Subaru Legacy 2005 Service Manual page 977

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
7 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Terminals
No. 3 — No. 4:
8 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Terminals
No. 1 — No. 6:
9 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor without depressing the accel-
erator pedal.
Terminals
No. 5 — No. 4:
10 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor without depressing the accel-
erator pedal.
Terminals
No. 2 — No. 6:
11 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor with depressing the accelera-
tor pedal.
Terminals
No. 5 — No. 4:
12 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor with depressing the accelera-
tor pedal.
Terminals
No. 2 — No. 6:
13 CHECK ACCELERATOR PEDAL POSITION
SENSOR OUTPUT.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Turn the ignition switch to ON.
4) Read the data of main throttle sensor signal
and sub accelerator pedal position sensor sig-
nal using Subaru Select Monitor.
NOTE:
For detailed operation procedure, refer to
"READ CURRENT DATA FOR ENGINE". <Ref.
to EN(H4SO 2.5)(diag)-25, Subaru Select Mon-
itor.>
14 CHECK POOR CONTACT.
Check poor contact in connector between
ECM and accelerator pedal position sensor.
Check
Is the resistance 1.2 — 4.8
kΩ?
Is the resistance 0.75 — 3.15
kΩ?
Is the resistance 0.2 — 0.8
kΩ?
Is the resistance 0.15 — 0.63
kΩ?
Is the resistance 0.5 — 2.5
kΩ?
Is the resistance 0.28 — 1.68
kΩ?
Is the voltage less than 4.8 V? Go to step 14.
Is there poor contact?
EN(H4SO 2.5)(diag)-253
ENGINE (DIAGNOSTICS)
Yes
Go to step 8. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 9. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 10. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 11. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 12. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 13. Replace the accel-
erator pedal posi-
tion sensor.
Go to step 15.
Repair the poor Go to step 19.
contact.
No