Inspection Procedure

1. Check the DTCs (See DTC CHECK/CLEAR  ).

   Result 

   RESULT CHART
   
   

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

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

A: Go to next step 

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 

1. Check the battery voltage.

   Standard voltage: 

   11 to 14 V 

NG: INSPECT CHARGING SYSTEM 

OK: Go to next step 

1. Disconnect the skid control ECU connector.
2. Turn the ignition switch to the ON position.
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   S37-46 (1G1) - Body ground	Ignition switch ON	10 to 14 V

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

Fig 1: Inspecting Skid Control ECU (IG1 Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the skid control ECU (S38) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   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

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

Fig 2: Inspecting Skid Control ECU (GND Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the parking brake switch connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   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: Inspecting Parking Brake Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE PARKING BRAKE SWITCH 

OK: Go to next step 

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   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) 

Fig 4: Checking Harness And Connector (Skid Control ECU - Parking Brake Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the combination meter connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

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

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

Fig 5: Checking Harness And Connector (Skid Control ECU - Combination Meter)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Check the combination meter system (See HOW TO PROCEED WITH TROUBLESHOOTING ).

NG: REPLACE COMBINATION METER ASSEMBLY 

OK: REPLACE MASTER CYLINDER SOLENOID