Subaru IMPREZA 2002 Service Manual page 279

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS (DIAGNOSTICS)
Output
voltage
AB :SELECT MO NIT0 R
Applicable cartridge of select monitor: <Ref. to
TOOL, General Description.>
NOTE:
For basic handling of the select monitor, refer to its
Operation Manual.
AC:DIAGNOSTIC TROUBLE CODES
(DTC) ARE DISPLAYED.
A maximum of 3 diagnostic trouble codes (DTC)
are displayed in order of occurrence.
If a particular diagnostic trouble code (DTC) is
not properly stored in memory (due to a drop in AB-
SCM&H/U power supply, etc.) when a problem oc-
curs, the diagnostic trouble code (DTC), followed
by a question mark
' I ? " ,
appears on the select mon-
itor display. This shows it may be an unreliable
reading
.
ABS-10, SPECIAL TOOLS, PREPARATION
Refers to vehicle acceleration detecting
by the analog G sensor. It appears on
the select monitor display in volts.
21 Front Right ABS Sensor Circuit
Open or Shorted Battery
(*a*)/?
u
Display screen
Stop light switch
Valve relav siqnal
t t
Contents to be monitored
Stop light switch signal
Valve relay siqnal
S4M0076A
*a* refers to the troubles in order of occurrence
(Latest, Old, Older and Reference).
ABS warning light
Valve relay monitor
Motor relav monitor
DisDlav screen
I
Contents to be monitored
ABS warning light
Valve relay operation monitor signal
Motor relay operation monitor signal
The most recent diagnostic trouble code
(DTC) appears on the select monitor dis-
The second most recent diagnostic trou-
ble code (DTC) appears on the select
monitor display.
Latest
Display screen
Clear memory?
The third most recent diagnostic trouble
code (DTC) appears on the select moni-
Older
Reference
diagnostic trouble code (DTC) appears
AD:CLEAR MEMORY
Contents to be monitored
Function of clearing diagnostic trouble
code (DTC) and freeze frame data.
AE:ANALOG DATA ARE DIS-
PLAYED.
DisDlav screen
I
Contents to be monitored
1
FR wheel speed
FL wheel speed
RR wheel speed
Wheel speed detected by the Front Right
ABS sensor is displayed in km/h or mile/
h.
Wheel speed detected by the Front Left
ABS sensor is displayed in km/h or mile/
h.
Wheel speed detected by the Rear Right
ABS sensor is displayed in km/h or mile/
h.
RL wheel speed
Wheel speed detected by the Rear Left
ABS sensor is displayed in km/h or mile/
h.
-
Stop light switch monitor voltage is dis-
played.
Stop light switch
AF:ON/OFF DATA ARE DISPLAYED.
Motor relay signal
I
Motor relay signal
I
I
ABS operation signal from ABS con-
trol module to TCM
ABS signal to TCM
1
I
ABS operation signal from ABS con-
trol module to TCM
CCM signal
AG:ABS SEQUENCE CONTROL
1 I
Contents to be monitored
I
IndexNo.
sequence
control
ABS-93