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 

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

   Standard Resistance

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

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   HINT: 

   If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the parts (Refer to PROBLEM SYMPTOMS TABLE [10/2015 - ] ).

Result: 

OK 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR