Inspection Procedure

1. Disconnect the TCM connectors.
2. Turn the engine switch off
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A58-2 (E1) - Body ground	Always	Below 1 Ω

Fig 1: Identifying Terminal E1 Of TCM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Disconnect the TCM connectors.
2. Turn the engine switch on (IG)
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   A58-5 (+B) - Body ground	Engine switch on (IG)	11 to 14 V

Fig 2: Identifying Terminal Of TCM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO ECM POWER SOURCE CIRCUIT (ENGINE CONTROL SYSTEM / SFI SYSTEM)  (See ECM POWER SOURCE CIRCUIT )