TIRE PRESSURE WARNING SYSTEM TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by the blinking of the tire pressure warning light.

WIRING DIAGRAM

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check the CAN communication system.

      for LHD with Central Gateway ECU: Click here

      for RHD with Central Gateway ECU: Click here

      for LHD without Central Gateway ECU: Click here

      for RHD without Central Gateway ECU: Click here

      
      CAN Bus Check

      OK
      The CAN communication system is normal.

      Result
      Proceed to OK NG

   
   

   NG

   GO TO CAN COMMUNICATION SYSTEM for LHD with Central Gateway ECU: Click here GO TO CAN COMMUNICATION SYSTEM for RHD with Central Gateway ECU: Click here GO TO CAN COMMUNICATION SYSTEM for LHD without Central Gateway ECU: Click here GO TO CAN COMMUNICATION SYSTEM for RHD without Central Gateway ECU: Click here

   OK

2. CHECK DTC OUTPUT (C2179/79)

   
   

   1. Clear the DTCs.

      Click here

      
      Chassis > Tire Pressure Monitor > Clear DTCs

   2. Turn the ignition switch off.

   3. Turn the ignition switch to ON.

   4. Check for DTCs.

      Click here

      
      Chassis > Tire Pressure Monitor > Trouble Codes

      OK
      DTC C2179/79 is not output.

      Result
      Proceed to OK NG

   
   

   NG

   GO TO DTC C2179/79 Click here

   OK

3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)

   
   

   1. Disconnect the ECM A61*1 or A62*2 connector.

      
      

      • *1: for 2AD-FTV, 2AD-FHV

      • *2: for 2AR-FE, 3ZR-FAE, 3ZR-FE, 2WW

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

      Standard Resistance
      for 2AD-FTV, 2AD-FHV
      Tester Connection Condition Specified Condition G14-13 (TC) - A61-26 (TC) Always Below 1 Ω
      for 2AR-FE, 3ZR-FE (for K111, K111F)
      Tester Connection Condition Specified Condition G14-13 (TC) - A62-23 (TC) Always Below 1 Ω
      for 3ZR-FAE, 3ZR-FE (execept K111, K111F)
      Tester Connection Condition Specified Condition G14-13 (TC) - A62-33 (TC) Always Below 1 Ω
      for 2WW
      Tester Connection Condition Specified Condition G14-13 (TC) - A62-50 (TC) Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)

   
   
   1. 

      *a	Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition G14-4 (CG) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

5. INSPECT DLC3 (TC VOLTAGE)

   
   

   1. Connect the ECM A61*1 or A62*2 connector.

      
      

      • *1: for 2AD-FTV, 2AD-FHV

      • *2: for 2AR-FE, 3ZR-FAE, 3ZR-FE, 2WW

   2. 

      *a	Front view of DLC3

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition G14-13 (TC) - G14-4 (CG) Ignition switch ON 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPLACE ECM for 2WW: Click here REPLACE ECM for 2AD-FHV: Click here REPLACE ECM for 2AD-FTV: Click here REPLACE ECM for 2AR-FE: Click here REPLACE ECM for 3ZR-FAE: Click here REPLACE ECM for 3ZR-FE: Click here