BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ANTI-LOCK BRAKE SYSTEM  TC and CG Terminal Circuit  


DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the ABS warning light.

WIRING DIAGRAM

C279595E08
1.427,0.49 1.833,0.719 0.406,0.229 10 false 9*1 0.917,0.698 1.531,0.969 0.615,0.271 10 false CANL 0.917,1.406 1.427,1.667 0.51,0.26 10 false CANH 1.104,2.958 1.417,3.156 0.313,0.198 10 false TC 1.792,0.49 2.104,0.688 0.313,0.198 10 false 26*2 2.188,0.49 2.646,0.823 0.458,0.333 10 false 49*3 1.406,0.688 1.719,0.885 0.313,0.198 10 false A56 1.802,0.688 2.115,0.885 0.313,0.198 10 false A40 2.198,0.688 2.51,0.885 0.313,0.198 10 false A56 1.406,1.385 1.76,1.667 0.354,0.281 10 false A56 1.802,1.396 2.177,1.708 0.375,0.313 10 false A40 2.188,1.396 2.594,1.698 0.406,0.302 10 false A56 1.802,2.958 2.208,3.302 0.406,0.344 10 false A40 1.406,2.958 1.802,3.323 0.396,0.365 10 false A56 2.198,2.958 2.583,3.375 0.385,0.417 10 false A56 1.802,2.76 2.208,3.083 0.406,0.323 10 false 33*2 1.396,2.76 1.813,3.146 0.417,0.385 10 false 41*1 2.177,2.771 2.646,3.104 0.469,0.333 10 false 27*3 0.76,4.156 1.375,4.458 0.615,0.302 10 false ECM 5.698,0.521 6.01,0.719 0.313,0.198 10 false 14 5.698,1.208 6.01,1.406 0.313,0.198 10 false 25 5.938,0.688 6.427,0.948 0.49,0.26 10 false CANL 5.938,1.385 6.552,1.625 0.615,0.24 10 false CANH 5.594,1.813 5.99,2.031 0.396,0.219 10 false A48 5.594,1.99 7.156,2.396 1.563,0.406 10 false Skid Control ECU (Brake Actuator Assembly) 5.698,2.844 6.01,3.042 0.313,0.198 10 false 13 5.75,3.448 6.063,3.646 0.313,0.198 10 false 4 5.948,3.583 6.26,3.781 0.313,0.198 10 false CG 5.958,2.969 6.271,3.167 0.313,0.198 10 false TC 5.969,4.177 6.281,4.375 0.313,0.198 10 false E13 6.302,4.177 6.813,4.469 0.51,0.292 10 false DLC3 0.406,5.313 2.375,5.604 1.969,0.292 10 false : CAN Communication Line 1.438,1.198 1.844,1.479 0.406,0.281 10 false 8*1 1.792,1.198 2.104,1.396 0.313,0.198 10 false 13*2 2.188,1.198 2.615,1.51 0.427,0.313 10 false 41*3 2.458,5.313 3.813,5.542 1.354,0.229 10 false *1: for 1ZR-FE 3.917,5.313 5.073,5.604 1.156,0.292 10 false *2: for 2ZR-FE 5.333,5.313 6.51,5.583 1.177,0.271 10 false *3: for 2NZ-FE

CAUTION / NOTICE / HINT

HINT:

When the indicator lights continue to blink, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs is suspected.


PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM
a.

Check if CAN communication system DTCs are output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM


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



A

2.INSPECT DLC3

B

INSPECT CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


2.INSPECT DLC3
a.
C207407C79
0.25,0.979 0.698,1.271 0.448,0.292 1.823,2.365 2.375,1.01 false 1.594,1.885 1.135,1.01 false 0.333,0.302 0.521,0.469 0.188,0.167 10 false *a 2.313,0.813 2.552,0.979 0.24,0.167 10 false TC 0.365,1.042 0.76,1.313 0.396,0.271 10 false E13 1.021,0.813 1.26,0.979 0.24,0.167 10 false CG
*a Front view of DLC3


Turn the ignition switch to ON.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
E13-13 (TC) - E13-4 (CG) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.REPLACE ECM

NG

4.CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)
3.REPLACE ECM
a.
C207407C79
0.25,0.979 0.698,1.271 0.448,0.292 1.823,2.365 2.375,1.01 false 1.594,1.885 1.135,1.01 false 0.333,0.302 0.521,0.469 0.188,0.167 10 false *a 2.313,0.813 2.552,0.979 0.24,0.167 10 false TC 0.365,1.042 0.76,1.313 0.396,0.271 10 false E13 1.021,0.813 1.26,0.979 0.24,0.167 10 false CG
*a Front view of DLC3


Turn the ignition switch off.


b.

Replace the ECM.

for 1ZR-FE: Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>ECM>REMOVAL

for 2ZR-FE: Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL

for 2NZ-FE: Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL


c.

Using SST, connect terminals TC and CG of the DLC3.


SST
09843-18040  

d.

Check that the ABS warning light is blinking.

OK:

The ABS warning light is blinking.


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 parts.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ANTI-LOCK BRAKE SYSTEM>PROBLEM SYMPTOMS TABLE



Result:
Proceed to
OK
NG



OK

END

NG

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL


4.CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)
a.

Turn the ignition switch off.


b.

Disconnect the A40 or A56 ECM connector.


c.

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

Standard Resistance:
for 1ZR-FE
Tester Connection Condition Specified Condition
E13-13 (TC) - A56-41 (TC) Always Below 1 Ω
E13-13 (TC) or A56-41 (TC) - Body ground Always 10 kΩ or higher

for 2ZR-FE
Tester Connection Condition Specified Condition
E13-13 (TC) - A40-33 (TC) Always Below 1 Ω
E13-13 (TC) or A40-33 (TC) - Body ground Always 10 kΩ or higher

for 2NZ-FE
Tester Connection Condition Specified Condition
E13-13 (TC) - A56-27 (TC) Always Below 1 Ω
E13-13 (TC) or A56-27 (TC) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)
a.
C207407C80
0.25,0.979 0.698,1.271 0.448,0.292 1.594,1.885 2.438,0.958 false 0.333,0.302 0.521,0.469 0.188,0.167 10 false *a 0.354,1.042 0.698,1.25 0.344,0.208 10 false E13 2.438,0.76 2.677,0.927 0.24,0.167 10 false CG
*a Front view of DLC3


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

Standard Resistance:
Tester Connection Condition Specified Condition
E13-4 (CG) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

6.REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.REPLACE ECM
a.
C207407C79
0.25,0.979 0.698,1.271 0.448,0.292 1.823,2.365 2.375,1.01 false 1.594,1.885 1.135,1.01 false 0.333,0.302 0.521,0.469 0.188,0.167 10 false *a 2.313,0.813 2.552,0.979 0.24,0.167 10 false TC 0.365,1.042 0.76,1.313 0.396,0.271 10 false E13 1.021,0.813 1.26,0.979 0.24,0.167 10 false CG
*a Front view of DLC3


Replace the ECM.

for 1ZR-FE: Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>ECM>REMOVAL

for 2ZR-FE: Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL

for 2NZ-FE: Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL


b.

Using SST, connect terminals TC and CG of the DLC3.


SST
09843-18040  

c.

Check that the ABS warning light is blinking.

OK:

The ABS warning light is blinking.


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 parts.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ANTI-LOCK BRAKE SYSTEM>PROBLEM SYMPTOMS TABLE



Result:
Proceed to
OK
NG



OK

END

NG

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL