TC and CG Terminal Circuit: Procedure

1. Check if the CAN communication system DTC is output. Refer to DIAGNOSIS SYSTEM .

   Result

   Result	Proceed to
   DTC not output	A
   DTC output	B

B → See step   6 

A: Go to next step 

1. Turn the ignition switch to ON.
   Fig 1: Identifying DLC3 Connector Terminal CG And TC

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   F16-13 (TC) - F16-4 (CG)	Ignition switch ON	11 to 14 V

   Result

   Result	Proceed to
   NG	A
   OK	B

B → See step   5 

A: Go to next step 

1. Turn the ignition switch to OFF.
   Fig 2: Identifying DLC3 Connector Terminal Of TC

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   F16-13 (TC) - A21-27 (TC)	Always	Below 1 Ω
   F16-13 (TC) - Body ground	Always	10 kΩ or higher

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.
   Fig 3: Identifying DLC3 Connector Terminal CG And Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   F16-4 (CG) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Turn the ignition switch to OFF.
   Fig 4: Identifying DLC3 Connector Terminal CG And TC

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reconnect the ECM connector.
3. Using SST, connect terminals TC and CG of the DLC3.
4. Turn the ignition switch to ON.
5. Check that the check engine warning light is blinking.

   Result

   Result	Proceed to
   Check engine warning light is blinking	A
   Check engine warning light is not blinking	B

B → See step   7 

A → See step   8