Subaru XT 1988 Service Manual page 368

FUEL INJECTION SYSTEM
2-7
TROUBLE CODE (31): THROTTLE SENSOR [1800cc model]
Throttle sensor
To
@
Control unit
@(Black)
BR
16r-------------------------------~
w
21r-------------------------------~
22 B
®
(Black)
®
(Black)
f I I
I
I,J I
I
I I
filII
I
I
Itf
L2·1116
Fig. 90
Check if trouble code is outputted in
NO
I
Check contrOl unit terminals.
I
D·check mode.
1
(See page 56.)
1
YES
Turn ignition switch OF F
(engine off).
1
Disconnect test mode connector.
)
1
Disconnect control unit connector.
1
Check if resistance between terminals
21 (W) and 16 (BRI of connector
(body side) is 6 - 18kn, and between
YES
I
Check if terminals 21. 16 and 22 are
I
NO
~!
Replace control unit.
I
terminals 22 (B) and 16 (BR) is 5.8 -
I
open or disconnected. I
17.8kn (throttle closed) and 1.5 -
1
YES
5.1 kn (throttle open).
1
NO
I
Repair terminal or harness.
I
Disconnect throttle sensor connector.
!
Check if resistance between terminals
®
(BI and
®
(W) of connector
!throttle sensor sidel is 6 - 18 kn,
YES
I
Repair harness from throttle sensor
I
and between terminals
®
(BI and I
to control unit.
CD
(G) is 5.8 -17.8 kn !throttle
closedl and 1.5 - 6.1 kn (throttle
open).
~
NO
Replace throttle sensor.
85