Inspection Procedure

INSPECT DLC3 (TC TERMINAL VOLTAGE)

Turn the ignition switch to the ON position.

Measure the voltage.

Standard

VOLTAGE SPECIFICATION

Tester Connection	Specified Condition
D4-13 (TC) - D4-4 (CG)	10 to 14 V

Turn the ignition switch to OFF.

NG: Go to step 3

Fig 1: Identifying DLC3 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

CHECK CAN COMMUNICATION SYSTEM

Check whether CAN system DTCs are recorded. (See CAN COMMUNICATION SYSTEM ).

DTC OUTPUT REFERENCE

Result	Proceed To
DTC not output	A
DTC output	B

B: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

A: REPLACE MASTER CYLINDER SOLENOID

CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
D4-4 (CG) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying DLC3 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (ECM - DLC3)

Disconnect the ECM connector.

Measure the resistance.

Standard (1GR-FE)

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
D4-13 (TC) - E8-23 (TC)	Below 1 Ω

Standard (2TR-FE)

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
D4-13 (TC) - E7-17 (TC)	Below 1 Ω

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
D4-13 (TC) - Body ground	10 kΩ or higher

Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying DLC3 & ECM Connectors

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU)

Disconnect the skid control ECU connector.
Disconnect the ECM connector.

Measure the resistance.

Standard

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
S1-25 (CANL) - E7-34 (CANL)	Below 1 Ω
S1-11 (CANH) - E7-33 (CANH)	Below 1 Ω

Reconnect the ECM connector.
Reconnect the skid control ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 4: Identifying Skid Control ECU & ECM Connectors

OK: Go to Next Step

CHECK ECM (DLC3 (TC) INPUT)
1. Connect terminals TC and CG of DLC3.
2. Turn the ignition switch to the ON position.
3. Check if the ECM warning light is blinking.
  OK: ECM warning light is blinking.
4. Turn the ignition switch to OFF.
5. Disconnect the TC and CG terminals of DLC3.
NG: REPLACE ECM

Fig 5: Identifying DLC3 Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE MASTER CYLINDER SOLENOID