Subaru Legacy III (2000-2003 year). Service manual — part 995
CC-12
CRUISE CONTROL SYSTEM
INHIBITOR SWITCH
CRUISE CONTROL SYSTEM (DIAGNOS-
TICS)
CC
Page
Basic Diagnostic Procedure . . . . . . . . . . . . . . . . . . 2
General Description . . . . . . . . . . . . . . . . . . . . . 4
Electrical Components Location. . . . . . . . . . . . . . . . ..7
Cruise Control Module I/O Signal. . . . . . . . . . . . . . . . 8
Subaru Select Monitor. . . . . . . . . . . . . . . . . . . ...10
Diagnostics Chart with Symptom . . . . . . . . . . . . . . . ..12
List of Diagnostic Trouble Code (DTC) . . . . . . . . . . . . . .26
Diagnostics Chart with Trouble Code. . . . . . . . . . . . . . 27
CC-2
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
BASIC DIAGNOSTIC PROCEDURE
1. Basic Diagnostic Procedure
A: PROCEDURE
Step
Value
Yes
No
1
START DIAGNOSIS.
1) Perform pre-inspection. <Ref. to CC-6,
INSPECTION, General Description.>
2) Check cruise control main switch operation.
Is cruise control main switch turned ON?
Cruise main switch is turned
ON.
Go to symptom 1.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
2
PREPARE SUBARU SELECT MONITOR.
Is the Subaru select monitor available?
Subaru select monitor is avail-
able.
3
PERFORM CRUISE CANCEL CONDITIONS
DIAGNOSIS.
Perform cruise cancel conditions diagnosis.
<Ref. to CC-10, Subaru Select Monitor.>
Is trouble code indicated?
Trouble code is not indicated.
Go to “List of Diag-
nostic Trouble
Code (DTC)”.
<Ref. to CC-26,
List of Diagnostic
Trouble Code
(DTC).>
4
CHECK CRUISE CONTROL SET OPERA-
TION.
Check cruise control set operation.
Can cruise control be set while driving at 40
km/h (25 MPH)?
Cruise control can be set.
Go to symptom 2.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
5
CHECK VEHICLE SPEED IS HELD WITHIN
SET SPEED.
Make sure vehicle speed is held within set
speed.
Is vehicle speed held within set speed
±
3 km/h
(
±
2 MPH) ?
Vehicle speed is held within
set speed.
Go to symptom 3.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
6
CHECK RESUME/ACCEL OPERATION.
Check RESUME/ACCEL operation.
Does vehicle speed increase or return to set
speed after RESUME/ACCEL switch has been
pressed?
Vehicle speed increases or
returns to set speed.
Go to symptom 4.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
7
CHECK SET/COAST OPERATION.
Check SET/COAST operation.
Does vehicle speed decrease after SET/
COAST switch has been pressed?
Vehicle speed decreases.
Go to symptom 5.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
8
CHECK CANCEL OPERATION.
Check CANCEL operation.
Is cruise control released after CANCEL switch
has been pressed?
Cruise control is released.
Go to symptom 6.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
9
CHECK CRUISE CONTROL RELEASE OP-
ERATION.
Check cruise control release operation.
Is cruise control released after brake pedal has
been depressed?
Cruise control is released.
Go to symptom 7.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
CC-3
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
BASIC DIAGNOSTIC PROCEDURE
10
CHECK CRUISE CONTROL RELEASE OP-
ERATION.
Check cruise control release operation.
Is cruise control released after clutch pedal
has been depressed? (MT)
Cruise control is released.
Finish the diag-
nostics.
Go to symptom 8.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>
Step
Value
Yes
No
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