Tire Pressure Warning System (For Hatchback) Ecu Power Source Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (POWER SOURCE OF TIRE PRESSURE WARNING ECU AND RECEIVER)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. 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.
   
2. It is necessary to perform initialization (YARIS_NCP93 RM000000XMZ073X.html) after registration (YARIS_NCP93 RM000000XN107WX.html) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.
   
3. 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 (YARIS_NCP93 RM0000023D302UX.html).
   

HINT:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1. Disconnect the tire pressure warning ECU and receiver J69 connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   J69-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V
   J69-7 (+B) - Body ground *1	Always	11 to 14 V

   1. *1: w/ Wireless Door Lock System
      

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   J69-12 (GND) - Body ground	Always	Below 1 Ω

   Text in Illustration

   *A	w/ Wireless Door Lock System
   *a	Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver)