Subaru FORESTER 2001 Service Manual page 122

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
7 CHECK HARNESS BETWEEN ECM AND
INTAKE MANIFOLD PRESSURE SENSOR
CONNECTOR.
Measure resistance of harness between ECM
and pressure sensor connector.
Connector & terminal
(B135) No. 19 — (E21) No. 2:
8 CHECK POOR CONTACT.
Check poor contact in pressure sensor con-
nector.
9 CHECK HARNESS BETWEEN ECM AND
PRESSURE SENSOR CONNECTOR.
1) Turn ignition switch to OFF and Subaru
Select Monitor or the OBD-II general scan
tool switch to OFF.
2) Disconnect connector from pressure sen-
sor.
3) Turn ignition switch to ON and Subaru
Select Monitor or the OBD-II general scan
tool switch to ON.
4) Read data of intake manifold absolute
pressure signal using Subaru Select Monitor
or OBD-II general scan tool.
NOTE:
¼ Subaru Select Monitor
For detailed operation procedure, refer to the
"READ CURRENT DATA FOR ENGINE".
<Ref. to EN(DOHC TURBO)-36, Subaru
Select Monitor.>
¼ OBD-II general scan tool
For detailed operation procedures, refer to the
OBD-II General Scan Tool Instruction Manual.
Step
Is the resistance less than
1 Ω?
Is there poor contact in
pressure sensor connec-
tor?
Is the value more than 282
kPa (2,121 mmHg, 83.50
inHg)?
EN(DOHC TURBO)-121
Check Yes
Go to step 8.
Repair poor con-
tact in pressure
sensor connector.
Repair battery
short circuit in
harness between
ECM and pres-
sure sensor con-
nector.
Engine (Diagnostics)
No
Repair open cir-
cuit in harness
between ECM
and pressure sen-
sor connector.
Replace intake
manifold pressure
sensor. <Ref. to
FU(DOHC
TURBO)-35, Pres-
sure Sensor.>
Replace pressure
sensor. <Ref. to
FU(DOHC
TURBO)-35, Pres-
sure Sensor.>