GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Park Avenue 🢒 Body and Accessories 🢒 Retained Accessory Power 🢒 Retained Accessory Power (RAP) Inoperative

Step

Action

Value(s)

Yes

No

1

Was the RAP System Check performed?

--

Go to Step 2

Go to Retained Accessory Power (RAP) System Check

2
  1. Close all of the passenger compartment doors.
  2. Connect a scan tool.
  3. Go to the RFA Special Functions.
  4. Go to Outputs for RAP.
  5. Cycle the RAP function ON and then OFF.

Do the RAP controlled components operate?

--

Go to Step 3

Go to Step 12

3
  1. Remove the RAP relay.
  2. Using a scan tool command the RAP system ON.
  3. Measure the resistance between terminal 86 and ground.

Is the resistance within the specified range?

0-5 ohms

Go to Step 5

Go to Step 4

4

Repair open or high resistance in CKT 707.

Is the repair complete?

--

Go to Retained Accessory Power (RAP) System Check

--

5
  1. Using the scan tool, command the RAP system OFF.
  2. Measure the voltage between terminal 85 of the RAP relay and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 7

Go to Step 6

6

Repair open in CKT 742.

Is the repair complete?

--

Go to Retained Accessory Power (RAP) System Check

--

7

Measure the voltage between terminal 87 and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 8

Go to Step 9

8
  1. Remove the RDO/PH fuse from the rear fuse block.
  2. Measure the resistance between terminal 30 of the RAP relay and the fuse terminal.

Is the resistance within the specified range?

0-5 ohms

Go to Step 10

Go to Step 9

9

Replace the rear fuse block.

Is the repair complete?

--

Go to Retained Accessory Power (RAP) System Check

--

10
  1. Remove the RAP relay
  2. Measure the resistance from terminal 30 and 87.

Is the resistance within the specified range?

OL

Go to Step 12

Go to Step 11

11

Replace the RAP relay.

Is the repair complete?

--

Go to Retained Accessory Power (RAP) System Check

--

12
  1. Disconnect the RFA connector.
  2. Connect a fused jumper between terminal 86 and a ground.
  3. Close all compartment doors.
  4. Cycle the ignition switch from RUN to OFF.

Do the RAP controlled components operate?

--

Go to Step 13

--

13

Replace the RFA module.

Is the repair complete?

--

Go to Retained Accessory Power (RAP) System Check

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