Subaru Forester 2004 Service Manual page 256

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
7 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor.
Terminals
No. 1 — No. 6:
8 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor without depressing the accel-
erator pedal.
Terminals
No. 5 — No. 4:
9 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor without depressing the accel-
erator pedal.
Terminals
No. 2 — No. 6:
10 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor with the accelerator pedal
depressed.
Terminals
No. 5 — No. 4:
11 CHECK ACCELERATOR PEDAL POSITION
SENSOR.
Measure the resistance of accelerator pedal
position sensor with the accelerator pedal
depressed.
Terminals
No. 2 — No. 6:
12 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.
5) Check the voltage change by shaking the
harness and connector of ECM, engine har-
ness connector and accelerator pedal position
sensor connector harness.
13 CHECK POOR CONTACT.
Check poor contact in connector between
ECM and accelerator pedal position sensor.
Check
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 13.
Is there poor contact?
EN(H4DOTC 2.5)-255
ENGINE (DIAGNOSTIC)
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 14.
Repair the poor Go to step 19.
contact.
No