Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2012TAURUS FWD V6-3.5LREPAIR AND DIAGNOSISWINDOWS AND GLASSTESTING AND INSPECTIONPINPOINT TESTSPINPOINT TEST L: THE DELAYED ACCESSORY IS INOPERATIVE
2012 Ford Taurus FWD V6-3.5L
Pinpoint Test L: The Delayed Accessory is Inoperative
2012 Ford Taurus FWD V6-3.5LSECTION Pinpoint Test L: The Delayed Accessory is Inoperative
Glass, Frames and Mechanisms
Pinpoint Test L: 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 Smart Junction Box (SJB). When the ignition key is turned ON, the SJB (Smart Junction Box) activates the accessory delay relay, which provides power to the LH front window switch through circuit CBP41 (BU)/CBB38 (GY/BU). The delayed accessory feature remains active for 10 minutes after the ignition key is turned OFF or until either front door is opened.
- DTC B1302 (Accessory Delay Relay Coil Circuit Failure)- open or short to ground.
- DTC B1304 (Accessory Delay Relay Coil Circuit Failure)- short to ground on output.
This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Accessory delay relay
- Wiring, terminals or connectors
- SJB (Smart Junction Box)
PINPOINT TEST L : 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.
L1 CHECK THE DOOR AJAR SWITCH OPERATION
- 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 L2.
No
REFER to Lighting and Horns to diagnose the interior lighting and door ajar switches.
L2 CHECK THE ACCESSORY DELAY RELAY
- Disconnect: Accessory Delay Relay.
- Carry out the accessory delay relay component test.
Did the accessory delay relay pass the component test?
Yes
VERIFY Battery Junction Box (BJB) fuse 38 (5A) and SJB (Smart Junction Box) fuse 41 (15A) are OK. If OK, GO to L3.
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.
L3 CHECK CIRCUIT CBP41 (BU)/CBB38 (GY/BU) FOR AN OPEN
- Ignition OFF.
- Disconnect: SJB (Smart Junction Box) C2280A.
- Disconnect: LH Front Window Control Switch C504.
- Measure the resistance between LH front window control switch C504-3, circuit CBB38 (GY/BU), harness side and SJB (Smart Junction Box) C2280A-7, circuit CBP41 (BU), harness side.
Is the resistance less than 5 ohms?
Yes
GO to L4.
No
REPAIR the circuit. TEST the system for normal operation.
L4 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION
- Disconnect all SJB (Smart Junction Box) connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect all SJB (Smart Junction Box) 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 SJB (Smart Junction Box). 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.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.