ECU Power Source Circuit [02/2014 - ]: Procedure

1. Disconnect the M25 tire pressure warning ECU and receiver 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	Condition	Specified Condition
   M25-1 (IG) - Body ground	Power switch on (IG)	10 to 16 V
   	Power 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
   M25-12 (GND) - Body ground	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER. 

Refer to  REMOVAL [02/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR