Inspection Procedure

1. Check for the DTCs (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 the amount of brake fluid in the brake reservoir.

   OK: 

   Brake fluid level is correct. 

NG: ADD BRAKE FLUID 

OK: Go to next step 

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

   OK: 

   The skid control ECU connector is connected securely. 

NG: CONNECT CONNECTOR CORRECTLY 

OK: Go to next step 

1. Disconnect the brake fluid level warning switch connector.
Fig 1: Identifying Brake Fluid Level Warning Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   1-2	Float UP	1.9 k to 2.1 kΩ
   1-2	Float DOWN	Below 1 Ω

   HINT:

   If the result is as specified, adjust the brake fluid level to the MAX level after measuring the resistance.

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

OK: Go to next step 

1. Disconnect the skid control ECU connector.
Fig 2: Identifying Skid Control ECU Connector And Brake Fluid Level Warning Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the brake fluid level warning switch connector.
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A4-41 (LBL) - A14-2	Below 1 Ω
   A4-41 (LBL) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the parking brake switch connector.
Fig 3: Identifying Parking Brake Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 - Body ground	Released	Below 1 Ω
   1 - Body ground	Pushed in	10 kΩ or higher

NG: REPLACE PARKING BRAKE SWITCH ASSEMBLY  (See INSTALLATION )

OK: Go to next step 

1. Disconnect the skid control ECU.
Fig 4: Identifying Skid Control ECU And Parking Brake Switch Connector
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
   A4-28 (PKB) - E22-1	Below 1 Ω
   A4-28 (PKB) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the skid control ECU connector.
Fig 5: Identifying Skid Control ECU Connector And Combination Meter Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the combination meter connector.
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A5-3 (BRL)-E13-31 (PKB)	Below 1 Ω
   A5-3 (BRL) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the combination meter system (See TERMINALS OF ECU ).

   OK: 

   Combination meter is normal. 

NG: REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )