Electronic Brake Control Module: Testing and Inspection

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)]

CONSULT Function


APPLICATION ITEMS

CONSULT can display each diagnostic item using the diagnostic test modes as follows.






ECU IDENTIFICATION

ABS actuator and electric unit (control unit) part number can be read.

SELF DIAGNOSTIC RESULT

Refer to "DTC Index" Testing and Inspection.
- The system is presently malfunctioning.
- System malfunction in the past is detected, but the system is presently normal.
Freeze frame data (FFD)






DATA MONITOR

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.
�: Applicable















Note 1: Refer to "System Description" System Description for ON/OFF conditions of each warning lamp and indicator lamp.
Note 2: USS means "hill start assist"

ACTIVE TEST

The active test is used to determine and identify details of a malfunction, based on self-diagnosis test result sand data obtained in the DATA MONITOR. In response to instructions from CONSULT, instead of those from
ABS actuator and electric unit (control unit) on the vehicle, a drive signal is sent to the actuator to check its operation.

CAUTION:
- Never perform ACTIVE TEST while driving the vehicle.
- Always bleed air from brake system before active test.
- Never perform active test when system is malfunctioning.
NOTE:
- When active test is performed while depressing the pedal, the pedal depressing stroke may change. This is not a malfunction.
- "TEST IS STOPPED" is displayed approx. 10 seconds after operation start.
- When performing active test again after "TEST IS STOPPED" is displayed, select "BACK".
- ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON during active test. This is not a malfunction.
ABS IN Valve and ABS OUT Valve
When "Up", "Keep" or "Down" is selected on display screen, the following items are displayed when system is normal.





*: Immediately after being selected, status is "On". Status changes to "Off" after approx. 2 seconds.
ABS IN Valve (ACT) and ABS OUT Valve (ACT)
When "Up", "ACT KEEP" or "ACT UP" is selected on display screen, the following items are displayed when system is normal.





*: Immediately after being selected, status is "On". Status changes to "Off" after approx. 2 seconds.
Stop Lamp ON Relay
When "On" or "Off" is selected on display screen, the following items are displayed when system is normal.





NOTE:
Display occasionally changes On/Off for a moment after ignition switch is turned ON. This is operation for checking purposes and is not a malfunction.

WORK SUPPORT