Subaru Legacy III (2000-2003 year). Manual - part 348
EN(H6DO)-194
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
9
CHECK INTAKE MANIFOLD PRESSURE
SENSOR.
1) Start the engine and warm-up engine until
coolant temperature is greater than 75
°
C
(167
°
F).
2) Place the shift lever in neutral position.
3) Turn A/C switch to OFF.
4) Turn all accessory switches to OFF.
5) Read data of intake manifold pressure sen-
sor signal using Subaru Select Monitor or
OBD-II general scan tool.
Is the measured value within the specified
range?
NOTE:
• Subaru Select Monitor
For detailed operation procedure, refer to the
“READ CURRENT DATA FOR ENGINE”.
<Ref. to EN(H6DO)-34, Subaru Select Moni-
tor.>
• OBD-II general scan tool
For detailed operation procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
Ignition ON 73.3 — 106.6 kPa
(550 — 800 mmHg, 21.65 —
31.50 inHg), Idling 24.0 — 41.3
kPa (180 — 310 mmHg, 7.09
— 12.20 inHg)
Replace intake
manifold pressure
sensor. <Ref. to
FU(H6DO)-34,
Intake Manifold
Pressure Sensor.>
10
CHECK INTAKE AIR TEMPERATURE SEN-
SOR.
1) Start the engine and warm-up engine until
coolant temperature is greater than 75
°
C
(167
°
F).
2) Place the shift lever in neutral position.
3) Turn A/C switch to OFF.
4) Turn all accessory switches to OFF.
5) Open front hood.
6) Measure ambient temperature.
7) Read data of intake manifold pressure sen-
sor signal using Subaru Select Monitor or
OBD-II general scan tool.
Is value the specified range when ambient
temperature is subtracted from intake air
temperature?
NOTE:
• Subaru Select Monitor
For detailed operation procedure, refer to the
“READ CURRENT DATA FOR ENGINE”.
<Ref. to EN(H6DO)-34, Subaru Select Moni-
tor.>
• OBD-II general scan tool
For detailed operation procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
−
10 — 50
°
C (14 — 122
°
F)
Contact SUBARU
distributor service.
NOTE:
Inspection by DTM
is required, be-
cause probable
cause is deteriora-
tion of multiple
parts.
Check intake air
temperature sen-
sor. <Ref. to
FU(H6DO)-35,
Intake Air Temper-
ature Sensor.>
Step
Value
Yes
No