Pinpoint Test F: The Delayed Accessory is Inoperative

Glass, Frames and Mechanisms

Pinpoint Test F: The Delayed Accessory is Inoperative

Normal Operation

The accessory delay relay is located in the Body Control Module (BCM). When the ignition is turned to the ON position, the BCM (Body Control Module) activates the accessory delay relay by grounding the relay coil. When the ignition is turned to the OFF position, the BCM (Body Control Module) continues to ground the accessory delay relay coil for approximately 10 minutes, or until a front door is opened. When the accessory delay relay is active, power is sent to the power window system, power sliding window (if equipped) and roof opening panel (if equipped).

- DTC B131A:12 (Delayed Accessory Power: Circuit Short To Battery)- sets when the BCM (Body Control Module) senses a short to voltage on the accessory delay relay control circuit.

- DTC B131A:14 (Delayed Accessory Power: Circuit Short To Ground or Open)- sets when the BCM (Body Control Module) senses an open or short to ground on the accessory delay relay control circuit.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Accessory delay relay

- BCM (Body Control Module)

PINPOINT TEST F : THE DELAYED ACCESSORY IS INOPERATIVE

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

F1 CHECK FOR CORRECT OPERATION OF THE DOOR AJAR SWITCHES

- Open and close the LH and RH doors and verify the interior lights turn on when the doors are open, and off when the doors are closed.

Do the interior lights operate correctly?

Yes
GO to F2.

No
REFER to Lighting and Horns to diagnose the interior light concern.

F2 CHECK THE ACCESSORY DELAY RELAY

- Ignition OFF.

- Disconnect: Accessory Delay Relay.

- Carry out the accessory delay relay component test.

Did the relay pass the component test?

Yes
GO to F3.

No
INSTALL a new accessory delay relay. TEST the system for normal operation.

F3 CHECK THE LH FRONT WINDOW CONTROL SWITCH POWER CIRCUIT FOR AN OPEN

- Disconnect: LH Front Window Control Switch C537 (regular or SuperCab) or C566B (Crew Cab).

- Disconnect: BCM (Body Control Module) C2280D.

- For regular or SuperCab, measure the resistance between LH front window control switch C537-3, circuit CBP32 (GN/VT), harness side and BCM (Body Control Module) C2280D-17, circuit CBP32 (GN/VT), harness side.





- For Crew Cab, measure the resistance between LH front window control switch C566B-3, circuit CBP01 (BU), harness side and BCM (Body Control Module) C2280D-27, circuit CBP01 (BU), harness side.





Is the resistance less than 5 ohms?

Yes
GO to F4.

No
REPAIR the circuit. TEST the system for normal operation.

F4 CHECK FOR CORRECT BCM (Body Control Module) OPERATION

- Disconnect all BCM (Body Control Module) connectors.

- Check for:
- corrosion.
- pushed-out pins.

- Connect all BCM (Body Control Module) connectors and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.