2010 INFINITI QX56 turn signal

FRONT WIPER AND WASHER SYSTEMWW-5
< FUNCTION DIAGNOSIS >
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• BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication according to the
front wiper INT operation condition and the intermittent operation delay interval judged value.
Front wiper INT operating condition- Ignition switch ON
- Front wiper switch INT
Intermittent operation delay interval judgment- BCM calculates the intermittent operation delay inte rval from the vehicle speed signal received from the
wiper dial position and the combination meter with CAN communication.
• IPDM E/R turns the integrated front wiper relay ON so that the front wiper is operated only once according to the front wiper request signal (INT).
• BCM detects stop position/except st op position of the front wiper motor according to the front wiper stop
position signal received from IP DM E/R with CAN communication.
• BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval after the front wiper motor is stopped.
FRONT WIPER AUTO STOP OPERATION
• BCM stops transmitting the front wiper request si gnal when the front wiper switch is turned OFF.
• IPDM E/R detects the front wiper auto stop signal fr om the front wiper motor and detects the front wiper
motor position (stop positi on/except stop position).
Wiper intermittent dial posi-
tion Intermittent
operation interval Intermittent operation delay Interval (s)
Vehicle speed
Vehicle stopped or less than 5 km/h (3.1 MPH) 5 km/h (3.1 MPH)
or more or less
than 35 km/h (21.7 MPH) 35 km/h (21.7
MPH) or more or
less than 65 km/h (40.4 MPH) 65 km/h (40.4
MPH) or more
1S hort
↑
↓
Long 0.8
0.60.40.24
2 4321 .2
31 07.5 5 3
41 612 84.8
5 241 8127.2
6 322 4169.6
7 423 1.52 11 2.6
JPLIA0094GB
Revision: April 20092010 QX56

WW-6
< FUNCTION DIAGNOSIS >
FRONT WIPER AND WASHER SYSTEM
• When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper
motor returns to the stop position.
NOTE:
• BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
• IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.
FRONT WIPER OPERATION LINKED WITH WASHER
• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
washer linked operating condition of the front wiper.
• BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 3 times when the front washer s witch OFF is detected.
Washer linked operating condition of front wiper
- Ignition switch ON
- Front washer switch ON (0.4 second or more)
• IPDM E/R turns ON the integrated front wiper rela y according to the front wiper request signal (LO).
• The front and rear washer motor is grounded through the combination switch with the front washer switch
ON.
FRONT WIPER DROP WIPE OPERATION
• BCM controls the front wiper to operate once accordi ng to the conditions of front wiper drop wipe operation.
Front wiper drop wipe operating condition- Ignition switch ON
- Front wiper switch OFF
- Front washer switch OFF
• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication so that the front
wiper operate once three seconds after front wiper operation linked with washer.
• IPDM E/R turns ON the integrated front wiper rela y according to the front wiper request signal (LO).
FRONT WIPER FAIL−SAFE OPERATION
• IPDM E/R performs the fail-safe function when the front wiper auto stop circuit is malfunctioning. Refer to
WW-68, "
FailSafe".
JPLIA0095GB
Revision: April 20092010 QX56

REAR WIPER AND WASHER SYSTEMWW-9
< FUNCTION DIAGNOSIS >
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• BCM reads an auto stop signal from the rear wiper motor to detect a rear wiper motor position.
• When the rear wiper motor is at other than the stopping position, BCM continues to supply power to the rear
wiper motor until it returns to the stopping position.
NOTE:
BCM stops supplying power to the rear wiper motor when the ignition switch is turned OFF.
REAR WIPER OPERATION LINKED WITH WASHER
• BCM supplies power to the rear wiper motor according to the washer linked operating condition of rear
wiper. When the rear washer switch is turned OFF, BC M controls rear wiper to operate approximately three
times.
Washer linked operating condition of rear wiper- Ignition switch ON
- Rear washer switch ON (0.4 second or more)
• Front and rear washer motor becomes grounded through the combination switch when the rear washer switch is turned ON.
REAR WIPER DROP WIPE OPERATION
• BCM controls the rear wiper to operate once acco rding to the rear wiper drop wipe operating condition.
Rear wiper drop wipe operating condition
- Ignition switch ON
- Rear wiper switch OFF
- Rear washer switch OFF
• BCM controls the rear wiper so that it operates onc e time approximately three seconds later after the washer
interlocking operation of the rear wiper.
REAR WIPER FAIL −SAFE OPERATION
BCM performs the fail-safe function when the rear wiper auto stop circuit is malfunctioning. Refer to BCS-53,
"FailSafe".
JPLIA0166GB
Revision: April 20092010 QX56

DIAGNOSIS SYSTEM (BCM)WW-11
< FUNCTION DIAGNOSIS >
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu nction (BCM - COMMON ITEM)INFOID:0000000005369209
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
WIPER
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM pa rt number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Vehicle security system THEFT ALM ×××
Panic alarm system PANIC ALARM ×
Revision: April 20092010 QX56

DIAGNOSIS SYSTEM (IPDM E/R)WW-13
< FUNCTION DIAGNOSIS >
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000005369213
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure low/coolant pressure high warning indicator
• Oil pressure gauge
• Rear window defogger
• Front wipers
• Tail, license and parking lamps
• Front fog lamps
• Headlamps (Hi, Lo)
• A/C compressor (magnetic clutch)
• Cooling fan
Operation Procedure
1. Close the hood and front door RH, and lift the wiper arms from the windshield (to prevent windshield dam-
age due to wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield before hand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON and, within 20 seconds, press the front door switch LH 10 times. Then turn the ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. Af ter that the horn sounds once and the auto active test
starts.
5. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actua ted, check door switch system. Refer to DLK-71, "
Descrip-
tion".
• Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 7 steps are repeated 3 times.
Operation
sequence Inspection Location
Operation
1 Rear window defogger 10 seconds
2 Front wipers LO for 5 seconds → HI for 5 seconds
WKIA4655E
Revision: April 20092010 QX56

FRONT WIPER AUTO STOP SIGNAL CIRCUITWW-23
< COMPONENT DIAGNOSIS >
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FRONT WIPER AUTO ST OP SIGNAL CIRCUIT
Component Function CheckINFOID:0000000005146776
1. CHECK FRONT WIPER (AUTO STOP) SIGNAL CHECK
CONSULT-III DATA MONITOR
1. Select "FR WIPER STOP" of IPDM E/R data monitor item.
2. Operate the front wiper.
3. Check that "FR WIPER STOP" changes to "ON" and "OFF" linked with the wiper operation.
Is the status of item normal?
YES >> Front wiper auto stop signal circuit is normal.
NO >> Refer to WW-23, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146777
Regarding Wiring Diagram information, refer to WW-31, "Wiring Diagram".
1. CHECK FRONT WIPER MOTOR (AUTO STOP) OUTPUT VOLTAGE
1. Turn the ignition switch ON.
2. Check voltage between IPDM E/R harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> GO TO 2
2. CHECK FRONT WIPER MOTOR (AUTO STOP) SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R and front wiper motor.
3. Check continuity between IPDM E/R harness connector and ground.
Does continuity exist?
YES >> Repair or replace harness.
NO >> Replace IPDM E/R. Refer to PCS-35, "
Removal and Installation of IPDM E/R".
3. CHECK FRONT WIPER MOTOR (AUTO STOP) CIRCUIT CONTINUITY
Monitor item ConditionMonitor status
FR WIPER STOP Front wiper motor Stop position
ON
Except stop position OFF
Te r m i n a l s
Voltage
(Approx.)
(+)
(-)
IPDM E/R Ground
Connector Terminal
E122 43 Battery voltage
WKIA1431E
IPDM E/R
GroundContinuity
Connector Terminal
E122 43 No
WKIA1429E
Revision: April 20092010 QX56

WW-30
< COMPONENT DIAGNOSIS >
REAR WIPER AUTO STOP SIGNAL CIRCUIT
REAR WIPER AUTO STOP SIGNAL CIRCUIT
Component Function CheckINFOID:0000000005146783
1. CHECK REAR WIPER (AUTO STOP) OPERATION
CONSULT-III DATA MONITOR
1. Select "WIPER" of BCM data monitor item.
2. Operate the rear wiper.
3. Check that "RR WIPER STOP" changes to "O N" and "OFF" linked with the wiper operation.
Is the status of item normal?
YES >> Rear wiper auto stop signal circuit is normal.
NO >> Refer to WW-30, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146784
Regarding Wiring Diagram information, refer to WW-35, "Wiring Diagram".
1. CHECK REAR WIPER MOTOR AUTO STOP CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect BCM and rear wiper motor.
3. Check continuity between BCM harness connector terminals and rear wiper motor harness connector terminals.
Is inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK AUTO STOP CIRCUITS FOR SHORT TO GROUND
Check continuity between BCM harness connector terminals and
ground.
Is inspection result normal?
YES >> Replace BCM. Refer to BCS-59, "Removal and Installa-
tion".
NO >> Repair or replace harness.
Monitor item ConditionMonitor status
RR WIPER STOP Rear wiper motor Stop position
ON
Except stop position OFF
BCM Rear wiper motor
Continuity
Connector Terminal Connector Terminal
M18 26 D7041
Ye s
M19 44 2
WKIA1415E
BCM
GroundContinuity
Connector Terminal
M18 26 No
M19 44
WKIA1421E
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)WW-43
< ECU DIAGNOSIS >
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TRNK OPNR SW When back door opener switch is not pressed OFF
When back door opener switch is pressed
ON
TURN SIGNAL L Turn signal switch OFF
OFF
Turn signal switch LH ON
TURN SIGNAL R Turn signal switch OFF
OFF
Turn signal switch RH ON
VEHICLE SPEED While driving Equivalent to speedo meter reading
Monitor Item
Condition Value/Status
Revision: April 20092010 QX56