Tire Pressure Monitor ECU Communication Stop (C2179/79)

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

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 (See page ) after registration (See page ) of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU has been replaced.
• If the main body ECU (multiplex network body ECU) is replaced, refer to Registration (See page ).*

  *: w/ Smart Key System

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

(a) Disconnect the T14*1, T25*2, T24*3 tire pressure warning ECU and receiver connector.

(b) Disconnect the M6 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

• *1: w/o Wireless Door Lock System
• *2: w/o Smart Key System with Wireless Door Lock System
• *3: w/ Smart Key System

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

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

NEXT

1. CHECK DTC OUTPUT

(a) Clear the DTCs (See page ).

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON.

(d) Check for DTCs (See page ).

OK:

DTC C2179/79 is not output.

OK

END

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)