Inspection Procedure

NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION ).

CHECK CAN COMMUNICATION SYSTEM

Check if a CAN communication system DTC is output (See DTC CHECK / CLEAR ).

Result

DTC RESULT REFERENCE

Result	Proceed to
CAN communication system DTC is not output	A
CAN communication system DTC is output	B

B: INSPECT CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next step

INSPECT DLC3

Turn the ignition switch to the ON position.

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

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
D1-13 (TC) - D1-4 (CG)	Ignition switch ON	10 to 14 V

Fig 1: Identifying CG And TC Connector Terminals Of DLC

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result

DTC RESULT REFERENCE

Result	Proceed to
NG	A
OK	B

B: Go to step 5

A: Go to next step

CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)

Turn the ignition switch off.
Disconnect the ECM connector.

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

Standard resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
D1-13 (TC) - E5-23 (TC)	Always	Below 1 Ω
D1-13 (TC) - Body ground	Always	10 kΩ or higher

Fig 2: Identifying ECM Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC of DLC3 - ECM)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

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

Standard resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
D1-4 (CG) - Body ground	Always	Below 1 Ω

Fig 3: Identifying CG Connector Terminals Of DLC

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

OK: Go to next step

CHECK ECM (TC of DLC3 INPUT)

Reconnect the ECM connector.
Using the SST, connect terminals TC and CG of the DLC3.
SST 09843-18040

Fig 4: Identifying CG And TC Connector Terminals Of DLC
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Turn the ignition switch to the ON position.

Check that the check engine warning light is blinking.

Result

DTC RESULT REFERENCE

Result	Proceed to
Check engine warning light is blinking	A
Check engine warning light is not blinking	B

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 (See PROBLEM SYMPTOMS TABLE ).

B: REPAIR OR REPLACE WIRE HARNESS OR ECM (TC of ECM CIRCUIT)

A: REPLACE BRAKE ACTUATOR ASSEMBLY (See REMOVAL )