TC and CG Terminal Circuit

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TC and CG Terminal Circuit

TC and CG Terminal Circuit

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE
NOTICE:
- When replacing the skid control ECU, perform initialization of linear solenoid valve calibration Programming and Relearning.
- If the hybrid control ECU has been replaced, it is necessary to register the ECU Programming and Relearning.

PROCEDURE

1. INSPECT DLC3 (TC AND CG TERMINAL)

(a) Turn the power switch ON (IG).
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- CHECK WIRE HARNESS (DLC3 - HYBRID CONTROL ECU)
OK -- Continue to next step.
2. CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication DTC is output Diagnosis System.

Result

HINT: If troubleshooting has been carried out according to the "PROBLEM SYMPTOMS TABLE", refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

B -- REPAIR CAN COMMUNICATION SYSTEM
A -- Continue to next step.
3. CHECK WIRE HARNESS (DLC3 - HYBRID CONTROL ECU)

(a) Disconnect the A54 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK WIRE HARNESS (DLC3 - BODY GROUND)

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HYBRID CONTROL ECU (DLC3 INPUT)

(a) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040
(b) Check if the ABS warning light is blinking.

Result

B -- REPLACE HYBRID VEHICLE CONTROL ECU
A -- Continue to next step.
6. CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication DTC is output Diagnosis System.

Result

HINT: If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

B -- REPAIR CAN COMMUNICATION SYSTEM
A -- REPLACE SKID CONTROL ECU