Inspection Procedure

1. Check that both of the following conditions are satisfied.
   • The brake fluid level in the brake master cylinder reservoir is correct.
   • The parking brake is released.

   HINT:

   When the ABS warning light remains illuminated, repair the malfunctions in the ABS system first.

1. Check if any ABS DTCs are output (See DTC CHECK / CLEAR  ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   DTC not output	A
   DTC output	B

B: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (See  DIAGNOSTIC TROUBLE CODE CHART   ) 

A: Go to next step 

1. Check if the CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   DTC not output	A
   DTC output	B

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

A: Go to next step 

1. Check if the skid control ECU connector is connected securely.

   OK: 

   The connector is connected securely. 

NG: CONNECTOR CORRECTLY 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the tester on.
4. Select the following menu items: Chassis / ABS/VSC/ TRAC / Data List.

   DATA LIST: ABS 

   ABS DATA LIST REFERENCE
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   Parking Brake SW	Parking brake switch / ON or OFF	ON: Parking brake applied OFF: Parking brake released

5. Check that "ON" and "OFF" are properly indicated on the tester display in accordance with the parking brake lever operation.

   OK: 

   Tester display changes in accordance with the parking brake lever operation. 

NG:  Go to step  9

OK: Go to next step 

1. Remove the reservoir tank cap and strainer.
2. Disconnect the brake fluid level warning switch connector.
Fig 1: Identifying Brake Fluid Level Warning Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance.

   HINT:

   There is a float inside the reservoir. Its position can be changed by increasing or decreasing the brake fluid level.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A10-1 - A10-2	Float up (Switch OFF)	1.9 to 2.1 kΩ
   A10-1 - A10-2	Float down (Switch ON)	Below 1 Ω

   HINT:

   If there is no problem after the above check is finished, adjust the brake fluid level to the MAX level.

NG: REPLACE BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY  (See DISASSEMBLY )

OK: Go to next step 

1. Disconnect the D2 combination meter connector.
2. Disconnect the brake fluid level warning switch connector.
Fig 2: Identifying Combination Meter And Brake Fluid Level Warning Switch Connectors Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   D2-2 - A10-1	Below 1 Ω
   D2-2 - Body ground	10 kΩ or higher
   A10-2 - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Inspect the combination meter assembly (See ON-VEHICLE INSPECTION or ON-VEHICLE INSPECTION ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   OK	A
   NG (Hatchback)	B
   NG (Sedan)	C

B: REPLACE COMBINATION METER (for Hatchback)  (See REMOVAL )

C: REPLACE COMBINATION METER (for Sedan)  (See REMOVAL )

A: REPLACE BRAKE ACTUATOR (See  REMOVAL   ) 

1. Disconnect the parking brake switch connector.
2. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   D21-1 - Body ground	Parking brake switch ON (Switch pin released)	Below 1 Ω
   D21-1 -Body ground	Parking brake switch OFF (Switch pin pushed in)	10 kΩ or higher

   Fig 3: Identifying Parking Brake Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PARKING BRAKE SWITCH ASSEMBLY  (See INSPECTION )

OK: Go to next step 

1. Disconnect connector 4C of the main body ECU (See TERMINALS OF ECU  ).
   Fig 4: Identifying 4C Main Body ECU And D21 Parking Brake Switch Connectors Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the parking brake switch connector.
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   4C-2 (PKB) - D21-1	Below 1 Ω
   4C-2 (PKB) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU