2010 Cadillac CTS Sedan AWD V6-3.6L Page 72
Circuit/System Description
The pedestrian impact detection system senses and discriminates vehicle impacts and deploys the pedestrian hood hinge actuators in a timely
manner to protect vulnerable pedestrians. The discrimination sensor provides discrete force information to the pedestrian impact detection module.
The pedestrian impact detection module uses vehicle acceleration information from the safing sensor and force information from the discrimination
sensor to determine those events when the deployment of the hood hinge actuator is expected. The pedestrian impact detection module provides a
two wire current loop interface to the discrimination sensor. The pedestrian impact detection module also provides power and ground to the
discrimination sensor over two separate discrete circuits. The pedestrian impact detection module monitors the discrimination sensor for any system
malfunction and when a malfunction is detected, a DTC will be stored in non volatile memory.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B009C 01
The discrimination sensor voltage is greater than 3.2 V and the discrimination sensor voltage is not supplied by the pedestrian impact detection
module.
B009C 02
The discrimination sensor voltage is less than 3.5 V and the discrimination sensor voltage is supplied by the pedestrian impact detection module.
B009C 08
The discrimination sensor high and/or low circuit is open or no new data received. An open circuit indicates as no new data received.
B009C 39
The discrimination sensor sends an error message or invalid data to the pedestrian impact detection module.
B009C 3A
Invalid discrimination sensor ID data received by the pedestrian impact detection module
Action Taken When the DTC Sets
* The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System.
* The pedestrian impact detection module stores DTC in memory.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 40 malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Object Detection Description and Operation (UD7 with Display) (See: Accessories and Optional Equipment/Collision Avoidance and Parking
Assist Systems/Description and Operation/Object Detection Description and Operation (UD7 with Display))Object Detection Description and
Operation (UD7 Audio Only) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and
Operation/Object Detection Description and Operation (UD7 Audio Only))Object Detection Description and Operation (B3T) (See: Accessories
and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and Operation
(B3T))Object Detection Description and Operation (UVC) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Description and Operation/Object Detection Description and Operation (UVC))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
