2010 Cadillac Truck SRX FWD V6-3.0L Page 319

2010 Cadillac Truck SRX FWD V6-3.0L Page 319

Relay Test

1. Ignition OFF, disconnect the KR5 rear defogger relay.

2. Test for 60-180 ohm between terminals 85 and 86.

瀚慖f not within the specified range, replace the KR5 rear defogger relay.

3. Test for infinite resistance between the following terminals:

* 30 and 86

* 30 and 87

* 30 and 85

* 85 and 87

瀚慖f not the specified value, replace the KR5 rear defogger relay.

4. Install a 25A fused jumper wire between relay terminal 86 and 12V. Install a jumper wire between relay terminal 85 and ground. Test for less

than 2 ohm between terminals 30 and 87.

瀚慖f greater than the specified range, replace the KR5 rear defogger relay.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay

Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power

Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))

* Control Module References (See: Testing and Inspection/Programming and Relearning) for HVAC control module replacement, setup and

programming

B291A

DTC B291A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B291A 39

- Content Theft Deterrent Assembly Internal Malfunction

Circuit/System Description

The content theft deterrent intrusion/inclination sensor performers an internal self-check to determine it is functioning properly.

Conditions for Running the DTC

* The ignition is OFF.

* The vehicle is in Park.

Conditions for Setting the DTC

The body control module (BCM) detects an internal failure within the content theft deterrent intrusion/inclination sensor.

Action Taken When the DTC Sets

The intrusion and inclination output is disabled.

Conditions for Clearing the DTC

* A current DTC is cleared when the conditions for setting the DTC are no longer present.