2010 Cadillac CTS Sedan AWD V6-3.6L Page 67
* 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
B009A 01
- Left Active Hood Hinge Actuator Deployment Loop Short to Battery
B009A 02
- Left Active Hood Hinge Actuator Deployment Loop Short to Ground
B009A 04
- Left Active Hood Hinge Actuator Deployment Loop Open
B009A 0D
- Left Active Hood Hinge Actuator Deployment Loop Above Threshold
B009A 0E
- Left 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 a 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 to 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
B009A 01
The pedestrian impact detection module deployment loop resistance leakage is less than 3.5 k ohms for 2.5 seconds.
B009A 02
The pedestrian impact detection module deployment loop resistance leakage is less than 3.5 k ohms for 2.5 seconds.
B009A 04
The pedestrian impact detection module deployment loop resistance is greater than 7.2 ohms for 2.5 seconds.
B009A 0D
The pedestrian impact detection module deployment loop resistance is greater than 3.1 ohms for 2.5 seconds.
B009A 0E
The pedestrian impact detection module deployment loop resistance is less than 1.6 ohms for 2.5 seconds.
