Inspection Procedure

NOTE: When replacing the master cylinder solenoid, perform zero point calibration (See CALIBRATION ).

CHECK DTC

Check the DTCs (See DTC CHECK/CLEAR ).

Result

RESULT TABLE

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

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See DIAGNOSTIC TROUBLE CODE TABLE )

A: Go to Next Step

INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
1. Check the skid control ECU connector's connecting condition.
  OK: The connector is securely connected.
NG: CONNECT CONNECTOR TO ECU CORRECTLY

OK: Go to Next Step
INSPECT BATTERY
1. Check the battery voltage.
  Standard voltage: 11 to 14 V
NG: INSPECT CHARGING SYSTEM

OK: Go to Next Step

INSPECT SKID CONTROL ECU (IG1 TERMINAL)

Disconnect the skid control ECU connector.
Turn the ignition switch to the ON position.

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
S37-46 (IG1) - Body ground	Ignition switch ON	10 to 14 V

Fig 1: Identifying Skid Control ECU Connector Terminals S37

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)

OK: Go to Next Step

INSPECT SKID CONTROL ECU (GND TERMINAL)

Disconnect the skid control ECU (S38) connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Specified Condition
S37-1 (GND1) - Body ground	Below 1 Ω
S37-32 (GND2) - Body ground	Below 1 Ω
S38-4 (GND3) - Body ground	Below 1 Ω

Fig 2: Identifying Skid Control ECU Connector Terminals S37 & S38

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: Go to Next Step

INSPECT PARKING BRAKE SWITCH

Disconnect the parking brake switch connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Condition	Specified Condition
1 - Body ground	Parking brake switch ON (Switch pin free)	Below 1 Ω
1 - Body ground	Parking brake switch OFF (Switch pin pushed in)	10 kΩ or higher

Fig 3: Identifying Parking Brake Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PARKING BRAKE SWITCH

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - PARKING BRAKE SWITCH)

Fig 4: Identifying Skid Control ECU Connector Terminals S37 & Parking Brake Switch Connector P4

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Specified Condition
S37-28 (PKB) - P4-1	Below 1 Ω
S37-28 (PKB) - Body ground	10 kΩ or higher

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

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)

Disconnect the combination meter connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection	Specified Condition
S38-3 (BRL) - C10-8	Below 1 Ω
S38-3 (BRL) - Body ground	10 kΩ or higher

Fig 5: Identifying Skid Control ECU Connector Terminals S38 & Combination Meter Connector C10-8

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

OK: Go to Next Step

INSPECT COMBINATION METER ASSEMBLY
1. Check the combination meter system (See HOW TO PROCEED WITH TROUBLESHOOTING ).
NG: REPLACE COMBINATION METER ASSEMBLY

OK: REPLACE MASTER CYLINDER SOLENOID