2009 INFINITI QX56 clock

DLN-42
< COMPONENT DIAGNOSIS >[ATX14B]
P1817 ACTUATOR MOTOR
- Transfer control unit harness connector E143 terminal 33 and
transfer control device (actuator motor) harness connector F58
terminal 21.
- Transfer control unit harness connector E143 terminal 42 and
transfer control device (actuator motor) harness connector F58
terminal 24.
- Transfer control unit harness connector E142 (A) terminal 4 and transfer shift high relay harness connector E46 (B) terminal 1.
- Transfer control unit harness connector E142 (A) terminal 13
and transfer shift low relay harness connector E47 (C) terminal
1.
- Transfer control unit harness connector E143 (A) terminal 33
and transfer shift high relay harness connector E46 (B) terminal
3.
- Transfer control unit harness connector E143 (A) terminal 42
and transfer shift low relay harness connector E47 (C) terminal
3.
Also check harness for short to ground and short to power.
Are the inspection results normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK ACTUATOR MOTOR
1. Remove transfer control device. Refer to DLN-136, "Removal and Installation"
.
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.
CAUTION:
 Do not operate actuator motor for more than 1 second.
 Change the actuator motor posi tion to HIGH when install-
ing.
 Be careful not to overheat the harness.
SDIA2710E
WDIA0314E
Continuity should exist.
WDIA0315E
Terminal Actuator motor
21 (Battery voltage) - 24 (Ground) Clockwise rotation
24 (Battery voltage) - 21 (G round) Counterclockwise rotation
WDIA0224E
Revision: December 20092009 QX56

P1817 ACTUATOR MOTORDLN-43
< COMPONENT DIAGNOSIS > [ATX14B]
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3. Check resistance between transfer control device (actuator motor) terminals 21 and 24.
Are the inspection results normal?
YES >> GO TO 7.
NO >> Replace transfer control device (actuator motor).
7.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to DLN-81, "Reference Value"
.
Are the inspection results normal?
YES >> GO TO 8.
NO >> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
8.CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES >> Inspection End.
NO >> Replace transfer control unit. Refer to DLN-130, "Removal and Installation"
.
Component InspectionINFOID:0000000003772111
TRANSFER SHIFT RELAY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer to DLN-16, "Component Parts Loca-
tion".
3. Apply 12V direct current between transfer shift relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, 3 and 5.
5. If NG, replace transfer shift relay.
TRANSFER CONTROL DEVICE
1. Remove transfer control device. Refer to DLN-136, "Removal and Installation".
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.
CAUTION:
 Do not operate actuator moto r for more than 1 second.
 Change the actuator motor posi tion to HIGH when install-
ing.
 Be careful not to overheat the harness. 21 - 24 : Approx. 0.2
Ω
SDIA2726E
Terminal Condition Continuity
3 - 4 12V direct current supply between terminals 1 and 2 No
OFF Yes
3 - 5 12V direct current supply between terminals 1 and 2 Yes
OFF No
WIIA0291E
Terminal Actuator motor
21 (Battery voltage) - 24 (Ground) Clockwise rotate
24 (Battery voltage) - 21 (G round) Counterclockwise rotate
WDIA0224E
Revision: December 20092009 QX56

INSPECTION AND ADJUSTMENTEC-19
< BASIC INSPECTION > [VK56DE]
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With CONSULT-III
1. Perform
EC-18, "Accelerator Pedal Released Position Learning" .
2. Perform EC-18, "Throttle Valve Closed Position Learning"
.
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREP ARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEA RN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-III screen. If “CMPLT” is not displayed, Idle Air Vol-
ume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to
the DIAGNOSTIC PROCEDURE below.
8. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
Without CONSULT-III
NOTE:
It is better to count the time accurately with a clock.
 It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
1. Perform EC-18, "Accelerator Pedal Released Position Learning"
.
2. Perform EC-18, "Throttle Valve Closed Position Learning"
.
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREP ARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
ITEM SPECIFICATION
Idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 15 ± 5 ° BTDC (in P or N position)
SEC897C
Revision: December 20092009 QX56

EC-56
< FUNCTION DIAGNOSIS >[VK56DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
When there is an open circuit on MIL circuit, the ECM c
annot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine cont rol system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnos es except MIL circuit are detected and demands the
driver to repair the malfunction.
MIL Flashing Without DTC
When any SRT codes are not set, MIL may fl ash without DTC. For the details, refer to EC-456, "DTC Index".
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
It is better to count the ti me accurately with a clock.
 It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
 Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mode II (Self-diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
NOTE:
Do not release the accelerator pedal for 10 seconds if MIL may start blinking on the halfway of this
10 seconds. This blinking is displaying SRT status and is continued for another 10 seconds. For
the details, refer to EC-456, "DTC Index"
.
Diagnostic Test
ModeKEY and ENG.
Status Function Explanation of Function
Mode I Ignition switch in ON position
Engine stopped BULB CHECK This function checks the MIL bulb for damage (blown, open
circuit, etc.).
If the MIL does not come on, check MIL circuit.
Engine running MALFUNCTION WARNING This is a usual driving condition. When a malfunction is de-
tected twice in two consecutive driving cycles (two trip de-
tection logic), the MIL will light up to inform the driver that a
malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.
 Misfire (Possible three way catalyst damage)
 One trip detection diagnoses
Mode II Ignition switch in ON position
Engine stopped SELF-DIAGNOSTIC
RESULTS
This function allows DTCs an
d 1st trip DTCs to be read.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Revision: December 20092009 QX56

EC-216
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 EVAP CONTROL SYSTEM
 If DTC Confirmation Procedure has been previously
conducted, always perform the following before con-
ducting the next step.
1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich OFF and wait at least 10 seconds.
TESTING CONDITION:
 Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed
on flat level surface.
 Always perform test at a temperature of 0 to 30 °C (32 to 86 °F).
WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
4. Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 70 °C (32 - 158 °F)
INT/A TEMP SE: 0 - 30 °C (32 - 86 °F)
5. Select “EVP SML LEAK P0442/P1442” of “EVAPO RATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within t he range displayed on the CONSULT-III screen, go to
EC-13, "Basic Inspection"
.
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-216, "Diagnosis Procedure"
.
NOTE:
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
WITH GST
NOTE:
Be sure to read the explanation of EC-456, "DTC Index"
before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-456, "DTC Index"
.
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select Service $07 with GST.
- If P0442 is displayed on the screen, go to EC-216, "Diagnosis Procedure"
.
- If P0441 is displayed on the screen, go to EC-211, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003771483
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened proper ly by rotating the cap clockwise.
SEF915U
Revision: December 20092009 QX56

EC-252
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened proper ly by rotating the cap clockwise.
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until ratcheting sound is heard.
3.CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to EC-264, "Component Inspection"
.
OK or NG
OK >> GO TO 5.
NG >> Replace fuel filler cap with a genuine one.
5.CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or
disconnection.
Refer to EC-37, "Description"
.
OK or NG
OK >> GO TO 6.
NG >> Repair or reconnect the hose.
6.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 7.
7.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
 EVAP canister vent control valve is installed properly. Refer to EC-491, "Removal and Installation"
.
 EVAP canister vent control valve. Refer to EC-232, "Component Inspection"
.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace EVAP cani ster vent control valve and O-ring.
8.INSTALL THE PRESSURE PUMP
SEF915U
Revision: December 20092009 QX56

P0456 EVAP CONTROL SYSTEMEC-259
< COMPONENT DIAGNOSIS > [VK56DE]
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1. Attach the EVAP service port
adapter (commercial service tool)
securely to the EVAP service port.
2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4. Turn ignition switch ON.
5. Connect GST and select Service $08.
6. Using Service $08, control the EV AP canister vent control valve
(close).
7. Apply pressure and make sure the following conditions are sat- isfied.
Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg)
Time to be waited after the pressure drawn in to the EVAP
system and the pressure to be dropped: 60 seconds and
the pressure should not be dr opped more than 0.4 kPa (3
mmHg, 0.12 inHg).
If NG, go to EC-259, "Diagnosis Procedure"
.
If OK, go to next step.
8. Disconnect GST.
9. Start engine and warm it up to normal operating temperature.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Restart engine and let it idle for 90 seconds.
12. Keep engine speed at 2,000 rpm for 30 seconds.
13. Turn ignition switch OFF. NOTE:
For more information, refe r to GST Instruction Manual.
Diagnosis ProcedureINFOID:0000000003771527
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until ratcheting sound is heard.
BBIA0366E
SEF462UI
SEF915U
Revision: December 20092009 QX56

EVAP CANISTEREC-491
< ON-VEHICLE REPAIR > [VK56DE]
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ON-VEHICLE REPAIR
EVAP CANISTER
Removal and InstallationINFOID:0000000003771748
EVAP CANISTER
Tighten EVAP canister as shown in the figure.
EVAP CANISTER VENT CONTROL VALVE
1. Turn EVAP canister vent control valve counterclockwise.
2. Remove the EVAP canister vent control valve.
Always replace O-ring with a new one.
Component InspectionINFOID:0000000003771749
EVAP CANISTER
Check EVAP canister as follows:
1. Block port
B.
2. Blow air into port Aand check that it flows freely out of port C.
3. Release blocked port B.
4. Apply vacuum pressure to port B and check that vacuum pres-
sure exists at the ports Aand C.
5. Block port Aand B.
6. Apply pressure to port C and check that there is no leakage.
: N-·m (kg-m, in-lb)
BBIA0349E
BBIA0350E
PBIB1212E
Revision: December 20092009 QX56