Service Manual - Page 142

For 1987 300ZX.

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STEERING WHEEL SWITCH SYSTEM
Receiver
Check
1
Remove
luggage
box.
2.
Remove
receiver
with
harness
connected.
3
Turn
ignition
switch
to
ON.
4.
Check
voltage
between
terminals
referring
to
the
chart
below
OFF
Check item
Approx
5
IG
ACC
-
Power source input
Power source output for head
amplifier and slip ring
Output for A
S
C
D
relay
OFF
Output for AS
C
D
control
unit
~
Approx
5
Output
for
audio system
(Check voltage while
operating the
SW.
PLAY,
SCAN or FMIAM on the
steering wheel switch
)
OFF
AMIFM switch ON
OFF
SEL66OE
-
Approx
5
0
Approx
5
Voltmeter terminal
0
0
0
0
0
0
-
-
Switch condition Specified voltage [VI
Approx
12
I
Approx
12
I
AS
C
D
main switch ON
I
0
OFF
I
ADDrox
5
ACCEL switch ON
I
EL-
1
42
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