Object Detection System Cadillac CTS II

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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 hood actuators deploy only when a valid signal whose energy is capable of triggering deployment of the hood is present. 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 provides a minimum of 1.2 amps and a maximum of 1.95 amps of current for a minimum of 2 ms when an actuator deployment is commanded. The pedestrian impact detection module performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity. The pedestrian impact detection module sets this DTC in the current ignition cycle when a hood hinge actuator deployment has been commanded. After a deployment, the hood hinge actuators and the pedestrian impact detection module need to be replaced.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

1. The pedestrian impact detection module detects a frontal impact to warrant deployment of the hood hinge actuators.
2. The pedestrian impact detection module provides a minimum of 1.2 amps and a maximum of 1.95 amps of current for a minimum of 2 ms to command deployment of the hood hinge actuators

Action Taken When the DTC Sets

1. The pedestrian impact detection module commands the DIC to display Reset Hood See Owners Manual for the following two ignition cycles.
2. The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System at the third ignition cycle after the hood hinge actuators have been deployed until service is performed.

Conditions for Clearing the DTC

1. The condition responsible for setting the DTC no longer exists.
2. A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

Ignition ON, verify DTC B0099 is not set.

1. If DTC is set, replace the pedestrian impact detection module and the active hood hinge actuators.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Active Hood Hinge Actuator Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for pedestrian impact detection module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

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.

Ignition voltage is between 9-16 volts.

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.

1. The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System.
2. The pedestrian impact detection module stores DTC in memory.

1. The condition responsible for setting the DTC no longer exists.
2. A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the left active hood hinge actuator.
2. Ignition ON, test for less than 1 volt between the high control circuit terminal A and ground. If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the pedestrian impact detection module.
3. Test for less than 1 volt between the low control circuit terminal B and ground. If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the pedestrian impact detection module.
4. Ignition OFF, test for infinite resistance between the high control circuit terminal A and ground. If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the pedestrian impact detection module.
5. Test for infinite resistance between the low control circuit terminal B and ground. If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the pedestrian impact detection module.
6. Test for less then 1 ohm between the high control circuit terminal A and ground. If not within the specified range, test the circuit for an open/high resistance.
7. Test for less then 1 ohm between the low control circuit terminal B and ground. If not within the specified range, test the circuit for an open/high resistance.
8. If all circuits test normal, replace the left active hood hinge actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Active Hood Hinge Actuator Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for pedestrian impact detection module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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.

Ignition voltage is between 9-16 volts.

B009B 01

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

B009B 02

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

B009B 04

The pedestrian impact detection module deployment loop resistance is greater than 7.2 ohms for 2.5 seconds.

B009B 0D

The pedestrian impact detection module deployment loop resistance is greater than 3.1 ohms for 2.5 seconds.

B009B 0E

The pedestrian impact detection module deployment loop resistance is less than 1.6 ohms for 2.5 seconds.

1. The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System.
2. The pedestrian impact detection module stores DTC in memory.

1. The condition responsible for setting the DTC no longer exists.
2. A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the right active hood hinge actuator.
2. Ignition ON, test for less than 1 volt between the high control circuit terminal A and ground. If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the pedestrian impact detection module.
3. Test for less than 1 volt between the low control circuit terminal B and ground. If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the pedestrian impact detection module.
4. Ignition OFF, test for infinite resistance between the high control circuit terminal A and ground. If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the pedestrian impact detection module.
5. Test for infinite resistance between the low control circuit terminal B and ground. If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the pedestrian impact detection module.
6. Test for less then 1 ohm between the high control circuit terminal A and ground. If not within the specified range, test the circuit for an open/high resistance.
7. Test for less then 1 ohm between the low control circuit terminal B and ground. If not within the specified range, test the circuit for an open/high resistance.
8. If all circuits test normal, replace the right active hood hinge actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Active Hood Hinge Actuator Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for pedestrian impact detection module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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.

Ignition voltage is between 9-16 volts.

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

1. The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System.
2. The pedestrian impact detection module stores DTC in memory.

1. The condition responsible for setting the DTC no longer exists.
2. A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the front upper beam pedestrian impact detection sensor.
2. Ignition OFF, test for less than 5 ohms between the sensor ground circuit terminal 3 and ground. If greater than the specified value, test the circuit for a short to voltage and an open/high resistance. If the circuit tests normal, replace the pedestrian impact detection module.
3. Ignition ON, verify a test lamp illuminates between the sensor supply voltage circuit terminal 4 and ground. If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the pedestrian impact detection module.
4. Ignition OFF, disconnect the harness connector at the pedestrian impact detection module.
5. Test for infinite resistance between the sensor signal circuit terminal 2 and ground. If less than infinite resistance, test the circuit for a short to ground.
6. Ignition ON, test for less than 1 volt between the sensor signal circuit terminal 2 and ground. If greater than the specified value, test the circuit for a short to voltage.
7. Ignition ON, test for less than 1 volt between the sensor low reference circuit terminal 1 and ground. If greater than the specified value, test the circuit for a short to voltage.
8. Test for less than 1 ohm between the sensor low reference circuit terminal 1 and the pedestrian impact detection module terminal 40. If greater than the specified value, test the circuit for an open/high resistance.
9. Test for less than 1 ohm between the sensor signal circuit terminal 2 and the pedestrian impact detection module terminal 39. If greater than the specified value, test the circuit for an open/high resistance.
10. If all circuits test normal, replace the front upper beam pedestrian impact detection sensor.
11. With a scan tool, clear DTCs.
12. Verify DTC B009C is not set. If DTC is set, replace the pedestrian impact detection module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Pedestrian Impact Detection Sensor Replacement - Front Upper Beam»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for pedestrian impact detection module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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 safing sensor provides vehicle acceleration 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 safing sensor. The pedestrian impact detection module also provides power and ground to the safing sensor over the same two wire discrete interface. The pedestrian impact detection module monitors the safing sensor for any system malfunction and when a malfunction is detected, a DTC will be stored in non volatile memory.

Ignition voltage is between 9-16 volts.

B009D 01

The safing sensor voltage is greater than 3.2 V and the safing sensor voltage is not supplied by the pedestrian impact detection module.

B009D 02

The safing sensor voltage is less than 3.5 V and the safing sensor voltage is being supplied by the pedestrian impact detection module.

B009D 08

The safing sensor high and/or low circuit is open. An open circuit indicates no new data received.

B009D 39

The safing sensor sends an error message or invalid data to the pedestrian impact detection module.

B009D 3A

Invalid safing sensor ID data received by the pedestrian impact detection module

1. The pedestrian impact detection module commands the DIC to display Service Pedestrian Protection System.
2. The pedestrian impact detection module stores DTC in memory.

1. The condition responsible for setting the DTC no longer exists.
2. A history DTC will clear once 40 malfunction-free ignition cycles have occurred.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the rear upper beam sensor and the harness connector at the pedestrian impact detection module.
2. Test for infinite resistance between the sensor signal circuit terminal 1 and ground. If less than infinite resistance, test the circuit for a short to ground.
3. Ignition ON, test for less than 1 volt between the sensor signal circuit terminal 1 and ground. If greater than the specified range, test the circuit for a short to voltage.
4. Test for less than 1 volt between the sensor low reference circuit terminal 2 and ground. If greater than the specified range, test the circuit for a short to voltage.
5. Test for less than 1 ohm between the sensor low reference circuit terminal 2 and the pedestrian impact detection module terminal 31. If greater than the specified value, test the circuit for an open/high resistance. If the circuit tests normal, replace the rear upper beam sensor.
6. Test for less than 1 ohm between the sensor signal circuit terminal 1 and the pedestrian impact detection module terminal 30. If greater than the specified value, test the circuit for an open/high resistance. If the circuit tests normal, replace the rear upper beam sensor.
7. If all circuits test normal, replace the rear upper beam sensor.
8. With a scan tool, clear DTCs.
9. Verify DTC B009D is not set. If DTC is set, replace the pedestrian impact detection module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Pedestrian Impact Detection Sensor Replacement - Rear Upper Beam»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for pedestrian impact detection module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The rear object sensor control module supplies 8 volts to the object alarm sensors via the 8 volt reference circuit and provides ground via the low reference circuit. The rear object sensor control module triggers the sensors in a sequential loop. After each sensor transmits, the rear object sensor control module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts
3. Transmission in REVERSE

B0958 01, B0959 01, B0960 01, or B0961 01

Voltage seen on the object alarm sensor signal circuit is greater than 11.5 volts or the object alarm sensor is not grounded.

B0958 06, B0959 06, B0960 06, or B0961 06

Voltage seen on the object alarm sensor signal circuit is less than 0.5 volts.

B0958 08, B0959 08, B0960 08, or B0961 08

An invalid signal is received by the rear object sensor control module.

B0958 21, B0959 21, B0960 21, or B0961 21

The object alarm sensor determines no change in the position of an object while the vehicle is in motion.

B0958 3A, B0959 3A, B0960 3A, B0961 3A

The rear object sensor control module determines there is an incorrect sensor installed.

1. The parking assist system is disabled.
2. The rear object sensor control module commands the red indicator ON.
3. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Diagnostic Aids

Make sure the object alarm sensors located on the rear vehicle bumper are clear. Remove any snow, mud or ice that may be blocking the sensors.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Verify that DTC B1E3A is not set. If the DTC is set, refer to «DTC B1E3A»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) .
2. Verify that DTC B0958 3A, B0959 3A, B0960 3A, or B0961 3A is not set If DTC is set, replace the appropriate object alarm sensor.
3. Transmission in REVERSE, individually place a suitable object behind each sensor. Verify the appropriate scan tool Rear Region parameter is between Zone 1 and Zone 4.

Single Object Alarm Sensor DTC Set

1. Ignition OFF, disconnect the harness connector at the appropriate object alarm sensor.
2. Ignition OFF for 30 seconds, test for less than 20 ohms between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground. If greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module. If less than the specified range, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
4. Ignition OFF, remove the malfunctioning object alarm sensor and swap locations with another properly functioning object alarm sensor. Connect the harness connector at both sensors.
5. Ignition ON, verify DTC is set for the new location in which the malfunctioning object alarm sensor is installed. If the DTC does not set for the new location, test the signal circuit terminal 3 for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
6. If the DTC sets for the new location in which the malfunctioning object alarm sensor is installed, replace the appropriate object alarm sensor.

Multiple Object Alarm Sensor DTCs Set

1. Ignition OFF, disconnect the harness connector at each of the object alarm sensors.
2. Ignition OFF for 30 seconds, test for less than 20 ohms between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground. If greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module. If less than the specified range, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for Object Alarm Module replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The rear object sensor control module supplies 8 V to the object alarm sensors via the 8 V reference circuit and provides ground via the low reference circuit. The rear object sensor control module triggers the sensors in a sequential loop. After each sensor transmits, the rear object sensor control module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 V
3. Transmission in REVERSE

Voltage seen on the object alarm sensor signal circuit is greater than 11.5 V or the object alarm sensor is not grounded.

Voltage seen on the object alarm sensor signal circuit is less than 0.5 V.

An invalid signal is received by the rear object sensor control module.

The object alarm sensor determines no change in the position of an object while the vehicle is in motion.

The rear object sensor control module determines there is an incorrect sensor installed.

1. The parking assist system is disabled.
2. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC).

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Make sure the object alarm sensors located on the rear vehicle bumper are clear. Remove any snow, mud or ice that is blocking the sensors.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Verify that DTC B1405 is not set. If DTC is set, refer to «DTC B1405»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) .
2. Verify that DTC B0958 3A, B0959 3A, B0960 3A, or B0961 3A is not set. If DTC is set, replace the appropriate object alarm sensor.
3. Transmission in REVERSE, verify the parking assist system is enabled and one audible beep sounds.

Single Object Alarm Sensor DTC Set

1. Ignition OFF, disconnect the harness connector at the appropriate object alarm sensor.
2. Ignition OFF for 30 seconds, test for less than 20 ohms between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground. If greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module. If less than the specified range, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
4. Ignition OFF, remove the malfunctioning object alarm sensor and swap locations with another properly functioning object alarm sensor.
5. Connect the harness connector at both sensors.
6. Ignition ON, verify DTC is set for the new location in which the malfunctioning object alarm sensor is installed. If the DTC does not set for the new location, test the signal circuit terminal 3 for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
7. If the DTC sets for the new location in which the malfunctioning object alarm sensor is installed, replace the appropriate object alarm sensor.

Multiple Object Alarm Sensor DTCs Set

1. Ignition OFF, disconnect the harness connector at each of the object alarm sensors.
2. Ignition OFF for 30 seconds, test for less than 20 ohms between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground. If greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module. If less than the specified range, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The rear object sensor control module directly controls the parking assist indicators located in the rear parking assist display. The rear object sensor control module monitors the voltage supplied to the rear parking assist display to verify it is within operating range. The rear parking assist display consists of two amber and one red LED that indicate the distance of an object from the rear bumper. As objects become progressively closer to the bumper, the rear object sensor control module will illuminate the LEDs in a sequence: one amber LED, both amber LEDs, and lastly, both amber LEDs and the red LED.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts
3. Transmission in REVERSE

The rear object sensor control module detects that one of the three indicator control circuits or the supply voltage is shorted to ground.

1. Rear parking assist system is disabled.
2. The rear object sensor control module commands the red indicator ON.
3. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

Conditions for Clearing

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, command the Rear Red LED, Rear Yellow LED 1, and Rear Yellow LED 2 ON and OFF with a scan tool. The appropriate indicator should turn on and off as commanded.

1. Ignition OFF, disconnect the harness connector at the rear parking assist display.
2. Ignition ON, test for 10.0-12.5 V between the supply voltage circuit terminal A and ground. If less than the specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module. If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
3. Command the appropriate LED ON with a scan tool and test for 9.5-12.5 V between the appropriate control circuit listed below and ground: Amber 1 LED - terminal B Amber 2 LED - terminal C Red LED - terminal D If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module. If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
4. If all circuits test normal, test or replace the rear parking assist display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for Rear Object Sensor Control Module replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the rear object sensor control module performs a self-test to verify if a critical malfunction exists within the system. During the power-up mode, the rear object sensor control module checks for a valid calibration data set.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts

A valid calibration is not detected upon module power-up.

1. Rear parking assist system is disabled.
2. The rear object sensor control module commands the red indicator ON.
3. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1008 is not set.

1. If DTC is set, program the rear object sensor control module. If DTC resets, replace the rear object sensor control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Rear Object Sensor Control Module replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the rear object sensor control module receives the vehicle identification number (VIN) from the body control module (BCM). The rear object sensor control module will compare the VIN received to the VIN stored in memory.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts

The VIN stored in the rear object sensor control module does not match the received VIN.

1. Rear parking assist system is disabled.
2. The rear object sensor control module commands the red indicator ON.
3. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1015 is not set.

1. If DTC is set, program the rear object sensor control module. If DTC resets, replace the rear object sensor control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Rear Object Sensor Control Module replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the rear object sensor control module receives the vehicle identification number (VIN) from the body control module (BCM). The rear object sensor control module will compare the VIN received to the VIN stored in memory.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts

The VIN stored in the rear object sensor control module does not match the received VIN.

1. The parking assist system is disabled.
2. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC).

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1015 is not set.

1. If the DTC is set, program the rear object sensor control module. If the DTC resets, replace the rear object sensor control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Object Alarm Module replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The parking assist control module supplies 8 V to the object sensors via the 8 V reference circuit and provides ground via the low reference circuit. The parking assist control module triggers the sensors in a sequential loop. After each sensor transmits, the parking assist control module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.

1. Ignition ON
2. Transmission in REVERSE

B1405 02

The parking assist control module has detected the 8 V reference circuit is shorted to ground.

B1405 03

The parking assist control module has detected the 8 V reference circuit is less than 6.3 V.

B1405 07

The parking assist control module has detected the 8 V reference circuit is greater than 10.4 V.

1. The parking assist is disabled.
2. The driver information center displays SERVICE PARK ASSIST.

The condition for setting the DTC is no longer present.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, transmission in REVERSE, observe the scan tool Sensor Feed Voltage Output parameter. The reading should be between 6.3-10.4 V.

1. Ignition OFF, disconnect the harness connector at each of the object sensors.
2. Ignition ON, transmission in REVERSE, test for 6.3-10.4 V between the 8 V reference circuit terminal 1 at the rear object sensor harness connector and ground. If less than the specified range, test the 8 V reference circuit for a short to ground. If the circuit tests normal, replace the rear object alarm module. If greater than the specified range, test the 8 V reference circuit for a short to voltage. If the circuit tests normal, replace the rear object alarm module.
3. Install each object alarm sensor harness connector one at a time, checking DTCs after each sensor is connected. Verify DTC B1405 is not set as current. If the DTC is set, replace the object alarm sensor that was connected immediately before the DTC set.
4. If all circuits test normal, replace the rear object alarm module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for rear object alarm module replacement, setup and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The rear object sensor control module supplies 8 volts to the object alarm sensors via the 8 volt reference circuit and provides ground via the low reference circuit. The rear object sensor control module triggers the sensors in a sequential loop. After each sensor transmits, the rear object sensor control module uses the sensor ring received through the signal circuit to calculate the distance and position of an object.

1. DTC B1325 is not set
2. Ignition voltage is between 9-16 volts
3. Transmission in REVERSE

B1E3A 03

The object alarm module has detected the 8-volt reference circuit is less than 7.2 volts.

B1E3A 07

The object alarm module has detected the 8-volt reference circuit is greater than 9.2 volts.

1. Rear parking assist system is disabled.
2. The rear object sensor control module commands the red indicator ON.
3. The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC) and a chime will sound.

1. The DTC will transition to history when the fault is no longer present.
2. A history DTC will clear after 100 malfunction-free ignition cycles.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, transmission in REVERSE, verify that the scan tool Sensor Voltage Feed Output parameter is 7.2-9.2 volts.

1. Ignition OFF, disconnect the harness connector at each of the object alarm sensors.
2. Ignition ON, verify DTC B1E3A is not set as current. If DTC is set, test the 8 V reference circuit terminal 1 for a short to voltage, short to ground, or an open/high resistance. If circuit tests normal, replace the rear object sensor control module.
3. Install each sensor harness connector one at a time, checking DTCs after each sensor is connected. Verify DTC B1E3A is not set as current. If DTC is set, replace the object alarm sensor that was connected immediately before the DTC set.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for Rear Object Sensor Control Module replacement, setup, and programming.

Symptoms - Object Detection

Note. Review the system operation in order to familiarize yourself with the system functions. Refer to Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
3. Make sure the rear parking assist sensors located on the vehicle rear bumper are clear. Remove any snow, mud or ice that is blocking the sensors.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

1. «Parking Assist System Malfunction (Parking Assist Display)»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) or «Parking Assist System Malfunction (Audio Only)»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Parking Assist Indicator Malfunction»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
3. «Rear Vision Camera System Malfunction»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The parking assist system is designed to identify and notify the driver of an object in the vehicle's path when reversing at speeds of less than 8 km/h (5 mph). The distance and location of the object is determined by four object alarm sensors located in the rear bumper. The parking assist system will notify the driver using the rear parking assist display and an audible signal through the radio.

The scan tool Park Assist Disable History parameters are a list of the seven previous reasons the parking assist system was disabled. These parameters may help in the diagnosis of an intermittent concern or a customer concern which is the result of normal system operation. The following is a brief description of potential causes which may aid in diagnosis

1. Manual Disable - The parking assist system has been disabled by the vehicle operator through the DIC.
2. Hitch/Object Attached - The rear object sensor control module is detecting an object is attached to the vehicle. Common items such as a hitch receiver, trailer, object hanging out of endgate/rear compartment, or a bicycle rack may cause this concern. Additionally, damage to the rear of the vehicle or a misaligned sensor may cause this concern. If the vehicle is damaged in a manner that causes the sensor to detect the bumper itself, the rear object sensor control module will interpret this as an attached object and disable the system. Carefully inspect the bumper, bumper mounting surface, and sensor retainers before continuing with normal diagnosis. After the detected cause has been addressed the vehicle must be driven at speed greater than 40 km/h (25 mph).
3. Reverse Overspeed - The vehicle is traveling too fast in reverse at speeds greater than 8 km/h (5 mph).
4. Inhibit - The rear object sensor control module has lost or received invalid GMLAN signal(s).
5. Sensor Disturbance - An outside interference is causing sensor movement. Such interference may be caused by a heavy pounding, like that of a nearby jackhammer, or large changes in pressure, such as a large truck's air brakes.
6. Sensor Ring Time - If the sensor fails its own diagnostic initialization the object alarm module will set this error. After the detected cause has been addressed the vehicle must be driven at speed greater than 40 km/h (25 mph). The following is a list of reasons this cause might have set: One or more of the sensors may be blocked by snow, mud, ice, or other debris. This might happen after going through a car wash in cold weather. Silicone insulator surrounding sensor maybe missing, cut, or twisted. Improperly installed sensor, sensor maybe be crooked due to a tight wire harness. One or more of the sensors may be scratched or the paint maybe chipped. Excessive paint thickness on a sensor may cause an excessive sensor ring time. When replacing or refinishing a sensor, do not apply an excessive amount of paint or clear coat.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify the park assist system is enabled through the DIC. If the park assist system is manually disabled, enable the system. Refer to the vehicle owners manual for instructions on enabling the system.
2. Command each of the park assist indicator LEDs ON and OFF with a scan tool. Each of the LEDs should turn ON and OFF as commanded. If any of the LEDs do not turn ON and OFF, refer to «Parking Assist Indicator Malfunction»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) .
3. Transmission in REVERSE, verify the scan tool Park Assist System Status parameter is Enable. NOTE: After completing the next step the vehicle might need to be driven at speed greater than 40 km/h (25 mph). If not the specified value, refer to «Diagnostic Aids»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) and the scan tool Park Assist Disable History parameters to determine the cause of inhibit.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The parking assist system is designed to identify and notify the driver of an object in the vehicle's path when reversing at speeds of less than 8 km/h (5 mph). The distance and location of the object is determined by four object alarm sensors located in the rear bumper. The parking assist system will notify the driver using an audible signal through the radio speakers.

The scan tool Park Assist Disable History parameters are a list of the seven previous reasons the parking assist system was disabled. These parameters may help in the diagnosis of an intermittent concern or a customer concern which is the result of normal system operation. The following is a brief description of potential causes which may aid in diagnosis

1. Manual Disable - The parking assist system has been disabled by the vehicle operator through the DIC.
2. Hitch/Object Attached - The rear object sensor control module is detecting an object is attached to the vehicle. Common items such as a hitch receiver, trailer, object hanging out of rear compartment, or a bicycle rack may cause this concern. Additionally, damage to the rear of the vehicle or a misaligned sensor may cause this concern. If the vehicle is damaged in a manner that causes the sensor to detect the bumper itself, the rear object sensor control module will interpret this as an attached object and disable the system. Carefully inspect the bumper, bumper mounting surface, and sensor retainers before continuing with normal diagnosis. After the detected cause has been addressed the vehicle must be driven at speed greater than 40 km/h (25 mph).
3. Reverse Overspeed - The vehicle is traveling too fast in reverse at speeds greater than 8 km/h (5 mph).
4. Inhibit - The rear object sensor control module has lost or received invalid GMLAN signal(s).
5. Sensor Disturbance - An outside interference is causing sensor movement. Such interference may be caused by a heavy pounding, like that of a nearby jackhammer, or large changes in pressure, such as a large truck's air brakes.
6. Sensor Ring Time - If the sensor fails its own diagnostic initialization the rear object sensor control module will set this error. After the detected cause has been addressed the vehicle must be driven at speed greater than 40 km/h (25 mph). The following is a list of reasons this cause might have set: One or more of the sensors may be blocked by snow, mud, ice, or other debris. This might happen after going through a car wash in cold weather. Silicone insulator surrounding sensor maybe missing, cut, or twisted. Improperly installed sensor, sensor maybe be crooked due to a tight wire harness. One or more of the sensors may be scratched or the paint maybe chipped. Excessive paint thickness on a sensor may cause an excessive sensor ring time. When replacing or refinishing a sensor, do not apply an excessive amount of paint or clear coat.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify the park assist system is enabled through the DIC. If the park assist system is manually disabled, enable the system. Refer to the vehicle owners manual for instructions on enabling the system.
2. Transmission in REVERSE, verify one audible beep sounds and the scan tool Park Assist System Status parameter is Enable. NOTE: After completing the next step the vehicle might need to be driven at speed greater than 40 km/h (25 mph). If not the specified values, refer to «Diagnostic Aids»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) and the scan tool Park Assist Disable History parameters to determine the cause of inhibit.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The rear object sensor control module directly controls the parking assist indicators located in the rear parking assist display. The rear parking assist display consists of two amber and one red LED that indicate the distance of an object from the rear bumper. As objects become progressively closer to the bumper, the rear object sensor control module will illuminate the LEDs in a sequence: one amber LED, both amber LEDs, and lastly, both amber LEDs and the red LED. The LEDs are supplied voltage by the rear object sensor control module. Each LED is also discretely controlled by the rear object sensor control module.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, command the Rear Red LED, Rear Yellow LED 1, and Rear Yellow LED 2 ON and OFF with a scan tool. The appropriate indicator should turn on and off as commanded.

1. Ignition OFF, disconnect the harness connector at the rear parking assist display.
2. Ignition ON, test for 9.0 - 12.5 V between the supply voltage circuit terminal A and ground. If less than the specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module. If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
3. Command the appropriate LED ON with a scan tool and test for 10.5 - 12.5 V between the appropriate control circuit listed below and ground: Amber 1 LED - terminal B Amber 2 LED - terminal C Red LED - terminal D If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module. If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
4. If all circuits test normal, test or replace the rear parking assist display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for Rear Object Sensor Control Module replacement, setup, and programming

Pedestrian Impact Detection System Disabling and Enabling

There are several reasons for disabling the pedestrian impact detection system (PIDS), such as repairs to the system or servicing a component near or attached to a PIDS component. There are several ways to disable the PIDS depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the pedestrian impact detection system (PIDS).

Pedestrian Impact Detection System (PIDS) Service Precautions

The pedestrian impact detection system (PIDS) maintains a reserve energy supply. The PIDS reserve energy supply provides deployment power for the hood hinge actuators if the PIDS loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

General Service Instructions

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity

1. Do not expose the PIDS modules to temperatures above 65°C (150°F).
2. Verify the correct replacement part number. Do not substitute a component from a different vehicle.
3. Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the PIDS.

Discard any of the following components if it has been dropped from a height of 100 cm (3 feet) or greater

1. Pedestrian impact detection system module
2. Pedestrian impact detection system safing sensor
3. Pedestrian impact detection system discrimination sensor
4. Pedestrian impact detection system hood hinge actuators

Disabling Procedure - Pedestrian Impact Detection System (PIDS) Fuse

1. Place the ignition in the OFF position.
2. Locate and remove the fuse supplying power to the PIDS. Refer to «Object Detection Schematics»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) or «Electrical Center Identification Views»(/cadillac/cts/ii-2007-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views) .
3. Wait 1 minute before working on the system.

Enabling Procedure - Pedestrian Impact Detection System (PIDS) Fuse

1. Place the ignition in the OFF position.
2. Install the fuse supplying power to the PIDS. Refer to «Object Detection Schematics»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) or «Electrical Center Identification Views»(/cadillac/cts/ii-2007-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views) .
3. Turn the ignition switch to the ON position. The PIDS indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the PIDS warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .

Disabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection (Sedan,Wagon)»(/cadillac/cts/ii-2007-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection (Sedan,Wagon)»(/cadillac/cts/ii-2007-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The PIDS indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the PIDS warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the vehicle is running and the transmission is placed into REVERSE, a 12 V signal is sent to the rearview camera indicating that camera operation is requested. Ignition voltage and ground are supplied to the rearview camera. The rearview camera sends video information to the radio through a video signal + and a video signal - circuit. A grounded shielding also wraps the video signal circuits to reduce electronic interference which may degrade the video signal and cause a distorted or otherwise degraded image.

A poor video image can be caused by ice, snow, and mud buildup on the lens of the rearview camera. Extreme lighting conditions may also affect performance, such as operating in the dark or with bright sunlight shining on the camera. Extreme high or low temperatures can also affect the image quality.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UD7 with Display) or Object Detection Description and Operation (UD7 Audio Only) or Object Detection Description and Operation (B3T) or Object Detection Description and Operation (UVC)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

1. Inspect the rearview camera and verify there is no debris on the lens and that the bezel or bezel seal is not damaged. If debris is found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Vehicle running in PARK, verify the backup lamps are off. If the backup lamps are illuminated, refer to Rearview Camera System Always On in «Circuit/System Testing»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) .
3. Park brake ON, vehicle running and in REVERSE, verify a clear rear vision image is displayed on the radio. If a clear image is not displayed, refer to Rearview Camera System Does Not Display in «Circuit/System Testing»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system) .

Rearview Camera System Always On

1. Ignition OFF, disconnect the harness connector at the rearview camera.
2. Ignition ON, vehicle in PARK, verify a test lamp does not illuminate between the control circuit terminal 3 and ground. If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit test normal, refer to «Backup Lamps Malfunction»(/cadillac/cts/ii-2007-2014/remont/exterior-lights/#lighting-system) .
3. If all circuits test normal, test or replace the rearview camera.

Rearview Camera System Does Not Display

1. Ignition OFF, disconnect the harness connector at the rearview camera.
2. Test for less than 10 ohms between the ground circuit terminal 5 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 6 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Park brake applied, vehicle running, transmission in REVERSE, verify a test lamp illuminates between the control circuit terminal 3 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
5. Ignition OFF, disconnect the X4 harness connector at the radio.
6. Ignition ON, test for less than 1 V between the following signal circuit terminals at the rearview camera harness connector and ground: Signal (+) circuit terminal 1 Signal (-) circuit terminal 4 If greater than the specified range, test the signal circuit for a short to voltage.
7. Test for infinite resistance between the following circuit terminals at the rearview camera harness connector and ground: Signal (+) circuit terminal 1 Signal (-) circuit terminal 4 If not the specified value, test the circuit for a short to ground.
8. Test for less than 2 ohms between the signal (+) circuit terminal 1 at the rearview camera harness connector and the signal (+) circuit terminal 5 at the radio harness connector. If greater than the specified range, test the signal circuit for an open/high resistance.
9. Test for less than 2 ohms between the signal (-) circuit terminal 4 at the rearview camera harness connector and the signal (-) circuit terminal 15 at the radio harness connector. If greater than the specified range, test the signal circuit for an open/high resistance.
10. If all circuits test normal, test or replace the rearview camera.
11. Ignition ON, vehicle running, transmission in REVERSE, verify a clear rear vision image is displayed on the radio. If a clear rear vision image is not displayed, replace the radio.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rearview Camera Replacement (Wagon)»(/cadillac/cts/ii-2007-2014/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for radio replacement, setup, and programming

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Removal Procedure

1. Remove rear bumper fascia. Refer to «Rear Bumper Fascia Replacement (Wagon)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) or «Rear Bumper Fascia Replacement (Sedan)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) .
2. Disconnect electrical from the rear object sensor.
3. Lift the locking tabs on the housing and remove the rear object sensor.

Installation Procedure

1. Paint the rear object sensor. Refer to «Basecoat/Clearcoat Paint Systems»(/cadillac/cts/ii-2007-2014/remont/paintcoatings/#paint-and-coatings__basecoatclearcoat-paint-systems) .
2. Ensure the paint does not exceed 6 mils. Use a paint thickness gauge suitable for non-ferrous metals. Refer to «Paint Gauges»(/cadillac/cts/ii-2007-2014/remont/paintcoatings/#paint-and-coatings__paint-gauges) .
3. Insert the sensor into the housing.
4. Connect the electrical connector to the rear object sensor.
5. Install the rear bumper fascia. Refer to «Rear Bumper Fascia Replacement (Wagon)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) or «Rear Bumper Fascia Replacement (Sedan)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) .

Rear Object Sensor Housing Replacement

1. Remove the rear fascia. Refer to «Rear Bumper Fascia Replacement (Wagon)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) or «Rear Bumper Fascia Replacement (Sedan)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) .
2. Disconnect the sensor harness.
3. Remove the sensor from the sensor housing. The sensor housing must be painted if replaced. If reinstalled, painting will not be necessary.
4. Sand/grind sonic weld plastic residue from the fascia.
5. Apply structural adhesive epoxy, Lord Fusor™ 127EZ or equivalent, to fascia at mating surface.
6. Using the alignment tabs, install the sensor housing to the fascia.
7. Allow adhesive to cure according to manufacturer's directions.
8. Install the sensor to the sensor housing.
9. Connect the electrical harness.
10. Install the rear fascia. Refer to «Rear Bumper Fascia Replacement (Wagon)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) or «Rear Bumper Fascia Replacement (Sedan)»(/cadillac/cts/ii-2007-2014/remont/exterior-body-panels/#bumpers-and-fascia) .

Scheme 11

Accident With or Without Pedestrian Hood Actuator(s) Deployment- Component Inspections

After any collision, inspect the following components as indicated. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware, repair or replace the mounting points and mounting hardware as needed.

1. Bumper/Facia/Grille
2. Hinge/Hood Assembly
3. Sensors
4. Upper Bumper Beam/Lower Bumper Beam/Bumper Form.

Accident With Actuator(s) Deployment - Component Replacement and Inspections

After a collision involving hood hinge actuator deployment, replace the following components. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware, repair or replace the mounting points and mounting hardware as needed.

1. Sensors
2. Actuators
3. Front Bumper/Fascia/Grille
4. Hinge/Hood Assembly
5. Upper Bumper Beam/Lower Bumper Beam/Bumper Form

Sensor Replacement Guidelines

The PIDS sensor replacement policy requires replacing sensors in the area of accident damage. The area of accident damage is defined as the portion of the vehicle which is crushed, bent or damaged due to a collision. An example of this would be a moderate collision where the front of the vehicle impacts a tree.

1. Replace the sensors whether or not the actuators have deployed.
2. Replace the sensors even if the sensors appear to be undamaged.

Sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire insulation can cause improper operation of the PIDS. Do not try to determine whether the sensor is undamaged. Replace the sensor. Also, if you follow a Diagnostic Trouble Code (DTC) table and a malfunctioning sensor is indicated, replace the sensor.

Object Detection Description and Operation (UD7 with Display)

The parking assist system is designed to identify and notify the driver of an object in the vehicle's path when reversing at speeds less than 8 km/h (5 mph). The distance and location of the object is determined by four object alarm sensors located in the rear bumper. The parking assist system will notify the driver using the rear parking assist display and an audible signal through the chime master.

The parking assist system is made up of the following components

1. Rear object sensor control module
2. Object alarm sensors
3. Rear parking assist display

Rear Object Sensor Control Module

The rear object sensor control module provides an 8-volt reference and a low reference to the four object alarm sensors. The rear object sensor control module receives individual signals from each of the four sensors and determines the location and distance of an object based on these inputs. When an object is detected, the rear object sensor control module will illuminate the appropriate LED on the rear parking assist display and send a serial data message requesting an audible alert.

Object Alarm Sensor

The object alarm sensors are located in the rear bumper of the vehicle. The sensors are used to determine the distance between an object and the rear bumper. Each sensor emits an ultrasonic frequency which is reflected off an object located behind the vehicle. These reflections are received by the sensors. The time difference between when the frequency was emitted and when the reflection is received, known as sensor echo, is used to determine the distance to the object. The sensors report this information to the rear object sensor control module.

Rear Parking Assist Display

The rear parking assist display is located in the interior rear of the vehicle and is visible through the inside rearview mirror. The display contains three LEDs: two amber and one red. The rear object sensor control module controls these three LEDs as a visual indicator of how close the vehicle bumper is to an object. The rear object sensor control module supplies voltage to each of the LEDs and commands each LED on by supplying an individual ground.

Rear Parking Assist Operation

When the vehicle is first placed into reverse, the parking assist system performs a bulb check. During the bulb check, all three LEDs located in the rear parking assist display will illuminate for approximately two seconds to indicate that the system is working.

When backing up at speed less than 8 km/h (5 mph), the system is constantly monitoring for object of interest located behind the vehicle. The rear parking assist system can detect objects greater than 7.6 cm (3 in) wide and 25.4 cm (10 in) tall. The system cannot detect objects below the bumper or underneath the vehicle. If an object is detected, one of the following will occur

1. If the object is 1-2.5 m (40-96 in) away from the vehicle, the amber outside indicator will illuminate and a single chime will sound when the object is first detected.
2. If the object is 0.6-1.0 m (23-40 in) away from the vehicle, the amber outside and the amber middle indicators will illuminate.
3. If the object is 0.3-0.6 m (11-23 in) away from the vehicle, the amber outside, amber middle, and red outside indicators will illuminate and the chime sounds continuously.
4. If the object is less than 0.3 m (12 in) away from the vehicle, the amber outside, amber middle, and red outside indicators will flash and the chime sounds continuously.

If the parking assist system detects a malfunction, a DTC will be stored and the rear object sensor control module will send a serial data message to the instrument panel cluster (IPC) to display the SERVICE PARK ASSIST message on the driver information center (DIC). A chime will sound and the red LED on the rear parking assist display will be illuminated, as a notification to the driver that a malfunction exists and the system is disabled.

Rear Parking Assist System DIC Messages

SERVICE PARK ASSIST

The driver information center (DIC) displays SERVICE PARK ASSIST when the rear object sensor control module detects a malfunction in the parking assist system and the system is disabled. The DIC also displays SERVICE PARK ASSIST when a loss of communication occurs with the rear object sensor control module.

PARK ASSIST OFF

The PARK ASSIST OFF message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system. The red LED in the rear parking assist display will be illuminated to indicate that the system has been disabled. The rear object sensor control module requests the DIC display PARK ASSIST OFF when it detects one of the following conditions

1. The parking assist system is manually disabled using the driver information center (DIC).
2. The park brake is applied or not fully released.
3. An object is attached to the rear of the vehicle, such as a trailer, bicycle rack, trailer hitch receiver, or tow bar.
4. The object alarm sensors are covered by snow, mud, dirt, slush, or ice.
5. The vehicle bumper is damaged.
6. Excessive paint thickness on a replacement object alarm sensor.
7. The object alarm sensors are disrupted by vibrations, like those caused by a large nearby vehicle or from heavy equipment such as a jackhammer.

Object Detection Description and Operation (UD7 Audio Only)

The parking assist system is designed to identify and notify the driver of an object in the vehicle's path when reversing at speeds less than 8 km/h (5 mph). The distance and location of the object is determined by four object alarm sensors located in the rear bumper. The parking assist system will notify the driver using an audible signal through the radio speakers. The audible signal will vary depending on the distance the object is from the vehicle.

The parking assist system is made up of the following components

1. Rear object sensor control module
2. Object alarm sensors

Rear Object Sensor Control Module

The rear object sensor control module provides an 8-volt reference and a low reference to the four object alarm sensors. The rear object sensor control module receives individual signals from each of the four sensors and determines the location and distance of an object based on these inputs. When an object is detected, the rear object sensor control module will send a serial data message requesting an audible alert.

Object Alarm Sensor

The object alarm sensors are located in the rear bumper of the vehicle. The sensors are used to determine the distance between an object and the rear bumper. Each sensor emits an ultrasonic frequency which is reflected off an object located behind the vehicle. These reflections are received by the sensors. The time difference between when the frequency was emitted and when the reflection is received, known as sensor echo, is used to determine the distance to the object. The sensors report this information to the rear object sensor control module.

Rear Parking Assist Operation

When the vehicle is first placed into reverse, an audible beep will sound to indicate the system is working.

When backing up at speed less than 8 km/h (5 mph), the system is constantly monitoring for object of interest located behind the vehicle. The parking assist system can detect objects greater than 7.6 cm (3 in) wide and 25.4 cm (10 in) tall. The system cannot detect objects below the bumper or underneath the vehicle. If an object is detected within 2.5 m (8 ft) away from the rear bumper, there will be an audible beep out of the speakers. As the vehicle gets closer to an object, the time between the beeps becomes shorter. If the vehicle stops and there is an object within 2.5 m (8 ft) away from the rear bumper the beeping will stop after 5 seconds. When the distance between the object and the vehicle starts to decrease again the beeping will start again.

If the parking assist system detects a malfunction when the vehicle is placed into reverse there will be no audible beep and a DTC will be stored. The rear object sensor control module will send a serial data message to the instrument panel cluster (IPC) to display the SERVICE PARK ASSIST message on the driver information center (DIC).

SERVICE PARK ASSIST

The driver information center (DIC) displays SERVICE PARK ASSIST when the rear object sensor control module detects a malfunction in the parking assist system and the system is disabled. The DIC also displays SERVICE PARK ASSIST when a loss of communication occurs with the rear object sensor control module.

PARK ASSIST OFF

The PARK ASSIST OFF message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system. The rear object sensor control module requests the DIC display PARK ASSIST OFF when it detects one of the following conditions

1. The parking assist system is manually disabled using the driver information center (DIC).
2. An object is attached to the rear of the vehicle, such as a trailer, bicycle rack, trailer hitch receiver, or tow bar.
3. The object alarm sensors are covered by snow, mud, dirt, slush, or ice.
4. The vehicle bumper is damaged.
5. Excessive paint thickness on a replacement object alarm sensor.
6. The object alarm sensors are disrupted by vibrations, like those caused by a large nearby vehicle or from heavy equipment such as a jackhammer.

Pedestrian Impact Detection System Description and Operation

The pedestrian impact detection systems primary function is to provide supplemental protection to vulnerable road users involved in vehicle impacts. The pedestrian impact detection system is also known as the active pedestrian protection system. The pedestrian impact detection system is a functional system for raising the hood to provide sufficient vertical deformation space under the hood. In Europe and Japan an active pedestrian impact detection system is necessary for vehicles which do not provide the required deformation space under the hood. The pedestrian impact detection system includes the following components

1. Pedestrian Impact Detection Module
2. Discrimination Sensor (Front Upper Beam Sensor)
3. Safing Sensor (Rear Upper Beam Sensor)
4. Two Hood Hinge Actuators

The pedestrian impact detection system will sense and discriminate vulnerable road user impacts and deploy the hood hinge actuators in a timely manner to protect the pedestrian. The term "deployment" applies to the activation of the hood via the hood actuators. The pedestrian impact detection system is designed to sense and discriminate road user impacts (eg. pedestrian, cyclist) from other types of impacts in order to properly deploy the hood actuators. No actions or inputs are required from the driver or passenger to trigger this device. The pedestrian impact detection module uses the safing and discrimination sensor to get acceleration and force information needed for the deployment of the hood hinge actuators. The pedestrian impact detection module deploys the hood actuators using two deployment loops. The pedestrian impact detection system only operates at vehicles speeds between 27 km/h (16 mph) to 45 km/h (27 mph). The pedestrian impact detection module detects internal and interface faults and commands the Service Pedestrian Protection System message in the DIC to indicate a system fault.

After a deployment event, the vehicle operator is able to reset the hood to its normal driving position. After resetting the hood, the pedestrian impact detection system is not required to be fully functional. For full functionality, it is necessary to replace system component(s) at an approved service facility.

Safing Sensor

The safing sensor provides vehicle acceleration information to the pedestrian impact detection module. The safing sensor uses an independent electronic safing method acting through an independent logic circuit such that no single point failure can lead to an unwanted actuation of the hood. The pedestrian impact detection module provides a two wire current loop interface to the safing sensor. The pedestrian impact detection module also provides power and ground to the safing sensor over the same two wire discrete interface.

Discrimination Sensor

The discrimination sensor provides discrete force information to the pedestrian impact detection module. The pedestrian impact detection module uses measurable pedestrian impact data sent from the discrimination sensor to determine the severity of the impact. 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.

Hood Hinge Actuators

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 deploy 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 loops in order to deploy the hood hinge actuators. The pedestrian impact detection module also performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity, shorts to ground and shorts voltage. In order to prevent unwanted deployment of the actuator during service, the hood hinge actuator contains 2 shorting bars that will short both high and low circuit pins when disconnected. The pedestrian impact detection module only issues a deployment command when a valid safing signal or confirmation has been generated. No inadvertent deployments will occur in any deployment loop due to a single point fault.

Rearview Camera System Operation

The rearview camera system can help a driver determine how close an object is to the rear bumper within a predefined rearward field of view. The rearview camera system consists of a video camera located at the rear of the vehicle and the navigation radio display.

When the vehicle is running and the transmission is placed into REVERSE, a 12 volt signal is sent to the rearview camera by the body control module (BCM). This signal indicates to the camera that the vehicle is in reverse and image display is requested. The rearview camera receives ignition voltage and a constant ground to power the camera. Video signal + and video signal - circuits carry the video image from the rearview camera to the navigation radio. Additionally, the video signal circuits are shielded to prevent any interference which may lead to a loss of video signal resolution and a degraded video image. The shield is provided a ground path by the rearview camera.

The following conditions may cause a degraded rearview camera image

1. Ice, snow, or mud has built up on the rearview camera
2. Dark conditions
3. Extreme light conditions, such as glare from the sun or the headlights of another vehicle
4. Damage to the rear of the vehicle
5. Extreme high temperatures or extreme temperature changes

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Checking Aftermarket Accessories
• Repairs and Inspections Required After a Collision
• Electrical Center Identification Views
• Battery Negative Cable Disconnection and Connection (Sedan,Wagon)
• Backup Lamps Malfunction
• Front Bumper Fascia Replacement
• Fastener Caution
• Instrument Panel Compartment Replacement (Left Hand Drive)
• Rear Window Panel Trim Replacement (Sedan)
• Basecoat/Clearcoat Paint Systems
• Paint Gauges
• Liftgate Center Applique Replacement (Wagon)
• DTC B0099
• Object Detection Description and Operation (UD7 with Display)
• Pedestrian Impact Detection System Disabling and Enabling