2010 Cadillac Truck SRX FWD V6-3.0L Page 349

2010 Cadillac Truck SRX FWD V6-3.0L Page 349

1. Ignition OFF, disconnect the RR CLOSURE relay.

2. Connect a test lamp between the control circuit terminal 85 and ground.

3. Ignition ON, command the Endgate Unlatch with a scan tool. The test lamp should turn ON when commanding the UNLATCH state.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K9 BCM.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.

4. If all circuits test normal, test or replace the RR CLOSURE relay.

Component Testing

1. Ignition OFF, disconnect the RR CLOSURE relay.

2. Test for 60-200 ohm between terminals 85 and 86.

瀚慖f not within the specified range, replace the RR CLOSURE 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 RR CLOSURE relay.

4. Install a 3A fused jumper wire between relay terminal 85 and 12V. Install a jumper wire between relay terminal 86 and ground. Test for less

than 2 ohm between terminals 30 and 87.

瀚慖f greater than the specified range, replace the RR CLOSURE 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 BCM replacement, setup and programming

B364A

DTC B364A

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 B364A 00

- Surveillance Mode Switch Circuit Malfunction

Diagnostic Fault Information

Circuit/System Description

The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing

the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay