Infiniti G35 (V35). Manual — part 138
NAVIGATION SYSTEM
AV-67
C
D
E
F
G
H
I
J
L
M
A
B
AV
Power Supply and Ground Circuit Inspection for Display Unit and NAVI Switch
NKS002G3
1.
CHECK FUSE
Check the following fuses of the display unit and NAVI switch.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate the cause of malfunction before installing new fuse. Refer to
PG-3, "POWER SUPPLY ROUTING CIRCUIT"
2.
CHECK POWER SUPPLY CIRCUIT
1.
Check voltage between display unit harness connector and
ground.
2.
Check voltage between NAVI switch harness connector and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check the following.
●
Harness for open or short between display unit and
fuse.
●
Harness for open or short between NAVI switch and fuse.
Unit
Terminals
Power source
Fuse No.
Connector
Terminal
Display unit
M35
21
Battery power
37
23
19
Ignition switch
ACC or ON
6
NAVI switch
M37
1
Unit
Terminals
OFF
ACC
ON
(+)
(–)
Connector
Terminal
Display
unit
M35
21
Ground
Battery
voltage
Battery
voltage
Battery
voltage
23
Battery
voltage
Battery
voltage
Battery
voltage
19
0 V
Battery
voltage
Battery
voltage
Unit
Terminals
OFF
ACC
ON
(+)
(–)
NAVI
switch
Connector
Terminal
Ground
0 V
Battery
voltage
Battery
voltage
M37
1
SKIA8543E
SKIA8544E
AV-68
NAVIGATION SYSTEM
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector.
3.
Check continuity between display unit harness connector and
ground.
4.
Disconnect NAVI switch connector.
5.
Check continuity between NAVI switch harness connector M37
terminal 7 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace harness.
Vehicle Speed Signal Inspection
NKS002G4
1.
CHECK VEHICLE SPEED OPERATION
Does speed meter operate normally?
YES or NO
YES
>> GO TO 2.
NO
>> Check combination meter trouble diagnosis. Refer to
DI-12, "Self-Diagnosis Mode of Combination
2.
CHECK HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect NAVI control unit connector and combination meter connector.
3.
Check continuity between NAVI control unit harness connector
(A) M58 terminal 66 and combination meter harness connector
(B) M19 terminal 14.
4.
Check continuity NAVI control unit harness connector (A) M58
terminal 66 and ground.
OK or NG
OK
>> GO TO 3.
NG
>>
●
Check harness for open or short between NAVI con-
trol unit and combination meter.
●
Check connector housings for disconnected or loose terminals.
Unit
Terminals
Continuity
Display unit
Connector
Terminal
Ground
M35
22
Yes
24
SKIA1897E
7 – Ground
: Continuity should exist.
SKIA2007E
66 – 14
: Continuity should exist.
66 – Ground
: Continuity should exist.
SKIB7261E
NAVIGATION SYSTEM
AV-69
C
D
E
F
G
H
I
J
L
M
A
B
AV
3.
CHECK VEHICLE SPEED SIGNAL
1.
Connect NAVI control unit connector and combination meter connector.
2.
Drive vehicle at a constant speed of 40 km/h (25 MPH).
3.
Check the signal between NAVI control unit harness connector
M58 terminal 66 and ground with CONSULT-Il or oscilloscope.
OK or NG
OK
>> Replace NAVI control unit.
NG
>> Check combination meter system. Refer to
Diagnosis Mode of Combination Meter"
Illumination Signal Inspection
NKS002G5
1.
CHECK TAIL LAMP OPERATION
When lighting switch is turned to 1st or 2nd position, does tail lamp illuminate?
YES or NO
YES
>> GO TO 2.
NO
>> Go to tail lamp trouble diagnosis. Refer to
LT-119, "Parking, License Plate, Side Marker and Tail
2.
CHECK ILLUMINATION SIGNAL
Check voltage between NAVI control unit harness connector and
ground.
OK or NG
OK
>> Replace NAVI control unit.
NG
>> Check harness for open or short between NAVI control unit and IPDM E/R. Refer to
Ignition Signal Inspection
NKS002G6
1.
CHECK FUSE
Make sure that the following fuses of the NAVI control unit.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
3, "POWER SUPPLY ROUTING CIRCUIT"
.
66 – Ground
: Refer to
Reference Value for NAVI Control
Unit"
.
SKIB7262E
Terminals
Lighting switch
position
Voltage (V)
(+)
(–)
Connector
Terminal
M58
61
Ground
1st or 2nd
position
Approx. 12 V
OFF
Approx. 0 V
SKIB7263E
Terminals
Power source
Fuse No.
Connector
Terminal
M58
63
Ignition switch
ON or START
12
AV-70
NAVIGATION SYSTEM
2.
CHECK IGNITION SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between NAVI control unit harness connector
and ground.
OK or NG
OK
>> Replace NAVI control unit.
NG
>> Repair harness or connector.
Reverse Signal Inspection (With A/T)
NKS002G7
1.
CHECK REVERSE LAMP
1.
Turn ignition switch ON.
2.
With the A/T selector lever in R position, is the indicator turned on?
YES or NO
YES
>> GO TO 2.
NO
>> Check back-up lamp system. Refer to
2.
CHECK REVERSE SIGNAL
1.
With the A/T selector lever in R position.
2.
Check voltage between NAVI control unit harness connector
and ground.
OK or NG
OK
>> Replace NAVI control unit.
NG
>> Check harness for open or short between NAVI control unit and back-up lamp relay.
Reverse Signal Inspection (With M/T)
NKS002G8
1.
CHECK REVERSE LAMP
1.
Turn ignition switch ON.
2.
With the selection lever in R-position, are the reverse lamps turned on?
YES or NO
YES
>> GO TO 2.
NO
>> Check back-up lamp system. Refer to
Terminals
Ignition switch position
(+)
(–)
Connector
Terminal
ON
OFF
M58
63
Ground
Battery voltage
Approx. 0 V
SKIB7264E
Terminals
A/T selector
lever position
Voltage (V)
(+)
(–)
Connector
Terminal
M58
65
Ground
R position
Battery voltage
Other than
R position
Approx. 0 V
SKIB7265E
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