Inspection Procedure

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

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   B51-18 (+B) - B51-8 (E1)	Ignition Switch on (IG)	9 to 14 V

   Fig 1: Identifying B51 Connector +B And E1 Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   NG	A
   OK	B

B : CHECK FOR INTERMITTENT PROBLEMS 

A: Go to next step 

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   B51-8 (E1) - Body ground	Always	Below 1 Ω

2. Reconnect the TCM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TCM - BODY GROUND) 

Fig 2: Identifying B51 Connector E1 Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPAIR OR REPLACE HARNESS OR CONNECTOR (TCM - EFI RELAY)