2004 INFINITI QX56 Factory Service Manual

Page 713 of 3371

INFINITI QX56 2004  Factory Service Manual AV-126
NAVIGATION SYSTEM
Revision: August 20072004 QX56
3. CHECK SELF-DIAGNOSIS OF DCU
1. Replace NAVI control unit.
2. Connect NAVI control unit connector and display control unit connector.
3. Turn

Page 714 of 3371

INFINITI QX56 2004  Factory Service Manual NAVIGATION SYSTEM
AV-127
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
3. CHECK 1: AUDIO-TX COMMUNICATION SIGNAL
1. Connect display control unit connector.
2. Turn ignition switch ON.
3. Ch

Page 715 of 3371

INFINITI QX56 2004  Factory Service Manual AV-128
NAVIGATION SYSTEM
Revision: August 20072004 QX56
6. CHECK 4: AUDIO-RX COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check signal between display control unit harness connector
M95 termina

Page 716 of 3371

INFINITI QX56 2004  Factory Service Manual NAVIGATION SYSTEM
AV-129
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
3. CHECK 2: COMMUNICATION SIGNAL (DSP–DCU)
1. Turn ignition switch OFF.
2. Disconnect display control unit connector

Page 717 of 3371

INFINITI QX56 2004  Factory Service Manual AV-130
NAVIGATION SYSTEM
Revision: August 20072004 QX56
AV Communication Line Check (Between Display Control Unit and AV Switch)EKS007ME
1. CHECK AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disc

Page 718 of 3371

INFINITI QX56 2004  Factory Service Manual NAVIGATION SYSTEM
AV-131
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
CAN Communication Line CheckEKS007MF
1. CHECK MONITOR DESCRIPTION
1. Start display control unit self-diagnosis. Refer

Page 719 of 3371

INFINITI QX56 2004  Factory Service Manual AV-132
NAVIGATION SYSTEM
Revision: August 20072004 QX56
2. CHECK 2: DVD-ROM
1. Check DVD-ROM for dirt, scratches and warpage.
OK or NG
OK >> GO TO 3.
NG >> Replace DVD-ROM map.
3. CHECK 3: DVD-ROM
1.

Page 720 of 3371

INFINITI QX56 2004  Factory Service Manual NAVIGATION SYSTEM
AV-133
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
2. CHECK HORIZONTAL SYNCHRONIZATION SIGNAL
1. Connect display control unit connector and display unit connector.
2. Tu