Service Manual - Page 101

For 1987 300ZX.

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TIME CONTROL !SYSTEM
(+I
I
(-1
I
OFF
-
Preparation for Trouble-shooting
-
1.
Remove
R
H
dash side cover and remove
blower motor
2
Remove time control unit with harness con-
nected.
3
Connect main harness to instrument harness
(if
disconnected)
Check
from
harness
side
ACC
I
ON
Ii
TCU
-Power Supply Circuit Check-
Voltmeter
terminals
I
Ionition
switch
Dosition
12v
12v
Ohmmeter
terminals
COntlnUltY
I+)
I
(-1
SEL7240
-
Trouble-shooting
Intermittent wiper does
not
operate
power supply circuit
I
Check wioer relav circuit
I
Check wiper relay
Check harness between Replace
I
T
C
U
and wiper relay wiper relay
c
Check wiper switch circuit check
Check wiper switch
Check harness between
T
C
U
Replace
and wiper switch
*
wiper switch
3l
WIPER RELAY CIRCUIT CHECK
1
Turn wiper switch to "INT"
2
Turn ignition switch to "ACC".
3.
Measure voltage across
@
and
@
Check
from
harness
side
mm
Wiper
witch
INT
o-'2v
ignition
witch
ACC
Needle
shakes
from
0
to
12V
every
2
to
15
seconds
SEL7080
Voltmeter
6:
WIPER SWITCH CIRCUIT CHECK
1
Turn wiper switch to "INT"
2
Turn ignition switch
to
"OFF"
3.
Check continuity between
@
and
@.
Check
from
harness
ride
Wiper
switch
INT
ignition
switch
OFF
SEL709C
Ohmmeter
EL-I
01
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