DTC B3415
Diagnostic Instructions
DTC Descriptors
| DTC B3415 01: Automatic Headlamp Leveling
Control Module Axle Sensor Supply Circuit Short to Battery |
| DTC B3415 02: Automatic Headlamp Leveling
Control Module Axle Sensor Supply Circuit Short to Ground |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Headlamp Leveling Sensor 5V Reference - Front
|
B3415 02
|
1
|
B3415 01
|
-
|
Headlamp Leveling Sensor 5V Reference - Rear
|
B3415 02
|
1
|
B3415 01
|
-
|
Headlamp Leveling Sensor Signal - Front
|
B3410 02
|
B3410 05
|
B3410 05
|
B3410 08
|
Headlamp Leveling Sensor Signal - Rear
|
B3420 02
|
B3420 05
|
B3420 05
|
B3420 08
|
Headlamp Leveling Sensor Low Reference - Front
|
-
|
1
|
-
|
-
|
Headlamp Leveling Sensor Low Reference - Rear
|
-
|
1
|
-
|
-
|
1. Headlamp leveling malfunction
|
|
| |
Circuit/System Description
The front and rear suspension position sensors provide the
headlamp control module with front and rear suspension position
information. Each sensor receives a 5 V reference, signal, and low
reference circuits from the headlamp control module. The sensors
are connected to the control arms at the front and rear suspension.
As the vehicle travels, the suspension compresses and rebounds
moving the suspension position sensor arms. This causes the signal
output of the sensors to change. The headlamp control module
compares the information from the front and rear suspension
position sensors and adjusts the headlamp leveling as needed.
Conditions for Running the DTC
| • |
Battery voltage must be
between 9-16 V. |
| • |
The ignition is in the ON or
RUN position. |
Conditions for Setting the DTC
B3415 01
The DTC will set when the headlamp control module detects no signal
and low voltage on the sensor signal line.
B3415 02
The DTC will set when the headlamp control module detects no signal
and high voltage on the sensor signal line.
Action Taken When the DTC Sets
| • |
The headlamp control module
disables the headlamp leveling system. |
| • |
Headlamp leveling inoperative
indication ON. |
| • |
Advanced front lighting system
fault indication ON. |
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer
exists.
Reference Information
Schematic Reference
Headlights/Daytime Running Lights (DRL) 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 Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the appropriate headlamp leveling
sensor. |
| 2. |
Disconnect the negative
terminal of the C1 Battery. |
| 3. |
Test for less than 5 Ω
between the low reference circuit terminal 1 and ground.
|
| ⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K28 Headlamp Leveling Control Module. |
| 4. |
Reconnect the negative
terminal to the C1 Battery. |
| 5. |
Ignition ON, test for 4.8-5.2
V between the 5 V reference circuit terminal 3 and ground.
|
| ⇒ |
If less than the specified range, test the 5 V
reference circuit for a short to ground or an open/high resistance.
If the circuit tests normal, replace the K28 Headlamp Leveling
Control Module. |
| ⇒ |
If greater than the specified range, test the 5 V
reference circuit for a short to voltage. If the circuit tests
normal, replace the K28 Headlamp Leveling Control Module. |
| 6. |
Ignition ON, test for 4.8-5.2
V between the signal circuit terminal 2 and ground. |
| ⇒ |
If less than the specified range, test the signal
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K28 Headlamp Leveling Control
Module. |
| ⇒ |
If greater than the specified range, test the
signal circuit for a short to voltage. If the circuit tests normal,
replace the K28 Headlamp Leveling Control Module. |
| 7. |
If all circuits test normal,
replace the appropriate headlamp leveling sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
