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 OUTPUT RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B: INSPECT CAN COMMUNICATION SYSTEM (See DIAGNOSTIC TROUBLE CODE CHART )

A: Go to next step

INSPECT DLC3

Turn the ignition switch to ON.

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

Standard Voltage

VOLTAGE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
E15-13 (TC) - E15-4 (CG)	Ignition switch ON	11 to 14 V

Fig 1: Identifying Terminal CG And TC Of DLC3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result

RESULT CHART

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 SPECIFIED CONDITIONS

Tester Connection	Condition	Specified Condition
E15-13 (TC) - A37-27 (TC)	Always	Below 1 Ω
E15-13 (TC) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying Terminal TC Of DLC3 And ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

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

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

Standard Resistance

RESISTANCE SPECIFIED CONDITIONS

Tester Connection	Condition	Specified Condition
E15-4 (CG) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying Terminal CG Of DLC3

OK: Go to next step

CHECK ECM (TC of DLC3 INPUT)

Turn the ignition switch off.
Reconnect the ECM connector.
Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
Turn the ignition switch to ON.

Check that the check engine warning light is blinking.

Fig 4: Identifying Terminal CG And TC Of DLC3

Result

RESULT CHART

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 )