turn signal INFINITI QX4 2005 Factory Service Manual

SUNROOF
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Terminals and Reference Values for BCMEIS004VT
Terminals and Reference Values for Sunroof Motor AssemblyEIS004VU
Work FlowEIS004VV
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to RF-10, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
Refer to RF-17, "
Trouble Diagnosis Chart by Symptom" .
4. Does sunroof system operate normally? If Yes, GO TO 5, If No, GO TO 3.
5. Inspection End.
Terminal Wire Color Item ConditionVoltage
(Approx.)
12 R/L Front door switch RH signalON (Open) 0
OFF (Close) Battery voltage
38 W/L Ignition power supply Ignition switch ON Battery voltage
47 SB Front door switch LH signalON (Open) 0
OFF (Close) Battery voltage
67 B Ground — —
68 W/L RAP signalIgnition switch ON Battery voltage
Within 45 second after ignition switch is turned
OFF Battery voltage
When front door LH or RH is open while
retained power is operating0
69 W/R Power window power supply — Battery voltage
70 W/B BAT power supply — Battery voltage
Terminal Wire Color Item ConditionVo ltag e
(Approx.)
1 W/L RAP signalIgnition switch ON Battery voltage
Within 45 second after ignition switch is
turned OFFBattery voltage
When front door LH or RH is open while
retained power is operating0
3 P/W Sunroof switch CLOSE signalIgnition switch ON and sunroof switch
CLOSE position0
Other than above Battery voltage
4 O Sunroof switch TILT UP signalIgnition switch ON and sunroof switch in
TILT UP position0
Other than above Battery voltage
5 W/R BAT power supply — Battery voltage
7 B Ground — —
8 Y Ground signal — —
9 P Sunroof switch OPEN signalIgnition switch ON and sunroof switch
OPEN position0
Other than above Battery voltage
10 L/R Sunroof switch TILT DOWN signalIgnition switch ON and sunroof switch in
TILT DOWN position0
Other than above Battery voltage

RF-16
SUNROOF
Revision: October 20052005 QX56
CONSULT-II Function (BCM)EIS004VW
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch "START (NISSAN BASED VHCL)".
3. Touch "BCM".
If "BCM" is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E
BCIA0030E

SUNROOF
RF-17
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4. Touch "RETAINED PWR".
5. Select diagnosis mode. "DATA MONITOR", "ACTIVE TEST" and
"WORK SUPPORT" are available.
Work Support EIS004VZ
Active TestEIS004VY
Data MonitorEIS004VX
Trouble Diagnosis Chart by SymptomEIS004W0
LIIA0163E
BCIA0031E
Work item Description
RETAINED PWR SETRAP signal’s power supply period can be changed by mode setting. Selects RAP sig-
nal’s power supply period between two steps.

MODE 1 (45 sec.) / MODE 2 (OFF) / MODE 3 (2 min.)
Test item Description
RETAINED PWRThis test is able to supply RAP signal (power) from BCM to power window system,
power sunroof system. Those systems can be operated when turning on "RETAINED
PWR" on CONSULT-II screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-II can be operated with ignition switch in "OFF"
position. "RETAINED PWR" should be turned "ON" or "OFF" on CONSULT-II
screen when ignition switch ON. Then turn ignition switch OFF for checking
retained power operation. CONSULT-II might be stuck if "RETAINED PWR" is
turned "ON" or "OFF" on CONSULT-II screen when ignition switch is OFF.
Monitored item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
Symptom Diagnostic procedure and repair order Refer to page
Sunroof does not operate.1. Sunroof motor assembly power supply and ground
circuit checkRF-20
2. Sunroof switch system checkRF-19
3. BCM power supply and ground circuit checkRF-18
4. Replace sunroof motor assemblyRF-27

RF-18
SUNROOF
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BCM Power Supply and Ground Circuit CheckEIS004W1
1. CHECK FUSE
Check the following BCM fuse and fusible link.
NOTE:
Refer to RF-10, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM connectors M18 and M20 termi-
nals 38, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Retained power operation does not operate properly.1. Check the retained power operation mode settingRF-112. BCM power supply and ground circuit checkRF-18
3. Door switch checkRF-21
4. Replace sunroof motor assemblyRF-27
Motor does not stop at the sunroof fully-open or fully-
closed position.1. Initialization procedure checkRF-11
2. Replace sunroof motor assemblyRF-27
Sunroof does not do the interruption detection. 1. Replace sunroof motor assemblyRF-27
Symptom Diagnostic procedure and repair order Refer to page
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM38 (IGN power supply) 10A 59 Fuse and relay box
70 (BAT power supply) 50A f Fuse and fusible link box
ConnectorTerminals
(Wire color)
ConditionVo l ta g e
(Approx.)
(+) (–)
M18 38 (W/L)
GroundIgnition switch ON
Battery voltage
M20 70 (W/B) Igniting switch OFF
WIIA0229E
Connector Terminals (Wire color) Continuity
M20 67 (B) Ground YES
LIIA0915E

RF-20
SUNROOF
Revision: October 20052005 QX56
Sunroof Motor Assembly Power Supply and Ground Circuit CheckEIS004W3
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the sunroof motor assembly connector.
3. Turn ignition switch ON.
4. Check voltage between sunroof motor assembly connector R4 terminals 1(W/L), 5 (W/R) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between sunroof motor assembly connector R4 terminal 7 (B) and ground.
OK or NG
OK >> Sunroof motor assembly power supply and ground cir-
cuits are OK. Further inspection is necessary. Refer to
RF-17, "
Trouble Diagnosis Chart by Symptom" .
NG >> Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL
Check voltage between BCM connector M20 terminals 68, 69 and
ground.
OK or NG
OK >> GO TO 4.
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installa-
tion of BCM" .
ConnectorTerminals (Wire color)
Condition Voltage
(Approx.)
(+) (–)
R41 (W/L)
GroundIgnition switch ON Battery voltage
Within 45 seconds after
ignition switch is turned
OFFBattery voltage
When front door LH or
RH is open while retained
power is operating0
5 (W/R) Ignition switch OFF Battery voltage
WIIA0250E
7 (B) - Ground : Continuity should exist.
WIIA0251E
68 (W/L) - Ground : Battery voltage
69 (W/R) - Ground : Battery voltage
WIIA0425E

SUNROOF
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4. CHECK SUNROOF MOTOR CIRCUIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector M20 terminal 68 (W/
L), 69 (W/R) and sunroof motor assembly connector R4 terminal
1 (W/L), 5 (W/R).
4. Check continuity between BCM connector M20 terminal 68 (W/
L), 69 (W/R) and ground.
OK or NG
OK >> Sunroof motor assembly power supply circuits are OK. Further inspection is necessary. Refer to
RF-17, "
Trouble Diagnosis Chart by Symptom" .
NG >> Repair or replace harness between BCM and sunroof motor assembly.
Door Switch CheckEIS004W4
1. CHECK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR" and "DOOR SW-AS") in "DATA MONITOR" mode with CONSULT-II.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Door switches are OK.
NG >> GO TO 2.68 (W/L) - 1 (W/L) : Continuity should exist.
69 (W/R) - 5 (W/R) : Continuity should exist.
68 (W/L) - Ground : Continuity should not exist.
69 (W/R) - Ground : Continuity should not exist.
LIIA1246E
Monitor item Condition
DOOR SW-DROPEN : ON
CLOSE : OFF
DOOR SW-ASOPEN : ON
CLOSE : OFF
PIIA2464E
Item ConnectorTe r m i n a l s
(Wire color)
ConditionVoltag e
(Approx.)
(+) (–)
RH M18 12 (R/L)
GroundDoor switch
OPEN0
Door switch
CLOSEBattery voltage
LH M19 47 (SB)Door switch
OPEN0
Door switch
CLOSEBattery voltage
WIIA0234E

RSU-1
REAR SUSPENSION
E SUSPENSION
CONTENTS
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SECTION RSU
A
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RSU
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Rear Suspension ............................ 3
PREPARATION ........................................................... 4
Commercial Service Tools ........................................ 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
CAN COMMUNICATION ............................................ 6
System Description .................................................. 6
TROUBLE DIAGNOSIS .............................................. 7
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ....................................................... 7
INTRODUCTION ................................................... 7
CLARIFY CONCERN ............................................ 7
WORK FLOW ........................................................ 8
Component Parts and Harness Connector Location ..... 9
Wiring Diagram — A/SUSP — ............................... 10
Basic Inspection ..................................................... 12
AIR HOSES ......................................................... 12
POWER SYSTEM TERMINAL LOOSENESS
AND BATTERY INSPECTION ............................ 12
CK SUSP INDICATOR LAMP INSPECTION ...... 12
CK SUSP Indicator Lamp Timing ........................... 12
Control Unit Input/Output Signal Standard ............. 12
CONSULT-II Function (AIR LEVELIZER) ............... 13
CONSULT-II BASIC OPERATION PROCEDURE
... 13
WORK SUPPORT ............................................... 14
SELF-DIAGNOSIS .............................................. 14
DATA MONITOR ................................................. 15
ACTIVE TEST ..................................................... 16
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ....................................................................... 17
Height Sensor System Inspection .......................... 17
Exhaust Valve Solenoid System Inspection ........... 19
Compressor Motor, Compressor Motor Relay and Circuit Inspection .................................................... 20
TROUBLE DIAGNOSES FOR SYMPTOMS ............ 23
Load Leveling Rear Air Suspension System Does
Not Operate ............................................................ 23
CK SUSP Indicator Lamp Stays On When Ignition
Switch Is Turned On ............................................... 24
REAR SUSPENSION ASSEMBLY ........................... 25
Components ........................................................... 25
On-Vehicle Inspection and Service ......................... 26
SHOCK ABSORBER INSPECTION .................... 26
Wheel Alignment Inspection ................................... 27
PRELIMINARY INSPECTION ............................. 27
GENERAL INFORMATION AND RECOMMEN-
DATIONS ............................................................. 27
THE ALIGNMENT PROCESS ............................. 28
CAMBER ............................................................. 28
TOE-IN ................................................................ 28
REAR SUSPENSION MEMBER ............................... 30
Removal and Installation ........................................ 30
REMOVAL ........................................................... 31
INSPECTION AFTER REMOVAL ....................... 32
INSTALLATION ................................................... 33
SHOCK ABSORBER ................................................ 34
Removal and Installation ........................................ 34
REMOVAL ........................................................... 34
INSTALLATION ................................................... 34
INSPECTION AFTER INSTALLATION ................ 34
SUSPENSION ARM .................................................. 35
Removal and Installation ........................................ 35
REMOVAL ........................................................... 35
INSPECTION AFTER REMOVAL ....................... 35
INSTALLATION ................................................... 36
FRONT LOWER LINK .............................................. 37
Removal and Installation ........................................ 37
REMOVAL ........................................................... 37
INSPECTION AFTER REMOVAL ....................... 37
INSTALLATION ................................................... 38

RSU-12
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
Basic InspectionEES001H6
AIR HOSES
1. Check for pinched or damaged air hoses between the suspension air reservoir and each load leveling rear
air suspension shock absorber. Reposition, repair or replace hoses as necessary.
2. Check the air hose connections at the suspension air reservoir and at the shock absorbers for leaks. If
connections are leaking, repair or replace hoses as necessary.
POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure the battery positive cable, negative cable and ground connection are not loose. In addition, make
sure the battery is sufficiently charged.
CK SUSP INDICATOR LAMP INSPECTION
1. Make sure the CK SUSP indicator lamp turns on for approximately 2 seconds when the ignition switch is
turned ON. If it does not, check the combination meter. Refer to DI-5, "
COMBINATION METERS" .
2. Make sure the lamp turns off approximately 2 seconds after the ignition switch is turned ON. If the lamp
does not turn off, conduct self-diagnosis of the suspension control unit.
3. After conducting the self-diagnosis, be sure to erase the error memory. Refer to RSU-13, "
CONSULT-II
Function (AIR LEVELIZER)" .
CK SUSP Indicator Lamp TimingEES001H7
X: ON
—: OFF
Control Unit Input/Output Signal StandardEES001H8
( ): Wire colorConditionCK SUSP
indicator lampRemarks
Ignition switch OFF – –
Ignition switch ON X Turns off after approximately 2 seconds.
Te r m i n a l
Item ConditionVoltage (V)
(Approx.)
+–
1 (V)
GroundCompressor relay output
Ignition switch ON or STARTBattery voltage
3 (W) Height sensor signal input 0.2V - 4.8V
5 (R) Reference voltage 5V
6 (G/R) Ignition power
Battery voltage
7 (W/L) Battery power —
8 (G/W) Diagnostic K-line — —
9 (SB) Exhaust valve output Ignition switch ON or START Battery voltage
10 (BR) Warning lamp output — —
14 (L) Height sensor ground — —
15 (BR/W) Alternator L signal input Engine running —
16 (B) Suspension control unit ground — 0V

TROUBLE DIAGNOSIS
RSU-13
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Revision: October 20052005 QX56
CONSULT-II Function (AIR LEVELIZER)EES001H9
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
3. Turn ignition switch ON.
4. Touch "START (NISSAN BASED VHCL)".
5. Touch "AIR LEVELIZER" in the "SELECT SYSTEM" screen.
If "AIR LEVELIZER" is not indicated, go to GI-39, "
CONSULT-II
Data Link Connector (DLC) Circuit" .
AIR LEVELIZER
diagnostic modeDescription
WORK SUPPORTSupports inspection and adjustments. Commands are transmitted to the suspension control unit for
setting the status suitable for required operation, input/output signals are received from the suspen-
sion control unit and received data is displayed.
SELF-DIAG RESULTS Displays suspension control unit self-diagnosis results.
DATA MONITOR Displays suspension control unit input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
ECU PART NUMBER Suspension control unit part number can be read.
BBIA0369E
BCIA0029E
BCIA0030E

TROUBLE DIAGNOSIS
RSU-15
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CAUTION:
If the error memory is not erased, re-conduct the operation from step 7.
10. For the final inspection, start and run the vehicle for approximately 1 minute and confirm that the CK
SUSP indicator lamp is off.
Display Item List
DATA MONITOR
Operation Procedure
1. After turning OFF the ignition switch, connect CONSULT-II and the CONSULT-II CONVERTER to the data
link connector.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
2. Touch "START (NISSAN BASED VHCL)", "AIR LEVELIZER", "DATA MONITOR" in order on the CON-
SULT-II screen.
If "AIR LEVELIZER" is not indicated, go to GI-39, "
CONSULT-II Data Link Connector (DLC) Circuit" .
CAUTION:
When "START (NISSAN BASED VHCL)" is touched immediately after starting the engine or turning
on the ignition switch, "AIR LEVELIZER" might not be displayed in the "SELECT SYSTEM" screen.
In this case, repeat the operation from step 2.
3. Return to the "SELECT MONITOR ITEM" screen, and touch "ALL SIGNALS" or "SELECTION FROM
MENU". Refer to the following information.
4. When "START" is touched, the data monitor screen is displayed.
Self-diagnostic item Malfunction detecting condition Check system
Vehicle height sensor
[C1801]Vehicle height sensor voltage is less than 0.2V or greater than
4.8V for more than 60 seconds.Refer to RSU-17, "
Height
Sensor System Inspection" .
Compressor relay
[C1802]1. Driving transistor for compressor relay is off and monitor volt-
age continues high level for more than 10 seconds.
2. Driving transistor for compressor relay is on and monitor volt-
age continues low level for more than 5 seconds.Refer to RSU-20, "
Compres-
sor Motor, Compressor
Motor Relay and Circuit
Inspection" .
Exhaust solenoid
[C1803]1. Driving transistor for exhaust solenoid is off and monitor volt-
age continues high level for more than 10 seconds.
2. Driving transistor for exhaust solenoid is on and monitor volt-
age continues low level for more than 5 seconds.Refer to RSU-19, "
Exhaust
Valve Solenoid System
Inspection" .
Vehicle height adjusting trouble
(compressor)
[C1804]Continuous compressor relay ON time is more than 120 sec-
onds.Refer to RSU-20, "
Compres-
sor Motor, Compressor
Motor Relay and Circuit
Inspection" .
Vehicle height adjusting trouble
(exhaust solenoid)
[C1805]Continuous exhaust solenoid ON time is more than 120 seconds.Refer to RSU-19, "
Exhaust
Valve Solenoid System
Inspection" .
Vehicle height sensor locking trou-
ble
[C1806]Output sensor voltage variation ±0.02V is more than 100 hour
when vehicle height range is normal.Refer to RSU-17, "
Height
Sensor System Inspection" .
Sensor 5V trouble
[C1807]Sensor reference voltage is less than 0.8V or more than 6V for
20 seconds.Refer to RSU-17, "
Height
Sensor System Inspection" .
Integral time trouble by supplying
air
[C1808]Integral discontinuous time on the compressor is more than 180
seconds.Refer to RSU-20, "
Compres-
sor Motor, Compressor
Motor Relay and Circuit
Inspection" .