engine INFINITI QX56 2010 Factory Service Manual

TM-136
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
41Slips/Will
Not En-
gage While accelerating in
5th, engine races or
slippage occurs.
ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Front brake solenoid valveTM-84
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. Front brake (brake band)TM-172
10. Input clutchTM-172
11. Gear systemTM-172
12. High and low reverse clutchTM-172
42Slips at lock-up. ON vehicle1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Engine speed signal TM-53
4. Input speed sensorTM-48
5. Torque converter clutch solenoid valveTM-65
6. CAN communication line LAN-4
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-1729. Oil pump assemblyTM-172
43No creep at all. ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. Direct clutch solenoid valveTM-86
5. Transmission range switchTM-45
6. CAN communication line LAN-4
7. Control cable adjustmentTM-164
8. Control valve with TCMTM-172
OFF vehicle9. Torque converter
TM-172
10. Oil pump assemblyTM-172
11. 1st one-way clutchTM-172
12. Gear systemTM-172
13. Reverse brakeTM-172
14. Direct clutchTM-172
15. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
16. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

TM-138
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
48Others Shift point is low in “D”
position.
ON vehicle1. Output speed sensor and vehicle speed signal
TM-50
,
TM-76
2. Accelerator pedal position sensor TM-71
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
49Judder occurs during
lock-up. ON vehicle1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. Input speed sensorTM-48
4. Output speed sensor and vehicle speed signalTM-50,
TM-76
5. Accelerator pedal position sensor TM-71
6. CAN communication line LAN-4
7. Torque converter clutch solenoid valveTM-65
8. Control valve with TCMTM-172
OFF vehicle 9. Torque converter TM-172
50Strange noise in “R”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-172
6. Oil pump assemblyTM-172
7. Gear systemTM-172
8. High and low reverse clutchTM-237
9. Reverse brakeTM-172
51Strange noise in “N”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-1726. Oil pump assemblyTM-172
7. Gear systemTM-172
52Strange noise in “D”
position. ON vehicle
1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. CAN communication line LAN-4
4. Control valve with TCMTM-172
OFF vehicle5. Torque converter
TM-172
6. Oil pump assemblyTM-172
7. Gear systemTM-172
8. Forward brake (Parts behind drum support is impossible to
perform inspection by disassembly. Refer to TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

SYSTEM SYMPTOMTM-139
< SYMPTOM DIAGNOSIS >
CEF
G H
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K L
M A
B
TM
N
O P
53
Others Vehicle dose not de-
celerate by engine
brake.
ON vehicle1. Transmission range switch
TM-45
2. Fluid level and stateTM-148
3. Control cable adjustmentTM-164
4. 1st position switchTM-108
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle7. Input clutch
TM-1728. High and low reverse clutchTM-172
9. Direct clutchTM-172
54Engine brake does not
operate in “2” position. ON vehicle1. Transmission range switch
TM-45
2. Fluid level and stateTM-148
3. Control cable adjustmentTM-164
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle7. Front brake (brake band)
TM-1728. Input clutchTM-172
9. High and low reverse clutchTM-172
55Engine brake does not
operate in “1” position. ON vehicle1. Transmission range switch
TM-45
2. Fluid level and stateTM-148
3. Control cable adjustmentTM-164
4. 1st position switchTM-108
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle7. Input clutch
TM-1728. High and low reverse clutchTM-172
9. Direct clutchTM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

TM-140
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
56Others Maximum speed low.
ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Direct clutch solenoid valveTM-86
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. Input clutchTM-172
10. Gear systemTM-172
11. High and low reverse clutchTM-172
12. Direct clutchTM-172
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
14 Forward brake (Parts behind drum support is impossible to
perform inspection by disassembly. Refer to TM-8
,
TM-9. TM-172
57
Extremely large creep. ON vehicle1. Engine idle speed
EC-172. CAN communication lineLAN-4
OFF vehicle 3. Torque converter TM-172
58With selector lever in
“P” position, vehicle
does not enter parking
condition or, with se-
lector lever in another
position, parking con-
dition is not cancelled. ON vehicle
1. Transmission range switch
TM-45
2. Control cable adjustmentTM-164
OFF vehicle 3. Parking pawl components TM-172
59Vehicle runs with
transmission in “P” po-
sition. ON vehicle1. Transmission range switch
TM-45
2. Fluid level and stateTM-148
3. Control cable adjustmentTM-164
4. Control valve with TCMTM-172
5. Parking pawl componentsTM-172
OFF vehicle 6. Gear system TM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

SYSTEM SYMPTOMTM-141
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
60
Others Vehicle runs with
transmission in “N” po-
sition.
ON vehicle
1. Transmission range switch
TM-45
2. Fluid level and stateTM-148
3. Control cable adjustmentTM-164
4. Control valve with TCMTM-172
OFF vehicle5. Input clutch
TM-172
6. Gear systemTM-172
7. Direct clutchTM-172
8. Reverse brakeTM-172
9. Forward one- way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to TM-
8, TM-9. TM-172
10. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
61 Engine does not start
in “N” or “P” position. ON vehicle1. Ignition switch and starter
2. Control cable adjustment
TM-164
3. Transmission range switch TM-45
62Engine starts in posi-
tions other than “N” or
“P”. ON vehicle1. Ignition switch and starter
2. Control cable adjustment
TM-164
3. Transmission range switch TM-45
63Engine stall. ON vehicle1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. Input speed sensorTM-48
4. Torque converter clutch solenoid valveTM-65
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle 7. Torque converter TM-172
64Engine stalls when se-
lect lever shifted “N”
→
“D”, “R”. ON vehicle1. Fluid level and state
TM-148
2. Engine speed signal TM-53
3. Input speed sensorTM-48
4. Torque converter clutch solenoid valveTM-65
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle 7. Torque converter TM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

TM-142
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
65Others Engine speed does
not return to idle.
ON vehicle1. Fluid level and state
TM-148
2. Direct clutch solenoid valve TM-86
3. Front brake solenoid valveTM-84
4. Accelerator pedal position sensorTM-71
5. Output speed sensor and vehicle speed signalTM-50,
TM-76
6. CAN communication line LAN-4
7. Control valve with TCMTM-172
OFF vehicle8. Front brake (brake band)
TM-1729. Direct clutchTM-172
66A/T CHECK indicator
lamp does not come
on. ON vehicle1. CAN communication line
LAN-42. Combination meterMWI-22
3. TCM power supply TM-94
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56

PRECAUTIONSTM-143
< PRECAUTION >
CEF
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M A
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TM
N
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005148716
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for On Board Diagnosis (OBD) System of A/T and EngineINFOID:0000000005148717
The ECM has an on board diagnostic system . It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch “OFF” and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sen sors, solenoid valves, etc. Will
cause the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. May cause the MIL to li ght up due to a short circuit.
• Be sure to connect rubber tubes properly afte r work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.
• Be sure to erase the unnecessary malfunction informa tion (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionINFOID:0000000005148718
NOTE:
If any malfunctions occur in th e RE5R05A model transmission, repl ace the entire transmission assem-
bly.
• Before connecting or disconn ecting the TCM harness connec-
tor, turn ignition switch “O FF” and disconnect negative bat-
tery cable. Because battery voltage is applied to TCM even if
ignition switch is turned “OFF”.
SEF289H
Revision: April 20092010 QX56

TM-148
< ON-VEHICLE MAINTENANCE >
A/T FLUID
ON-VEHICLE MAINTENANCE
A/T FLUID
Checking the A/T Fluid (ATF)INFOID:0000000005148722
CAUTION:
If using the vehicle for towing, the A/T fluid must be replaced as specified. Refer to MA-9, "
Introduc-
tion of Periodic Maintenance".
1. Before driving, the A/T fluid level can be checked at A/T fluid temperatures of 30 ° to 50° C (86° to 122° F) using the “COLD”
range on the A/T fluid level gauge as follows:
a. Park the vehicle on a level surface and set the parking brake.
b. Start the engine and move the selector lever through each gear position. Shift the selector lever into the “P” position.
c. Check the A/T fluid level with the engine idling.
d. Remove the A/T fluid level gauge and wipe it clean with a lint- free paper.
CAUTION:
When wiping the A/T fluid from the A/ T fluid level gauge,
always use a lint-free paper, not a cloth.
e. Re-insert the A/T fluid level gauge into the A/T fluid charging pipe until the cap contacts the t op of the A/T fluid charging pipe
as shown.
CAUTION:
To check A/T fluid level, insert th e A/T fluid level gauge until
the cap contacts the top of the A/T fluid charging pipe, with
the gauge reversed from th e normal inserted position.
f. Remove the A/T fluid level gauge and note the A/T fluid level. If the A/T fluid level is at low si de of range, add A/T fluid to the
transmission through the A/T fluid charging pipe.
CAUTION:
Do not overfill the transmission with A/T fluid.
g. Install the A/T fluid level gauge and the A/T fluid level gauge bolt.
2. Warm up the engine and transmission.
3. Check for any A/T fluid leaks.
4. Drive the vehicle to increase the A/T fluid temperature to 80 ° C (176 ° F).
LLIA0071E
A/T fluid level
gauge bolt : Refer to
TM-186, "Removal and Installation (2WD)" or TM-188, "Removal
and Installation (4WD)"
SCIA2899E
Revision: April 20092010 QX56

TM-150
< ON-VEHICLE MAINTENANCE >
A/T FLUID
Changing the A/T Fluid (ATF)
INFOID:0000000005148723
CAUTION:
If using the vehicle for towing, the A/T fl uid must be replaced as specified. Refer to MA-9, "
Introduc-
tion of Periodic Maintenance".
1. Drive the vehicle to warm up the A/T fluid to approximately 80 ° C (176 ° F).
2. Stop the engine.
3. Remove the A/T fluid level gauge.
4. Drain the A/T fluid from the drain plug hole, then install the drain plug with a new gasket. Refill the transmission with new A/T
fluid. Always refill with the same volume as the drained A/T fluid.
Use the A/T fluid level gauge to check the A/T fluid level as
shown. Add A/T fluid as necessary.
• To flush out the old A/T fluid from the transmission oil coolers, pour new A/T fluid into the A/T fluid charg-
ing pipe with the engine idling and at the same time drain the old A/T fluid from the auxiliary transmis-
sion oil cooler hose return line.
• When the color of the A/T fluid coming out of the auxiliary transmission oil cooler hose return line is
about the same as the color of the new A/T fluid, flushing out the old A/T fluid is complete. The amount
of new A/T fluid used for flushing should be 30% to 50% increase of the specified capacity.
CAUTION:
• If Genuine NISSAN Matic S ATF is not available, Genuine NISSAN Matic J ATF may also be used.
• Using ATF fluid other than Genuine NISSAN Matic S ATF or Matic J ATF will cause deterioration in driveability and A/T durability, and may damage the A/T, which is not covered by the warranty.
• When filling the transmission with A/T fluid, do not spill the A/T fluid on any heat generating
parts such as the exhaust parts.
• Do not reuse the drain plug gasket.
5. Install the A/T fluid level gauge and tighten the A/T fluid level gauge bolt to specification.
6. Drive the vehicle to warm up the A/T fluid to approximately 80 ° C (176 ° F).
7. Check the fluid level and condition. If the A/T fluid is still dirty, repeat steps 2 through 6.
8. Install the A/T fluid level gauge in the A/T fluid charging pipe and install the A/T fluid level gauge bolt.
9. Tighten the A/T fluid level gauge bolt to specification. Drain plug : Refer to
TM-192, "
Component".
LLIA0071E
A/T fluid grade and capacity : Refer to MA-13, "Fluids and Lubricants".
A/T fluid level
gauge bolt : Refer to TM-186, "
Removal and Installation (2WD)" or TM-188, "Removal and
Installation (4WD)".
LLIA0071E
Revision: April 20092010 QX56

STALL TESTTM-155
< ON-VEHICLE MAINTENANCE >
CEF
G H
I
J
K L
M A
B
TM
N
O P
STALL TEST
Inspection and JudgmentINFOID:0000000005148726
A/T FLUID CHECK
Fluid Leakage and Fluid Level Check
• Inspect for fluid leakage and check the fluid level. Refer to TM-148, "Checking the A/T Fluid (ATF)".
Fluid Condition Check
Inspect the fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the A/
T fluid temperature is 50 to 80 °C (122 to 176 °F). Inspect the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state) Clutch, brake
scorchedReplace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or
cloudy Water in the fluidReplace the ATF and check for plac-
es where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
A/T
Replace the ATF and check for im-
proper operation of the A/T.
SAT638A
SAT647B
SCIA1224E
Revision: April 20092010 QX56