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