Subaru 2009 IMPREZA Service Manual page 126

6) Measure the voltage between ECM connector
terminals.
7 6 5
17 16 15 14
27 26 25 24
34 33
(A) To ECM connector
Throttle Accelerator
sensor pedal
Not
depressed
(Full closed)
Main 18 (+) and 29 (–)
Depressed
(Full opened)
Not
depressed
(Full closed)
Sub 28 (+) and 29 (–)
Depressed
(Full opened)
2. THROTTLE SENSOR
(METHOD WITH SUBARU SELECT MONITOR)
1) Turn the ignition switch to ON. (engine OFF)
2) Read the throttle opening angle signal and volt-
age of throttle sensor using Subaru Select Monitor.
<Ref. to EN(H4SO)(diag)-35, READ CURRENT
DATA FOR ENGINE (NORMAL MODE), OPERA-
TION, Subaru Select Monitor.>
Throttle opening
Throttle sensor
angle signal
Main
100.0 %
Sub
100.0 %
Throttle Body
(A)
4 3 2 1
13 12 11 10 9 8
23 22 21 20 19 18
32 31 30 29 28
V
FU-04049
Terminal No. Standard
Approx. 0.6 V
Approx. 3.96 V
Approx. 1.48 V
Approx. 4.17 V
Standard
0.0 % Approx. 0.6 V
Approx. 3.96 V
0.0 % Approx. 1.48 V
Approx. 4.17 V
FU(H4SO)-15
FUEL INJECTION (FUEL SYSTEMS)