Toyota Tundra Service Manual: Tire Pressure Monitor ECU Communication Stop (C2179/79)

DESCRIPTION

The main body ECU (multiplex network body ECU) sends signals to the tire pressure warning ECU and receiver via a direct line.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
• It is necessary to perform initialization after registration of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU has been replaced.

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:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Replace the tire pressure warning ECU and receiver.

Click here

NEXT

(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 C2179/79 is not output.

OK

END

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)