ECU Power Source Circuit [10/2014 - ]: Procedure

1. Disconnect the J26 tire pressure warning ECU and receiver connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J26-1 (IG) - Body ground	Engine switch on (IG)	10 to 16 V
   	Engine 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
   J26-12 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

Result: 

OK 

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR