Nissan Pathfinder (2012 year). Instruction — part 31
AV-66
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
POWER SUPPLY AND GROUND CIRCUIT
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair AV control unit ground.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000007347631
Regarding Wiring Diagram information, refer to
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch to ACC.
2. Check voltage between display unit harness connector M93 and
ground.
Does specified voltage exist?
YES
>> GO TO 3
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the display unit connector M93 and the AV control
unit connector M133.
3. Check continuity between the display unit harness connector
M93 (A) and the AV control unit connector M133 (B).
4. Check continuity between the display unit harness connector M93 (A) and ground.
Are continuity results as specified?
YES
>> Check AV control unit power and ground supply. Refer to
AV-65, "AV CONTROL UNIT : Diagnosis
.
NO
>> Repair harness or connector.
(+)
(-)
Continuity
Connector
Terminal
M131
20
Ground
Yes
M133
54
M134
68
M135
85
Signal name
Connector
Terminal
Ignition switch
position
Value (Approx.)
Inverter VCC
M93
2
ACC
9V
Signal VCC
3
ALNIA0317GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
2
M133
59
Yes
3
47
A
—
Continuity
Connector
Terminal
M93
2
Ground
No
3
ALNIA0318GB
August 2012
2012 Pathfinder
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-67
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check continuity between display unit harness connector and
ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Diagnosis Procedure
INFOID:0000000007347632
Regarding Wiring Diagram information, refer to
1.
CHECK FUSE
Check that the fuse of the AC and AV switch assembly is not blown.
Is the fuse OK?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1. Disconnect A/C and AV switch assembly connector M98.
2. Check voltage between the A/C and AV switch assembly con-
nector M98 and ground.
Are the voltage results as specified?
YES
>> GO TO 3
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Connector
Terminal
—
Continuity
M93
1
Ground
Yes
ALNIA0319GB
Unit
Terminal
Signal name
Fuse No.
A/C and AV switch assembly
2
Ignition switch ACC or ON
4
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M98
2
Ground
0V
Battery
voltage
Battery
voltage
ALNIA0315GB
August 2012
2012 Pathfinder
AV-68
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between A/C and AV switch assembly harness
connector M98 and ground.
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair harness or ground.
REAR VIEW CAMERA
REAR VIEW CAMERA : Diagnosis Procedure
INFOID:0000000007347633
Regarding Wiring Diagram information, refer to
1.
CHECK POWER SUPPLY CIRCUIT (REAR VIEW CAMERA SIDE)
NOTE:
Apply parking brakes before proceeding.
1. Turn ignition switch ON.
2. Shift transmission into reverse.
3. Check voltage between rear view camera harness connector D551 terminal 2 and ground.
Is voltage reading approximately 12 volts?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1. Turn ignition switch OFF.
2. Disconnect rear view camera and AV control unit connectors.
3. Check continuity between rear view camera harness connector D551 terminal 2 and AV control unit har-
ness connector M134 terminal 105.
4. Check continuity between rear view camera harness connector D551 terminal 2 and ground.
Are continuity test results as specified?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK REVERSE POSITION INPUT SIGNAL
1. Turn ignition switch ON.
2. Shift transmission into reverse.
3. Check voltage between AV control unit harness connector M134 terminal 105 and ground.
Connector
Terminal
—
Continuity
M98
1
Ground
Yes
ALNIA0316GB
(+)
(-)
Transmission
position
Value (Approx.)
Connector
Terminal
D551
2
Ground
Reverse
12V
Connector
Terminal
Connector
Terminal
Continuity
D551
2
M134
105
Yes
Connector
Terminal
—
Continuity
D551
2
Ground
No
August 2012
2012 Pathfinder
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-69
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is voltage reading approximately 12 volts?
YES
>> Replace AV control unit. Refer to
AV-114, "Removal and Installation"
NO
>> Check harness for open or short between AV control unit and back-up lamp relay.
4.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear view camera harness connector.
3. Check continuity between rear view camera harness connector D551 terminal 1 and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
(+)
(-)
Transmission
position
Value (Approx.)
Connector
Terminal
M134
105
Ground
Reverse
12V
Connector
Terminal
—
Continuity
D551
1
Ground
Yes
August 2012
2012 Pathfinder
AV-70
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
RGB (R: RED) SIGNAL CIRCUIT
RGB (R: RED) SIGNAL CIRCUIT
Description
INFOID:0000000007347634
Transmit the image displayed with AV control unit with RGB signal to the display unit.
Diagnosis Procedure
INFOID:0000000007347635
Regarding Wiring Diagram information, refer to
1.
CHECK CONTINUITY RGB (R: RED) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M133.
3. Check continuity between display unit harness connector M93
(A) terminal 17 and AV control unit harness connector M133 (B)
terminal 40.
4. Check continuity between display unit harness connector M93
(A) terminal 17 and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK RGB (R: RED) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M133.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 17 and ground.
Are the voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-116, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-114, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
17
M133
40
Yes
A
—
Continuity
Connector
Terminal
M93
17
Ground
No
ALNIA0382GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
17
Ground
Receive
audio sig-
nal
ALNIA0383GB
SKIB2238J
August 2012
2012 Pathfinder
AV
RGB (G: GREEN) SIGNAL CIRCUIT
AV-71
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
RGB (G: GREEN) SIGNAL CIRCUIT
Description
INFOID:0000000007347636
Transmit the image displayed with AV control unit with RGB signal to the display unit.
Diagnosis Procedure
INFOID:0000000007347637
Regarding Wiring Diagram information, refer to
1.
CHECK CONTINUITY RGB (G: GREEN) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M133.
3. Check continuity between display unit harness connector M93
(A) terminal 6 and AV control unit harness connector M133 (B)
terminal 39.
4. Check continuity between display unit harness connector M93
(A) terminal 6 and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK RGB (G: GREEN) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M133.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 6 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-116, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-114, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
6
M133
39
Yes
A
—
Continuity
Connector
Terminal
M93
6
Ground
No
ALNIA0384GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
6
Ground
Receive
audio sig-
nal
ALNIA0385GB
SKIB2236J
August 2012
2012 Pathfinder
AV-72
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
RGB (B: BLUE) SIGNAL CIRCUIT
RGB (B: BLUE) SIGNAL CIRCUIT
Description
INFOID:0000000007347638
Transmit the image displayed with AV control unit with RGB signal to the display unit.
Diagnosis Procedure
INFOID:0000000007347639
Regarding Wiring Diagram information, refer to
1.
CHECK CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M133.
3. Check continuity between display unit harness connector M93
(A) terminal 18 and AV control unit harness connector M133 (B)
terminal 38.
4. Check continuity between display unit harness connector M93
(A) terminal 18 and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK RGB (B: BLUE) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M133.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 18 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-116, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-114, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
18
M133
38
Yes
A
—
Continuity
Connector
Terminal
M93
18
Ground
No
ALNIA0386GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
18
Ground
Receive
audio sig-
nal
ALNIA0387GB
SKIB2237J
August 2012
2012 Pathfinder
AV
RGB SYNCHRONIZING SIGNAL CIRCUIT
AV-73
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
RGB SYNCHRONIZING SIGNAL CIRCUIT
Description
INFOID:0000000007347640
Transmit the RGB synchronizing signal to the display unit so as to synchronize the RGB image displayed with
AV control unit.
Diagnosis Procedure
INFOID:0000000007347641
Regarding Wiring Diagram information, refer to
1.
CHECK CONTINUITY RGB SYNCHRONIZING SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M133.
3. Check continuity between display unit harness connector M93
(A) terminal 19 and AV control unit harness connector M133 (B)
terminal 41.
4. Check continuity between display unit harness connector M93
(A) terminal 19 and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK RGB SYNCHRONIZING SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M133.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 19 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-116, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-114, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
19
M133
41
Yes
A
—
Continuity
Connector
Terminal
M93
19
Ground
No
ALNIA0388GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
19
Ground
Receive
audio sig-
nal
ALNIA0389GB
SKIB3603E
August 2012
2012 Pathfinder
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