DTC C2179/79: Tire Pressure Monitor ECU Communication Stop [12/2013 - ]: Procedure

1. Disconnect the M25 tire pressure warning ECU and receiver connector.
2. Disconnect the F19 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M25-5 (PRG) - F19-5 (PRG)	Always	Below 1 Ω
   M25-5 (PRG) or F19-5 (PRG) - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Replace the tire pressure warning ECU and receiver.

   Refer to REMOVAL [12/2013 - ]

Result: 

NEXT 

See step  3

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [12/2013 - ]

   Chassis > Tire Pressure Monitor > Clear DTCs 

2. Turn the ignition switch off.
3. Turn the ignition switch to ON.
4. Check for DTCs.

   Refer to DTC CHECK / CLEAR [12/2013 - ]

   Chassis > Tire Pressure Monitor > Trouble Codes 

   OK

   DTC C2179/79 is not output.

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). 

Refer to  REMOVAL [12/2013 - ]