I have a 2000 Buick LeSabre and the radio wont shut off when I open the driver's side door
do the power windows keep working too. . , Retained Accessory Power (RAP) .
Retained accessory power (RAP) is a standard feature. RAP allows the radio, power windows, and if equipped, power sunroof and cellular telephone to operate for approximately 10 minutes after the ignition switch has been turned to OFF, or until a passenger compartment door is opened.
The dash integration module (DIM) monitors and determines the ignition switch status (OFF, ACCESSORY, etc.). When the DIM determines that the ignition switch has been turned to the OFF position, the DIM sends a class 2 serial data message to the radio, drivers door module (DDM), rear integration module (RIM) and cellular telephone module (if equipped) in order to enable the RAP. After approximately 10 minutes the DIM sends another class 2 serial data message in order to disable the RAP.
The DIM receives door status (OPEN, CLOSED) from the DDM by a class 2 serial data line message. When the DIM determines that a passenger compartment door has been opened, the DIM sends out a class 2 serial data message in order to disable the RAP, regardless of the elapsed time.
2000 Buick LeSabre ' LeSabre (VIN H) Service Manual ' Body and Accessories ' Retained Accessory Power ' Diagnostic Information and Procedures ' Document ID: 475077
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Retained Accessory Power (RAP) On After Timeout
Step
Action
Value(s)
Yes
No
1
Did you perform the Retained Accessory Power (RAP) Diagnostic System Check?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Retained Accessory Power
2
Install a scan tool.
Close all of the doors.
Turn ON the ignition, with the engine OFF.
Wait 5 seconds, then turn OFF the ignition.
Wait 10 minutes.
Observe the dash integration module (DIM) ignition switch status.
Does the ignition switch status indicate OFF?
--
YES - Go to Step 3
NO - Go to DTC B1422 Device Power Moding Malfunction
Observe the RAP Output parameter in the rear integration module (RIM) data list.
Does the RAP Output indicate OFF?
--
YES - Go to Step 4
NO - Go to Step 10
4
Turn ON the ignition, with the engine OFF.
Using the scan tool, command the RAP relay ON and OFF.
Does the RAP relay turn ON and OFF with each command?
--
YES - Go to Step 8
NO - Go to Step 5
5
Connect a test lamp between the control circuit of the RAP relay and the coil side feed circuit of the RAP relay.
Using the scan tool, command the RAP relay ON and OFF.
Does the test lamp turn ON and OFF with each command?
--
YES - Go to Step 8
NO - Go to Step 6
6
Does the test lamp remain illuminated with each command?
--
YES - Go to Step 7
NO - Go to Step 10
7
Test the control circuit of the RAP relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
YES - Go to Step 13
NO - Go to Step 10
8
Test the load output circuit of the RAP relay for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
YES - Go to Step 13
NO - Go to Step 9
9
Inspect for poor connections/terminal tension at the RAP relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
YES - Go to Step 13
NO - Go to Step 11
10
Inspect for poor connections/terminal tension at the harness connector of the RIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 13
Go to Step 12
11
Replace the RAP relay.
Did you complete the replacement?
--
Go to Step 13
--
12
Replace the RIM. Refer to Rear Integration Body Control Module Replacement in Body Control System.
Did you complete the replacement?
--
Go to Step 13
--
13
Operate the system in order to verify the repair.
Did you correct the condition?
--
System OK
Go to Step 1
Without testing using the above factory diagnostic test proceduces , i would probably guess the rap relay has stuck contacts inside .