C2179

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2179/79: Tire Pressure Monitor ECU Communication Stop
C2179/79 - Tire Pressure Monitor ECU Communication Stop

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





INSPECTION PROCEDURE

NOTICE:
* When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the Techstream and write them down before removal.
* It is necessary to perform initialization Initialization after registration Registration of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU has been replaced.
* When replacing the tire pressure warning ECU and receiver on vehicles equipped with the wireless door lock control system (w/o smart key system), be sure to perform Registration of Recognition Code to register the transmitter IDs after ECU replacement Registration.

PROCEDURE

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

(a) Disconnect the tire pressure warning ECU and receiver O25 or O33 connector and main body ECU (multiplex network body ECU) I13 connector.

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

Standard Resistance:





*1: w/ Wireless Door Lock Control System

*2: w/o Wireless Door Lock Control System

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

2. REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

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

NEXT -- Continue to next step.

3. CHECK DTC OUTPUT

(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 C2179/79 is not output.

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

OK -- END