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.
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
HINT: Inspect the fuses for circuits related to this system before performing the following inspection procedure. PROCEDURE
(a) Disconnect the P21 tire pressure warning ECU and receiver connector. (b) Disconnect the J165 main body ECU (multiplex network body ECU) connector. (c) 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:
(a) Replace the tire pressure warning ECU and receiver. Click here
(a) Clear the DTCs. Click here (b) Turn the ignition switch off. (c) Turn the ignition switch to ON. (d) Check for DTCs. Click here OK: DTC B1247 is not output.
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Toyota Tundra Service Manual > Blind Spot Monitor System: Freeze Frame Data
FREEZE FRAME DATA 1. FREEZE FRAME DATA (a) Whenever a DTC is stored, the blind spot monitor sensor stores the current vehicle (sensor) state as Freeze Frame Data. 2. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) En ...