TS and CG Terminal Circuit [10/2014 - 10/2015]: Procedure

1. Check if CAN communication system DTCs are output (Refer to DIAGNOSIS SYSTEM [10/2014 - 10/2015] ).

   Result

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

Result: 

B 

INSPECT CAN COMMUNICATION SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] )

Result: 

A 

See step  2

1. Turn the power switch on (IG).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D28-12 (TS) - D28-4 (CG)	Power switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of DLC3

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Turn the power switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Using SST, connect terminals TS and CG of the DLC3.
   • SST: 09843-18040 
3. Check that the EPS warning light is blinking.

   OK

   The EPS warning light is blinking.

   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 [10/2014 - 10/2015] ).

Result: 

OK 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPLACE POWER STEERING ECU ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

1. Turn the power switch off.
2. Disconnect the c1 power steering ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D28-12 (TS) - c1-6 (TS)	Always	Below 1 Ω
   D28-12 (TS) - Body ground	Always	10 kΩ or higher
   c1-6 (TS) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

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: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Reconnect the c1 power steering ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Using SST, connect terminals TS and CG of the DLC3.
   • SST: 09843-18040 
3. Check that the EPS warning light is blinking.

   OK

   The EPS warning light is blinking.

   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 [10/2014 - 10/2015] ).

Result: 

OK 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPLACE POWER STEERING ECU ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )