Dtc B1247 Tire Pressure Monitor Receiver Communication Stop

Suspension. Land Cruiser. Urj200, 202 Grj200 Vdj200
Tire Pressure Monitoring. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - TIRE PRESSURE WARNING ECU AND RECEIVER)

CHECK HARNESS AND CONNECTOR (POWER SOURCE OF TIRE PRESSURE WARNING ECU AND RECEIVER)

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

CHECK DTC OUTPUT (B1247)

DTC B1247 Tire Pressure Monitor Receiver Communication Stop


DESCRIPTION

The main body ECU (multiplex network body ECU) and tire pressure warning ECU and receiver are connected using 2 direct lines that they use to communicate with each other.

DTC No.
DTC Detection Condition
Trouble Area
B1247
In diagnostic mode, an applicable RDA signal cannot be received within 10 seconds after a PRG signal is sent from the main body ECU (multiplex network body ECU).
  1. Tire pressure warning ECU and receiver
  2. Wire harness or connector
  3. Main body ECU (multiplex network body ECU)

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Tire Pressure Monitoring.Tire Pressure Warning System. Dtc B1247 Tire Pressure Monitor Receiver Communication Stop


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the GTS and write them down before removal.
  2. It is necessary to perform initialization (Click here) after registration (Click here) of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU has been replaced.
  3. If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
HINT:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - TIRE PRESSURE WARNING ECU AND RECEIVER)

  1. Turn the engine switch off.

  1. Disconnect the L65*1 or L75*2 tire pressure warning ECU and receiver connector.

    1. *1: w/o Front Antenna
    2. *2: w/ Front Antenna

  1. Disconnect the E118 main body ECU (multiplex network body ECU) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L65-4 (RDA) - E118-4 (RDA)*1
    L75-4 (RDA2) - E118-4 (RDA)*2
    		Always
    		Below 1 Ω
    L65-4 (RDA) or E118-4 (RDA) - Body ground*1
    L75-4 (RDA2) or E118-4 (RDA) - Body ground*2
    		Always
    		10 kΩ or higher
    1. *1: w/o Front Antenna
    2. *2: w/ Front Antenna


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (POWER SOURCE OF TIRE PRESSURE WARNING ECU AND RECEIVER)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Tire Pressure Monitoring.Tire Pressure Warning System. Dtc B1247 Tire Pressure Monitor Receiver Communication Stop

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L65-12 (GND) - Body ground*1
    L75-12 (GND) - Body ground*2
    		Always
    		Below 1 Ω
    1. *1: w/o Front Antenna
    2. *2: w/ Front Antenna
    Text in Illustration
    *A
    		w/o Front Antenna
    *B
    		w/ Front Antenna
    *a
    		Front view of wire harness connector
    (to Tire Pressure Warning ECU and Receiver)

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L65-1 (IG) - Body ground*1
    L75-1 (IG) - Body ground*2
    		Engine switch on (IG)
    		10 to 16 V
    1. *1: w/o Front Antenna
    2. *2: w/ Front Antenna


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

  1. Replace the tire pressure warning ECU and receiver (Click here).


NEXT


4.CHECK DTC OUTPUT (B1247)

  1. Clear the DTCs (Click here).

  1. Turn the engine switch off.

  1. Turn the engine switch on (IG).

  1. Check for DTCs (Click here).

    Result:

    Result
    		Proceed to
    DTC B1247 is not output.
    		A
    DTC B1247 is output.
    		for LHD
    		B
    for RHD
    		C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)

C
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)
A

END