Infiniti M35/M45 Y50. Manual — part 185
TROUBLE DIAGNOSIS
AV-117
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
AV
2.
CHECK HARNESS BETWEEN AV (NAVI) CONTROL UNIT AND MIC.
1.
Turn ignition switch OFF.
2.
Disconnect AV (NAVI) control unit connector and MIC. connector.
3.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 6, 7, 8 and MIC. harness connector (B)
R52 terminals 4, 2, 1.
4.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 6, 7, 8 and ground.
OK or NG
OK >> GO
TO
3.
NG
>> Repair harness or connector.
3.
CHECK MIC. POWER SUPPLY
1.
Connect AV (NAVI) control unit and MIC. connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV (NAVI) control unit harness connec-
tor M78 terminals 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace AV (NAVI) control unit.
4.
CHECK MIC. SIGNAL
1.
Check signal between AV (NAVI) control unit harness connector
M78 terminals 8 and 7.
OK or NG
OK
>> Replace AV (NAVI) control unit.
NG
>> Replace MIC.
THE SCREEN IS NOT SWITCHED BY PRESSING THE STEERING SWITCH
Refer to
AV-118, "Steering Switch Cannot Be Operated"
6 – 4
: Continuity should exist.
7 – 2
: Continuity should exist.
8 – 1
: Continuity should exist.
6, 7, 8 – Ground
: Continuity should not exist.
SKIB4632E
6 – 7
: Approx. 5 V
SKIB4633E
8 – 7:
Give a voice
SKIB4634E
PKIB5037J
AV-118
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
TROUBLE DIAGNOSIS
Steering Switch Cannot Be Operated
NKS0049A
NONE OF THE OPERATIONS WORK.
1.
CHECK HARNESS
1.
Check continuity between spiral cable harness connector (A)
M303 terminal 17 and audio unit harness connector (B) M76 ter-
minal 15.
OK or NG
OK
>> Replace steering switch.
NG
>> Check spiral cable. If the malfunction is detected, repair
the harness and connector.
“ENTER”, “MENU UP-DOWN”, AND “SOURCE” SWITCHES ARE NOT OPERATED
1.
CHECK HARNESS
1.
Check continuity between spiral cable harness connector (A)
M303 terminal 20 and audio unit harness connector (B) M76 ter-
minal 6.
2.
Check continuity between spiral cable harness connector (A)
M303 terminal 20 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check spiral cable. If the malfunction is detected, repair
the harness and connector.
2.
CHECK STEERING SWITCH SIGNAL A
1.
Turn ignition switch ON.
2.
Check voltage between audio unit harness connector M76 ter-
minals 6 and 15
OK or NG
OK
>> Replace steering switch.
NG
>> Replace audio unit.
17 – 15
: Continuity should exist.
SKIB6278E
20 – 6
: Continuity should exist.
20 – Ground
: Continuity should not exist.
SKIB4636E
6 – 15
: Approx. 5 V
SKIB4637E
TROUBLE DIAGNOSIS
AV-119
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
AV
“PTT/TEL”, “BACK”, AND “VOLUME CONTROL” SWITCHES ARE NOT OPERATED
1.
CHECK HARNESS
1.
Check continuity between spiral cable harness connector (A)
M303 terminal 16 and audio unit harness connector (B) M76 ter-
minal 16.
2.
Check continuity between spiral cable harness connector (A)
M303 terminal 16 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check spiral cable. If the malfunction is detected, repair
the harness and connector.
2.
CHECK STEERING SWITCH SIGNAL B
1.
Turn ignition switch ON.
2.
Check voltage between audio unit harness connector M76 ter-
minals 16 and 15
OK or NG
OK
>> Replace steering switch.
NG
>> Replace audio unit.
The Hands-Free Phone Cannot Be Used
NKS0049B
THE VOICE CANNOT BE HEARD
1.
CHECK HARNESS AV (NAVI) CONTROL UNIT AND AUDIO UNIT
1.
Disconnect AV (NAVI) control unit connector and audio unit connector.
2.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 10, 11 and audio unit harness connec-
tor (B) M77 terminals 30, 31.
3.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 10, 11 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connector.
16 – 16
: Continuity should exist.
16 – Ground
: Continuity should not exist.
SKIB4638E
16 – 15
: Approx. 5 V
SKIB4639E
10 – 30
: Continuity should exist.
11 – 31
: Continuity should exist.
10, 11 – Ground
: Continuity should not exist.
SKIB4640E
AV-120
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
TROUBLE DIAGNOSIS
2.
CHECK TEL VOICE SIGNAL
1.
Connect AV (NAVI) control unit connector and audio unit connector.
2.
Turn ignition switch ON.
3.
Check signal between AV (NAVI) control unit harness connector
M78 terminals 10 and 11
OK or NG
OK
>> Replace audio unit.
NG
>> Replace AV (NAVI) control unit.
THE VOICE CANNOT BE TRANSMITTED
Refer to
AV-116, "THE SCREEN IS SWITCHED BY PRESSING THE STEERING SWITCH"
.
Voice Guidance Is Not Heard (Base System)
NKS0049C
1.
CHECK HARNESS BETWEEN AV (NAVI) CONTROL UNIT AND AUDIO UNIT
1.
Disconnect AV (NAVI) control unit connector and audio unit connector.
2.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 12, 14 and audio unit harness connec-
tor (B) M77 terminals 32, 33.
3.
Check continuity between AV (NAVI) control unit harness con-
nector (A) M78 terminals 12, 14 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connector.
2.
CHECK VOICE GUIDANCE SIGNAL
1.
Connect AV (NAVI) control unit connector and audio unit connector.
2.
Turn ignition switch ON.
3.
Push the voice button.
4.
Check signal between AV (NAVI) control unit harness connector
M78 terminals 12 and 14.
OK or NG
OK
>> Replace AV (NAVI) control unit.
NG
>> Replace audio unit.
10 – 11:
When inputting TEL voice
SKIB4641E
SKIB3609E
12 – 32
: Continuity should exist.
14 – 33
: Continuity should exist.
12, 14 – Ground
: Continuity should not exist.
SKIB4702E
12 – 14:
SKIB4645E
SKIB3609E
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