ECU Power Source Circuit [12/2012 - ]: Procedure

1. Disconnect the tire pressure warning ECU and receiver M11 connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver)

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   M11-1 (IG) - Body ground	Ignition switch ON	10 to 16 V
   	Ignition switch off	Below 1 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M11-12 (E) - Body ground	Always	Below 1 Ω

Result: 

OK 

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER:  REMOVAL [12/2012 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR