2005 INFINITI QX4 Factory Service Manual

open hood oil viscosity catalytic converter coolant reservoir oil capacities lane assist

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INFINITI QX4 2005 Factory Service Manual DI-66
REAR SONAR SYSTEM
Revision: October 20052005 QX56
Preliminary CheckEKS00BD9
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown rear sonar system fuse.
Refer to DI-61, "

Page 1170 of 3419

INFINITI QX4 2005 Factory Service Manual REAR SONAR SYSTEM
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Revision: October 20052005 QX56
Symptom Chart EKS00BDA
Symptom Repair order
When the rear sonar system OFF switch is OFF, the indicator
lamp does not

REAR SONAR SYSTEM
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Symptom Chart EKS00BDA
Symptom Repair order
When the rear sonar system OFF switch is OFF, the indicator
lamp does not light and the buzzer does not sound.1. Check rear sonar system OFF switch for malfunction. Refer to
DI-68, "
REAR SONAR SYSTEM OFF SWITCH" .
2. Check rear sonar system OFF switch ground circuit.
3. Check harness and connections between rear sonar system
OFF switch and sonar control unit.
4. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
When the rear sonar system OFF switch is OFF, the indicator
lamp does not light but buzzer sounds.1. Check rear sonar system OFF indicator for malfunction. Refer
to DI-68, "
REAR SONAR SYSTEM OFF INDICATOR" .
2. Check harness and connections between rear sonar system
OFF indicator and sonar control unit.
3. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
When the rear sonar system OFF switch is OFF, the sonar
buzzer does not sound but indicator lamp illuminates.1. Check sonar buzzer. Refer to DI-68, "
SONAR BUZZER" .
2. Check harness and connections between sonar buzzer and
sonar control unit.
3. Replace sonar control unit. Refer to: DI-68, "
SONAR CON-
TROL UNIT" .
When rear sonar system OFF switch is ON, the rear sonar sys-
tem OFF indicator lamp lights up and the sonar buzzer sounds
intermittently (for about 4 seconds).1. Check harness between rear sonar sensors and sonar control
unit for an open condition.
2. Check rear sonar sensors for malfunction.
3. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
The rear sonar system operates with the rear sonar system OFF
switch OFF.1. Check rear sonar system OFF switch for malfunction. Refer to
DI-68, "
REAR SONAR SYSTEM OFF SWITCH" .
2. Check rear sonar system OFF switch ground circuit.
3. Check harness and connections between rear sonar system
OFF switch and sonar control unit.
4. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
When the transmission gear selector lever is in the R position
and the rear sonar system OFF switch is OFF, the sonar system
does not operate.1. Check for PNP switch failure. Refer to AT - 8 5 , "
SELF-DIAG-
NOSTIC RESULT MODE" .
2. Check harness and connections between sonar control unit
and PNP/reverse lamp circuits.
3. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
When the rear sonar system OFF switch is OFF, the indicator
lamp lights up and buzzer sounds although there is no obstacle
within the detection range.1. Check for adhesion of snow, mud, or other foreign objects to
rear sonar sensors; dew condensation; etc. Refer to DI-64,
"Pre-diagnosis Inspection" .
2. Check that the rear sonar sensor is properly aligned (bumper
is not misaligned, no deformation in sensor mounting area).
3. Check harness and connections between rear sonar sensors
and sonar control unit.
4. Check rear sonar sensors for malfunction.
5. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
The rear sonar sensors do not operate according to the distance
between each sensor and the obstacle. (There is a large error in
the obstacle detection distance).1. Check rear sonar sensors for malfunction.
2. Replace sonar control unit. Refer to DI-68, "
SONAR CON-
TROL UNIT" .
3. Check for adhesion of snow, mud, or other foreign objects to
rear sonar sensors; dew condensation; etc. Refer to DI-64,
"Pre-diagnosis Inspection" .
4. Check that the rear sonar sensor is properly aligned (bumper
is not misaligned, no deformation in sensor mounting area).

Page 1171 of 3419

INFINITI QX4 2005 Factory Service Manual DI-68
REAR SONAR SYSTEM
Revision: October 20052005 QX56
Component InspectionEKS00BDB
SONAR BUZZER
1. Disconnect the sonar buzzer connector.
2. Check continuity between buzzer connector M117 terminal (

Page 1172 of 3419

INFINITI QX4 2005 Factory Service Manual CLOCK
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Revision: October 20052005 QX56
CLOCKPFP:25820
Wiring Diagram — CLOCK —EKS00BDD
WKWA1178E

Page 1173 of 3419

INFINITI QX4 2005 Factory Service Manual DI-70
CLOCK
Revision: October 20052005 QX56
Removal and Installation of ClockEKS00BDE
REMOVAL
1. Remove cluster lid C. Refer to IP-10, "INSTRUMENT PANEL
ASSEMBLY" .
2. Remove screws (3) and remove clo

Page 1174 of 3419

INFINITI QX4 2005 Factory Service Manual REAR VIEW MONITOR
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Revision: October 20052005 QX56
REAR VIEW MONITORPFP:28260
Component Parts and Harness Connector LocationEKS00D8F
WKIA3565E

Page 1175 of 3419

INFINITI QX4 2005 Factory Service Manual DI-72
REAR VIEW MONITOR
Revision: October 20052005 QX56
System DescriptionEKS00BDF
When the A/T selector is in the reverse position, the display shows view to the rear of the vehicle.
Lines which in

DI-72
REAR VIEW MONITOR
Revision: October 20052005 QX56
System DescriptionEKS00BDF
When the A/T selector is in the reverse position, the display shows view to the rear of the vehicle.
Lines which indicate the vehicle clearance and distances are displayed on the monitor.
POWER SUPPLY AND GROUND
Power is supplied at all times
through 20A fuse (No. 31, located in the fuse and fusible link box)
to rear view camera control unit terminal 1.
When ignition switch is in ACC or ON position, power is supplied
through 10A fuse [No. 4, located in the fuse block (J/B)]
to rear view camera control unit terminal 2.
Ground is supplied
to rear view camera control unit terminal 3 and
to rear view camera terminal 2
through grounds B7 and B19.
AV COMMUNICATION LINE
Rear view camera control unit is connected to the following units with AV communication line. Each unit trans-
mits/receives data with AV communication line.
NAVI control unit
Display unit
Display control unit
AV switch
REAR VIEW CAMERA OPERATION
When ignition switch is in ON or START position, power is supplied
through 10A fuse (No. 51, located in the IPDM E/R)
to back-up lamp relay terminals 1 and 3.
When A/T selector lever is in reverse position, power is supplied
through back-up lamp relay terminal 2
to TCM terminal 7.
Then, when back-up lamp relay is energized,
from back-up lamp relay terminal 5
to rear view camera control unit terminal 4.
Then, rear view camera control unit is sent camera ON signal
through rear view camera control unit terminal 8
to rear view camera terminal 1.
An image taken by rear view camera is sent
through rear view camera terminals 3 and 4
to rear view camera control unit terminals 10 and 9.
Then an image is sent
through rear view camera control unit terminals 11 and 12
to display unit terminals 4 and 15.
An image of rear view will be projected on the display.
Side Distance Guideline
When A/T selector lever is in reverse position, rear view camera control unit is sent rear view camera guideline
image
through rear view camera control unit terminals 11 and 12
to display unit terminals 4 and 15.
Rear view camera guideline will be projected on the display.
Display shows image from rear view camera image and rear view camera guideline.

Page 1176 of 3419

INFINITI QX4 2005 Factory Service Manual REAR VIEW MONITOR
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Revision: October 20052005 QX56
SchematicEKS00BDH
WKWA2375E

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