2010 Cadillac Truck SRX AWD V6-3.0L Page 309

2010 Cadillac Truck SRX AWD V6-3.0L Page 309

DTC B260B 02

- Left Daytime Running Lamp Relay Control Circuit Short to Ground

DTC B260B 04

- Left Daytime Running Lamp Relay Control Circuit Open

DTC B260C 01

- Right Daytime Running Lamp Relay Control Circuit Short to Battery

DTC B260C 02

- Right Daytime Running Lamp Relay Control Circuit Short to Ground

DTC B260C 04

- Right Daytime Running Lamp Relay Control Circuit Open

Diagnostic Fault Information

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 tail lamp signal circuit to the body control module (BCM). The BCM responds by applying battery voltage to the left/right park

lamps, left/right side marker lamps and left/right tail lamps. This energizes the appropriate lamp.

Conditions for Running the DTC

* The engine is running.

* Headlamp switch in AUTO position.

* The ambient light is day.

Conditions for Setting the DTC

B260B 01 or B260C 01

The BCM detects a short to voltage on the daytime running lamp relay control circuit.

B260B 02 or B260C 02

The BCM detects a short to ground on the daytime running lamp relay control circuit.

B260B 04 or B260C 04

The BCM detects an open/high resistance on the daytime running lamp relay control circuit.

Action Taken When the DTC Sets

B260B 01 or B260C 01

The appropriate daytime running lamp will be continuously illuminated.

B260B 02, B260C 04, B260B 02 or B260C 04

The appropriate daytime running lamp will be inoperative.

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.