Subaru 2009 IMPREZA, Service Manual

Page: 940 / 3619

FU(H4DOTC)-15
Throttle Body
FUEL INJECTION (FUEL SYSTEMS)
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Use new O-rings.
Tightening torque:
8 N·m (0.8 kgf-m, 5.9 ft-lb)
Tightening torque:
T1: 3 N·m (0.3 kgf-m, 2.2 ft-lb)
T2: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
C: INSPECTION
1. THROTTLE SENSOR
(METHOD WITH CIRCUIT TESTER)
1) Remove the lower inner trim of passenger’s
side. <Ref. to EI-55, REMOVAL, Lower Inner
Trim.>
2) Turn over the floor mat of passenger’s seat.
3) Remove the protect cover.
4) Remove the nuts and bolts which hold the ECM
to the bracket.
5) Turn the ignition switch to ON. (engine OFF)
6) Measure the voltage between ECM connector
terminals.
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(H4DOTC)(diag)-35, READ CURRENT
DATA FOR ENGINE (NORMAL MODE), OPERA-
TION, Subaru Select Monitor.>
FU-03815
FU-04029
T2
T1
FU-03416
(A) To ECM connector
Throttle
sensor
Accelerator
pedal
Terminal No. Standard
Main
Not depressed
(Full closed)
18 (+) and 29 (–)
Approx.
0.6 V
Depressed
(Full opened) Approx.
3.96 V
Sub
Not depressed
(Full closed)
28 (+) and 29 (–)
Approx.
1.48 V
Depressed
(Full opened) Approx.
4.17 V
Throttle sensor
Throttle opening
angle signal
Standard
Main
0.0 % Approx. 0.6 V
100.0 % Approx. 3.96 V
Sub
0.0 % Approx. 1.48 V
100.0 % Approx. 4.17 V
FU-03417
FU-04049
5 6 7
8
2 1
9
4 3
10
24 22 23 25
11 12 13 14 15
26 27
28
16 17
18 19 20 21
33 34 29 32 30 31
V
(A)