Vvel relay INFINITI QX56 2011 Factory User Guide

EC-112
< ECU DIAGNOSIS INFORMATION >[VK56VD]
VVEL CONTROL MODULE
15
(L/B) 14
(B) VVEL actuator motor
(Low lift) (bank 2)
Output[Engine is running]
 Warm-up condition
 Idle speed
0 - 14 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0 - 14 V
16
(L/R) 19
(L) VVEL control shaft position
sensor 2 (bank 1)
Input[Engine is running]
 Warm-up condition
 Idle speed
3.50 - 4.75 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
17
(O) —Sensor ground
[VVEL control shaft position
sensor 2 (bank 2)] —— —
18
(W/L) 17
(O) VVEL control shaft position
sensor 2 (bank 2)
Input[Engine is running]
 Warm-up condition
 Idle speed
3.50 - 4.75 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
19
(L) —Sensor ground
[VVEL control shaft position
sensor 2 (bank 1)]
—— —
20
(L/W) 19
(L) Sensor power supply
[VVEL control shaft position
sensor 2 (bank 1)]
— [Ignition switch: ON] 5 V
21
(BR/
W) 14
(B) VVEL actuator motor relay
abort signal
(ECM)
Input
[Engine is running]
 Warm-up condition
 Idle speed 0 V
22
(W) 17
(O) Sensor power supply
[VVEL control shaft position
sensor 2 (bank 2)]
— [Ignition switch: ON] 5 V
23
(BR/ Y) 14
(B) VVEL control motor relay Output [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
24
(R/W) — ENG communication line
Input/
Output——
Terminal No. Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0854ZZ
JMBIA0855ZZ
Revision: 2010 May2011 QX56

EC-150
< BASIC INSPECTION >[VK56VD]
VVEL CONTROL SHAFT POSI
TION SENSOR ADJUSTMENT
VVEL CONTROL SHAFT POSITI ON SENSOR ADJUSTMENT
DescriptionINFOID:0000000006217752
VVEL control shaft position sensor adjustment is an operat ion 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 la dder assembly is replaced. If by any chance the
adjustment is performed, replace VVEL ladder assembly.
Work ProcedureINFOID: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 POSI TION 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 POSITI ON SEN-B1” or “VVEL POSITION SEN-B2” is within
the standard value.
NOTE:
If it varies from the standard value after the m ounting 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 EC-148, "
Work Procedure".
>> 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 Nm (0.71 kg-m, 62 in-lb)
Voltage: 500 ± 48 mV
JSBIA0533ZZ
Revision: 2010 May2011 QX56

VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
EC-151
< BASIC INSPECTION > [VK56VD]
C
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G H
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EC
NP
O
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 contro l shaft position sensor is within the standard value.
NOTE:
If it varies from the standard value after the m ounting 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 EC-148, "
Work Procedure".
>> INSPECTION END
JSBIA0533ZZ
VVEL control module Voltage
Bank Connector +–
Terminal Terminal
1 F56 36
500 ± 48 mV
254
: 7.0 Nm (0.71 kg-m, 62 in-lb)
VVEL control module
Voltage
Bank Connector +–
Terminal Terminal
1 F56 3 6
500 ± 48 mV
254
Revision: 2010 May2011 QX56

P1091 VVEL ACTUATOR MOTOR RELAYEC-393
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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EC
NP
O
P1091 VVEL ACTUATOR MOTOR RELAY
DTC LogicINFOID:0000000006217900
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confi rm that battery voltage is 10 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 1 seconds.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and wait at least 1 seconds.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-393, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006217901
1.VVEL ACTUATOR MOTOR RELAY POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect VVEL actuator motor relay.
3. Check the voltage between VVEL actuator motor relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
 50A fusible link (letter O)
 Harness for open or short between VVEL actuator motor relay and battery
>> Repair open circuit, short to ground or short to power in harness or connectors.
DTC No. Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P1091 VVEL ACTR MOT PWR
[VVEL actuator motor relay
circuit]  VVEL control module detects the VVEL
actuator motor relay is stuck OFF.
 VVEL control module detects the VVEL actuator motor relay is stuck ON.  Harness or connectors
(VVEL actuator motor rela y circuit is open or
shorted.)
(Abort circuit is open or shorted.)
 VVEL actuator motor relay
 VVEL control module
ECM
VVEL actuator motor relay Ground Voltage
Connector Terminal
E62 1
Ground Battery voltage
3
Revision: 2010 May2011 QX56

EC-394
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P1091 VVEL ACTUATOR MOTOR RELAY
3.VVEL ACTUATOR MOTOR RELAY POWER SUPPLY CIRCUIT-II
1. Disconnect VVEL control module harness connector.
2. Check the continuity between VVEL actuator mo tor relay harness connector and VVEL control module
harness connector.
3. Also check harness for short to ground and power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.VVEL ACTUATOR MOTOR RELAY INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between VVEL actuator motor relay harness connector and VVEL control module
harness connector.
2. Also check harness for short to ground and power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK VVEL ACTUATOR MOTOR RELAY
Refer to EC-395, "
Component Inspection (VVEL Actuator Motor Relay)".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace VVEL actuator motor relay.
6.CHECK ABORT CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check the continuity between VVEL contro l module harness connector and ECM harness connector.
3. Also check harness for short to ground and power.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
 Harness for open and short between ECM and VVEL control module
 Loose or poor connection for each connector and harness
>> Repair open circuit, short to ground or short to power in harness or connectors.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
VVEL control module VVEL actuator motor relay
Continuity
Connector Terminal Connector Terminal
F56 23 E62 2 Existed
VVEL control module VVEL actuator motor relay
Continuity
Bank Connector Terminal Connector Terminal
1 F56 13
E62 5 Existed
21
VVEL control module ECM Continuity
Connector Terminal Connector Terminal
F56 21 E80 122 Existed
Revision: 2010 May2011 QX56

P1091 VVEL ACTUATOR MOTOR RELAYEC-395
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
C
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G H
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EC
NP
O
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace.
9.REPLACE VVEL CONTROL MODULE
1. Replace VVEL control module.
2. Perform additional service when replacing VVEL control module. Refer to EC-144, "
Work Procedure".
>> GO TO 10.
10.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC Confirmation Procedure. See EC-393, "
DTC Logic".
Is the DTC P1091 displayed again?
YES >> Replace ECM. Refer to EC-535, "Removal and Installation".
NO >> INSPECTION END
Component Inspection (VVE L Actuator Motor Relay)INFOID:0000000006217902
1.CHECK VVEL ACTUATOR MOTOR RELAY
1. Turn ignition switch OFF.
2. Remove VVEL actuator motor relay.
3. Check the continuity between VVEL actuator motor relay termi- nals under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace VVEL actuator motor relay.
Terminal Condition Continuity 3 and 5 12V direct current supply between
terminals 1 and 2
Existed
No current supply Not existed
JMBIA0876ZZ
Revision: 2010 May2011 QX56

ENGINE CONTROL SYSTEM SYMPTOMSEC-525
< SYMPTOM DIAGNOSIS > [VK56VD]
C
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EC
NP
O
Mass air flow sensor circuit
1
12 2
222 2 EC-201
Engine coolant temperature sensor circuit
333
EC-217
Air fuel ratio (A/F) sensor 1 circuit EC-181
EC-228
EC-232
EC-235
EC-238
Throttle position sensor circuit
22EC-219
EC-288
EC-406
EC-407
EC-475
Accelerator pedal position sensor circuit 3 2 1
EC-468EC-471
EC-478
Knock sensor circuit 2 3
EC-297
Engine oil temperature sensor 4 2 3EC-285
Crankshaft position sensor circuit 2 2EC-299
Camshaft position sensor circuit 3 2EC-303
Vehicle speed signal circuit 2 3 3 3EC-356
Power steering pressure sensor circuit 2 3 3EC-371
ECM 22333333333EC-376EC-378
EC-380
Intake valve timing control solenoid valve cir-
cuit
32 13223 3
EC-193
VVEL control module 3 4 4 3 EC-451EC-452
VVEL actuator motor 3 4 4 3
EC-390
VVEL actuator motor relay 3 4 4 3EC-393
VVEL control shaft position sensor 3 4 4 3EC-387
PNP signal circuit 3 3 3 3 3EC-383
Refrigerant pressure sensor circuit 2 3 3 4EC-520
Electrical load signal circuit 3EC-493
Air conditioner circuit 223333333 3 2HAC-60
ABS actuator and electric unit (control unit) 4BRC-60
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Revision: 2010 May2011 QX56