TC and CG Terminal Circuit: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   STANDARD VOLTAGE
   
   

   Tester Connection	Switch Condition	Specified Condition
   G37-13 (TC) - G37-4 (CG)	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

NG → See step   4 

OK: Go to next step 

NG → See step   9 

OK: Go to next step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Check for DTCs. Refer to DIAGNOSIS SYSTEM [06/2012 - ] .
   RESULT
   
   

   Result	Proceed to
   CAN system DTC is not output	A
   CAN system DTC is output	B

B → See step   10 

A: Go to next step 

1. Turn the engine switch off.
2. Disconnect the G45 ECM connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   G45-28 (TC) - G37-13 (TC)	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Tester Connection	Condition	Specified Condition
   G37-4 (CG) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
   • SST: 09843-18040 
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

2. Check that the MIL is blinking.
   RESULT
   
   

   Result	Proceed to
   MIL is blinking	A
   MIL is not blinking	B

B → REPAIR OR REPLACE WIRE HARNESS OR ECM 

A: Go to next step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Check for DTCs. Refer to DIAGNOSIS SYSTEM [06/2012 - ] .
   RESULT
   
   

   Result	Proceed to
   CAN system DTC is not output	A
   CAN system DTC is output	B

B → See step   10 

A → See step   8