TC and CG Terminal Circuit: Procedure

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

   Result

   Result	Proceed to
   DTC is not output.	A
   DTC is output.	B

B → See step   7 

A: Go to next step 

1. Check if DTC C2179/79 is output. Refer to DTC C2179/79: Tire Pressure Monitor ECU Communication Stop .

   Result

   Result	Proceed to
   DTC C2179/79 is not output.	A
   DTC C2179/79 is output.	B

B → See step   8 

A: Go to next step 

1. Disconnect the ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 2AR-FE
   
   

   Tester Connection	Condition	Specified Condition
   I39-13 (TC) - A25-23 (TC)	Always	Below 1 Ω

   FOR 2GR-FE
   
   

   Tester Connection	Condition	Specified Condition
   I39-13 (TC) - A25-45 (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.
   Fig 1: Checking Harness And Connector (CG Of DLC3 - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I39-4 (CG) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the ECM connector.
   Fig 2: Checking DLC3 Connector Terminals

   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
   I39-13 (TC) - I39-4 (CG)	Ignition switch ON	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

   Result

   Condition	Proceed to
   OK	A
   NG (for 2AR-FE)	B
   NG (for 2GR-FE)	C

B → See step   9 

C → See step   10 

A → See step   6