DTC B1247: Tire Pressure Monitor Receiver Communication Stop [10/2014 - ]: Procedure

1. Disconnect the J26 tire pressure warning ECU and receiver connector.
2. Disconnect the D6 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J26-4 (RDA) - D6-16 (RDA)	Always	Below 1 Ω
   J26-4 (RDA) - Body ground	Always	10 kΩ or higher
   D6-16 (RDA) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J26-12 (GND) - Body ground	Always	Below 1 Ω

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J26-1 (IG) - Body ground	Engine switch on (IG)	10 to 16 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver)

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Replace the tire pressure warning ECU and receiver (Refer to REMOVAL [10/2014 - ] ).

Result: 

NEXT 

See step  4

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
2. Turn the engine switch off.
3. Turn the engine switch on (IG).
4. Check for DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).

   OK

   DTC B1247 is not output.

Result: 

OK 

END 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [10/2014 - ] )