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AV-22
AUDIO
Revision: August 20072004 QX56
Terminals and Reference Value for BOSE Speaker Amp.EKS007KF
71 (B) 69 (W)Voice guide
signal (with
NAVI)Output ONPress the
"GUIDE/VOICE"
button.Only route guide and
operation guide are
not heard.
72 (W/B) GroundCD eject
signalInput ONOperate EJECT
button0V→5VCD will not eject from
audio unit.
73 (Y/B) GroundCD load sig-
nalInput ONOperate LOAD
button0V→5VCD will not load into
audio unit. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0171J
Te r m i n a l
(wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) Ground Battery Input – – Battery voltageSystem does not
work properly.
9 (SB) 10 (B/Y)Rear door
speaker LH
and rear door
tweeter LHOutput ONReceive audio
signalNo sound from
rear door speaker
LH or rear door
tweeter LH.
11 (O/L) 12 (R/L)Rear door
speaker RH
and rear door
tweeter RHOutput ONReceive audio
signalNo sound from
rear door speaker
RH or rear door
tweeter RH.
13 (L/W) 14 (L/R)Front door
speaker LH
and front
tweeter LHOutput ONReceive audio
signalNo sound from
front door speaker
LH or front tweeter
LH.
15 (W/B) 16 (L/B)Front door
speaker RH
and front
tweeter RHOutput ONReceive audio
signalNo sound from
front door speaker
RH or front tweeter
RH.
17 (B) Ground Ground – ON – – –
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
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AUDIO
AV-23
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AV
Revision: August 20072004 QX56
18 (V) 2 (R)Center
speakerOutput ONReceive audio
signalNo sound from
center speaker.
19 (W) 3 (B) Subwoofer Output ONReceive audio
signalNo sound from
subwoofer.
22
(W/G)GroundSubwoofer ON
signalInput ON – More than 6.5VSubwoofer does
not work properly.
24 (L) 23 (B/W)Audio sound
signal rear RHInput ONReceive audio
signalNo sound from
rear door speaker
RH or rear door
tweeter RH.
26 (BR) 25 (B/R)Audio sound
signal rear LHInput ONReceive audio
signalNo sound from
rear door speaker
LH or rear door
tweeter LH.
28 (Y) 27 (BR)Audio sound
signal front RHInput ONReceive audio
signalNo sound from
front door speaker
RH or front tweeter
RH.
30 (W) 29 (B)Audio sound
signal front LHInput ONReceive audio
signalNo sound from
front door speaker
LH or front tweeter
LH.
31 (G/W) GroundAmp. ON sig-
nalInput ON – More than 6.5VSystem does not
work properly. Terminal
(wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of
symptom
+–Ignition
switchOperation
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
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AV-24
AUDIO
Revision: August 20072004 QX56
Terminals and Reference Value for Rear Audio Remote Control UnitEKS007KG
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
2 (G) 1 (B)Audio sound
signal LHInput ONReceive audio
signalNo sound from LH
headphone channel.
4 (W) 3 (R)Audio sound
signal RHInput ONReceive audio
signalNo sound from RH
headphone channel.
5 – Shield – – – 0VInterference and dis-
tortion heard from
headphones or rear
audio remote control
unit switches not
operating properly.
6 (R/L) Ground Illumination Input ONLighting switch
ON12V
Rear audio remote
control unit does not
illuminate. Lighting switch
OFF0V
7 (LG) –Remote
control
ground–– – 0VRear audio remote
control unit switches
do not function.
8 (O) GroundRemote
control
enable sig-
nalInput ON Audio unit ON 5VRear audio remote
control unit does not
operate.
9 (V) GroundRemote
control AInput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
10 (P) GroundRemote
control BInput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
11 ( B R /
Y)GroundRemote
control CInput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
12 (L) GroundRemote
control DInput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
13 (V) GroundRemote
control
switch
power sup-
plyInput ON Audio unit ON 12VRear audio remote
control does not
operate.
15 (B) – Ground – ON – 0V –
SKIA0177E
SKIA0177E
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AUDIO
AV-25
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Revision: August 20072004 QX56
Terminals and Reference Value for AV SwitchEKS007KH
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) GroundBattery
powerInput OFF – Battery voltageSystem does not
work properly.
2 (V) Ground ACC signal Input ACC – Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON (position 1).Battery voltageAV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1). Turn lighting switch
OFF.Approx. 3.0V or less
4 (BR) GroundIllumination
control signalInput ONIllumination control
switch is operated
by lighting switch in
1st position.Changes between 0 and 12V.AV switch illumi-
nation cannot be
controlled.
5 (B) Ground Ground – ON – 0V –
6 (V) GroundCommunica-
tion signal (+)Input/
outputON –System does not
work properly.
7–Shield
ground–– – –
8 (LG) GroundCommunica-
tion signal (-)Input/
outputON –System does not
work properly.
12 (R) GroundRemote con-
trol AInput ONPress MODE
switch 0V
Steering wheel
audio controls
do not function. Press SEEK UP
switch0.75V
Press VOL UP
switch2V
Except for above 5V
13 (G) GroundRemote con-
trol BInput ONPress POWER
switch 0V
Steering wheel
audio controls
do not function. Press SEEK
DOWN switch0.75V
Press VOL DOWN
switch2V
Except for above 5V
14 (L) –Remote con-
trol ground–– – –Steering wheel
audio controls
do not function.
16 (W/B) GroundCD EJECT
signalOutput ONPressed 0V
CD eject does
not function.
Released 5V
SKIA0175E
SKIA0176E
Page 613 of 3371
AV-26
AUDIO
Revision: August 20072004 QX56
17 (Y/B) GroundCD LOAD
signalOutput ONPressed 0V
CD load does
not function.
Released 5V
24 (W/R) GroundVehicle
speed signalInput ON Vehicle is drivenSpeed sensitive
volume function
does not work
properly. Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltage
(Approx.)Example of
symptom
+–Ignition
switchOperation
SKIA0175E
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AUDIO
AV-27
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AV
Revision: August 20072004 QX56
AV Switch Self-Diagnosis FunctionEKS007KI
It can check ON/OFF operation of each switch in the AV switch and diagnose the input signals from the steer-
ing switch.
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “PAUSE/MUTE”
and “PREV” simultaneously for 3 seconds.
Then the self-diagnosis operates. A single beep indicates self-
diagnosis mode is active.
3. Press each switch and listen for beep.
NOTE:
CD player LOAD and EJECT buttons are not included in this test
and will not beep when pressed.
EXITING THE SELF-DIAGNOSIS MODE
Turn ignition switch OFF. Then the self-diagnosis ends.
DIAGNOSIS FUNCTION
It can check for continuity of the switches by sounding the beep when each AV switch and steering switch
is pressed.
It can check for continuity of harness between AV switch and steering switch.
WKIA1489E
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AV-28
AUDIO
Revision: August 20072004 QX56
Trouble DiagnosisEKS007KJ
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD
Before proceeding, confirm that other AV switch functions (except audio functions) operate. If not, refer to AV-
145, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)" .
Symptom Possible cause
Inoperative
Audio unit power circuit check. Refer to AV-30, "Power Supply Circuit
Inspection" .
Audio communication line check. Refer to AV-126, "Audio Communication
Line Check (Between Display Control Unit and Audio Unit)" .
AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, remove audio unit for repair.
Steering switch does not operate
Steering switch check. Refer to AV-32, "Steering Switch Check" .
AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, replace audio unit.
Audio information is not displayed on screen (with
NAVI)
Display unit check. Refer to AV-101, "Self-Diagnosis Mode (DCU)" .
All speakers do not sound
Audio unit
BOSE speaker amp. power supply and ground circuit check. Refer to AV- 3 0 ,
"Power Supply Circuit Inspection" .
BOSE speaker amp. ON signal
BOSE speaker amp.
One or several speakers do not sound
Front door speaker check. Refer to AV- 3 4 , "Sound Is Not Heard From Front
Door Speaker or Front Tweeter" .
Rear door speaker check. Refer to AV- 3 8 , "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter" .
Subwoofer check. Refer to AV-42, "Sound Is Not Heard From Subwoofer" .
Center speaker check. Refer to AV- 4 1 , "Sound Is Not Heard From Center
Speaker" .
Poor sound
Audio unit
BOSE speaker amp.
Speaker
Noisy
Audio unit
BOSE speaker amp.
Electrical equipment (generator, bonding wire, etc.)
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AUDIO
AV-29
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AV
Revision: August 20072004 QX56
FOR RADIO ONLY
NOTE:
1. The following noise results from variations in field strength, such as fading noise and multi-path noise, or
external noise from trains and other sources. It is not a malfunction.
Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-
tains or buildings blocking the signal.
Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the
antenna at a different time from the waves which reflect off mountains or buildings.
Symptom Possible cause
No sound
Audio unit
Antenna feeder, wiring or connections
Antenna amplifier, power supply, wiring or connections
Noisy
Audio unit
Audio unit case ground
Antenna feeder, wiring or connections
Antenna amplifier, power supply, wiring or connections
Noise prevention parts
Each electrical equipment
Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted
Audio unit power circuit check. Refer to AV- 3 0 , "Power Supply Cir-
cuit Inspection" .
Audio unit