2010 Cadillac CTS Sedan AWD V6-3.6L Page 69

2010 Cadillac CTS Sedan AWD V6-3.6L Page 69

Repair Instructions

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

* Active Hood Hinge Actuator Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist

Systems/Service and Repair/Removal and Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for pedestrian impact detection module

replacement, setup, and programming

B009B

DTC B009B

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 Descriptors

B009B 01

- Right Active Hood Hinge Actuator Deployment Loop Short to Battery

B009B 02

- Right Active Hood Hinge Actuator Deployment Loop Short to Ground

B009B 04

- Right Active Hood Hinge Actuator Deployment Loop Open

B009B 0D

- Right Active Hood Hinge Actuator Deployment Loop Above Threshold

B009B 0E

- Right Active Hood Hinge Actuator Deployment Loop Below Threshold

Diagnostic Fault Information

Circuit/System Description

The pedestrian hood actuators deploy only when a valid signal whose energy is capable of triggering deployment of the hood is present. The

pedestrian hood actuators only deploys in those events where the activation of the hood is expected. The hood actuator is not expected to deploy in

low severity event where the risk of injury is low or in a high severity event like car to car crash. During a frontal pedestrian impact of sufficient

force the pedestrian impact detection module will allow current to flow through the deployment loop in order to deploy the hood hinge actuator.

The pedestrian impact detection module performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity, shorts

to ground and shorts voltage. There are 2 shorting bars used within the hood hinge actuator connector which will short together both high and low

control circuits, when the hood hinge connector is disconnected. This helps to prevent unwanted deployment of the actuator during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B009B 01

The pedestrian impact detection module deployment loop resistance leakage is less than 3.5 k ohms for 2.5 seconds.