Subaru XT 1988 Service Manual page 369

2-7
FUEL INJECTION SYSTEM
TROUBLE CODE (31): THROTTLE SENSOR [2700cc model]
Control unit
~
(Black)
BR
16r-----------------------------~
22 B
21 W
®
(Black)
Iii
I
i,J i
1
Iii
Fig. 91
Check if trouble code is outputted in
D-check mode.
1
YES
Turn ignition switch OFF
(engine off).
1
C
Disconnect test mode connector.
)
1
Disconnect control unit connector.
1
Check if resistance between terminals
21
(W) and
16
(BRI of connector
(body sidel is 3 - 7 kn, and between
terminals
22
(BI and
16
(BRI is
4.2-
15 kn (throttle closedl and 0.1 -
11 kn (throttle open!.
1
NO
Disconnect throttle sensor connector.
~
Check if resistance between terminals
CD
(BW) and
@
(B) of connector
(throttle sensor sidel is 3 - 7 kn,
and between terminals
@
(GB) and
@
(BI is 4.2 - 15 kn (throttle
closed) and
0.1 - 11
kG (throttle
open).
~
NO
Replace throttle sensor.
®
(Black)
I I
I
I
±
I
1' 1 "1
NO
J
Check control unit terminals.
-I
(See page 56.)
YES
J
Check if terminals
21,16
and
22
are
l
open or disconnected.
!
YES
l
Repair terminal or harness.
YES
c
I
Repair harness from throttle sensor
I
to control unit.
86
j
l
J
J
I
Throttle sensor
To
@
L2·1505
NO
--.l
Replace control unit.
I