2010 Cadillac CTS Sedan AWD V6-3.6L Page 583
B3435 02
The headlamp control module detects a short to ground on any of the left motor control circuits.
B3435 39
The headlamp control module detects an internal electronic failure.
B3435 54
The headlamp control module detects an overheating condition on any of the left motor control circuits.
B3440 00
The headlamp control module detects a short to voltage or an open/high resistance on any of the right motor control circuits.
B3440 02
The headlamp control module detects a short to ground on any of the right motor control circuits.
B3440 39
The headlamp control module detects an internal electronic failure.
B3440 54
The headlamp control module detects an overheating condition on any of the right motor control circuits.
Actions Taken When the DTC Sets
* When DTC B3435 or DTC B3440 sets, the headlamp control module will attempt to return the lamps to a nominal position and disable all
requests to all headlamp actuators.
* The driver information center (DIC) will display AFL Lamps Need Service.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists and the ignition is cycled.
* A history DTC will clear once 50 consecutive malfunction-free cycles have occurred.
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)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate headlamp.
2. Remove the AFS 15 A fuse.
3. Ignition OFF, scan tool OFF, test for 10 ohm -25k ohm between each control circuit terminal listed below and ground.
