Subaru Legacy III (2000-2003 year). Service manual — part 312
EN(H6DO)-50
ENGINE (DIAGNOSTICS)
INSPECTION MODE
(1) Connect Subaru Select Monitor to data link
connector (A) located in the lower portion of the
instrument panel (on the driver's side).
(2) Connect diagnosis cable to data link con-
nector.
CAUTION:
Do not connect scan tools except for Subaru
Select Monitor and OBD-II general scan tool.
7) Turn ignition switch to ON (engine OFF) and
Subaru Select Monitor switch to ON.
8) On the «Main Menu» display screen, select the
{2. Each System Check} and press the [YES] key.
9) On the «System Selection Menu» display
screen, select the {Engine Control System} and
press the [YES] key.
10) Press the [YES] key after displayed the infor-
mation of engine type.
11) On the «Engine Diagnosis» display screen, se-
lect the {Dealer Check Mode Procedure} and press
the [YES] key.
12) When the “Perform Inspection (Dealer Check)
Mode?” is shown on the display screen, press the
[YES] key.
13) Perform subsequent procedures as instructed
on the display screen.
• If trouble still remains in the memory, the corre-
sponding diagnostic trouble code (DTC) appears
on the display screen.
NOTE:
• For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
• For detailed concerning diagnostic trouble
codes, refer to the List of Diagnostic Trouble Code
(DTC).
<Ref. to EN(H6DO)-89, List of Diagnostic Trouble
Code (DTC).>
• Release the parking brake.
• The speed difference between front and rear
wheels may light either the ABS warning light, but
this indicates no malfunctions. When engine con-
trol diagnosis is finished, perform the ABS memory
clearance procedure of self-diagnosis system.
3. OBD-II GENERAL SCAN TOOL
1) After performing diagnostics and clearing the
memory, check for any remaining unresolved trou-
ble data: <Ref. to EN(H6DO)-54, Clear Memory
Mode.>
2) Connect test mode connector at the lower side
of the instrument panel (on the driver's side).
3) Connect the OBD-II general scan tool to its data
link connector in the lower portion of the instrument
panel (on the driver's side).
(A) Data link connector
(A) Power switch
EN-00710
( A )
EN-00040
( A )
(A) Test mode connector
EN-00711
( A )
EN(H6DO)-51
ENGINE (DIAGNOSTICS)
INSPECTION MODE
CAUTION:
Do not connect the scan tools except for
Subaru Select Monitor and OBD-II general scan
tool.
4) Start the engine.
NOTE:
Ensure the select lever is placed in the “P” position
before starting.
5) Using the select lever, turn the “P” position
switch and the “N” position switch to ON.
6) Depress the brake pedal to turn the brake switch
ON.
7) Keep engine speed in the 2,500 — 3,000 rpm
range for 40 seconds.
8) Place the select lever in the “D” position and
drive the vehicle at 5 to 10 km/h (3 to 6 MPH).
NOTE:
• On AWD vehicles, release the parking brake.
• The speed difference between front and rear
wheels may light the ABS warning light, but this in-
dicates no malfunctions. When engine control diag-
nosis is finished, perform the ABS memory
clearance procedure of self-diagnosis system.
9) Using the OBD-II general scan tool, check for di-
agnostic trouble code(s) and record the result(s).
NOTE:
• For detailed operation procedures, refer to the
OBD-II General Scan Tool Instruction Manual.
• For detailed concerning diagnostic trouble
codes, refer to the List of Diagnostic Trouble Code
(DTC).
<Ref. to EN(H6DO)-89, List of Diagnostic Trouble
Code (DTC).>
(A) Data link connector
EN-00710
( A )
EN(H6DO)-52
ENGINE (DIAGNOSTICS)
DRIVE CYCLE
13.Drive Cycle
A: OPERATION
There are 3 drive patterns for trouble diagnosis. Driving in the specified pattern allows to diagnose the mal-
functioning items listed below. After the malfunctioning items listed below are repaired, always check wheth-
er they correctly resume their functions by driving in the required drive pattern.
1. PREPARATION FOR THE DRIVE CYCLE.
1) Make sure that fuel remains approx. half amount [20 to 40
2
(5.3 — 10.6 US gal, 4.4 — 8.8 Imp gal)], and
battery voltage is 12V or more.
2) After performing diagnostics and cleaning the memory, check for any remaining unresolved trouble data.
<Ref. to EN(H6DO)-54, Clear Memory Mode.>
3) Separate test mode connector.
NOTE:
• Except for water temperature specified items at starting, diagnosis is carried out after engine warm up.
• Carry out diagnosis which is marked * on DTC twice, Then, after finishing 1st diagnosis, stop engine and
do the second time at the same condition.
2. AFTER RUNNING 20 MINUTES AT 80 KM/H (50 MPH), IDLE ENGINE FOR 1 MINUTE.
3. IDLE FOR 10 MINUTES
NOTE:
Before diagnosis, drive vehicle at 4 km/h (6 MPH) or more.
DTC No.
Item
Condition
*P0111
Intake air temperature circuit range/performance
Coolant temperature at start is
less than 30
°
C (86
°
F).
*P0125
Insufficient coolant temperature for closed loop fuel control
Coolant temperature at start is
less than 20
°
C (68
°
F).
*P0133
O2 sensor circuit slow response (Bank 1 Sensor 1)
—
*P0153
O2 sensor circuit slow response (Bank 2 Sensor 1)
—
*P0420
Catalyst System Efficiency Below Threshold (Bank 1)
—
P0459
Evaporative emission control system purge control valve circuit high
—
P0461
Fuel level sensor circuit range/performance
—
DTC No.
Item
Condition
*P0483
Cooling fan rationality check
—
*P0506
Idle control system RPM lower than expected
—
*P0507
Idle control system RPM higher than expected
—
EN(H6DO)-53
ENGINE (DIAGNOSTICS)
DRIVE CYCLE
4. DRIVE ACCORDING TO THE FOLLOWING DRIVE PATTERN
(A) Idle engine for 1 minute.
(D) Decelerate with fully closed throt-
tle to 64 km/h (40 MPH).
(F) Accelerate to 97 km/h (60 MPH)
within 10 seconds.
(B) Accelerate to 97 km/h (60 MPH)
within 20 seconds.
(E) Drive vehicle at 64 km/h (40 MPH)
for 10 seconds.
(G) Stop vehicle with throttle fully
closed.
(C) Drive vehicle at 97 km/h (60 MPH)
for 20 seconds.
DTC No.
Item
Condition
*P0121
Throttle/pedal position sensor/switch “A” circuit range/performance
Coolant temperature at start is
more than 80
°
C (176
°
F).
*P0139
O2 sensor circuit slow response (Bank 1 Sensor 2)
—
*P0171
System too lean (Bank 1)
—
*P0172
System too rich (Bank 1)
—
*P0174
System too lean (Bank 2)
—
*P0175
System too rich (Bank 2)
—
*P0301
Cylinder 1 misfire detected
—
*P0302
Cylinder 2 misfire detected
—
*P0303
Cylinder 3 misfire detected
—
*P0304
Cylinder 4 misfire detected
—
*P0305
Cylinder 5 misfire detected
—
*P0306
Cylinder 6 misfire detected
—
*P0400
Exhaust gas recirculation flow
—
EN-00195
50
100
150
0
65 (40)
96 (60)
(Seconds)
Vehicle speed km/h (MPH)
( A )
( B )
( C )
( D )
( E )
( F )
( G )
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст