconnect the X4 harness connector at the K9 body control module, ignition ON.
2. Test for less than 1 V between the control circuit terminal and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K9 body control module.
• If the test lamp turns ON and OFF
5. Ignition OFF.
6. Connect a test lamp between the E7R license plate lamp - right control circuit terminal 1 and ground, ignition ON.
7. Verify the test lamp turns ON and OFF when commanding the License Plate Lamps ON and OFF with a scan tool.
• If the test lamp is always OFF
1. Ignition OFF, disconnect the X4 harness connector at the K9 body control module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohms in the control circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If the test lamp turns ON and OFF
8. Test or replace the appropriate E7 license plate lamp bulb.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Rear License Plate Lamp Replacement Service and Repair
* Control Module References Control Module References for BCM replacement, programming, and setup