Pinpoint Test M: The Delayed Accessory Does Not Turn Off

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test M: The Delayed Accessory Does Not Turn Off

Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information. Diagrams By Number

Normal Operation

The accessory delay relay, located in the Smart Junction Box (SJB), receives power from the Battery Junction Box (BJB) through circuit SDC02 (RD). When the ignition key is turned ON, the SJB activates the accessory delay relay. The accessory delay relay provides power to the LH front window control switch through circuit CBP47 (GN/BU). On MKX, the accessory delay relay also provides power to the RH front window switch and the LH and RH front window motors through circuit CBP41 (BU). The accessory delay relay 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) - Sets when an open or short to ground is detected in the coil control circuit.

This pinpoint test is intended to diagnose the following:
- Accessory delay relay
- SJB



PINPOINT TEST M: THE DELAYED ACCESSORY DOES NOT TURN OFF

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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M1 CHECK FOR STUCK/STICKING ACCESSORY DELAY RELAY


- Disconnect: Accessory Delay Relay.
- Attempt to operate the power windows.
- Do the power windows still operate?

Yes
GO to M3.

No
GO to M2.

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M2 CHECK THE ACCESSORY DELAY RELAY


- Carry out the accessory delay relay component test.

- Did the accessory delay relay pass the component test.

Yes
GO to M4.

No
INSTALL a new accessory delay relay. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

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M3 CHECK CIRCUIT CBP47 (GN/BU) FOR A SHORT TO POWER


- Ignition OFF.
- Disconnect: SJB C2280D.
- Ignition ON.
- Measure the voltage between SJB C2280D-32, circuit CBP47 (GN/BU), harness side and ground.




- Is any voltage present?

Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.

No
GO to M4.

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M4 CHECK FOR CORRECT SJB OPERATION


- Disconnect all the SJB connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect all the SJB 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. TEST the system for normal operation.

No
The system is operating correctly at this time. The 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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