2011 INFINITI QX56 check engine

TM-92
< BASIC INSPECTION >[7AT: RE7R01B]
ADDITIONAL SERVICE WHEN RE
PLACING CONTROL VALVE & TCM
ADDITIONAL SERVICE WHEN REPLACING CONTROL VALVE & TCM
DescriptionINFOID:0000000006233274
Decel G sensor calibration must be performed when replacing control valve & TCM.
Special Repair RequirementINFOID:0000000006233275
1.PREPARATION BEFORE CALIBRATION PROCEDURE
1. Park the vehicle on a flat road.
2. Adjust pressure in all tires to the specified value. Refer to WT-69, "
Tire Air Pressure".
>> GO TO 2.
2.PERFORM CALIBRATION
With CONSULT-III
1. Turn ignition switch ON.
CAUTION:
Never start the engine.
2. Select “G SENSOR CALIBRATION” in “Work Support” in “TRANSMISSION”.
3. Touch “START”. CAUTION:
Never give any motion to the vehicle during the calibration.
Is
“completed” displayed?
YES >> GO TO 3.
NO >> Perform the calibration again.
3.CHECK DTC
With CONSULT-III
1. Turn ignition switch OFF and wait 10 seconds or more.
2. Turn ignition switch ON.
3. Select “Self Diagnostic Results” in “ABS”.
Is
“C1145” or “C1146” detected?
YES >> Refer to BRC-51, "DTC Index".
NO >> Calibration end.
Revision: 2010 May2011 QX56

CALIBRATION OF DECEL G SENSORTM-93
< BASIC INSPECTION > [7AT: RE7R01B]
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CALIBRATION OF DECEL G SENSOR
DescriptionINFOID:0000000006233272
Decel G sensor calibration must be performed when the following operation is performed.
 Removal and installation or replacem ent of yaw rate/side/decel G sensor
 Replacement of A/T assembly
 Replacement of ABS actuator and electric unit (control unit)
CAUTION:
After removing/replacing the yaw rate/side/decal G sensor or replaci ng the ABS actuator and electric
unit (control unit), the decel G sensor of the ABS act uator and electric unit (control unit) must be cali-
brated first. Refer to BRC-66, "
Description".
Special Repair RequirementINFOID:0000000006233273
CAUTION:
After removing/replacing the yaw rate/side/decal G sensor or replaci ng the ABS actuator and electric
unit (control unit), the decel G sensor of the ABS act uator and electric unit (control unit) must be cali-
brated first. Refer to BRC-66, "
Description".
1.PREPARATION BEFORE CALIBRATION PROCEDURE
1. Park the vehicle on a flat road.
2. Adjust pressure in all tires to the specified value. Refer to WT-69, "
Tire Air Pressure".
>> GO TO 2.
2.PERFORM CALIBRATION
With CONSULT-III
1. Turn ignition switch ON. CAUTION:
Never start the engine.
2. Select “G SENSOR CALIBRATION” in “Work Support” in “TRANSMISSION”.
3. Touch “START”. CAUTION:
Never give any motion to the vehicle during the calibration.
Is
“completed” displayed?
YES >> GO TO 3.
NO >> Perform the calibration again.
3.CHECK DTC
With CONSULT-III
1. Turn ignition switch OFF and wait 10 seconds or more.
2. Turn ignition switch ON.
3. Select “Self Diagnostic Results” in “ABS”.
Is
“C1145” or “C1146” detected?
YES >> Refer to BRC-51, "DTC Index".
NO >> Calibration end.
Revision: 2010 May2011 QX56

TM-94
< BASIC INSPECTION >[7AT: RE7R01B]
A/T FLUID
A/T FLUID
ChangingINFOID:0000000006226791
CAUTION:
 Use only Genuine NISSAN Matic S ATF. Never mix with other ATF.
 Using ATF other than Genuine NI
SSAN Matic S ATF will cause deteri oration in driveability and A/T
durability, and may damage the A/T, which is not covered by the INFINITI new vehicle limited war-
ranty.
 When filling ATF, be careful not to scatte r heat generating parts such as exhaust.
1. Step 1
a. Install the O-ring (315268E000) (A) to the charging pipe (310811EA5A) (B).
2. Step 2
a. Use CONSULT-III to check that the ATF temperature is 40 °C (104 °F) or less.
b. Lift up the vehicle.
c. Remove the drain plug from the oil pan, and then drain the ATF.
d. When the ATF starts to drip, temporarily tighten the drain plug to the oil pan. NOTE:
Never replace drain plug and drain plug gasket with new ones yet.
e. Remove overflow plug from oil pan.
f. Install the charging pipe (A) to the overflow plug hole. CAUTION:
Tighten the charging pipe by hand.
g. Install the bucket pump hose (B) to the charging pipe. CAUTION:
Insert the bucket pump hose all the way to the end of the
charging pipe.
h. Fill approximately 3 liters (3-1/8 US qt, 2-5/8 lmp qt) of the ATF.
i. Remove the bucket pump hose to remove the charging pipe, and then temporarily tighten the overflow plug to the oil pan.
CAUTION:
Quickly perform the procedur e to avoid ATF leakage from
the oil pan.
j. Lift down the vehicle.
k. Start the engine and wait for approximately 3 minutes.
l. Stop the engine.
3. Step 3
a. Repeat “Step 2”.
4. Final Step
a. Use CONSULT-III to check that the ATF temperature is 40 °C (104 °F) or less.
b. Lift up the vehicle.
c. Remove the drain plug from the oil pan, and then drain the ATF.
Recommended fluid and fluid capacity : Refer to TM-296, "General Specification".
JSDIA1334ZZ
JSDIA1335ZZ
Revision: 2010 May2011 QX56

A/T FLUIDTM-95
< BASIC INSPECTION > [7AT: RE7R01B]
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d. When the ATF starts to drip, tighten the drain plug to the oil pan to the specified torque. Refer to TM-182,
"Exploded View".
CAUTION:
Never reuse drain plug and drain plug gasket.
e. Remove overflow plug from oil pan.
f. Install the charging pipe (A) to the overflow plug hole. CAUTION:
Tighten the charging pipe by hand.
g. Install the bucket pump hose (B) to the charging pipe. CAUTION:
Insert the bucket pump hose all the way to the end of the
charging pipe.
h. Fill approximately 3 liters (3-1/8 US qt, 2-5/8 lmp qt) of the ATF.
i. Remove the bucket pump hose to remove the charging pipe, and then temporarily tighten the overflow plug to the oil pan.
CAUTION:
Quickly perform the procedure to avoid ATF leakage from
the oil pan.
j. Lift down the vehicle.
k. Start the engine.
l. Make the ATF temperature approximately 40 °C (104 °F).
NOTE:
The ATF level is greatly affected by the temperat ure. Always check the ATF temperature on “ATF TEMP
1” of “Data Monitor” using CONSULT-III.
m. Park vehicle on level surface and set parking brake.
n. Shift the selector lever through each gear pos ition. Leave selector lever in “P” position.
o. Lift up the vehicle when the ATF temperature reaches 40 °C (104 °F), and remove the overflow plug from
the oil pan.
CAUTION:
Perform “Step 4-o” with the engine at idle.
p. When the ATF starts to drip, tighten the overflow plug to the oil pan to the specified torque. Refer to TM-
182, "Exploded View".
CAUTION:
Never reuse overflow plug.
AdjustmentINFOID:0000000006226792
CAUTION:
 Use only Genuine NISSAN Matic S ATF. Never mix with other ATF.
 Using ATF other than Genuine NI SSAN Matic S ATF will cause deteri oration in driveability and A/T
durability, and may damage the A/T, which is not covered by the INFINITI new vehicle limited war-
ranty.
 When filling ATF, be careful not to sca tter heat generating parts such as exhaust.
 Always maintain the ATF temperature within between 35 °C (95 °F) and 45 °C (113 °F) while checking
with CONSULT-III when the ATF level adjustment is performed.
JSDIA1335ZZ
Recommended fluid and fluid capacity : Refer to TM-296, "General Specification".
Revision: 2010 May2011 QX56

TM-96
< BASIC INSPECTION >[7AT: RE7R01B]
A/T FLUID
1. Install the O-ring (315268E000) (A) to the charging pipe
(310811EA5A) (B).
2. Start the engine.
3. Make the ATF temperature approximately 40 °C (104 °F).
NOTE:
The ATF level is greatly affected by the temperature. Always
check the ATF temperature on “ATF TEMP 1” of “Data Monitor”
using CONSULT-III.
4. Park vehicle on level surface and set parking brake.
5. Shift the selector lever through each gear position. Leave selec- tor lever in “P” position.
6. Lift up the vehicle.
7. Check the ATF leakage from transmission.
8. Remove overflow plug from oil pan.
9. Install the charging pipe (A) to the overflow plug hole. CAUTION:
Tighten the charging pipe by hand.
10. Install the bucket pump hose (B) to the charging pipe. CAUTION:
Insert the bucket pump hose all the way to the end of the
charging pipe.
11. Fill approximately 0.5 liters (1/2 US qt, 1/2 lmp qt) of the ATF.
12. Check that the ATF leaks when removing the charging pipe and the bucket pump hose. If the A TF does not leak, refill the ATF.
CAUTION:
Perform “Step 12” with the engine at idle.
13. When the ATF starts to drip, tighten the overflow pl ug to the oil pan to the specified torque. Refer to TM-
182, "Exploded View".
CAUTION:
Never reuse overflow plug.
JSDIA1334ZZ
JSDIA1335ZZ
Revision: 2010 May2011 QX56

A/T POSITIONTM-101
< BASIC INSPECTION > [7AT: RE7R01B]
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A/T POSITION
InspectionINFOID:0000000006226794
1. Place selector lever in “P” position, and turn ignition switch ON (engine stop).
2. Check that selector lever can be shifted to other than “P” position when brake pedal is depressed. Also
check that selector lever can be shifted from “P” position only when brake pedal is depressed.
3. Shift the selector lever and check for excessive effort, sticking, noise or rattle.
4. Confirm that the selector lever stops at each pos ition by feeling the engagement when it is moved through
all the positions. Check whether or not the actual pos ition the selector lever matches the position shown
by the shift position indicator and the A/T body.
5. The method of operating the lever to individual positions cor- rectly is shown in the figure.
6. When selector button is pressed in “P”, “R”, or “N” position with-
out applying forward/backward force to selector lever, check but-
ton operation for sticking.
7. Confirm that the back-up lamps illuminate only when lever is placed in the “R” position. Confirm that the back-up lamps do not
illuminate when selector lever is pushed against “R” position in
the “P” or “N” position.
8. Confirm that the engine can only be started with the selector lever in the “P” and “N” positions. (With selector lever in the “P”
position, engine can be started even when selector lever is
moved forward and backward.)
9. Make sure that A/T is locked completely in “P” position.
10. When selector lever is set to manual shift gate, ma ke sure that manual mode is displayed on combination
meter.
In addition, a set shift position must be changed when t he selector lever is shifted to the “+” or “−” side in
the manual mode. (Only while driving.)
AdjustmentINFOID:0000000006379166
1. Shift selector lever in “P” position.
2. Loosen nut (1).
3. Turn the manual lever (2) all the way in the “P” range direction
[ (A)].
4. Hold and push the control cable (3 ) in the vehicle front direction
[ (B)], and tighten the nut by hand with cable set in free condi-
tion.
CAUTION:
Be careful not put any load to manual lever.
NOTE:
Press control cable with a force of 9.8 N (approximately 1 kg, 2.2
lb).
5. Tighten nut to specified torque. Refer to TM-178, "
Exploded View".
JSDIA0790GB
JSDIA1587ZZ
Revision: 2010 May2011 QX56

U1000 CAN COMM CIRCUITTM-103
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006226798
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communica tion speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicl e, and each control unit shares information and links
with other control units during operation (not independently ). In CAN communication, control units are con-
nected with 2 communication lines (CAN-H line, CAN-L li ne) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
DTC LogicINFOID:0000000006226799
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Run engine for at least 2 cons ecutive seconds at idle speed.
3. Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”
Is
“U1000” detected?
YES >> Go to TM-103, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226800
Go to LAN-18, "Trouble Diagnosis Flow Chart".
DTC Trouble diagnosis name DTC is detected if... Possible cause
U1000 CAN Communication Line TCM is not transmitting or re-
ceiving CAN communication
signal for 2 seconds or more. Harness or connectors
(CAN communication line is
open or shorted.)
TCM
Revision: 2010 May2011 QX56

TM-106
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0705 TRANSMISSION RANGE SWITCH A
P0705 TRANSMISSION RANGE SWITCH A
DTC LogicINFOID:0000000006226804
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously c onducted, always turn ignition switch OFF and wait at
least 10 seconds before performing the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select “ACCELE POSI” and “VHCL/S SE-A/T” in “Data Monitor” in “TRANSMISSION”.
3. Shift the selector lever throughout the entire shift positi on from “P” to “D”. (Hold the selector lever at each
position for 2 seconds or more)
4. Drive vehicle and maintain the following conditions for 2 seconds or more.
5. Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0705” detected?
YES >> Go to TM-106, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226805
1.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0705 Transmission Range Switch A
Circuit (PRNDL Input) The TCM detects an ON/OFF
combination pattern other than
that of the transmission range
switches 1, 2, 3 and 4. (For ON/
OFF combination patterns of
transmission range switches,
refer to
TM-12, "
A/T CONTROL
SYSTEM : Transm ission Range
Switch".)  Harness or connectors
(Transmission range switch-
es 1, 2, 3, 4 and TCM circuit
is open or shorted.)
 Transmission range switches
1, 2, 3 and 4
ACCELE POSI : More than 1.0/8
VHCL/S SE-A/T : 10 km/h (7 MPH) or more
Revision: 2010 May2011 QX56