DTC B1C62

DTC B1C62  : Passenger's Heater Current Abnormal High

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

DTC (Front Seat Heater 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. Turn the seat heater switch ON.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C62 Passenger's heater current abnormal high

   Is DTC B1C62 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 (front passenger's seat heater, others)

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

   -2. Disconnect the following connector.

   Front passenger's seat heater connector A (4P)

   -3. Turn the vehicle to the ON mode.

   -4. Clear the DTCs with the HDS.

   -5. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -6. Turn the seat heater switch ON.

   -7. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C62 Passenger's heater current abnormal high

   Is DTC B1C62 indicated?

   YES 

   Go to step 3.

   NO 

   Go to step 4.

3. Shorted wire check (+B HEATER (AS) line)

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

   -2. Disconnect the following connector.

   Front seat heater control unit 24P connector

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Front seat heater control unit 24P connector: disconnected Front passenger's seat heater connector A (4P): disconnected
   Test point 1	Front seat heater control unit 24P connector No. 3
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short in the +B HEATER (AS) wire.

   NO 

   Replace the front seat heater control unit .

4. DTC check

   -1. Reconnect the following connector.

   Front passenger's seat heater connector A (4P)

   -2. Disconnect the following connector.

   Front passenger's heater connector B (2P)

   -3. Turn the vehicle to the ON mode.

   -4. Clear the DTCs with the HDS.

   -5. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -6. Turn the seat heater switch ON.

   -7. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C62 Passenger's heater current abnormal high

   Is DTC B1C62 indicated?

   YES 

   Replace the front passenger's seat cushion heater .

   NO 

   Replace the front passenger's seat-back heater .