K Electrical AIR BAG Service Manual - page 19
AUDIO
AV-19
C
D
E
F
G
H
I
J
L
M
A
B
AV
Terminals and Reference Value for Audio Unit (Except Bose)
EKS001SM
Terminal No.
Item
Signal
input/
output
Condition
Voltage
Example of symp-
tom
+
–
Ignition
switch
Operation
1 (L/R)
Ground
Audio sound
signal front
LH (–)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
front door speaker
LH or tweeter LH.
2 (L/W)
Ground
Audio sound
signal front
LH (+)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
front door speaker
LH or tweeter LH.
3 (L/B)
Ground
Audio sound
signal front
RH (–)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
front door speaker
RH or tweeter RH.
4 (W/B)
Ground
Audio sound
signal front
RH (+)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
front door speaker
RH or tweeter RH.
5 (G)
Ground
Antenna
signal
Input
ON
–
Approximately 5.5 volts.
System does not
work properly.
6 (Y/G)
Ground
Battery
Input
–
–
Battery voltage.
System will not
work properly.
7 (R/Y)
Ground
Illumination
control
Input
ON
Light switch ON
(1st position)
1V
→
5V
Audio unit illumi-
nation does not
function when
lighting switch is
ON (position 1).
8 (R/L)
Ground
Light switch
Input
ON
Light switch ON
(1st position)
Approximately 5.5 volts.
Audio unit illumi-
nation does not
function when
lighting switch is
ON (position 1).
10 (PU)
Ground
ACC
Input
ON
Ignition switch
ACC or ON
Battery voltage.
System does not
work properly.
13
(B/Y)
Ground
Audio sound
signal rear LH
(–)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
rear speaker LH.
14
(G/Y)
Ground
Audio sound
signal rear LH
(+)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
rear speaker LH.
15 (R)
Ground
Audio sound
signal rear
RH (–)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
rear speaker RH.
16 (L)
Ground
Audio sound
signal rear
RH (+)
Output
ON
Receive audio
signal
Approximately 5.5 volts.
No sound from
rear speaker RH.
*22 (P)
Ground
Speed signal
Input
ON
Vehicle speed
sensor rotating
Voltage increases as vehicle
speed sensor rotates faster
Speed dependent
volume control
does not function.
*26
(R/W)
–
Remote
control A
–
–
–
Refer to
AV-22, "Steering Wheel
Audio Control Switch Resistance
Check"
.
Steering wheel
audio controls do
not function.
*27 (G)
–
Remote
control B
–
–
–
Refer to
AV-22, "Steering Wheel
Audio Control Switch Resistance
Check"
.
Steering wheel
audio controls do
not function.
*29 (L)
–
Remote
control
ground
–
–
–
Refer to
AV-22, "Steering Wheel
Audio Control Switch Resistance
Check"
.
Steering wheel
audio controls do
not function.