Subaru IMPREZA 2002 Service Manual page 434

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Check Yes
s the resistance
less
than
1
2?
Go to step 8.
s the resistance less than 1
n?
Go to step
9.
s there poor contact in intake Repair poor con-
nanifold pressure sensor con- tact in intake air
lector? temperature and
pressure sensor
connector.
s the value more than 11 9.5 Repair battery
(Pa (896.5 mmHg, 35.29 short circuit in har-
nHg)? ness between
ECM and intake
air temperature
and pressure sen-
sor connector.
Step
CHECK HARNESS BETWEEN ECM AND IN.
TAKE AIR TEMPERATURE AND PRESSURE
SENSOR CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from ECM.
3)Measure the resistance of harness between
ECM and intake air temperature and pressure
sensor connector.
Connector & terminal
(8136) NO. 5
-
(€20)
NO.
4:
CHECK HARNESS BETWEEN ECM AND IN-
TAKE AIR TEMPERATURE AND PRESSURE
SENSOR CONNECTOR.
Measure the resistance of harness between
ECM and intake air temperature and pressure
sensor connector.
Connector & terminal
CHECK POOR CONTACT.
Check poor contact in intake air temperature
and pressure sensor connector.
(B 136) NO. 16
-
(€20) NO. 1:
No
Repair open circuit
in harness
between ECM and
intake air tempera-
ture and pressure
sensor connector.
Repair open circuit
in harness
between ECM and
intake air tempera-
ture and pressure
sensor connector.
Replace the intake
air temperature
and pressure sen-
sor. <Ref. to
Intake Air Temper-
ature and Pres-
sure Sensor.>
Replace the intake
air temperature
and pressure sen-
sor. <Ref. to
FU(S0HC)-34,
Intake Air Temper-
ature and Pres-
sure Sensor.>
FU(S0HC)-34,
CHECK HARNESS BETWEEN ECM AND IN*
TAKE AIR TEMPERATURE AND PRESSURE
SENSOR CONNECTOR.
1)Turn the ignition switch to OFF and Subaru
Select Monitor or the OBD-II general scan tool
switch to OFF.
2)Disconnect the connector from intake air
temperature and pressure sensor.
3)Turn the ignition switch
to
ON and Subaru
Select Monitor or the OBD-I1 general scan tool
switch to ON.
4)Read the data of intake manifold absolute
pressure signal using Subaru Select Monitor
01
OBD-ll general scan tool.
NOTE:
*Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE. <Ref.
to EN(S0HC)-32, Subaru Select Monitor.>
*OBD-ll general scan
tool
For detailed operation procedures, refer to the
OBD-ll General Scan Tool Instruction Manual.
EN(S0HC)-110