B1247

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: B1247; Tire Pressure Monitor Receiver Communication Stop; 2013 MY FR-S [03/2012 -]
B1247 - Tire Pressure Monitor Receiver Communication Stop

DESCRIPTION

The main body ECU (network gateway ECU) and door control receiver are connected using 2 direct lines that they use to communicate with each other.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When replacing the door control receiver, read the IDs stored in the old ECU using the Techstream and write them down before removal.
* It is necessary to perform registration Programming and Relearning of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.
* When replacing the door control receiver on vehicles, be sure to perform Registration of Recognition Code to register the transmitter IDs after ECU replacement Registration.

HINT
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (NETWORK GATEWAY ECU) - DOOR CONTROL RECEIVER)

(a) Disconnect the H28 door control receiver connector and the D6 main body ECU (network gateway ECU) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF DOOR CONTROL RECEIVER)

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

Standard Resistance:





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









Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. REPLACE DOOR CONTROL RECEIVER

(a) Replace the door control receiver Removal.

NEXT -- Continue to next step.

4. CHECK DTC OUTPUT (B1247)

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON.

(d) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1247 is not output.

NG -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal

OK -- END