Subaru FORESTER 2001 Service Manual page 244

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK CURRENT DATA.
1) Start engine.
2) Read data of exhaust gas temperature
sensor 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.
2 CHECK HARNESS BETWEEN EXHAUST
GAS TEMPERATURE SENSOR AND ECM
CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from exhaust gas
temperature sensor.
3) Turn ignition switch to ON.
4) Read data of exhaust gas temperature
sensor 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 value greater than
1200°C (2192°F)?
Is the value less than
372°C (702°F)?
EN(DOHC TURBO)-243
Check Yes
Go to step 2.
Replace exhaust
gas temperature
sensor. <Ref. to
FU(DOHC
TURBO)-46,
Exhaust Tempera-
ture Sensor.>
Engine (Diagnostics)
No
Repair poor con-
tact.
NOTE:
In this case,
repair the follow-
ing:
¼ Poor contact in
exhaust gas tem-
perature sensor
¼ Poor contact in
ECM
¼ Poor contact in
joint connector
Repair ground
short circuit in
harness between
exhaust gas tem-
perature sensor
and ECM connec-
tor.