Subaru XT 1988 Service Manual page 364

FUEL INJECTION SYSTEM 2-7
TROUBLE CODE (22): KNOCK SENSOR [2700cc model]
w
II
@t2\
(Black)
V:'!!:!J
Control unit
@D
I "II---"' - -·
--------lD
Knock stnlor
@IBlack)
1. 1
t
III
I
II
L2·936
Fig. 86
Check if trouble code is outputted in
NO
.1
Check terminals of control unit.
I
D·check mode. -I
(See page 56.)
~
YES
(
Turn ignition switch OFF
(engine off).
!
Disconnect telt mode connector.
!
Disconnect control unit connector.
!
Check if resistance batween terminal
YES
_I
Check if terminal 36 is open or discon·1
YES
36 IR) of connector (body side) and J
Repair tarminal or harness.
I
body is 532 - 588kO.
·l
nected_
1
!
NO
J
NO
I
Replace control unit.
I
Disconnect knock sensor connector.
!
Check if resistance between terminal
of connector (knock sensor side) and
YES
.1 Repair harness from knock sensor to
I
body is 532 - 588 kO.
·l
control unit.
!
NO
Replace knock sensor.
81