Toyota CH-R Service Manual: TC and CG Terminal Circuit

Toyota CH-R Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control 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 and slip indicator lights.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning.

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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.

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

INSPECT CAN COMMUNICATION SYSTEM

2.	INSPECT DLC3

(a) 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
F41-13 (TC) - F41-4 (CG)	Ignition switch ON	11 to 14 V

*a	Front view of DLC3

GO TO STEP 4

3.	REPLACE ECM

*a	Front view of DLC3

(a) Turn the ignition switch off.

(b) Replace the ECM.

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SST: 09843-18040

(d) Check that the ABS warning, slip indicator and brake hold standby indicator lights are blinking.

OK:

The ABS warning, slip indicator and brake hold standby indicator lights are 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 here

END

REPLACE BRAKE ACTUATOR ASSEMBLY

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

(a) Turn the ignition switch off.

(b) Disconnect the A38 ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F41-13 (TC) - A38-33 (TC)	Always	Below 1 Ω
F41-13 (TC) or A38-33 (TC) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F41-4 (CG) - Body ground	Always	Below 1 Ω

*a	Front view of DLC3

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	REPLACE ECM

*a	Front view of DLC3

(a) Replace the ECM.

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

SST: 09843-18040

OK:

The ABS warning, slip indicator and brake hold standby indicator lights are 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 here

END

REPLACE BRAKE ACTUATOR ASSEMBLY

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