2010 Cadillac Truck SRX AWD V6-3.0L Page 657

2010 Cadillac Truck SRX AWD V6-3.0L Page 657

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 5V 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.

* The headlamps are ON.

Conditions for Setting the DTC

B3410 01 or B3420 01

The headlamp leveling control module detects a short to battery on the sensor signal line.

B3410 06 or B3420 06

The headlamp leveling control module detects a short to ground or an open/high resistance on the sensor signal line.

Action Taken When the DTC Sets

* The headlamp control module disables the headlamp leveling system.

* The driver information center will display Service AFL Lamp message.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

Reference Information

Schematic Reference

Headlights/Daytime Running Lights (DRL) Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System

Diagram/Headlights/Daytime Running Lights (DRL) Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)