Rear Parking Assist System Buick Rendezvous I

Fastener Tightening Specifications

Fastener Tightening Specifications

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Rear Parking Assist Connector End Views

Object Sensor Connector End - LR Corner Connector Part Information 15324398 3-Way F Quadlock Micro-Pack, Sealed (BLK) Pin Wire Color Circuit No. Function 1 YEL 2375 LR Corner Object Sensor Signal 2 GRY 2379 Object Sensor Low Reference 3 DK BLU 2374 Object Sensor Supply Voltage

Object Sensor Connector End - LR Middle Connector Part Information 15324398 3-Way F Quadlock Micro-Pack, Sealed (BLK) Pin Wire Color Circuit No. Function 1 ORN 2376 LR Middle Object Sensor Signal 2 GRY 2379 Object Sensor Low Reference 3 DK BLU 2374 Object Sensor Supply Voltage

Object Sensor Connector End - RR Corner Connector Part Information 15324398 3-Way F Quadlock Micro-Pack, Sealed (BLK) Pin Wire Color Circuit No. Function 1 RED 2378 RR Corner Object Sensor Signal 2 GRY 2379 Object Sensor Low Reference 3 DK BLU 2374 Object Sensor Supply Voltage

Object Sensor - RR Middle Connector Part Information 15324398 3-Way F Quadlock Micro-Pack, Sealed (BLK) Pin Wire Color Circuit No. Function 1 DK GRN 2377 RR Middle Object Sensor Signal 2 GRY 2379 Object Sensor Low Reference 3 DK BLU 2374 Object Sensor Supply Voltage

Rear Parking Assist (RPA) Module Connector End Connector Part Information 12124957 26-Way F (BLK) Pin Wire Color Circuit No. Function 1 YEL 2375 LR Corner Object Sensor Signal 2 ORN 2376 LR Middle Object Sensor Signal 3 DK GRN 2377 RR Middle Object Sensor Signal 4 RED 2378 RR Corner Object Sensor Signal 5 DK BLU 2374 Object Sensor Supply Voltage 6 GRY 2379 Object Sensor Low Reference 7 - 11 - - Not Used 12 BLK 850 Ground 13 PNK 1439 Ignition 1 Voltage 14 BRN 9380 Rear Parking Assist Disable Switch Input 15 LT GRN 24 Backup Lamp Supply Voltage 16 LT GRN 2525 Rear Parking Assist Diagnostic Input 17 - - Not Used 18 DK GRN 389 Vehicle Speed Signal 19 - 21 - - Not Used 22 LT BLU 2380 Rear Parking Assist Chime Signal 23 WHT 2370 Telltale Assembly Supply Voltage 24 GRY 2373 Red Indicator Control 25 DK BLU 2372 Center Amber Indicator Control 26 ORN 2371 Left Amber Indicator Control

Rear Parking Assist (RPA) Display Connector End Connector Part Information 12045813 4-Way F Metri-Pack 150 Series (NAT) Pin Wire Color Circuit No. Function A WHT 2370 Telltale Assembly Supply Voltage B ORN 2371 Left Amber Indicator Control C DK BLU 2372 Center Amber Indicator Control D GRY 2373 Red Indicator Control

Diagnostic Starting Point - Ultrasonic Rear Parking Assist

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Ultrasonic Rear Parking Assist in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic Trouble Code (DTC) Displaying

This vehicle is equipped with an on-board diagnostic display feature capable of displaying diagnostic trouble codes using the 3 indicators on the rear parking assist display. After the bulb check has been completed, the red outside indicator flashes to indicate a malfunction with the system. The module disables operation of the URPA system under this condition.

In order to enter the diagnostic mode, complete the following actions

1. With the ignition turned OFF short the rear parking assist diagnostic connector to ground while the vehicle is in PARK. Refer to «Rear Parking Assist Component Views»(/buick/rendezvous/i-2001-2007/remont/collisionavoidance/#rear-parking-assist-system) for the location of the rear parking assist diagnostic connector.
2. Turn the ignition ON.
3. Place foot on the brake.
4. Shift the vehicle into REVERSE within 5 seconds. If the vehicle is not shifted into reverse within 5 seconds after turning the ignition ON, the diagnostic mode will still be initiated. However, a reverse input wiring fault will be registered as sequence #7 as shown in the Diagnostic Indicator table below. Refer to «Diagnostic Trouble Code (DTC) Clearing»(/buick/rendezvous/i-2001-2007/remont/collisionavoidance/#rear-parking-assist-system__diagnostic-trouble-code-dtc-clearing) for the specific steps on how to clear diagnostic trouble codes. After the reverse input wiring code is cleared, repeat the diagnostic trouble code displaying steps in order to enter the diagnostic mode.

When the diagnostic mode is first entered, the rear parking assist display displays the amber outside indicator and the red outside indicator. Then the indicators on the rear parking assist display will display one or more of the sequences in the table below to indicate where the fault exists within the rear parking assist system. Refer to Diagnostic Trouble Code (DTC) Clearing for the specific steps on how to clear diagnostic trouble codes.

Diagnostic Indicators

Diagnostic Trouble Code (DTC) Clearing

The rear parking assist diagnostic sequences may be cleared in one of the following ways

Vehicle Moving

1. Drive the vehicle forward at least 24 km/h (15 mph).
2. Stop the vehicle.
3. Turn the ignition OFF.

Vehicle Stopped

1. Turn the ignition ON.
2. Place foot on the brake.
3. Shift the vehicle into REVERSE within 5 seconds.
4. Turn the ignition OFF.

Symptoms - Ultrasonic Rear Parking Assist

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the easily accessible or visible system components for obvious damage or for 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 in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Rear Parking Assist Malfunction»(/buick/rendezvous/i-2001-2007/remont/collisionavoidance/#rear-parking-assist-system)
2. «Rear Parking Assist Inoperative - Red Indicator Flashes»(/buick/rendezvous/i-2001-2007/remont/collisionavoidance/#rear-parking-assist-system)

Diagnostic Aids

Before performing this procedure, ensure that the following conditions are met

1. The vehicle park brake is SET.
2. The rear parking assist (RPA) disable switch is ON.

Rear Parking Assist Malfunction

Before performing this procedure, ensure that the following conditions are met

1. The vehicle park brake is SET.
2. The rear parking assist (RPA) disable switch is ON.

Rear Parking Assist Inoperative - Red Indicator Flashes

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1. Position your fingers between the headliner and the information center telltale assembly bezel and gently pull down to release the display bezel retainers.
2. Use a small flat-bladed tool to release the locking tab at the rear of the telltale assembly.
3. Tilt the information center telltale assembly down and pull down to remove.
4. Disconnect the electrical connector from the information center telltale assembly.

Installation Procedure

1. Connect the electrical connector to the information center telltale assembly.
2. Position the information center telltale assembly into the headliner until locking tab locks into position. It may be necessary to rock the display into position.
3. Install bezel by pressing into place until the locking tabs are fully seated.

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1. Remove rear bumper fascia. Refer to «Fascia Replacement - Rear Bumper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#bumper-system) or «Fascia Replacement - Rear Bumper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#bumper-system) in Bumpers.
2. Disconnect electrical from the rear object sensor.
3. Lift the locking tabs on the housing (4) and remove the rear object sensor (1).
4. Squeeze the spring (1) and remove it from the housing (2).
5. Release the tabs on the housing and remove.
6. Remove the rear object sensor bezel by pushing it through the fascia.

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1. Paint the new rear object sensor. Refer to «Basecoat/Clearcoat Paint Systems»(/buick/rendezvous/i-2001-2007/remont/paintcoatings/#paint-coatings__basecoatclearcoat-paint-systems) in Paints/Coatings.
2. Check the paint thickness to ensure it does not exceed 6 mils using a paint thickness gage suitable for non-ferrous metals. Refer to «Paint Gages»(/buick/rendezvous/i-2001-2007/remont/paintcoatings/#paint-coatings__paint-gages) in Paints/Coatings.
3. Align the keyhole (2) with the key (1) and press the rear object sensor bezel flush to the fascia.
4. Install the housing to the cutouts on the bezel through the back side of the fascia. IMPORTANT: The spring keys must be on the top and bottom of the housing.
5. Install the spring (1) to the housing (2).
6. Install the decoupling ring (2) to the sensor (1).
7. Insert the sensor into the housing (4) with the connector pointing toward the passenger side of the fascia. Press the sensor tabs into the cutouts on the housing (4).
8. Connect the electrical connector to the rear object sensor.
9. Install the rear bumper fascia. Refer to «Fascia Replacement - Rear Bumper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#bumper-system) or «Fascia Replacement - Rear Bumper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#bumper-system) in Bumpers.

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1. Roll the second row seats forward.
2. Fold the third row seat down.
3. Open the guide loop covers from the left rear seat belt.
4. Remove the guide loop bolts from the second and from the third row seat belts.
5. Remove the upper trim from the second and third row pillars.
6. Remove the storage compartment. Refer to «Storage Compartment Replacement - Rear (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Remove the rear liftgate sill.
8. Remove the cargo tie-down loops from the rear quarter trim.
9. Pull the top of the quarter trim loose to gain access to the bolts that secure the rear object alarm detection module.
10. Remove the bolts.
11. Remove the electrical connector to the module.
12. Remove the rear object alarm detection module.

1. Install the rear object alarm detection module.
2. Install the electrical connector to the module. NOTE: Refer to Fastener Notice in Cautions and Notices.
3. Install the bolts that secure the rear object alarm detection module. Tighten: Tighten the bolts to 10 N.m (89 lb in).
4. Secure the top of the quarter trim over the bolts.
5. Install the cargo tie-down loops from the rear quarter trim.
6. Install the rear liftgate sill.
7. Install the storage compartment. Refer to «Storage Compartment Replacement - Rear (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Install the upper trim from the second and third row pillars.
9. Install the guide loop bolts from the second and from the third row seat belts.
10. Close the guide loop covers to the left rear seat belt.
11. Return the second and the third row seats to their upright positions.

Object Detection Description and Operation

The ultrasonic rear parking assist (URPA) can help a driver determine how close an object is to the rear bumper within a defined rearward field of view.

The rear parking assist display is located inside to the rear of the roof panel headliner assembly. Refer to Rear Parking Assist Component Views for the location of the display. The display has 3 indicators that can be seen through the rearview mirror or by turning around when seated in the driver seat. The URPA is equipped with a switch located in the center console below the heater controls that can be used to disable the system.

When the ignition is ON and the vehicle is placed into reverse, the URPA performs a bulb check. During the bulb check, the 3 indicators on the display illuminate for approximately 2 seconds to indicate that the system is working. The URPA 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 km/h (3 mph). At speeds greater than 5 km/h (3 mph), the URPA is disabled. The red indicator flashes to warn the driver that the URPA is disabled.

The URPA senses how close the vehicle is to an object. The distance is determined by the four ultrasonic sensors located on the rear bumper. When the system detects an object, one of the following will occur

1. If the object is less than 0.3 m (11 in) away from the rear of the vehicle, the amber outside, amber middle, and the red outside indicators flash and the chime sounds continuously.
2. If the object is less than 0.3 m to 0.5 m (11 to 20 in) away from the rear of the vehicle, the amber outside, amber middle, and the red outside indicators are on and the chime sounds continuously.
3. If the object is 0.5 to 1.0 m (20 to 40 in) away from the rear of the vehicle, the amber outside, and the amber middle indicators are on.
4. If the object is 1.0 to 1.5 m (40 in to 5 ft) away from the rear of the vehicle, the amber outside indicator is on and the chime sounds one time on the first detection of an object.

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

If the red indicator flashes continuously the on-board diagnostic needs to be entered to determine if a malfunction is present. Refer to Diagnostic Trouble Code (DTC) Displaying .

See also:
• Checking Aftermarket Accessories
• Testing for Intermittent Conditions and Poor Connections
• Body Control System Connector End Views
• Powertrain Control Module (PCM) Connector End Views
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Instrument Panel (I/P) Multifunction Switch Assembly Replacement
• Fascia Replacement - Rear Bumper (Aztek)
• Basecoat/Clearcoat Paint Systems
• Paint Gages
• Storage Compartment Replacement - Rear (Rendezvous)
• Symptoms - Ultrasonic Rear Parking Assist
• Rear Parking Assist Component Views
• Diagnostic Trouble Code (DTC) Clearing
• Object Detection Description and Operation
• Rear Parking Assist Connector End Views
• Diagnostic Trouble Code (DTC) Displaying