Pinpoint Test J: The Delayed Accessory is Inoperative
Glass, Frames and Mechanisms
Pinpoint Tests
Pinpoint Test J: The Delayed Accessory is Inoperative
Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information. Diagrams By Number
Normal Operation
The accessory delay relay is located in the Body Control Module (BCM). When the ignition is turned ON, the BCM activates the accessory delay relay by grounding the relay coil. When the ignition is turned to the OFF position, the BCM 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, it supplies voltage to the power window system.
- DTC B131A:12 (Delayed Accessory Power: Circuit Short To Battery) - sets when the BCM 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 senses an open or short to ground on the accessory delay relay control circuit.
This pinpoint test is intended to diagnose the following:
- Door ajar switches
- Accessory delay relay
- Wiring, terminals or connectors
- BCM
PINPOINT TEST J: THE DELAYED ACCESSORY IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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J1 CHECK FOR CORRECT OPERATION OF THE DOOR AJAR SWITCHES
- Open and close the front doors. Verify the interior lights turn on when the doors are open and off when the doors are closed.
- Do the interior lights operate normally?
Yes
GO to J2.
No
REFER to Interior Lighting Testing and Inspection to diagnose the interior lighting and door ajar switches.
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J2 CHECK THE ACCESSORY DELAY RELAY
- Disconnect: Accessory Delay Relay.
- Carry out the accessory delay relay component test.
- Did the delayed accessory relay pass the component test?
Yes
VERIFY Body Control Module (BCM) fuse 32 (15A) (regular cab) or BCM circuit breaker 48 (30A) (SuperCab or SuperCrew) is OK. If OK, GO to J3. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. REPAIR the circuit. TEST the system for normal operation. Diagrams By Number
No
INSTALL a new accessory delay relay. TEST the system for normal operation.
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J3 CHECK THE LH FRONT WINDOW CONTROL SWITCH POWER CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: BCM C2280D.
- Disconnect: LH Front Window Control Switch C504 (Regular Cab) or C535B(SuperCab or SuperCrew).
- For regular cab, measure the resistance between LH front window control switch C504-3, circuit CBP32 (GN/VT), harness side and BCM C2280D-17, circuit CBP32 (GN/VT), harness side.
- For SuperCab or SuperCrew, measure the resistance between LH front window control switch C535B-1, circuit CBP01 (BU), harness side and BCM C2280D-27, circuit CBP01 (BU), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to J4.
No
REPAIR the circuit. TEST the system for normal operation.
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J4 CHECK FOR CORRECT BCM OPERATION
- Disconnect all BCM connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect all BCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new BCM. REFER to Multifunction Electronic Modules Service and Repair. 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. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
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