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For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Body Rear End 🢒 Rear Compartment Lid Release Inoperative

Rear Compartment Lid Release Inoperative From RFA Trans/IP Switch

Step

Action

Value(s)

Yes

No

DEFINITION: Use this chart if the rear compartment lid release does not operate from the keyless entry transmitter or from the IP-mounted lid release switch.

1

Did you perform the Rear Compartment Lid Release System Check?

--

Go to Step 2

Go to Rear Compartment Lid Release System Check

2

Inspect the TRK REL fuse in the rear fuse block.

Is the fuse OK?

--

Go to Step 4

Go to Step 3

3

Locate and repair the short to ground in the TRK REL fuse circuit.

Is the repair complete?

--

Go to Step 18

--

4
  1. Place the gear selector in the PARK position.
  2. Set the valet switch to UNLOCK.
  3. Remove the rear compartment lid release relay.
  4. Connect a J 39200 digital multimeter (DMM) between the following locations:
    5. • The relay terminal 86 and ground
    • The relay terminal 30 and ground

Is the measured voltage within the specified range at both terminals?

10-15 V

Go to Step 6

Go to Step 5

5

Replace the rear junction block.

Is the repair complete?

--

Go to Step 18

--

6
  1. Connect a DMM between the following terminals:Rear Compartment Lid Release Relay terminal 86 and terminal 85.
  2. Press the rear compartment lid release button on the keyless entry transmitter.

Is the measured voltage within the specified range?

10-15 V

Go to Step 7

Go to Step 14

7

Momentarily connect a fused jumper between the following locations:

Relay terminal 30

Relay terminal 87

Does the rear compartment lid open?

--

Go to Step 8

Go to Step 9

8
  1. Inspect the rear compartment lid release relay for poor terminal contact.
  2. If the contact is OK, replace the rear compartment lid release relay.

Is the repair complete?

--

Go to Step 18

--

9
  1. Leave the fused jumper in place across the following terminals:Terminal 30 and Terminal 87
  2. Disconnect the rear compartment lid release actuator connector.
  3. Connect a DMM between the actuator connector terminal A and ground.

Is the measured voltage within the specified range?

10-15 V

Go to Step 11

Go to Step 10

10

Repair the open in CKT 56 (BLK/WHT).

Is the repair complete?

--

Go to Step 18

--

11
  1. Remove the fused jumper from the rear compartment lid release relay.
  2. Use a DMM in order to measure the resistance between the rear compartment lid release actuator connector terminal B and ground.

Is the resistance less than the specified value?

5 ohms

Go to Step 12

Go to Step 13

12
  1. Inspect the rear compartment lid release actuator connector for poor terminal contact.
  2. If the contact is OK, replace the actuator. Refer to Rear Compartment Lid Latch Replacement .

Is the repair complete?

--

Go to Step 18

--

13

Repair the open in CKT 650 (BLK).

Is the repair complete?

--

Go to Step 18

--

14
  1. Connect a scan tool to the data link connector (DLC).
  2. Select the RFA special functions menu.
  3. Select output control.
  4. Select the rear compartment lid release.
  5. Using the scan tool, command the rear compartment lid release output.

Does the rear compartment lid release on command?

--

Go to Step 17

Go to Step 15

15

Inspect the CKT 1344 (LT BLU) for an open.

Is the circuit OK?

--

Go to Step 17

Go to Step 16

16

Repair the open in CKT 1344 (LT BLU).

Is the repair complete?

--

Go to Step 18

--

17

Replace the remote function actuator (RFA) module. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Step 18

--

18
  1. Ensure that any of the components removed during diagnosis are installed in place.
  2. Ensure that all of the connectors are connected.
  3. Repeat the system check. Refer to Rear Compartment Lid Release System Check .

Is the system check complete?

--

System OK

--

Rear Compartment Lid Release Inoperative From IP Switch

Step

Action

Value(s)

Yes

No

DEFINITION: Use this chart if the following conditions exist:

    • The rear compartment lid release does not operate from the IP-mounted lid release switch.
    • The rear compartment lid release operates normally from the keyless entry transmitter.

1

Did you perform the Rear Compartment Lid Release System Check?

--

Go to Step 2

Go to Rear Compartment Lid Release System Check

2

Verify that the lid release valet lockout feature is set to UNLOCK as follows:

  1. Insert the ignition key into the rear compartment lid release switch (mounted on the IP).
  2. Turn the key to the UNLOCK position.

Was the valet lockout set to UNLOCK?

--

Go to Step 3

Go to Rear Compartment Lid Release System Check

3
  1. Connect a scan tool to the data link connector (DLC).
  2. Select the body control module (SBM).
  3. Using the BCM data list inputs function on the scan tool, observe the state of the rear compartment lid release switch input.

Is the input ON when the rear compartment lid release button is pressed and OFF when the button is released?

--

Go to Step 10

Go to Step 4

4
  1. Disconnect the rear compartment lid release switch connector.
  2. Using a J 39200 digital multimeter (DMM) set to ohms scale, measure the resistance between the switch connector terminal A and ground.

Is the measured resistance less than the specified value?

5 ohms

Go to Step 6

Go to Step 5

5

Repair the open CKT 450 (BLK).

Is the repair complete?

--

Go to Step 11

--

6
  1. Connect a jumper across the rear compartment lid release switch connector terminals A and B.
  2. Using the BCM data list inputs function on the scan tool, observe the state of the rear compartment lid release switch input.

Is the input ON with the jumper in place and OFF when the jumper is removed?

--

Go to Step 7

Go to Step 8

7
  1. Inspect the rear compartment lid release switch connector for poor terminal contact.
  2. If the contact is OK, replace the rear compartment lid release switch. Refer to Fuel/Rear Compartment Release Switch Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Step 11

--

8

Test CKT 1576 (BLK) for an open.

Is the circuit OK?

--

Go to Step 10

Go to Step 9

9

Repair the open in CKT 1576 (BLK).

Is the repair complete?

--

Go to Step 11

--

10
  1. Inspect the body control module (SBM) connectors for poor terminal contact.
  2. If the contact is OK, replace the body control module. Refer to Body Control Module Replacement and Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Is the repair complete?

--

Go to Step 11

--

11
  1. Ensure that any of the components removed during diagnosis are installed in place.
  2. Ensure that all of the connectors are connected.
  3. Repeat the system check. Refer to Rear Compartment Lid Release System Check .

Is the system check complete?

--

System OK

--