Shift Interlock System Buick Rendezvous I

Scheme 95

Scheme 96

Scheme 97

Scheme 98

Automatic Transmission Shift Lock Control Connector End Views

Automatic Transmission Floor Shift Control Connector End - Pontiac Connector Part Information 12064762 6-Way F Metri-Pack 150 Series (GRY) Pin Wire Color Circuit No. Function A TAN/WHT 816 A/T Shift Lock Solenoid Control B ORN/BLK 1786 Ignition 1 Voltage C LT BLU 1134 Ignition Lock Cylinder Control Actuator Signal D - - Not Used E DK GRN/ WHT 1135 A/T Shift Lock Control Solenoid Supply Voltage F PPL 1600 Ignition 0 Voltage

A/T Shift Lock Control Solenoid Connector End - Buick Connector Part Information 12052832 2-Way F Metri-Pack 150 (BLK) Pin Wire Color Circuit No. Function A DK GRN/WHT 1135 A/T Shift Lock Control Solenoid Supply Voltage B BLK 816 A/T Shift Lock Control Solenoid Control

Diagnostic Starting Point - Automatic Transmission Shift Lock Control

Begin the system diagnosis with the Diagnostic System Check - Automatic Transmission Shift Lock Control . The Diagnostic System Check will provide the following information

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

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

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
2. 5: The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.

Diagnostic System Check - Automatic Transmission Shift Lock Control

Circuit Description

The body control module (BCM) controls the automatic transmission shift lock control solenoid ground circuit and monitors the voltage of the ground control circuit.

Conditions for Running the DTC

The control ground circuit of the automatic transmission shift lock control solenoid must be OFF.

Conditions for Setting the DTC

1. The body control module (BCM) detects the controlled ground circuit voltage is approximately equal to ground in the OFF state.
2. The condition above must be present for more than 0.3 seconds.
3. This DTC will be set after 20 seconds due to possible false failures.

Action Taken When the DTC Sets

The BCM stores DTC B2712 in memory.

Conditions for Clearing the DTC

1. A current DTC B2712 will clear if the short to ground or open in the controlled ground circuit of the automatic transmission shift lock control solenoid is no longer detected by the body control module (BCM).
2. A history DTC B2712 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
3. A scan tool may be used to clear the DTC.

Diagnostic Aids

1. If DTC B2712 is a history DTC, the fault may be intermittent. Refer to «Testing for Intermittent Conditions and Poor Connections»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor) in Wiring Systems.
2. The following conditions may cause an intermittent malfunction to occur: An intermittent short to ground or open in the controlled ground circuit of the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid coil is intermittently shorted to ground internally. The body control module (BCM) is intermittently shorted to ground internally.

DTC B2712

The body control module (BCM) controls the automatic transmission shift lock control solenoid ground circuit and monitors the voltage of the ground control circuit.

The controlled ground circuit of the automatic transmission shift lock control solenoid must be ON.

1. The body control module (BCM) detects the controlled ground circuit voltage is approximately equal to battery voltage in the ON state.
2. The condition above must be present for more than 0.3 seconds.
3. This DTC will be set after 20 seconds due to possible false failures.

The BCM stores DTC B2713 in memory.

1. The body control module (BCM) determines that the controlled ground circuit of the automatic transmission shift lock control solenoid is no longer shorted to battery voltage.
2. A history DTC B2713 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
3. A scan tool may be used to clear the DTC.

1. If DTC B2713 is a history DTC, the fault may be intermittent. Refer to «Testing for Intermittent Conditions and Poor Connections»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor) in Wiring Systems.
2. The following conditions may cause an intermittent malfunction to occur: An intermittent short to battery voltage in the controlled ground circuit of the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid coil is shorted to battery voltage internally. The body control module (BCM) is shorted to battery internally.

DTC B2713

Symptoms - Automatic Transmission Shift Lock Control

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the automatic transmission shift lock control 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 conditions which could cause the symptom.

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. «Park Lock Solenoid Inoperative»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#shift-interlock-system__park-lock-solenoid-inoperative)
2. «Shift Lever Does Not Move with Brake Pedal Depressed (Buick)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#shift-interlock-system__shift-lever-does-not-move-with) or «Shift Lever Does Not Move with Brake Pedal Depressed (Pontiac)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#shift-interlock-system__shift-lever-does-not-move-with)
3. «Shift Lever Can Be Moved without Brake Pedal Depressed (Buick)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#shift-interlock-system__shift-lever-can-be-moved-without) or «Shift Lever Can Be Moved without Brake Pedal Depressed (Pontiac)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#shift-interlock-system__shift-lever-can-be-moved-without)

Park Lock Solenoid Inoperative

Park Lock Solenoid Inoperative

Shift Lever Does Not Move with Brake Pedal Depressed (Buick)

Shift Lever Does Not Move with Brake Pedal Depressed (Buick)

Shift Lever Does Not Move with Brake Pedal Depressed (Pontiac)

Shift Lever Does Not Move with Brake Pedal Depressed (Pontiac)

Shift Lever Can Be Moved without Brake Pedal Depressed (Buick)

Shift Lever Can Be Moved without Brake Pedal Depressed (Buick)

Shift Lever Can Be Moved without Brake Pedal Depressed (Pontiac)

Shift Lever Can Be Moved without Brake Pedal Depressed (Pontiac)

Removal Procedure

1. Remove the actuator screws (3).
2. Remove the actuator assembly (2) from the shift assembly (1).

Installation Procedure

1. Install the actuator assembly (2) to the shift assembly (1).
2. Install the actuator screws (3). Tighten: Tighten the actuator screws to 2 N.m (18 lb in).

Automatic Transmission Shift Lock Control System

The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components

1. The automatic transmission shift lock control solenoid
2. The automatic transmission shift lock control switch
3. The body control module (BCM)

With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. When the body control module (BCM) receives a class 2 message from the powertrain control module indicating the transmission is in the park position the BCM grounds the automatic transmission shift lock solenoid control circuit. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.

Park Lock Solenoid

Vehicles equipped with a floor shift have a park lock solenoid. The park lock solenoid is a safety device that prevents an inadvertent shift out of PARK when the key is in the OFF position. The key must be in the RUN position to release the park lock solenoid.

1. The system consists of the park lock solenoid.
2. The body control module (BCM)

With the ignition in the ON position, voltage is supplied to the park lock solenoid. The park lock solenoid energizes through a controlled ground at the body control module. When the body control module (BCM) receives a class 2 message from the powertrain control module indicating the transmission is in the park position the BCM grounds the control circuit. With the ignition in the OFF or ACCY position the park lock solenoid de-energizes and mechanically locks the shift lever in the park position.

See also:
• Scan Tool Does Not Power Up
• Power Mode Mismatch
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Testing for Intermittent Conditions and Poor Connections
• Checking Aftermarket Accessories
• Connector Repairs
• Circuit Testing
• Wiring Repairs
• Floor Shift Control Replacement
• Stop Lamp Switch Adjustment
• Stop Lamp Switch Replacement
• Fastener Notice
• Diagnostic System Check - Automatic Transmission Shift Lock Control
• Symptoms - Automatic Transmission Shift Lock Control
• Automatic Transmission Shift Lock Control Connector End Views
• Park Lock Solenoid Inoperative
• Shift Lever Does Not Move with Brake Pedal Depressed (Buick)
• Shift Lever Can Be Moved without Brake Pedal Depressed (Buick)