Object Detection System Cadillac DTS I

Scheme 1

Scheme 2

Scheme 3

Scheme 4

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - Object Detection

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check will provide the following information

1. The identification of the control module which commands the system
2. The ability of the control module to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of Diagnostic System Check - Vehicle , will identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Description

Each object sensor is a 3-wire sensor that is both a transmitter and a receiver that includes a signal circuit, a low reference circuit, and an 8-volt supply voltage circuit. The object alarm module supplies 8 volts to the object sensors via the object sensor supply voltage circuit and provides ground via the low reference circuit. The object alarm module triggers the sensors in a sequential loop. After each sensor transmits, the object alarm module uses the echo or signal return to calculate the distance and position of an object from the front or rear bumper.

Conditions for Running the DTC

1. Ignition voltage is between 9-16 volts.
2. The vehicle is in DRIVE.

B0954 01, B0955 01, B0956 01, or B0957 01

The object detection alarm module signal circuit is short to battery.

B0954 06, B0955 06, B0956 06, or B0957 06

The object detection alarm module signal circuit is short to ground or open.

B0954 08, B0955 08, B0956 08, or B0957 08

The object detection alarm module signal circuit is invalid.

B0954 21, B0955 21, B0956 21, or B0957 21

The object detection alarm module has an incorrect period.

Action Taken When the DTC Sets

1. The object alarm module commands the telltale red indicator ON.
2. The object alarm module sends a serial data communication message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC), and the chime will sound.

Conditions for Clearing the DTC

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles, if the condition for the malfunction is no longer present.

Reference Information

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
3. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)
4. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Verify that DTC B1E3A is not current. If B1E3A is current, refer to «DTC B1E3A»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .
2. Park brake disabled, transmission in DRIVE, suitable object behind an appropriate sensor, verify that the appropriate Front Region scan tool parameter displays a value between Zone 1 and Zone 8.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector of the appropriate front object sensor.
2. Ignition OFF for 30 seconds, test for less than 5.0 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 object alarm module.
3. Ignition ON, transmission in DRIVE, test for 8.0-9.0 volts between the rear object sensor supply voltage circuit terminal 1 and ground. If greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the object alarm module. 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 object alarm module.
4. Ignition OFF, connect the appropriate rear object sensor and disconnect X3 harness connector at the object alarm module.
5. Ignition ON, test for less than 1.0V between signal circuit and ground of the appropriate rear object sensor listed below: LF middle object sensor signal circuit terminal 5 LF corner object sensor signal circuit terminal 3 RF middle object sensor signal circuit terminal 10 RF corner object sensor signal circuit terminal 11 If greater than the specified range, test the signal circuit for a short to voltage.
6. Ignition OFF, test for infinite resistance between signal circuit and ground of the appropriate rear object sensor listed below: LF middle object sensor signal circuit terminal 5 LF corner object sensor signal circuit terminal 3 RF middle object sensor signal circuit terminal 10 RF corner object sensor signal circuit terminal 11 If less than the specified value, test the signal circuit for a short to ground.
7. Test for less than 2 ohms between the sensor signal circuit terminal 3 and signal circuit of the appropriate rear object sensor listed below: LF middle object sensor signal circuit terminal 5 LF corner object sensor signal circuit terminal 3 RF middle object sensor signal circuit terminal 10 RF corner object sensor signal circuit terminal 11 If greater than the specified range, test the signal circuit for an open/high resistance.
8. If all circuits test normal, test or replace the appropriate rear object alarm sensor and verify that the DTC does not reset. If the DTC resets, replace object alarm module.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Front Object Alarm Sensor Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/dts/i-2005-2011/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/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Each object sensor is a 3-wire sensor that is both a transmitter and a receiver that includes a signal circuit, a low reference circuit, and an 8-volt supply voltage circuit. The object alarm module supplies 8 volts to the object sensors via the object sensor supply voltage circuit and provides ground via the low reference circuit. The object alarm module triggers the sensors in a sequential loop. After each sensor transmits, the object alarm module uses the echo or signal return to calculate the distance and position of an object from the rear bumper.

1. Ignition voltage is between 9-16 volts.
2. The vehicle is in REVERSE.

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

The object alarm module signal circuit is short to battery.

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

The object alarm module signal circuit is short to ground or open.

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

The object alarm module signal circuit is invalid.

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

The object alarm module has an incorrect period.

1. The object alarm module commands the telltale red indicator ON.
2. The object alarm module sends a serial data communication message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the driver information center (DIC), and the chime will sound.

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles, if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Verify that DTC B1E3A is not current. If B1E3A is current, refer to «DTC B1E3A»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .
2. Park brake disabled, transmission in REVERSE, suitable object behind an appropriate sensor, verify that the appropriate Rear Region scan tool parameter displays a value between Zone 1 and Zone 8.

1. Ignition OFF, disconnect the harness connector of the appropriate rear object sensor.
2. Ignition OFF for 30 seconds, test for less than 5.0 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 object alarm module.
3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 volts between the rear object sensor supply voltage circuit terminal 1 and ground. If greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the object alarm module. 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 object alarm module.
4. Ignition OFF, connect the appropriate rear object sensor and disconnect X1 harness connector at the object alarm module.
5. Ignition ON, test for less than 1.0V between signal circuit and ground of the appropriate rear object sensor listed below: LR middle object sensor signal circuit terminal 3 LR corner object sensor signal circuit terminal 5 RR middle object sensor signal circuit terminal 2 RR corner object sensor signal circuit terminal 1 If greater than the specified range, test the signal circuit for a short to voltage.
6. Ignition OFF, test for infinite resistance between signal circuit and ground of the appropriate rear object sensor listed below: LR middle object sensor signal circuit terminal 3 LR corner object sensor signal circuit terminal 5 RR middle object sensor signal circuit terminal 2 RR corner object sensor signal circuit terminal 1 If less than the specified value, test the signal circuit for a short to ground.
7. Test for less than 2 ohms between the sensor signal circuit terminal 3 and signal circuit of the appropriate rear object sensor listed below: LR middle object sensor signal circuit terminal 3 LR corner object sensor signal circuit terminal 5 RR middle object sensor signal circuit terminal 2 RR corner object sensor signal circuit terminal 1 If greater than the specified range, test the signal circuit for an open/high resistance.
8. If all circuits test normal, test or replace the appropriate rear object alarm sensor and verify that the DTC does not reset. If the DTC resets, replace object alarm module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for the object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm module directly controls the rear parking assist (RPA) display. The RPA display consists of 2 amber and one red LED that indicate the distance of an object from the rear bumper. The object alarm module will also use an audible warning by sending a serial data message to the radio. Each object sensor is a 3-wire sensor that is both a transmitter and a receiver that includes a signal circuit, a low reference circuit, and an 8-volt supply voltage circuit. The object alarm module supplies 8 volts to the object sensors via the object sensor supply voltage circuit and provides ground via the low reference circuit. The object alarm module triggers the sensors in a sequential loop and after each sensor transmits, the object alarm module uses the echo or signal return to calculate the distance and position of an object from the rear bumper.

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

The following condition must exist for 300 milliseconds

The object alarm module detects that one of the three indicator control circuits for the RPA display is open or short to ground.

1. The object alarm module sets a DTC.
2. The object alarm module commands ON the information center telltale red indicator and disable the object detection system.
3. The object alarm module will send a serial data communication message to the instrument panel (I/P) to scroll SERVICE PARK ASSIST message on the driver information center (DIC), and the chime will sound.

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles, if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Sensor Voltage Feed Output parameter. The reading should be between 8.0 V-9.0 V.
2. Perform the appropriate LED Test, using the scan tool. Observe the operation of the appropriate LEDs. All LEDs should illuminate.

Front Parking Assist

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Ignition ON, verify that a test lamp illuminates between the 12V voltage supply circuit terminal A and ground. If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance.
3. Connect a test lamp between the control circuit and the 12V voltage supply circuit terminal A of the appropriate LED listed below: Left amber LED control circuit terminal B Center amber LED control circuit terminal C Red LED control circuit terminal D
4. Command the appropriate LED ON and OFF with a scan tool, verify that a test lamp turns ON and OFF when switching between commanded states. If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module.
5. If all circuits test normal, test or replace the RPA display.

Rear Parking Assist

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Ignition ON, verify that a test lamp illuminates between the 12V voltage supply circuit terminal 4 and ground. If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance.
3. Connect a test lamp between the control circuit and the 12V voltage supply circuit terminal 4 of the appropriate LED listed below: Left amber LED control circuit terminal 3 Center amber LED control circuit terminal 2 Red LED control circuit terminal 1
4. Command the appropriate LED ON and OFF with a scan tool, verify that a test lamp turns ON and OFF when switching between commanded states. If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module.
5. If all circuits test normal, test or replace the RPA display.

Component Testing

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Connect a 10A fused jumper wire between 12V voltage supply circuit terminal and B+ of the appropriate parking assist listed below: Front Parking Assist voltage supply circuit terminal 4 Rear Parking Assist voltage supply circuit terminal A
3. Connect a 10A fused jumper wire between control circuit terminal and ground of the appropriate LED listed below: Front Parking Assist left amber LED control circuit terminal 3 Front Parking Assist center amber LED control circuit terminal 2 Front Parking Assist red LED control circuit terminal 1 Rear Parking Assist left amber LED control circuit terminal B Rear Parking Assist center amber LED control circuit terminal C Rear Parking Assist red LED control circuit terminal D
4. Verify that the appropriate LED illuminates. If the component does not perform as specified, replace the RPA display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/gauges-instrument-panels/#instrument-panel-system-displays-gages) for information center telltale assembly replacement (front)
2. «Information Center Telltale Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) for information center telltale assembly replacement (rear)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for front and rear object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

The system voltage must be between 9-16 volts.

B0987 01

The VDAAW detects a short to battery in the indicator control circuit.

B0987 04

The VDAAW detects an open or high resistance in the indicator control circuit.

1. The VDAAW stores the DTC to memory.
2. Lane departure system may not operate.

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF for 120 seconds, disconnect the harness connector at the headlamp switch.
2. Ignition ON, verify that a test lamp does not illuminate between the indicator control circuit terminal 16 and ground. If the test lamp illuminates, test the indicator control circuit for a short to voltage. If the circuit tests normal, replace the VDAAW module.
3. Install a 3-amp fused jumper between the indicator control circuit terminal 16 and B+. Verify that the scan tool Mode LED parameter is ON. If not the specified value, test the indicator control circuit for an open/high resistance. If the circuit tests normal, replace the VDAAW module.
4. If all circuits test normal, replace the headlamp switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Headlamp Switch Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-lights/#lighting-systems)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for VDAAW replacement, setup and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

The system voltage must be between 9-16 volts.

The VDAAW has not learned the calibration.

1. The VDAAW stores the DTC to memory.
2. Lane departure system may not operate.

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. With the scan tool, verify DTC B0988 is not set. If DTC B0988 is set, refer to «Vehicle Direction Alert Alarm Warning Module Calibration»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for VDAAW replacement, setup and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the object alarm module performs a self test to verify if any critical malfunction exists within the system. When the object alarm system has completed the power-up mode, the object alarm module establishes communication with the body control module (BCM). During the power-up mode the object detection module checks for a valid calibration data set, if no valid calibration set is found, the object alarm module disables the system and commands the red indicator ON.

Ignition voltage is between 9-16 volts.

When the calibration data set is not programmed in the object alarm module upon startup.

1. The object alarm module commands red LED ON.
2. The object alarm module will send a serial data communication message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message on the driver information center (DIC) and the chime sounds.

1. The DTC becomes history when the conditions for setting the DTC are no longer present.
2. The history DTC clears 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B1008 is not set.

1. If the DTC is set, program the object alarm module, refer to «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) . If the DTC resets, replace the object alarm 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/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the object alarm module receives and stores the vehicle identification number (VIN) from the body control module (BCM). The BCM sends serial data messages to the object alarm module with the VIN information. The object alarm module will compare the VIN received to the VIN stored in memory. If the VIN stored in memory does not match the VIN transmitted by the BCM, the object alarm module sets a DTC and commands the red indicator ON indicating a system malfunction.

Ignition voltage is between 9-16 volts.

The object detection module VIN digits does not match the digits stored in the BCM.

1. The object alarm system is disabled.
2. The object alarm module commands ON the information center telltale red indicator.
3. The object alarm module sends a serial data message to the instrument panel Cluster (IPC) to display SERVICE PARK ASSIST message on the driver information center (DIC), and the chime will sound.

1. The DTC becomes history when the conditions for setting the DTC are no longer present. The VIN that is stored in the object alarm module matches the VIN stored in the BCM.
2. The history DTC clears 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__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 object alarm module, refer to «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) . If the DTC resets, replace the object alarm module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for the BCM and object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

Battery voltage must be between 9-16 volts.

1. DTC B101D 3B will set when the ECU fails the internal self test.
2. DTC B101D 3C will set when the ECU detects an internal communications failure.
3. DTC B101D 32 will set when the ECU detects a general memory failure.
4. DTC B101D 34 will set when the ECU detects a RAM failure.

The ECU will disable the VDAAW feature.

1. The condition responsible for setting the DTC no longer exists.
2. You issue a scan tool CLEAR DTCs command.
3. A history DTC will clear once 100 consecutive 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

With the scan tool, clear DTC B101D.

1. If DTC B101D does not clear or if it resets, replace the VDAAW module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for VDAAW replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

Battery voltage must be between 9-16 volts.

B101E 4A

This DTC will set when the ECU detects a memory checksum mismatch.

B101E 4B

This DTC will set when the ECU detects a calibration failure.

The ECU will disable the VDAAW feature.

1. The condition responsible for setting the DTC no longer exists.
2. You issue a scan tool CLEAR DTCs command.
3. A history DTC will clear once 100 consecutive 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

With the scan tool, clear DTC B101E 4A.

1. If DTC B101E 4A does not clear or if it resets, replace the VDAAW module.

With the scan tool, verify DTC B101E 4B is not set.

1. If DTC B101E 4B is set, refer to «Vehicle Direction Alert Alarm Warning Module Calibration»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for VDAAW replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear and front (if equipped) bumpers. The object detection system will notify the driver when backing up while parking at speeds less than 8 km/h (5 mph). The object detection system will use front and rear display indicators and the radio speakers for notification.

Ignition voltage is between 9-16 volts.

B1E3A 03

The object alarm module has detected the object alarm sensor supply voltage circuit is below 7.2 volts.

B1E3A 07

The object alarm module has detected the object alarm sensor supply voltage circuit is above 9.2 volts.

1. The object alarm module sets a DTC.
2. The object alarm module commands ON the information center telltale red indicator.
3. The object alarm module will send a serial data communication message to the instrument panel (I/P) to scroll SERVICE PARK ASSIST message on the driver information center (DIC), and the chime will sound.

1. The DTC becomes history when the conditions for setting the DTC are no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles, if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, transmission in REVERSE, verify that Sensor Feed Voltage Output scan tool parameter value is greater than 8.0 Volts.

1. Ignition OFF, disconnect harness connectors at all rear object sensors.
2. Ignition ON, transmission in DRIVE for front parking assist and in REVERSE for rear parking assist, test for 8.0-9.0 V between object sensor supply voltage circuit terminal 1 and ground. If less than the specified range, test the supply voltage circuit for a short to ground. If all circuits test normal, replace the object alarm module. IMPORTANT: A short to voltage on the component signal circuit may cause this DTC to set. If greater than the specified range, test the supply voltage circuit for a short to voltage. If all circuits test normal, replace the object alarm module.
3. Connect each object sensor one at a time, while monitoring Sensor Feed Voltage Output scan tool parameter. The parameter value should be greater than 8.0 V. If less than the specified value after an individual object sensor is connected, test or replace that object sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
2. «Front Object Alarm Sensor Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for front and rear object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

The system voltage must be between 9-16 volts.

The vehicle direction alert alarm warning (VDAAW) detects a short to ground in the indicator control circuit.

1. The VDAAW stores the DTC to memory.
2. Lane departure system may not operate.

1. This DTC will change from current to history when the fault is no longer present.
2. A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction 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 (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF for 120 seconds, disconnect the harness connector at the headlamp switch.
2. Ignition ON, verify the scan tool Mode Switch parameter is Inactive. If not the specified value, test the switch control circuit for a short to ground. If the circuit tests normal, replace the VDAAW module.
3. If all circuits test normal, replace the headlamp switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Headlamp Switch Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-lights/#lighting-systems)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for VDAAW control module replacement, setup and programming

Important Preliminary Checks Before Starting

1. Review the system operation in order to familiarize yourself with the system functions. Refer to «Object Detection Description and Operation (Rear Park Assist)»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) or «Object Detection Description and Operation (VDAAW)»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system__object-detection-description-operation-vdaaw) or «Object Detection Description and Operation (SOD)»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system__object-detection-description-operation-sod) .
2. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__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. «Information Center Telltale Malfunction»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
2. «Side Object Sensor Malfunction»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)
3. «Vehicle Direction Alert Alarm Warning Malfunction»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using the diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The object alarm system will use the rear parking assist (RPA) display indicators and the radio speakers to notify the driver when an object is within the object alarm system field of view. Power is provided to the RPA display by the object alarm module via the RPA display supply voltage circuit. The RPA display indicators are controlled by the object alarm module via the indicator control circuits. The object alarm module provides the ground for the indicator control circuits. The object alarm module is grounded at G301.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Sensor Voltage Feed Output parameter. The reading should be between 8.0 V-9.0 V.
2. Perform the appropriate LED Test, using the scan tool. Observe the operation of the appropriate LEDs. All appropriate LEDs should illuminate.

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Ignition ON, verify that a test lamp illuminates between the 12V voltage supply circuit terminal 4 and ground. If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance.
3. Connect a test lamp between the control circuit and the 12V voltage supply circuit terminal 4 of the appropriate LED listed below: Left amber LED control circuit terminal 3 Center amber LED control circuit terminal 2 Red LED control circuit terminal 1
4. Command the appropriate LED ON and OFF with a scan tool, verify that a test lamp turns ON and OFF when switching between commanded states. If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module.
5. If all circuits test normal, test or replace the RPA display.

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Ignition ON, verify that a test lamp illuminates between the 12V voltage supply circuit terminal A and ground. If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance.
3. Connect a test lamp between the control circuit and the 12V voltage supply circuit terminal A of the appropriate LED listed below: Left amber LED control circuit terminal B Center amber LED control circuit terminal C Red LED control circuit terminal D
4. Command the appropriate LED ON and OFF with a scan tool, verify that a test lamp turns ON and OFF when switching between commanded states. If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module.
5. If all circuits test normal, test or replace the RPA display.

1. Ignition OFF, disconnect the harness connector at the RPA display.
2. Connect a 10A fused jumper wire between 12V voltage supply circuit terminal and B+ of the appropriate parking assist listed below: Front parking assist voltage supply circuit terminal 4 Rear parking assist voltage supply circuit terminal A
3. Connect a 10A fused jumper wire between control circuit terminal and ground of the appropriate LED listed below: Front parking assist left amber LED control circuit terminal 3 Front parking assist center amber LED control circuit terminal 2 Front parking assist red LED control circuit terminal 1 Rear parking assist left amber LED control circuit terminal B Rear parking assist center amber LED control circuit terminal C Rear parking assist red LED control circuit terminal D
4. Verify that the appropriate LED illuminates. If the component does not perform as specified, replace the RPA display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Information Center Telltale Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/gauges-instrument-panels/#instrument-panel-system-displays-gages) for information center telltale assembly replacement (front)
2. «Information Center Telltale Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) for information center telltale assembly replacement (rear)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for the BCM, front and rear object alarm module replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The side object detection (SOD) sensors monitor and detect objects of interest in the vehicle blind spots or blind zones on each side of the vehicle. The detection zone is the vehicle blind spot that may not be visible in the inside or outside rearview mirrors. The SOD sensors uses radar to detect objects of interest within the detection zones. There is one SOD sensor on each side of the vehicle, the right and left sensor. Each SOD sensor monitors and reports objects of interest within a specified detection zone. The SOD system uses visual indicators located on both the right and left side rearview mirrors to alert the driver to the presence of an object of interest in the detection zone. The SOD indicators are controlled by the driver and passenger door modules. The SOD system sends status information and indication requests to the door modules via the serial data circuit. The door modules monitor the SOD system and illuminates the SOD indicators when there is a loss of serial data communication with the SOD sensors. Communication between the SOD system and the door module is via the master SOD sensor. On powering up the vehicle, both SOD outside rearview mirror indicator should come on briefly for a bulb check. The SOD system consists of these main components

1. Left SOD Sensor
2. Right SOD Sensor
3. Driver and Passenger Door Modules
4. Left and Right Rearview Mirror
5. Driver Information Center (DIC) and/or Navigation Radio

Diagnostic Aids

1. The SOD system has a diagnostic function that is capable of detecting when either sensors is severely blocked by mud, snow, water or ice build up in front of the sensor. When both sensors are blocked, the SOD indicator in the left and right side mirrors are turned ON and the driver information center (DIC) displays CLEAN SIDE BLIND ZONE ALERT. The SOD system transitions back to the normal operating state when the blockage is removed. This message may also activate during extended driving in isolated areas with little infrastructure (guardrails, road signs, trees, etc.) and light traffic.
2. Prior to performing diagnostics, clean both sides of the fascia and sensor of any contamination (mud, dirt, bumper stickers, labels, etc.). The SOD system will not operate if blocked by mud, snow ice slush or water from heavy rain storms.
3. The SOD system is disabled if any of the following occurs: The SOD indicator is reported failed by the door modules. There is a loss of serial data communication or a SOD system DTC is set. The SOD system is disabled by the driver from the DIC.
4. The SOD sensors maintain a history buffer of up to 16 SOD events which can be accessed using the scan tool.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify that the side object detection (SOD) system indicators located in the outside rearview mirrors illuminate briefly and turn OFF for a system self test. If both SOD indicators do not come ON briefly for a system self test and the driver information center (DIC) displays SIDE BLIND ZONE ALERT SYSTEM OFF, the SOD system has been disabled from the DIC by the driver and is operating normally.

1. If both SOD indicators come ON and stay ON after the system self test and the DIC displays CLEAN SIDE BLIND ZONE ALERT SYSTEM, check for contamination on the fascia and sensor surface making sure they are clean.

1. If one or both SOD indicators stay on after the system self test and the DIC displays SERVICE SIDE BLIND ZONE ALERT SYSTEM, refer to «SOD Indicator(s) Stay On After Self Test»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .

1. If the SOD indicator(s) do not illuminate briefly for a self test, refer to «Right or Left Indicator Malfunction»(/cadillac/dts/i-2005-2011/remont/collisionavoidance/#object-detection-system) .

Right SOD Indicator Malfunction

1. Ignition OFF, disconnect the harness connector at the right SOD sensor.
2. Test for less than 5.0 ohms between the right SOD ground circuits terminals 5 and 6 and ground. If greater than the specified range, test the ground circuits for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Ignition OFF, disconnect the X3 and X7 harness connector at the right front door module.
5. Test for less than 1.0 ohm between the SOD indicator low reference circuit connector X3 terminal 8 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
6. Ignition OFF, test for greater than 1.0 ohm between the SOD indicator signal circuit connector X7 terminal 8 and ground. If less than the specified range, test the signal circuit for a short to ground.
7. Ignition ON, test for less than 1.0 volt between the SOD indicator signal circuit connector X7 terminal 8 and ground. If the greater than the specified range, test the signal circuit for a short to voltage.
8. Ignition OFF, disconnect the harness connector X2 at the right outside rearview mirror.
9. Test for less than 1.0 ohm along the right SOD indicator signal circuit connector X7 terminal 8 and the right outside rearview mirror terminal. If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit test normal, replace the right side rearview mirror.
10. If all circuits test normal, replace the right door module.

Left SOD Indicator Malfunction

1. Ignition OFF, disconnect the harness connector at the left SOD sensor.
2. Test for less than 5.0 ohms between the left SOD sensor ground circuit terminal 5 and ground. If greater than the specified, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Ignition OFF, disconnect the X3 and X7 harness connector at the left front door module.
5. Test for less than 1.0 ohm between the left SOD indicator low reference circuit connector X3 terminal 8 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
6. Ignition OFF, test for greater than 1.0 ohm between the left SOD indicator signal circuit connector X7 terminal 8 and ground. If less than the specified range, test the signal circuit for a short to ground.
7. Ignition ON, test for less than 1.0 volt between the left SOD indicator signal circuit connector X7 terminal 8 and ground. If greater than the specified range, test the signal circuit for a short to voltage.
8. Ignition OFF, disconnect the harness connector X2 at the left outside rearview mirror.
9. Test for less than 1.0 ohm along the left SOD indicator signal circuit connector X7 terminal 8 and the left outside rearview mirror terminal. If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit test normal, replace the left side rearview mirror.
10. If all circuits test normal, replace the left door module.

SOD Indicators Stay On After Self Test

1. Ignition OFF, disconnect the harness connector at the left and right side SOD sensor.
2. Test for less than 5.0 ohms between the ground circuit terminals listed below and ground. Right SOD Sensor Terminal 5 Right SOD Sensor Terminal 6 Left SOD Sensor Terminal 5 If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminals listed below and ground. Left SOD Sensor Terminal 2 Right SOD Sensor Terminal 2 If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the right or left SOD sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for the left door module, the right door module and the SOD sensor replacement, setup, and programming
2. «Power Mirror Replacement»(/cadillac/dts/i-2005-2011/remont/mirrors/#mirror-systems)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The vehicle alert alarm warning (VDAAW) system consists of a lane departure warning (LDW) module mounted on the windshield. The VDAAW is enabled and disabled through a toggle switch located in the headlamp switch assembly. When enabled, the VDAAW will illuminate the indicator located in the toggle switch. A camera located in the LDW module is used to locate lane markings in the road. When the system is working and can detect the lane markings the VDAAW will illuminate the lane departure warning indicator in the instrument panel cluster (IPC). The IPC indicator will illuminate green when the system is operating properly and will illuminate and flash amber when the vehicle crosses a lane marking without the turn signal being used. An audible warning will also sound three times when the IPC indicator is flashing. The VDAAW system communicates with the IPC via serial data.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (Rear Park Assist) or Object Detection Description and Operation (VDAAW) or Object Detection Description and Operation (SOD)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Command the VDAAW ON and OFF, using the scan tool parameter. VDAAW should become Active and Inactive when changing between commanded states.

1. Ignition OFF for 120 seconds, disconnect the harness connector at the VDAAW module.
2. Ignition ON, verify that a test lamp illuminates between the B+ voltage circuit terminal 2 and ground. If the test lamp does not illuminate, test the B+ voltage circuit for an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the B+ voltage circuit for a short to ground.
3. Ignition OFF, check for less than 1.0 ohm between the ground circuit terminal 4 and ground. If greater than the specified range, test the ground circuit for a short to voltage or open/high resistance.
4. Ignition OFF for 120 seconds, connect the harness connector at the VDAAW module and disconnect the harness connector at the headlamp switch.
5. Ignition ON, verify the scan tool Mode Switch parameter is Inactive. If not the specified value, test the switch signal circuit for a short to voltage. If the circuit tests normal, replace the VDAAW module.
6. Install a 3-amp fused jumper wire between the switch signal circuit terminal 6 and the B+ voltage circuit. Verify the scan tool Mode Switch parameter is Active. If not the specified value, test the switch signal circuit for an open/high resistance. If the circuit tests normal, replace the VDAAW module.
7. Verify the scan tool Mode LED parameter is OFF. If not the specified value, test the indicator signal circuit for a short to voltage. If the circuit tests normal, replace the VDAAW module.
8. Install a 3-amp fused jumper wire between the indicator signal circuit terminal 5 and the B+ voltage circuit. Verify the scan tool Mode LED parameter is ON. If not the specified value, test the indicator signal circuit for an open/high resistance. If the circuit tests normal, replace the VDAAW module.
9. If all circuits test normal, test or replace the headlamp switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Headlamp Switch Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-lights/#lighting-systems)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for VDAAW control module replacement, setup and programming

Scheme 5

Removal Procedure

1. Insert your fingers between the headliner and the information center telltale assembly bezel. Gently pull down to release the display bezel.
2. Use a screwdriver to release the locking tab at the rear of the telltale assembly.
3. Tilt the display down. Pull down to remove.
4. Disconnect the electrical connector.

Installation Procedure

1. Connect the electrical connector to the information center telltale assembly.
2. Insert the display into the headliner until the locking tab locks into position. The display may need to be rocked into position.
3. Install bezel by pushing it up until the tabs lock into position.

1. Remove front bumper fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .
2. Disconnect electrical from the front object sensor.
3. Lift the locking tabs on the housing and remove the front object sensor.

1. Insert the sensor into the housing.
2. Connect the electrical connector to the front object sensor.
3. Install the front bumper fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .

Scheme 6

1. Remove rear bumper fascia. Refer to «Rear Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .
2. Disconnect electrical from the rear object sensor.
3. Lift the locking tabs on the housing and remove the rear object sensor.

1. Insert the sensor into the housing.
2. Connect the electrical connector to the rear object sensor.
3. Install the rear bumper fascia. Refer to «Rear Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .

Rear Object Sensor Housing Replacement

1. Remove the rear fascia. Refer to «Rear Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-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»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .

Scheme 7

Scheme 8

Calibration Criteria

The vehicle departure alert alarm warning (VDAAW) system will require a recalibration procedure after replacing a module.

Calibration Procedure

Conditions to complete the self-calibration procedure

1. Operating the vehicle at 56 km/h (35 mph) or more
2. Clear stretch of straight road
3. Driving during the daytime
4. Visible references (well defined lane markings, curbs, guard rails, fences, buildings, etc.)

One or more of the following conditions may increase the length of time required to complete the self-calibration procedure

1. Operating the vehicle at 31 to 61 km/h (19 to 38 mph)
2. Curves in roadway
3. Driving through snow, fog, or driving at night or directly into the sun
4. Bott's Dots type lane markings
5. Poor contrast lane markings

Conditions that will prevent completion of the self-calibration procedure

1. Operating the vehicle at less than 31 km/h (19 mph)
2. No visible lane markings

When the VDAAW system is in calibration mode, the amber light in the IPC will remain illuminated. When the calibration is complete, the amber indicator will turn green, indicating the system is ready to assist.

If the VDAAW system is disabled with the VDAAW switch, the amber light will turn off. The system will still run the calibration procedure in the background.

Immediately after the self calibration procedure, there may be a delay in lane crossing alerts. The VDAAW system will run further calibration tests as the vehicle is driven in order to improve performance.

Indication to Driver

Service Lane Departure Warning DIC message will display when DTC 0988 is set.

Object Alarm System Description

The object alarm module monitors the distance and how close a vehicle is to an object when backing up in a parking maneuver. The object alarm module will notify the driver of any objects of interest when backing up at speeds less than 8 km/h (5 mph). The distance between a vehicle and an object of interest is monitored by 4 ultrasonic sensors located in the rear bumper of the vehicle. The object alarm sensors receive the echo signal reflected off an object of interest while the vehicle is backing up at speeds less than 8 km/h (5 mph). The object alarm module receives the vehicle speed from the ECM via the serial data circuit. When the backing up speed exceeds 8 km/h (5 mph), the object alarm system is disabled. The object alarm system uses visual displays and audible warnings from the radio speakers to warn the driver of an object of interest within the defined field of view. The BCM controls the object alarm system chime function and sends serial data requests to the radio to sound the chime as needed. The visual display comprises of two amber and one red indicator and these indicators illuminate based on the vehicle distance to the object of interest. When the ignition is ON and the vehicle is placed into REVERSE, the object detection system performs a bulb check on the rear display.

Object Alarm Sensor

The rear object alarm systems are equipped with 4 ultrasonic sensors located on the rear bumpers of the vehicle. These sensors are used to monitor how close the vehicle is to an object. The object alarm sensors receive the echo signals reflected off an object of interest while the vehicle is backing up at speeds less than 8 km/h (5 mph). The object alarm sensor is a 3-wire sensor comprising of the supply voltage circuit, signal circuit and the low reference circuit. Power is provided to the object alarm sensor via the supply voltage circuit from the object alarm module. The object alarm module also provides ground to the object alarm sensor via the object alarm sensor low reference circuit. The typical object detection alarm sensor signal voltage when the system is active is between 7.2-9.2 V.

Information Center Telltale Assembly

The information center telltale assembly visual display comprises of two amber and one red indicator. These indicators illuminate based on the vehicle distance to the object of interest. When the ignition is ON and the vehicle is placed REVERSE, the object detection system performs a bulb check on the rear display. When a malfunction exists in the object alarm system, the object alarm module illuminates the information center red indicator continuously. The object alarm module provides power to the rear information center telltale assembly. The object alarm module controls the information center indicators by providing ground via the indicator control circuit when active.

Rear Object Alarm Detection System

When the ignition is ON and the vehicle is placed into reverse, the object detection system performs a bulb check. During the bulb check, the 3 indicators on the rear display will illuminate for approximately 2 seconds to indicate that the system is working. The object detection system performs a bulb check and operates when the following conditions are present

1. The ignition is ON.
2. The vehicle is placed in REVERSE (R).
3. The vehicle speed is less than 5 mph (8 km/h). At speeds greater than 5 mph (8 km/h), the rear object detection system is disable. The red indicator flashes to warn the driver that the object detection system is disabled.

Object Detection Alarm System Operation

The object detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear bumper. When the system detects an object while the vehicle is in reverse, one of the following will occur

1. If the object is less than 0.3 m (12 in) away from the vehicle, the amber outside, amber middle, and the red outside indicators flash and the chime sounds continuously for 5 seconds.
2. If the object is less than 0.3-0.6 m (12-24 in) away from the vehicle, the amber outside, amber middle, and the red outside are ON.
3. If the object is 0.6-1.0 m (24-40 in) away from the vehicle, the amber outside, and the amber middle indicators are ON.
4. If the object is 1.0-2.5 m (40-98 in) away from the vehicle, the amber outside indicator is ON with a single chime and this is the first detection of an object.

The object detection system can detect objects 7.6 cm (3 in) wide and at least 25.4 cm (10 in) tall. It cannot detect objects above the level of the roof.

If the object detection system detects a malfunction, the object detection system sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST on the driver information center (DIC). The chime will sound and the red indicator on the information center telltale assembly illuminates continuously, notifying the driver that a malfunction exist.

Service Park Assist

The driver information center (DIC) displays SERVICE PARK ASSIST when the object alarm module detects a malfunction in the object detection system and sends a request to the DIC for display of the message. The DIC also displays SERVICE PARK ASSIST when there is a loss of communication with the object alarm module.

Park Assist Disabled

The PARK ASSIST DISABLED message is displayed in the DIC when the object alarm system is disabled due to conditions that disable or inhibit the system. The object alarm module requests the DIC via the serial data circuit to display PARK ASSIST DISABLED when it detects that one of the following conditions is true

1. Object alarm system disabled through DIC vehicle customization feature. Refer to the Owners Manual for more information.
2. The object alarm module detects that the vehicle speed is greater than 8 km/h (5 mph).
3. Automatic Object induced disable feature such as towing a trailer, bicycle rack.
4. The park brake is not fully released.
5. An object is hanging out of the trunk.
6. The system receives vibrations from a large nearby vehicle or from a heavy equipment such as a jackhammer.
7. The sensors are not clean.

Object Detection Description & Operation (VDAAW)

The vehicle direction alert alarm warning (VDAAW) system is a convenience feature that issues a warning when the system detects that the vehicle has unintentionally crossed a lane marking. The VDAAW system consists of 2 components, the lane departure warning (LDW) module and the VDAAW enable/disable switch, located in the headlamp switch assembly. There are 3 circuits: a dimming backlighting circuit, a switch signal, and an LED indicator circuit. The VDAAW system remembers the last switch setting (ON or OFF) and will return to the same setting for the next ignition cycle. The LDW module is mounted to the windshield. It uses a forward-facing camera to determine lane markings. It is important that the windshield in front of the camera remains clean. Fog on the windshield or on the camera lens can also inhibit proper operation. The system has 3 states of operation

1. Disabled: The system is disabled by the operator, using the disable switch.
2. Not Ready To Assist (NRTA): The system is enabled, but not ready to assist when any of the following conditions is true: Vehicle speed is less than 35 mph, or the vehicle drops below 30 mph when the system initially was in the ready to assist mode. The system is designed to function at speeds greater than 35 mph. The system cannot detect lane markings. This may be because there are no lane markings, as on a country road, or that the lane markings cannot be determined due to snow, rain, or other driving conditions. The windshield area in front of the camera or the camera lens is blocked by fog, dirt, damage to the windshield, or other elements that may prevent the camera from detecting lane markings.
3. Ready To Assist (RTA): The system is enabled and ready to warn of the unintentional lane crossing. The RTA state is indicated by a green indicator on the instrument panel cluster. Lane Crossing Alerts The system will not give alerts under the following conditions: The correct turn signal is activated. An activated turn signal is interpreted as an intentional lane crossing. The operator makes a sharp maneuver. The operator makes a significant acceleration change or significant steering change during a lane crossing. Lane crossing alert consists of the following: Three chimes are activated through the vehicle audio system. The RTA indicator that is normally green will turn to flashing amber.

VDAAW DIC Messages

The VDAAW system commands the DIC to display the following messages to alert the driver of a system concern or status information

1. LANE DEPARTURE SYSTEM UNAVAILABLE
2. SERVICE LANE DEPARTURE SYSTEM

Object Detection Description & Operation (SOD)

The side object detection (SOD) system detect objects of interest in the vehicle blind spots or blind zones on each side of the vehicle. The SOD sensors are located within the rear fascia sides. Each SOD sensor monitors its own detection zone. The SOD system uses visual indicators located on both the right and left side rear view mirrors to alert the driver to the presence of an object of interest. The detection zones cover areas that may not be visible in the inside or outside rear view mirrors. Side blind zone alert (SBZA) is an alternate name sometimes used for this system.

The SOD sensors use radar to detect objects of interest within the detection zones. The rear integration module (RIM) provides battery power to the SOD system. The two SOD sensors are identical and interchangeable, but an additional harness ground connection to the right sensor configures it for operation on that side. Communication between the SOD system and the door module is via the right SOD sensor. The door modules control the SOD indicators via hard wire circuits. The SOD system can be turned ON and OFF using either the driver information center (DIC) or navigation radio. The SOD system operates when the vehicle is in drive and the park brake is not engaged.

When the SOD system detects an object of interest on any side of the vehicle, the right SOD sensor sends a serial data message to the appropriate door module to turn the corresponding SOD indicator ON. If a SOD indicator is ON and the turn signal is activated in that direction, the SOD indicator flashes to heighten the alert. With the exception of the initial bulb check when the vehicle is started, solid illumination of both SOD indicators means there is a system error or malfunction.

The SOD system will not operate if blocked by mud, dirt, snow, ice, slush or water from heavy rainstorms. Prior to performing diagnostic, clean both sides of the fascia and sensor of any contamination (mud, dirt, bumper stickers, labels, etc.). However, under normal circumstances (dry weather and clean fascia), if the SOD indicators do not light up consistently when the system is ON and vehicles are in the blind zone, the system may need service.

Occasional missed alerts can occur even under normal circumstances (dry weather and clean fascia). The SOD system does not need to be serviced due to an occasional single missed alert (i.e., when the SOD indicators do not activate with the system ON and a vehicle is in the blind zone). It is important to note that the number of missed alerts increases with increased rainfall and/or road spray due to water sheeting on the fascia. This may happen when rain and road mist conditions cause water sheeting to block the sensor transmission and does not mean that the sensors need to be serviced.

The SOD sensors maintain a history buffer of up to 16 SOD events which can be accessed using the scan tool. The history buffer captures sensor interactions with the driver and messages displayed in the DIC.

The SOD system consists of these main components

1. Left SOD Sensor
2. Right SOD Sensor
3. Door Modules (Driver and Passenger)
4. Left and Right Outside Rear View Mirror
5. Driver Information Center (DIC) and/or Navigation Radio

The SOD system commands the DIC to display the following messages to alert the driver of a system concern or status information

1. SERVICE SIDE BLIND ZONE ALERT SYSTEM
2. SIDE BLIND ZONE ALERT SYSTEM OFF
3. CLEAN SIDE BLIND ZONE ALERT SYSTEM

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Connector Repairs
• Control Module References
• Diagnostic Repair Verification
• Information Center Telltale Assembly Replacement
• Headlamp Switch Replacement
• Checking Aftermarket Accessories
• Power Mirror Replacement
• Rear Compartment Side Trim Replacement - Right Side
• Front Bumper Fascia Replacement
• Fastener Notice
• DTC B0954, B0955, B0956, or B0957
• Object Detection Description and Operation (VDAAW)
• Object Detection Description and Operation (SOD)