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 ).

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.
   SKID CONTROL ECU - VOLTAGE TABLE
   
   

   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.

Fig 1: Identifying Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: 

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.
Fig 2: Identifying Skid Control ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: 

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

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