DTC B1247: Tire Pressure Monitor Receiver Communication Stop: Procedure

1. Disconnect the tire pressure warning ECU and receiver O25 or O33 connector and main body ECU (multiplex network body ECU) I13 connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O25-4 (RDA) - I13-16 (RDA)*1 O33-4 (RDA) - I13-16 (RDA)*2	Always	Below 1 Ω
   I13-16 (RDA) - Body ground	Always	10 kΩ or higher

   • *1: w/ Wireless Door Lock Control System
   • *2: w/o Wireless Door Lock Control System

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O25-12 (GND) - Body ground*1 O33-12 (GND) - Body ground*2	Always	Below 1 Ω

   • *1: w/ Wireless Door Lock Control System
   • *2: w/o Wireless Door Lock Control System
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   O25-1 (IG) - Body ground*1 O33-1 (IG) - Body ground*2	Ignition switch ON	10 to 16 V

   • *1: w/ Wireless Door Lock Control System
   • *2: w/o Wireless Door Lock Control System

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the tire pressure warning ECU and receiver. Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Turn the ignition switch off.
3. Turn the ignition switch to ON.
4. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B1247 is not output.

NG → See step   5 

OK → END