3-58 DRIVE-CONTROL COMPONENTS- ABS
2. Diagnostic Trouble Code Indication Method
Diagnostic trouble codes are indicated as described
below, depending on failure conditions in the system. ‘d
System failure condition
Display on scan tool Display by voltmeter
No failure detected in the
past No diagnostic trouble code displayed. ON/OFF at 0.5 sec. intervals
(no-failure code)
Failure detected in the
All codes associated with the failures that
past All codes associated with the failures that
occurred in the past are displayed,begin-
occurred in the past are displayed, begin-
ning with the most recent one.
ning with the most recent one.
NOTE
Even if failures of a same code repeatedly occur, the code that is displayed is the one stored for the first time only,
3. Diagnostic Trouble Code Clearing Procedure
Clear the memory according to the message that
(2) To check whether the memory has been cleared,
appears on the scan tool. (For details, refer to the
instruction manual for the scan tool.) the diagnostic trouble code reading procedure
should be performed.
NOTE (3) Even after the memory has been cleared, an
instruction from the scan tool can be accepted.
(1) When the ABS-ECU system is out of order,
the diagnostic trouble codes in the memory can- To confirm a diagnosis code, the scan tool
not be cleared by use of the scan tool. should be re-operated.
Actuator Test
The actuator can be force-driven using the scan
tool for easy operation inspection, actuator testing exceedsIO km/h (6 mph),
forced actuation will be cancelled. Lj
NOTE (3) The following item numbers are those to be
entered on the scan tool to give an actuator
(1) If the ABS-ECU function has been cancelled,
an actuator test cannot be performed. test instruction.
(2) Actuator testing is only possible when the ve-
hicle is stationary. If the vehicle speed during
Item No. Drive object Drive pattern
04 F.R. solenoid valve
and pump motor Increase in
Solenoid
valve ;;;ij’ijiq+r
05 F.L. solenoid valve 44 ms 3sec. I
and pump motor ;;; ,9”: I1 *ms
Start of forced actuation
End of forced actuation
14AO588