Object Detection System: Other Chevrolet Tahoe III

Conditions for Clearing

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

Reference Information

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM replacement, setup, and programming

Circuit/System Verification

1. Verify that DTC B1405 is not set. If DTC is set, refer to «DTC B1405»(ref-364468-S23933314752010063000000) .
2. Verify that DTC B0958 3A, DTC B0959 3A, DTC B0960 3A, or DTC B0961 3A is not set. If DTC is set, replace the appropriate object alarm sensor.
3. Transmission in REVERSE, verify the parking assist system is enabled and one audible beep sounds.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(ref-364468-S20413727912010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for object alarm module replacement, setup, and programming

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

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Park Assist Switch parameter while cycling the parking assist disable switch. The parameter should change between Active and Inactive.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (Except Cadillac)»(ref-364482-S10999316362010063000000) or «Accessory Switch Replacement (Cadillac)»(ref-364482-S22327566222010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for Object Alarm Module replacement, setup, and programming.

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

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Park Assist Switch LED parameter while pressing and releasing the park assist disable switch. The parameter should change between On and Off.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Alarm Module Switch Replacement (Escalade)»(ref-364468-S01144851092010063000000) or «Rear Object Alarm Module Switch Replacement (Tahoe/Yukon)»(ref-364468-S07246839452010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for Object Alarm Module replacement, setup, and programming.

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

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

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 «Object Alarm Module Programming and Setup»(ref-364489-S42444439652010063000000) . 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.

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

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Object Sensor Replacement»(ref-364468-S20413727912010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for rear object alarm module replacement, setup and programming

Symptoms - Object Detection

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

Intermittent

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

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify the parking assist system is enabled through the DIC. If the parking assist system is manually disabled, enable the system. Refer to the vehicle owners manual for instructions on enabling the system.
2. Observe the scan tool Park Assist Switch parameter while pressing and releasing the park assist disable switch. The parameter should change between Active and Inactive. If the parameter does not cycle between the specified values, refer to Park Assist Disable Switch Circuit Malfunction.
3. Observe the scan tool Park Assist Switch LED parameter while pressing and releasing the park assist disable switch. The parameter should change between On and Off. If the parameter does not cycle between the specified values, refer to Park Assist Disable LED Circuit Malfunction.
4. Transmission in REVERSE, verify one audible beep sounds and the scan tool Park Assist System Status parameter is Enable. NOTE: After completing the next step the vehicle might need to be driven in the forward direction at speed greater than 40 km/h (25 mph). If not the specified values, refer to Diagnostic Aids and the scan tool Park Assist Disable History parameters to determine the cause of the inhibit.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (Except Cadillac)»(ref-364482-S10999316362010063000000) or «Accessory Switch Replacement (Cadillac)»(ref-364482-S22327566222010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for object alarm module replacement, setup, and programming.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

1. Inspect the rearview camera and verify there are no debris on the lens and that the bezel or bezel seal is not damaged. If debris are found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Engine running, vehicle in PARK, verify the backup lamps are off. If the backup lamps are illuminated, refer to Rearview Camera System Always On.
3. Park brake applied, transmission in REVERSE, engine running, verify a clear rear vision image is displayed on the inside rearview mirror. If a clear image is not displayed, refer to Rearview Camera System Does Not Display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rearview Camera Replacement (Endgate)»(ref-364468-S02850152652010063000000) or «Rearview Camera Replacement (Liftgate)»(ref-364468-S09754110622010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for inside rearview mirror replacement, setup, and programming

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information

1. Inspect the rearview camera and verify there is no debris on the lens and that the bezel or bezel seal is not damaged. If debris is found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Engine running, vehicle in PARK, verify the backup lamps are off. If the backup lamps are illuminated, refer to Rearview Camera System Always On.
3. Vehicle in REVERSE, engine running, verify a clear rear vision image is displayed on the radio. If a clear image is not displayed, refer to Rearview Camera System Does Not Display.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rearview Camera Replacement (Endgate)»(ref-364468-S02850152652010063000000) or «Rearview Camera Replacement (Liftgate)»(ref-364468-S09754110622010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for radio replacement, setup, and programming

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (UFT) or Object Detection Description and Operation (UVC) or Object Detection Description and Operation (UD7)

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify the scan tool can communicate with right side object sensor. If the scan tool can not communicate with the right side object sensor, refer to Right Side Object Sensor Malfunction
2. Verify the scan tool can communicate with left side object sensor. If the scan tool can not communicate with the left side object sensor, refer to Left Side Object Sensor Malfunction
3. Ignition ON, verify that the side blind zone alert system indicators located in the outside rearview mirrors briefly turn ON and then turn OFF during the system self test. If both indicators do not briefly illuminate during the system self test, the side blind zone alert system has been disabled. Refer to Diagnostic Aids. If only one indicator does not briefly illuminate during the self test, refer to Side Object Indicator Malfunction.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Power Mirror Replacement»(ref-364480-S26460480682010063000000)
2. «Control Module References»(ref-364489-S22329914082010063000000) for the driver door module, front passenger door module, side object sensor replacement, setup, and programming

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Side Object Sensors

The side object sensors are each located behind the rear fascia, positioned so that the sensor is pointing out toward the opposite lane. Each sensor is supplied B+ and ground. The right sensor receives an additional ground. Both sensors communicate independently on the serial data line. The serial data enters the right sensor in a pass-thru configuration, that connects to the left sensor. The scan tool is able to individually communicate with each sensor.

When a vehicle or object is detected by a side object sensor, a serial data message is sent to the appropriate door module to illuminate the indicator located in the outside rearview mirror.

Door Modules

The driver and passenger door modules receive serial data messages from the side object sensors. When a message is received indicating that a vehicle or object is in the blind spot, the appropriate door module will apply voltage to the indicator located in the outside rearview mirror, illuminating the indicator. The door module provides a continuous low reference circuit for the indicator.

Outside Rearview Mirror

The outside rearview mirrors each contain an indicator that is controlled by the appropriate door module. This indicator is illuminated when a vehicle or object is positioned in the vehicle's blind spot.

SIDE BLIND ZONE ALERT SYSTEM OFF

This message indicates that the system has been disabled through the DIC. Refer to the vehicle owners manual for instructions on how to set personalization options on the DIC.

SIDE BLIND ZONE SYSTEM UNAVAILABLE

This message indicates that the system has been disabled because the sensor is blocked or can otherwise not accurately detect vehicles or objects. Such instances may be mud, dirt, snow, ice, or slush build-up on the rear fascia, heavy rainfall, or excessive road spray.

SERVICE SIDE BLIND ZONE ALERT SYSTEM

This message indicates that the system requires service. When the message is displayed, the indicators will remain illuminated at all times, notifying the driver that the SBZA system should not be relied upon when changing lanes.

Object Alarm Module

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

Object Alarm Sensor

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

SERVICE PARK ASSIST

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

PARK ASSIST OFF

The PARK ASSIST OFF message is displayed in the DIC when the parking assist system is disabled manually using the parking assist disable switch.

PARK ASST BLOCKED SEE OWNERS MANUAL (Chevrolet and GMC)

The PARK ASST BLOCKED SEE OWNERS MANUAL message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system.

PARK ASSIST BLOCKED SEE OWNERS MANUAL (Cadillac)

The PARK ASSIST BLOCKED SEE OWNERS MANUAL message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system.