TC and CG Terminal Circuit [10/2015 - ]: Procedure

1. Check if CAN communication system DTCs are output.

   w/ Central Gateway ECU

   Refer to DIAGNOSIS SYSTEM [10/2015 - ]

   w/o Central Gateway ECU

   Refer to DIAGNOSIS SYSTEM [10/2015 - ]

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output.	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

w/ Central Gateway ECU

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]

w/o Central Gateway ECU

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]

Result: 

A 

See step  2

1. Check if DTC C2179/79 is output (Refer to DTC C2179/79: Tire Pressure Monitor ECU Communication Stop [10/2014 - ] ).

   Result

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

Result: 

B 

GO TO DTC C2179/79 

(Refer to DTC C2179/79: Tire Pressure Monitor ECU Communication Stop [10/2014 - ] )

Result: 

A 

See step  3

1. Disconnect the A18 ECM connector.
2. Disconnect the D136 hybrid vehicle control ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D28-13 (TC) - A18-23 (TC)	Always	Below 1 Ω
   D28-13 (TC) - D136-28 (TC)	Always	Below 1 Ω
   D28-13 (TC), A18-23 (TC) or D136-28 (TC) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D28-4 (CG) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR