How do i get retained accessory power relay ?

not getting any comms through my obd2 scanner ?? What kind of scanner ? Full function one that can communicate with all the computers (modules) on the vehicle ? BCM ,IPC,HVAC etc.. Do you know how the electronics work on this vehicle , what happens when you turn the key to start?

Circuit Description (Key Start)
For ignition switch power modes refer to Body Control System Description and Operation in Computer/Integrating Systems. When the ignition switch is placed in the Start position a discrete 12 volts signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then supplies a class 2 message to the engine control module (ECM) / powertrain control module (PCM) notifying it that CRANK has been requested. At the same time the BCM is supplying 12 volts for the IGN 1 Relay / IGNITION MAIN PCM Relay closing it and supplying battery positive voltage for the CRANK Relay / STRTR Relay coil. The ECM/PCM verifies that the transmission is in Park or Neutral. If it is, the ECM/PCM grounds the control circuit of the CRANK Relay / STRTR Relay. When this occurs battery positive voltage is supplied through the switch side of the CRANK Relay / STRTR Relay to the S terminal of the starter solenoid.Do you know what power moding is ?

Power Mode Description and Operation

Power to many of this vehicle's circuits are controlled by the module that is designated the power mode master (PMM). This vehicles PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits.

Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs ignition 1, ignition 3 and crank to distinguish the correct power mode. Once the BCM has determined the power mode selected by the vehicle operator it will energize the Ignition relay, Run relay and retained accessory power (RAP) relay, depending on which power mode is selected.
Ignition 1 Relay
The relay uses a Hot At All Times B+ power source derived from the underhood electrical center. The ignition 1 relay supplies a power signal to the following circuits when the Run or Crank power mode is selected:
• AC clutch relay
• ABS STG angle sensor
• Antilock brake system (ABS) yaw sensor
• Auxiliary power drop connector
• Crank relay
• Cruse control switch
• Electronic brake control module (EBCM)
• Engine control module (ECM)
• Heating, ventilation, and air conditioning module (HVAC)
• Ignition control module (ICM)
• Instrument panel cluster (IPC)
• Sensing and diagnostic module (SDM)
• Transmission solenoid circuit

Retained Accessory Power (RAP) Relay
The RAP relay is energized when the Run or Accessory power mode has been selected. The relay uses a Hot At All Times B+ power source derived from the underhood electrical center. The B+ power source is protected by the 50 Amp BATT MAIN 2 fuse. The BCM also energizes the relay for 10 minutes after the vehicle operator transitions the ignition switch from Accessory to OFF or Run to OFF positions. The following circuits are controlled by the RAP relay:
• Power sunroof
• Power windows

Your best bet , take it to a qualified repair shop .

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 .

Could have a problem with (RAP) Retained Accessory Power.
Relay Control of Retained Accessory Power (RAP)
Retained accessory power (RAP) is a vehicle power mode that permits the operation of selected customer convenience items after the ignition switch is turned OFF. These selected items will remain in operation until a passenger compartment door is opened or until the RAP function timer reaches its shut-off limit.
When the RIM module is in the RAP function as described above, it closes the RAP relay. This provides power during the RAP period for the components supplied by the RAP relay.
The RIM module opens the RAP relay to end the RAP function when it ends the RAP function as outlined in the previous text.
© 2017 General Motors Corporation. All rights reserved.

The modules listed below all receive a RAP message from the dash integration module (DIM) module over the serial data circuits. The DIM module monitors the ignition switch position, battery condition and passenger compartment door status to determine whether RAP should be initiated. The DIM module then sends a message to the listed modules telling them that they are in RAP power mode. The modules then support the operation of the systems under their control as required by their RAP power mode strategy.
RAP will end when one of the following conditions are met:
• The DIM module receives an input as a serial data message from the driver door module (DDM) indicating the opening of a passenger compartment door.
• The DIM module receives a message from its internal timer indicating the end of the RAP period after 10 minutes.
• The DIM module detects a decrease in battery capacity below a prescribed limit.
• The transition from OFF to RUN/ON or ACC of the ignition switch.



The DIM module then sends a serial data message to the listed modules ending the RAP function.
The modules receiving serial data messages for RAP functions are:
• The driver door module (DDM)
• The radio
• The rear integration module (RIM)
• The vehicle communication interface module (VCIM)-Generation F1
• The vehicle interface unit (VIU)-Generation 2.6

The Rap relay could be bad (stuck contact's ) or one of the three module's that make up the body control system . Having the vehicle checked for DTC'S - diagnostic trouble codes should be the first step in diagnosing this type problem .

http://www.bbbind.com/free_tsb.html free wiring diagrams !
Left Front Power Window Switch
The battery voltage is applied from the WINDOWS circuit breaker through CKT 42 (RED) to the accessory time delay relay. The accessory time delay relay supplies voltage through CKT 70 (PNK) to the left front power window switch under the following conditions:
?€¢
The ignition is in the RUN position.

?€¢
The retained accessory power (RAP) is active.

When an UP switch on the left front power window switch is operated, the battery voltage is applied to the power window motor. The power window motor is grounded through the DOWN contacts of the left front power window switch to G204. The motor runs in order to drive the power window up. When a DOWN switch in the left front power window switch is operated, the battery voltage is applied to the power window motor in the opposite direction. The power window motor is grounded through the UP contacts in the left front power window switch to G204. The motor runs in order to drive the power window down.
Accessory Time Delay Relay
On the left front of the passenger compartment, taped in the body harness

Open the driver's side door and look om the side of the dashboard where the door hinges are

The relay is made into the switch and the power comes from the Body Control Module, there are 3 fuses in that circuit, a 50amp fuse link in the fuse box by the battery and 2 10amp fuses in postions #12 and #6 in the fuse box behind the left side of the dash. Hope this helps.

For the XL - The AMP is located on the drivers side, behind the left rear trim panel.

1. Remove the cargo shelf. 2. Tumble the third row seats to the cargo position. 3. Remove the left body side window rear garnish molding.4. 4. Remove the left body side window forward garnish molding. 5. Remove the liftgate sill plate. 6. Remove the left rear door sill panel. 7. Remove the lower seat belt anchor bolt. 8. Remove the auxiliary power outlet from the trim panel. Release the five screws that retain the rear quarter trim panel to the body. 9. Remove the rear quarter trim panel from the vehicle.

If you don't have the XL then the AMP is located on the passenger side.
1. Remove the screw that retains the trim panel to the body. 2. Remove the cargo net retaining knobs. 3. Remove the bolt that retains the seat belt upper guide to the body. 4. Remove the rear upper quarter trim panel from the vehicle. 5. Remove the cargo shade/cover. 6. Remove the inflator access panel. 7. Remove the right rear quarter upper trim panel. 8. Remove the liftgate sill plate. 9. Remove the right rear door sill panel. 10. Remove the lower seat belt anchor bolt. 11. Release the retaining clips that retain the trim panel to the body. 12. Partially remove the trim panel in order to remove the inflator switch from the inflator bezel. 13. Remove the auxiliary air outlet washer and retaining nut. 14. Feed the auxiliary air outlet through the inflator bezel. 15. Remove the inflator bezel from the trim panel. 16. Disconnect the the 12-volt power supply electrical connector. 17. Remove the 12-volt power supply. . 18. Remove the trim panel from the vehicle. 19. Disconnect the electrical connectors from the radio speaker amplifier. 20. Remove the 4 bolts that retain the radio speaker amplifier to the body. 21. Remove the radio speaker amplifier from the body.

Power is supplied to the Power windows and sunroof through the power window circuit breaker. That circuit breaker is supplied power through the RAP (retained accessory power) Relay, the RAP relay also supplies power to the radio. The RAP relay is also fuse protected by the RAP fuse in the under hood fuse block. The RAP relay is energized by the BCM body control module.

The RAP relay is responsible for the radio and windows working after the igntion is turned off.

The first place to check would be the RAP fuse in the under hood fuse block and then the RAP relay in the Body fuse block.

A list of the BODY relay block located on the left side of the dash to the right of the interior fuse block is below:

(1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay(1) Park Lamp Relay
(2) Courtesy Lamp Relay
(3) Retained Accessory Power (RAP) Relay
(4) Power Seats Circuit Breaker
(5) Power Windows Circuit Breaker
(6) Inadvertent Power Relay
(7) Door Lock Relay
(8) Headlamp Ground Relay
(9) Driver Door Unlock Relay
(10) Door Unlock Relay
(1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay (1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Take a test light or volt meter and unplug electrical connector at high beam light and with key on and headlight switch on (highbeem on) you should have power at dark green and white wire. If not then check 15 amp headlamp fuse. There is one for left and one for right. They are located at underhood fuse block (left fenderwell).Lift cover and look in cover for description. If there is power at headlight green/ wt wire then check for ground at the other wire black and purple.If no ground could have bad headlamp ground relay located at body relay box (left side of dash) or the ground connection for this relay a black wire located at left side of dash. Joe ASE Master Tec

The rear temp blend door is stuck in the cold position ,very common problem on vehicles with rear HVAC units . There is no valve , electric actuator !
Air Temperature Actuator
The air temperature actuator is a 3 wire bi-directional electric motor. Ignition 3 voltage, ground and control circuits enable the actuator to operate. The control circuit uses a 0-12 volt linear-ramped signal to command the actuator movement. The 0 and 12 volt control values represent the opposite limits of the actuator range of motion. The values in between 0-12 volts correspond to the positions between the limits.
When the HVAC control module sets a commanded, or targeted, value, the control signal is set to a value between 0-12 volts. The actuator shaft rotates until the commanded position is reached. The module will maintain the control value until a new commanded value is needed.

You would need to remove the
Quarter Lower Rear Trim Panel
Remove the rear seats. Refer to Rear Seat Replacement in Seats.
Remove the back body pillar trim. Refer to Upper Rear Trim Finish Panel Replacement .
Remove the body side upper trim panel. Refer to Third Pillar Trim Replacement .

Remove the cup holder from the rear quarter trim.
Remove the rear accessory panel from the left side quarter panel. Refer to Rear Accessory Panel Replacement .
Remove the retainer bolt from the seat belt retractor. Refer to Rear Seat Belt Retractor Replacement in Seat Belts.
Remove the upper cargo net retainers. Refer to Cargo Net Replacement in Body Rear End.
Remove the liftgate sill plate. Refer to Liftgate Door Sill Plate Replacement .
Using J 38778 remove the rear quarter trim panel retainers.
Remove the rear quarter trim panel from the vehicle.
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