DTC B2637-12

DTC B2637-12  : Short to Power in The Sensor Power Supply Line

NOTE:  If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

DTC (Parking and Back-Up Sensor Control Unit)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -3. Check for DTCs with the HDS.

   DTC Description	DTC
   B2637-12 Short to Power in The Sensor Power Supply Line

   Is DTC B2637-12 indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Determine possible failure area (BOF SIDE L line to power, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Parking and back-up sensor control unit 24P connector

   -3. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Parking and back-up sensor control unit 24P connector: disconnected
   Test point 1	Parking and back-up sensor control unit 24P connector No. 2
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Repair a short to power in the BOF SIDE L wires.

   NO 

   The BOF SIDE L wires are OK. Go to step 3.

3. Determine possible failure area (BOR SIDE L line to power, parking and back-up sensor control unit)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Parking and back-up sensor control unit 24P connector: disconnected
   Test point 1	Parking and back-up sensor control unit 24P connector No. 14
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Repair a short to ground in the BOR SIDE L wires.

   NO 

   Replace the parking and back-up sensor control unit .