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AV-92
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
DescriptionINFOID:0000000003882751
In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis ProcedureINFOID:0000000003901212
1.CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector and AV control unit connector.
3. Check continuity between display unit harness connector and AV control unit harness connector.
4. Check continuity between display unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1. Connect display unit connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector terminal and ground using an oscilloscope.
Is inspection result normal?
YES >> Replace AV control unit.
NO >> Replace display unit.
Display unit AV control unit
Continuity
Connector Terminal Connector Terminal
M49 20M12957 Existed
Display unit
GroundContinuity
Connector Terminal
M49 20 Not existed
(+)
(−) Condition Reference value Display unit
Connector Terminal
M49 20 Ground —
SKIB3598E

AV
AUX IMAGE SIGNAL CIRCUIT
AV-93
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
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AUX IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000003882753
Transmits the image signal of external device from auxiliary input jacks to AV control unit.
Diagnosis ProcedureINFOID:0000000003882754
1.CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect auxiliary input jacks connector and AV control unit connector.
3. Check continuity between auxiliary input jacks harness connector and AV control unit harness connector.
4. Check continuity between auxiliary input jacks harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK AUX IMAGE SIGNAL
1. Connect auxiliary input jacks connector and AV control unit connector.
2. Turn ignition switch ON.
3. Make AUX image signal being input.
4. Check signal between auxiliary input jacks harness connector using an oscilloscope.
Is inspection result normal?
YES >> Replace AV control unit.
NO >> Check that there is no malfunction in the external device.
Auxiliary input jacks AV control unit
Continuity
Connector Terminals Connector Terminals
M2537
M13066
Existed
874
Auxiliary input jacks
GroundContinuity
Connector Terminal
M253 7 Not existed
(+) (−)
Condition Reference value Auxiliary input jacks Auxiliary input jacks
Connector Terminal Connector Terminal
M253 7 M253 8 When AUX image is displayed.
SKIB2251J

AV-94
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
DISK EJECT SIGNAL CIRCUIT
DISK EJECT SIGNAL CIRCUIT
DescriptionINFOID:0000000003882755
The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.
Diagnosis ProcedureINFOID:0000000003901213
1.CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect multifunction switch connector and AV control unit connector.
3. Check continuity between multifunction switch harness connector and AV control unit harness connector.
4. Check continuity between multifunction switch harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Connect multifunction switch connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector and ground.
Is inspection result normal?
YES >> Replace preset switch.
NO >> Replace AV control unit.
Multifunction switch AV control unit
Continuity
Connector Terminal Connector Terminal
M125 14 M131 103 Existed
Multifunction switch
GroundContinuity
Connector Terminal
M125 14 Not existed
(+)
(−) Condition Reference value AV control unit
Connector Terminal
M131 103 GroundPressing the eject switch. 0 V
Except for above. 3.3 V

AV
REAR VIEW CAMERA POWER SUPPLY
AV-95
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
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REAR VIEW CAMERA POWER SUPPLY
DescriptionINFOID:0000000003882757
 Camera control unit outputs camera ON signal to rear view camera and inputs rear view camera image sig-
nal from rear view camera when the reverse signal is input.
 The camera control unit that inputs the camera image signal transmits the camera image signal to the AV
control unit.
Diagnosis ProcedureINFOID:0000000003901214
1.CHECK CONTINUITY CAMERA ON SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect camera control unit connector and rear view camera connector.
3. Check continuity between camera control unit harness connector and rear view camera harness connec-
tor.
4. Check continuity between camera control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VOLTAGE CAMERA ON SIGNAL
1. Connect camera control unit connector and rear view camera connector.
2. Turn ignition switch ON.
3. Check signal between camera control unit harness connector and ground.
Is inspection result normal?
YES >> Replace rear view camera.
NO >> Replace camera control unit.
Camera control unit Rear view camera
Continuity
Connector Terminal Connector Terminal
B2518T1031Existed
Camera control unit
GroundContinuity
Connector Terminal
B251 8 Not existed
(+)
(−) ConditionVo l ta g e
(Approx.) Camera control unit
Connector Terminal
B251 8 GroundSelector le-
ver in R posi-
tion. 6.0 V
Other than
selector le-
ver in R posi-
tion. 0 V

AV-96
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
CAMERA IMAGE SIGNAL CIRCUIT
CAMERA IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000003882759
 Camera control unit outputs camera ON signal to rear view camera and inputs rear view camera image sig-
nal from rear view camera when the reverse signal is input.
 The camera control unit that inputs the camera image signal transmits the camera image signal to the dis-
play unit.
Diagnosis ProcedureINFOID:0000000003901215
1.CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect camera control unit connector and AV control unit connector.
3. Check continuity between camera control unit harness connector and AV control unit harness connector.
4. Check continuity between camera control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK CAMERA IMAGE SIGNAL
1. Connect camera control unit connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between camera control unit harness connector using an oscilloscope.
Is inspection result normal?
YES >> Replace AV control unit.
NO >> Replace camera control unit.
Camera control unit AV control unit
Continuity
Connector Terminals Connector Terminals
B25111
M13064
Existed
12 65
Camera control unit
GroundContinuity
Connector Terminal
B251 12 Not existed
(+)
(−) Condition Reference value Camera control unit
Connector Terminal
B251 12 GroundWhen rear view camera
image is displayed.
SKIB2251J

AV
COMPOSITE IMAGE SIGNAL CIRCUIT
AV-97
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
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COMPOSITE IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000003882761
AV control unit that inputs the camera image signal and AUX image signal transmits the composite image sig-
nal to the display unit.
Diagnosis ProcedureINFOID:0000000003901216
1.CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO DISPLAY UNIT)
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and display unit connector.
3. Check continuity between AV control unit harness connector and display unit harness connector.
4. Check continuity between AV control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK COMPOSITE IMAGE SIGNAL (AV CONTROL UNIT TO DISPLAY UNIT)
1. Connect AV control unit connector and display unit connector.
2. Turn ignition switch ON.
3. Check signal between AV control unit harness connector using an oscilloscope.
Is inspection result normal?
YES >> Replace display unit.
NO >> Replace AV control unit.
AV control unit Display unit
Continuity
Connector Terminals Connector Terminals
M12936
M4915
Existed
37 5
AV control unit
GroundContinuity
Connector Terminal
M129 36 Not existed
(+) (−)
Condition Reference value AV c o n t r o l u n i t
Ground Connector Terminal
M129 36When AUX or camera image is dis-
played.
SKIB2251J

AV-98
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
STEERING ANGLE SENSOR SIGNAL CIRCUIT
STEERING ANGLE SENSOR SIGNAL CIRCUIT
DescriptionINFOID:0000000003939943
 Steering angle sensor signal 1, 2 detects the turning direction and quantity of the steering and transmits it to
the camera control unit.
 Steering angle sensor signal 3 detects the neutral position of the steering and transmits it to the camera con-
trol unit.
 Camera control unit performs the correction of neutral position with sensor signal 1, 2, 3 and vehicle speed
signal.
Diagnosis ProcedureINFOID:0000000003939944
1.CHECK CONTINUITY STEERING ANGLE SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect camera control unit connector and steering angle sensor connector.
3. Check continuity between camera control unit harness connector and steering angle sensor harness con-
nector.
4. Check continuity between camera control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SIGNAL SENSOR SIGNAL
1. Connect camera control unit connector.
2. Turn ignition switch ON.
3. Check voltage between camera control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 3.
NO >> Replace camera control unit.
3.CHECK SIGNAL SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Connect steering angle sensor connector.
Camera control unit Steering angle sensor
Continuity
Connector Terminals Connector Terminals
B25123
M303
Existed 24 6
25 8
Camera control unit
GroundContinuity
Connector Terminals
B25123
Not existed 24
25
(+)
(−)Vo l ta g e
(Approx.) Camera control unit
Connector Terminals
B25123
Ground 5.0 V 24
25

AV
STEERING ANGLE SENSOR SIGNAL CIRCUIT
AV-99
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
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3. Turn ignition switch ON.
4. Check signal between camera control unit harness connector and ground.
Is inspection result normal?
YES >> INSPECTION END
NO >> Replace steering angle sensor.
(+)
(−) Condition Reference value Camera control unit
Connector Terminals
B25123, 24 GroundTurn the steering to the right
A: Sensor signal 1
B: Sensor signal 2
Turn the steering to the left
A: Sensor signal 1
B: Sensor signal 2
25 GroundTurn the steering around the
neutral position
A: Sensor signal 3
B: Sensor signal 1
SKIB3827E
SKIB3828E
SKIB3829E

AV-100
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
STEERING SWITCH SIGNAL A CIRCUIT
STEERING SWITCH SIGNAL A CIRCUIT
DescriptionINFOID:0000000003939934
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000003939935
1.CHECK STEERING SWITCH SIGNAL A CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and spiral cable connector.
3. Check continuity between AV control unit harness connector and spiral cable harness connector.
4. Check continuity between AV control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable.
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.
Is inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit.
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-101, "
Component Inspection".
Is inspection result normal?
YES >> INSPECTION END
NO >> Replace steering switch.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M127 6 M33 24 Existed
AV c o n t r o l u n i t
GroundContinuity
Connector Terminal
M127 6 Not existed
(+) (−)
Vo l ta g e
(Approx.) AV control unit AV control unit
Connector Terminal Connector Terminal
M1276M12715 3.3 V

AV
STEERING SWITCH SIGNAL A CIRCUIT
AV-101
< COMPONENT DIAGNOSIS >[BASE AUDIO AND DISPLAY SYSTEM]
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Component InspectionINFOID:0000000003939936
Measure the resistance between the steering switch connector ter-
minals 14 to 17 and 15 to 17.
Standard
JSNIA0215GB
Steering switch
ConditionResistance
Ω Con-
nectorTe r m i -
nalCon-
nectorTe r m i -
nal
M30314
M303 17MENU DOWN switch
ON315 – 327
MENU UP switch ON 119 – 123
SOURCE switch ON 1
15VOL UP switch ON 119 – 123
VOL DOWN switch ON 1