Inspection Procedure

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

HINT:

When releasing the parking brake, set the chocks to hold the vehicle for safety.

CHECK BRAKE FLUID
1. Check that the brake fluid level is proper.
NG: ADD BRAKE FLUID

OK: Go to next step
INSPECT SKID CONTROL ECU CONNECTOR SECURELY CONNECTED
1. Check the ECU connector's connecting condition.
  OK:
  
  The connector should be securely connected.
NG: CONNECT CONNECTOR TO ECU CORRECTLY

OK: Go to next step
CHECK DTC FOR ABS
1. Are the DTCs recorded? (See DTC CHECK/CLEAR )
NO: Go to step 4

YES : REPAIR CIRCUIT INDICATED BY OUTPUT DTC

INSPECT BRAKE WARNING LIGHT

WHEN USING TECHSTREAM:

Connect Techstream to the DLC3.
Start the engine.

Select the "Brake Warning Light" in the Active Test and operate the BRAKE warning light by Techstream.

ABS/VSC/TRAC:

ABS/VSC/TRAC ACTIVE TEST REFERENCE

Tester Display	Test Part	Control Range	Diagnostic Note
Brake Warning Light	BRAKE warning light	Warning light ON/OFF	Observe combination meter

Check that "ON" and "OFF" of the BRAKE warning light are indicated on the combination meter when using Techstream.
OK:

The BRAKE warning light turns on or off in accordance with Techstream.

WHEN NOT USING TECHSTREAM:
1. Turn the ignition switch off.
2. Disconnect the skid control ECU connector.
3. Turn the ignition switch to the ON position.
4. Check that the BRAKE warning light.
  OK:
  
  The brake warning light comes on.

NG: Go to step 5

OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY

INSPECT PARKING BRAKE SWITCH

Remove the parking brake switch connector.

Fig 1: Identifying Parking Brake Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 - Ground part	Free	Below 1 Ω
1 - Ground part	Pushed in	10 kΩ or higher

NG: REPLACE PARKING BRAKE SWITCH

OK: Go to next step

CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - DAYTIME RUNNING LIGHT RELAY)

Disconnect the daytime running light relay connector and parking brake switch connector.

Fig 2: Identifying Daytime Running Light Relay And Parking Brake Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

tester Connection	Specified Condition
D2-11 (PKB) - P4-1 (PKB)	Below 1 Ω
P4-1 (PKB) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT DAYTIME RUNNING LIGHT RELAY
1. Check the daytime running light relay.
NG: REPLACE DAYTIME RUNNING LIGHT RELAY

OK: Go to next step

CHECK HARNESS AND CONNECTOR (DAYTIME RUNNING LIGHT RELAY - SKID CONTROL ECU)

Disconnect the skid control ECU connector and daytime running light relay connector.

Fig 3: Identifying Skid Control ECU And Daytime Running Light Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Specified Condition
D2-10 (BRK) - S1-28 (PKB)	Below 1 Ω
S1-28 (PKB) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT BRAKE FLUID LEVEL WARNING SWITCH

Remove the reservoir tank cap and strainer.
Disconnect the brake fluid level warning switch connector.

Fig 4: Identifying Brake Fluid Level Warning Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
1 - 2	Float UP	10 kΩ or higher
1 - 2	Float DOWN	Below 1 Ω

NG: REPLACE BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY (BRAKE FLUID LEVEL WARNING SWITCH)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH COMBINATION METER)

Disconnect the combination meter connector and the brake fluid level warning switch connector.

Fig 5: Identifying Combination Meter And Brake Fluid Level Warning Switch Connector Terminals

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Specified Condition
(C11-12) - (B2-1)	Below 1 Ω

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Specified Condition
(C11-12) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

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

Disconnect the skid control ECU connector and combination meter connector.

Fig 6: Identifying Skid Control ECU And Combination Meter Connector Terminals

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Specified Condition
S1-44 (BRL) - (C11-9)	Below 1 Ω

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Specified Condition
S1-44 (BRL) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

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

OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY