Infiniti QX56 (Z62). Manual — part 543
EC-150
< BASIC INSPECTION >
[VK56VD]
VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
Description
INFOID:0000000006217752
VVEL control shaft position sensor adjustment is an operation to adjust the initial position of the VVEL control
shaft position sensor.
It must be performed each time VVEL ladder assembly is replaced.
CAUTION:
• It must be performed only on the replaced bank side.
• It must not be performed except when VVEL ladder assembly is replaced. If by any chance the
adjustment is performed, replace VVEL ladder assembly.
Work Procedure
INFOID:0000000006217753
1.
START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
WITH CONSULT-III
1.
Turn ignition switch ON.
2.
Select “VVEL POS SEN ADJ PREP” in “WORK SUPPORT” mode with CONSULT-III.
3.
Touch “Start” and wait a few seconds.
4.
Check that “CMPLT” is displayed on CONSULT-III screen.
5.
Select “VVEL POSITION SEN-B1” or “VVEL POSITION SEN-B2” in “DATA MONITOR” mode with CON-
SULT-III.
6.
Loosen the VVEL control shaft position sensor mounting bolts
(1).
7.
Turn the VVEL control shaft position sensor (2) clockwise and
counterclockwise while monitoring the output voltage of “VVEL
POSITION SEN-B1” or “VVEL POSITION SEN-B2” and adjust
the output voltage to be within the standard value.
8.
Tighten the VVEL control shaft position sensor mounting bolts.
9.
Reconfirm that the output voltage of “VVEL POSITION SEN-B1” or “VVEL POSITION SEN-B2” is within
the standard value.
NOTE:
If it varies from the standard value after the mounting bolts are tightened, perform steps 6 to 8 again.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Start engine and warm it up to normal operating temperature.
12. Turn ignition switch OFF and wait at least 10 seconds.
13. Perform idle air volume learning. Refer to
>> INSPECTION END
3.
PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
WITHOUT CONSULT-III
1.
Disconnect VVEL control shaft position sensor harness connector.
2.
Remove VVEL actuator motor relay.
3.
Turn ignition switch ON, wait at least 5 seconds and then turn it OFF.
Voltage:
500
±
48 mV
:
7.0 N•m (0.71 kg-m, 62 in-lb)
Voltage:
500
±
48 mV
JSBIA0533ZZ
VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
EC-151
< BASIC INSPECTION >
[VK56VD]
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4.
Reconnect all harness connectors disconnected.
5.
Install VVEL actuator motor relay.
6.
Turn ignition switch ON and wait at least 5 seconds.
7.
Loosen the VVEL control shaft position sensor mounting bolts
(1).
8.
Turn the VVEL control shaft position sensor (2) clockwise and
counterclockwise while monitoring the output voltage between
the VVEL control module terminals with a tester and adjust the
output voltage to be within the standard value.
9.
Tighten the VVEL control shaft position sensor mounting bolts.
10. Reconfirm that the output voltage of VVEL control shaft position sensor is within the standard value.
NOTE:
If it varies from the standard value after the mounting bolts are tightened, perform steps 7 to 9 again.
11. Turn ignition switch OFF and wait at least 10 seconds.
12. Start engine and warm it up to normal operating temperature.
13. Turn ignition switch OFF and wait at least 10 seconds.
14. Perform Idle Air Volume Learning. Refer to
.
>> INSPECTION END
JSBIA0533ZZ
VVEL control module
Voltage
Bank
Connector
+
–
Terminal
Terminal
1
F56
3
6
500
±
48 mV
2
5
4
:
7.0 N•m (0.71 kg-m, 62 in-lb)
VVEL control module
Voltage
Bank
Connector
+
–
Terminal
Terminal
1
F56
3 6
500
±
48 mV
2
5
4
EC-152
< BASIC INSPECTION >
[VK56VD]
MIXTURE RATIO SELF-LEARNING VALUE CLEAR
MIXTURE RATIO SELF-LEARNING VALUE CLEAR
Description
INFOID:0000000006217754
This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-
tions in “Diagnosis Procedure”.
Work Procedure
INFOID:0000000006217755
1.
START
WITH CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.
3.
Clear mixture ratio self-learning value by touching “CLEAR”.
WITH GST
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF.
3.
Disconnect mass air flow sensor harness connector.
4.
Restart engine and let it idle for at least 5 seconds.
5.
Stop engine and reconnect mass air flow sensor harness connector.
6.
Select Service $03 with GST. Check DTC P0102 is detected.
7.
Select Service $04 with GST to erase the DTC P0102.
>> END
FUEL PRESSURE
EC-153
< BASIC INSPECTION >
[VK56VD]
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FUEL PRESSURE
Work Procedure
INFOID:0000000006217756
FUEL PRESSURE RELEASE
WITH CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III.
3.
Start engine.
4.
After engine stalls, crank it two or three times to release all fuel pressure.
5.
Turn ignition switch OFF.
WITHOUT CONSULT-III
1.
Remove fuel pump fuse in IPDM E/R.
NOTE:
• For the fuse number, refer to
.
• For the fuse arrangement, refer to
PG-143, "Fuse, Connector and Terminal Arrangement"
.
2.
Start engine.
3.
After engine stalls, crank it two or three times to release all fuel pressure.
4.
Turn ignition switch OFF.
5.
Reinstall fuel pump fuse after servicing fuel system.
LOW FUEL PRESSURE CHECK
CAUTION:
• Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
• The fuel hose connection method used when taking fuel pressure check must not be used for other
purposes.
• Do not perform fuel pressure check with electrical systems operating (i.e. lights, rear defogger, A/C,
etc.) Fuel pressure gauge may indicate false readings due to varying engine load and changes in
manifold vacuum.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out.
1.
Release fuel pressure to zero.
2.
Prepare fuel hose for fuel pressure check (B) and fuel tube
adapter [SST (KV10118400)] (D), then connect fuel pressure
gauge (A).
CAUTION:
• Use suitable fuel hose for fuel pressure check (genuine
NISSAN fuel hose without quick connector).
• To avoid unnecessary force or tension to hose, use mod-
erately long fuel hose for fuel pressure check.
• Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
• Use Pressure Gauge to check fuel pressure.
3.
Disconnect fuel feed hose from fuel tube. Refer to
CAUTION:
Do not twist or kink fuel hose because it is plastic hose.
To quick connector
To fuel tube (engine side)
C
: Hose clamp
PBIB2982E
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