AV-122
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
Special Note for Trouble DiagnosisNKS003KD
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV- 1 5 2 , "
Example of Symptoms Possible No Malfunction" .
On Board Self-Diagnosis FunctionNKS003KE
DESCRIPTION
Trouble diagnosis function of navigation system has a Self Diagnosis mode by automatic operation and a
Confirmation/Adjustment mode by manual operation.
Self Diagnosis mode checks for connections between the units constituting this system, analyzes each
individual unit at the same time, and displays the results on the display.
Confirmation/Adjustment mode displays trouble diagnosis that require an operation and a judgment by a
human (auto-decision cannot be performed by the system), confirmation of preset value, and an error his-
tory.
DIAGNOSIS ITEM
Mode Description
Self Diagnosis (DCU)
Display control unit diagnosis
Analyzes connection between the display control unit and each unit, and
operation of each unit.
Self Diagnosis (NAVI)
NAVI control unit diagnosis (DVD-ROM drive will not be diagnosed
when no DVD-ROM is in it.).
Analyzes connection between the NAVI control unit and the GPS
antenna.
Confirmation/
Adjustment Display Diagnosis
Color tone and shading of the display control unit-generated image can be
checked by the display of a color bar and a gray scale.
Vehicle Signals Diagnosis of signals that are input to display control unit can be performed
for Vehicle Speed, IGN, Reverse and Light.
Auto Climate Control Refer to ATC-52, "
Self-diagnosis Function" .
Navigation Display Diagnosis
Color tone and shading of the NAVI control unit-generated image can be
checked by the display of a color bar and a gray scale.
Vehicle Signals Diagnosis of signals that are input to NAVI control unit can be performed
for Vehicle speed, Lights, Ignition and Reverse.
Navigation Steering
Angle
Adjustment This mode is used to correct difference between actual turning angle of a
vehicle and turning angle of the vehicle mark on the display.
Speed
Calibration Under ordinary conditions, the navigation system distance measuring
function will automatically compensate for minute decreases in wheel and
tire diameter caused by tire wear or low-pressure. Speed Calibration can
immediately restore system accuracy in cases such as when distance cal-
ibration is needed because of the use of tire chains.
Error History Malfunctions that occurred in the past are displayed, along with the num-
ber of times each has occurred. Time and location when/where the errors
occurred are also displayed.
Delete Unit Connection Log Erase the connection history of unit and error history.
CAN DIAG SUPPOPT MONITOR The transmitting/receiving of CAN communication can be monitored.
AV-142
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
4. CHECK DISPLAY POWER SUPPLY AND GROUND CIRCUIT (INVERTER AND SIGNAL)
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector M75 terminals 2 and 5.
4. Check voltage between display control unit harness connector M75 terminals 4 and 7.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
5. CHECK DISPLAY CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
1. Check voltage between display control unit harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect display control unit connector.
4. Check continuity between display control unit harness connector M75 terminal 3 and ground.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness or connector. 2 – 5 : Approx. 9 V
SKIB7841E
4 – 7 : Approx. 9 V
SKIB7842E
Terminals
OFF ACC ON
(+)
(–)
Connector Terminal
M75 1
Ground Battery
voltage Battery
voltage Battery
voltage
10 0 V Battery
voltage Battery
voltage
3 – Ground : Continuity should exist.
SKIB7843E
SKIB7844E
NAVIGATION SYSTEM AV-143
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2006 December 2006 FX35/FX45
Status Screen for Audio and A/C Is Not Displayed When Showing Map ScreenNKS003KQ
Symptom: Status screen is not displayed in the lower portion of map screen when operating audio system and
A/C system.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and display harness connector (B)
M63 terminals 20, 8.
4. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage waveform between display control unit harness connector M76 terminal 53 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace display.
3. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
Check voltage waveform between display control unit harness con-
nector M76 terminal 55 and ground with CONSULT-II or oscillo-
scope.
OK or NG
OK >> Replace display control unit.
NG >> Replace display. 53 – 20 : Continuity should exist.
55 – 8 : Continuity should exist.
53, 55 – Ground : Continuity should not exist.
SKIB7850E
53 – Ground:
SKIB7851ESKIB3598E
55 – Ground:
SKIB7852ESKIB3601E
AV-146
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
2. CHECK RGB SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Start Confirmation/Adjustment mode. Refer to AV- 1 2 9 , "
Confirmation/Adjustment Mode" .
4. Display color bar by selecting “Display Color Spectrum Bar” on Display Diagnosis screen. Refer to AV-
130, "DISPLAY DIAGNOSIS" .
5. Check the malfunctioning circuit according to the symptoms.
Light blue (Cyan) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 50 and ground with CONSULT-II or
oscilloscope.
Purple (Magenta) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 52 and ground with CONSULT-II or
oscilloscope.
Yellow tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 54 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit. 50 – Ground:
SKIB7856ESKIB7769E
52 – Ground:
SKIB7857ESKIB7770E
54 – Ground:
SKIB7858ESKIB7771E
AV-148
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
2. CHECK RGB SIGNAL
1. Connect NAVI control unit and display control unit connectors.
2. Turn ignition switch ON.
3. Start Confirmation/Adjustment (Navigation) mode. Refer to AV- 1 2 9 , "
Confirmation/Adjustment Mode" .
4. Display color bar by selecting “Color Spectrum bar” on Display Diagnosis screen. Refer to AV- 1 3 1 , "
Dis-
play Diagnosis" .
5. Check the malfunctioning circuit according to the symptoms.
Light blue (Cyan) tinged screen
Check voltage waveform between NAVI control unit harness
connector B207 terminal 44 and ground with CONSULT-II or
oscilloscope.
Purple (Magenta) tinged screen
Check voltage waveform between NAVI control unit harness
connector B207 terminal 45 and ground with CONSULT-II or
oscilloscope.
Yellow tinged screen
Check voltage waveform between NAVI control unit harness
connector B207 terminal 46 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> Replace display control unit.
NG >> Replace NAVI control unit. 44 – Ground:
SKIB6997ESKIB7360E
45 – Ground:
SKIB6998ESKIB7361E
46 – Ground:
SKIB6999ESKIB7362E
NAVIGATION SYSTEM AV-149
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2006 December 2006 FX35/FX45
RGB Image Is RollingNKS003KU
Symptom: Map screen is rolling.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit and display control unit connectors.
3. Check continuity between NAVI control unit harness connector (A) B207 terminal 48 and display control unit harness connector
(B) M76 terminal 43.
4. Check continuity between NAVI control unit harness connector (A) B207 terminal 48 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SYNCHRONIZING SIGNAL
1. Connect NAVI control unit and display control unit connectors.
2. Turn ignition switch ON.
3. When displaying RGB image, check voltage waveform between NAVI control unit harness connector B207 terminal 48 and
ground with CONSULT-II or oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace NAVI control unit.
3. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check continuity between display control unit harness connector (A) M76 terminal 56 and display harness connector (B) M63 ter-
minal 19.
4. Check continuity between display control unit harness connector (A) M76 terminal 56 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector. 48 – 43 : Continuity should exist.
48 – Ground : Continuity should not exist.
SKIB7862E
48 – Ground:
SKIB7001ESKIB3603E
56 – 19 : Continuity should exist.
56 – Ground : Continuity should not exist.
SKIB7863E
AV-150
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
4. CHECK RGB SYNCHRONIZING SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. When displaying RGB image, check voltage waveform between display control unit harness connector M76 terminal 56 and
ground with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
Values for All Items in The TRIP Screen Do Not ChangeNKS003KV
Symptom: Values for items, “Elapsed Time”, “Driving Distance” and “Average Speed” in the TRIP screen do
not change. FUEL ECONOMY screen is not displayed when pressing “TRIP” button.
1. CHECK DISPLAY CONTROL UNIT IGNITION SIGNAL
Select “Vehicle Signals” in Confirmation/Adjustment mode, and check the ignition signal inputting to display
control unit. Refer to AV- 1 3 0 , "
VEHICLE SIGNALS" .
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit ignition signal circuit, and repair malfunctioning part.
Values for Items, “Driving Distance” and “Average Speed” Do Not ChangeNKS003KW
Symptom: Values for Items, "Driving Distance" and "Average Speed" do not change. (The Value for "Elapsed
Time" Changes.)
1. CHECK DISPLAY CONTROL UNIT VEHICLE SPEED SIGNAL
Select “Vehicle Signals” in Confirmation/Adjustment mode, and check the vehicle speed signal inputting to dis-
play control unit. Refer to AV- 1 3 0 , "
VEHICLE SIGNALS" .
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit vehicle speed signal circuit, and repair malfunctioning part.
Values for All Items in The FUEL ECONOMY Screen Do Not ChangeNKS003KX
Symptom: Values for items, “Average Fuel Economy” and “Distance to Empty” in the FUEL ECONOMY screen
do not change.
1. CHECK CONDITION
Check if values for all items in the TRIP screen change properly.
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part. Refer to AV- 1 5 0 , "
Values for All Items in The TRIP Screen Do Not
Change" or AV- 1 5 0 , "Values for Items, “Driving Distance” and “Average Speed” Do Not Change"
.
56 – Ground:
SKIB7864ESKIB3603E
NAVIGATION SYSTEM AV-151
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2006 December 2006 FX35/FX45
2. CHECK CAN COMMUNICATION
Check CAN communication. Refer to AV- 1 3 8 , "
CAN Communication Check" .
OK or NG
OK >> Replace display control unit.
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO LAN-3, "
Precautions When
Using CONSULT-II" .
Voice Guidance Is Not HeardNKS003KY
Symptom: Voice guidance does not sound at route guidance.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit and audio unit connectors.
3. Check continuity between NAVI control unit harness connector (A) B208 terminals 12, 14 and audio unit harness connector (B)
M60 terminals 36, 34.
4. Check continuity between NAVI control unit harness connector (A) B208 terminals 12, 14 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK VOICE GUIDANCE SIGNAL
1. Connect NAVI control unit and audio unit connectors.
2. Turn ignition switch ON.
3. Check voltage waveform between NAVI control unit harness connector B208 terminals 12 and 14 with CONSULT-II or oscillo-
scope.
OK or NG
OK >> Replace audio unit.
NG >> Replace NAVI control unit. 12 – 36 : Continuity should exist.
14 – 34 : Continuity should exist.
12, 14 – Ground : Continuity should not exist.
SKIB7865E
12 – 14:
SKIB7003ESKIB3609E