Inspection Procedure

This code is detected when a problem is determined in the brake actuator assy.

1. Clear the DTCs (See PRE-CHECK  ).
2. Turn the ignition switch to the ON position.
3. Check if the same DTCs are recorded (See PRE-CHECK  ).
   DTC INSPECTION
   
   

   A	DTC C1300/62
   B	Except DTC C1300/62

1. B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC 

A: Go to Next Step. 

WHEN USING HAND-HELD TESTER: 

1. Connect the hand-held tester to the DLC3.
2. Start the engine.
3. Select the DATA LIST mode on the hand-held tester.
   DATA LIST
   
   

   Item	Measurement Item/Range (Display)	Normal Condition
   IG VOLTAGE	ECU power supply voltage/NORMAL or TOO LOW	NORMAL:9.8 V or over TOO LOW: Below 9.8 V

4. Read the voltage condition output from the ECU displayed on the hand-held tester.

   Standard: 

   "Normal" is displayed. 

WHEN NOT USING HAND-HELD TESTER: 

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: 

   TESTER CONNECTION SPECIFIED CONDITION (1 OF 2)
   
   

   Tester Connection	Specified Condition
   S1-18 (IG1) - S1-4 (GND1)	10 to 14 V
   S1-18 (IG1) -S1-1 (GND2)	10 to 14 V

   Fig 1: Inspecting Skid Control ECU Connector (IG1 Terminal Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: REPLACE BRAKE ACTUATOR ASSY (See  REPLACEMENT  ) 

NG: Go to Next Step. 

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

   Standard: 

   TESTER CONNECTION SPECIFIED CONDITION (2 OF 2)
   
   

   Tester Connection	Specified Condition
   S1-4 (GND1) - Body ground	1 Ω or less
   S1-1 (GND2) - Body ground	1 Ω or less

   Fig 2: Inspecting Skid Control ECU Connector (GND Terminal Continuity)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: CHECK AND REPAIR HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND) 

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY)