check transmission fluid INFINITI QX56 2007 Factory Owner's Manual

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-193
< SERVICE INFORMATION >
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1. Turn ignition switch “ON”.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for
"A/T" with CONSULT-II.
3. Read out "OD CONT SW" switch moving selector lever to each
position.
Without CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine)
2. Check voltage between A/T device harness connector terminal
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to AT-13, "
Checking Automatic
Transmission Fluid (ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK CONTROL CABLE
Check the control cable.
• Refer to AT-208, "
Checking of A/T Position".
OK or NG
OK >> GO TO 5.
NG >> Adjust control cable. Refer to AT-208, "
Adjustment of A/
T Position".
Monitor item Condition Display value
OD CONT SWWhen setting the selector
lever to "4" and "3" posi-
tion.ON
When setting selector le-
ver to other positions.OFF
LCIA0339E
Item Connector No. Terminal No. ConditionData
(Approx.)
4th position
switchM203 1 - GroundWhen setting
the selector le-
ver to "4" and
"3" position.0V
When setting
selector lever
to other posi-
tions.Battery volt-
age
LCIA0340E
SAT638A
LCIA0345E

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-195
< SERVICE INFORMATION >
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Check the A/T fluid level. Refer to AT-13, "Checking Automatic
Transmission Fluid (ATF)".
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3.CHECK CONTROL CABLE
Check the control cable.
• Refer to AT-208, "
Checking of A/T Position".
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to AT-208, "
Adjustment of A/
T Position".
4.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-210, "
Control Valve with TCM and A/T Fluid Temperature Sensor 2".
2. Check A/T fluid condition. Refer to AT-51, "
Inspections Before
Trouble Diagnosis".
OK or NG
OK >> GO TO 5.
NG >> GO TO 8.
5.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-60,
"Symptom Chart" (Symptom No.15).
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again. Refer to AT-59, "
Cruise Test - Part 3".
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT-82, "
TCM Input/Output Signal Reference
Va l u e".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
SAT638A
LCIA0345E
SCIA5199E

AT-196
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
8.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT-60,
"Symptom Chart" (Symptom No.15).
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
A/T Does Not Shift: 3rd gear → 2nd gearINFOID:0000000003532466
SYMPTOM:
When shifted from 33 to 22 position, does not downshift from 3rd to 2nd gears.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer to AT-83, "
CONSULT-II Function (A/T)".
Do the self-diagnosis results indicate PNP switch, ATF pressure switch 6?
YES >> Check the malfunctioning system. Refer to AT- 9 9' AT-156.
NO >> GO TO 2.
2.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to AT-13, "
Checking Automatic
Transmission Fluid (ATF)".
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3.CHECK CONTROL CABLE
Check the control cable.
• Refer to AT-208, "
Checking of A/T Position".
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to AT-208, "
Adjustment of A/
T Position".
4.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-210, "
Control Valve with TCM and A/T Fluid Temperature Sensor 2".
SAT638A
LCIA0345E

AT-198
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
1. Turn ignition switch “ON”.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for
"A/T" with CONSULT-II.
3. Read out "1 POSITION SW" switch moving selector lever to
each position.
Without CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine)
2. Check voltage between A/T device harness connector terminal
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to AT-13, "
Checking Automatic
Transmission Fluid (ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK CONTROL CABLE
Check the control cable.
• Refer to AT-208, "
Checking of A/T Position".
OK or NG
OK >> GO TO 5.
NG >> Adjust control cable. Refer to AT-208, "
Adjustment of A/
T Position".
5.CHECK A/T FLUID CONDITION
Monitor item Condition Display value
1 POSITION SWWhen setting the selector
lever to "1" position.ON
When setting selector le-
ver to other positions.OFF
LCIA0339E
Item Connector No. Terminal No. ConditionData
(Approx.)
1st position
switchM203 7 - GroundWhen setting
the selector le-
ver to "1" posi-
tion.0V
When setting
selector lever
to other posi-
tions.Battery volt-
age
LCIA0341E
SAT638A
LCIA0345E

AT-200
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
1. Turn ignition switch “ON”.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for
"A/T" with CONSULT-II.
3. Read out "1 POSITION SW" moving switch selector lever to
each position.
Without CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine)
2. Check voltage between A/T device harness connector terminal
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to AT-13, "
Checking Automatic
Transmission Fluid (ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK CONTROL CABLE
Check the control cable.
• Refer to AT-208, "
Checking of A/T Position".
OK or NG
OK >> GO TO 5.
NG >> Adjust control cable. Refer to AT-208, "
Adjustment of A/
T Position".
5.CHECK A/T FLUID CONDITION
Monitor item Condition Display value
1 POSITION SWWhen setting the selector
lever to "1" position.ON
When setting selector le-
ver to other positions.OFF
LCIA0339E
Item Connector No. Terminal No. ConditionData
(Approx.)
1st position
switchM203 7 - GroundWhen setting
the selector le-
ver to "1" posi-
tion.0V
When setting
selector lever
to other posi-
tions.Battery volt-
age
LCIA0341E
SAT638A
LCIA0345E

ON-VEHICLE SERVICE
AT-209
< SERVICE INFORMATION >
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ON-VEHICLE SERVICE
Oil PanINFOID:0000000003532477
REMOVAL AND INSTALLATION
Removal
1. Drain A/T fluid. Refer to AT-13, "Changing Automatic Transmission Fluid (ATF)".
2. Remove oil pan clips (1).
3. Remove oil pan (2).
4. Remove oil pan gasket.
• : Front
• : Oil pan bolts
• Drain plug (3)
5. Check foreign materials in oil pan to help determine cause of malfunction. If the A/T fluid is very dark, has
some burned smell, or contains foreign particles, friction material (clutches, band) may need replacement.
A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and
clutches to stick and can inhibit pump pressure.
CAUTION:
If friction material is detected, flush the transmission cooler after repair. Refer to AT-15, "
A/T Fluid
Cooler Cleaning".
6. Remove magnets from oil pan.
Installation
1. Install the oil pan magnets as shown.
AWDIA0023ZZ
SCIA5200E
SCIA5200E

AT-218
< SERVICE INFORMATION >
ON-VEHICLE SERVICE
17. Install snap ring to A/T assembly harness connector.
18. Connect A/T assembly harness connector.
19. Connect the negative battery terminal
20. Refill the A/T with fluid and check fluid level and for fluid leak-
age. Refer to AT-13, "
Changing Automatic Transmission Fluid
(ATF)".
CAUTION:
After completing installation, check A/T fluid leakage and fluid
level. Refer to AT-13, "
Changing Automatic Transmission Fluid
(ATF)", AT-13, "Checking Automatic Transmission Fluid (ATF)".
A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION
Removal
1. Disconnect negative battery terminal
2. Remove oil pan and oil pan gasket. Refer to AT-209, "
Oil Pan".
3. Disconnect A/T fluid temperature sensor 2 connector (A).
CAUTION:
Be careful not to damage connector.
4. Straighten terminal clip to free A/T fluid temperature sensor 2
harness.
• : Terminal clip
5. Remove A/T fluid temperature sensor 2 with bracket from con-
trol valve with TCM.
6. Remove bracket from A/T fluid temperature sensor 2.
Installation
SCIA5039E
SCIA8125E
SCIA5253E
SCIA5264E

ON-VEHICLE SERVICE
AT-219
< SERVICE INFORMATION >
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1. Install A/T fluid temperature sensor 2 to bracket.
2. Install A/T fluid temperature sensor 2 (with bracket) in control
valve with TCM. Tighten A/T fluid temperature sensor 2 bolt to
the specified torque. Refer to AT-228, "
Component".
CAUTION:
Adjust bolt hole of bracket to bolt hole of control valve with
TCM.
3. Connect A/T fluid temperature sensor 2 connector (A).
4. Securely fasten A/T fluid temperature sensor 2 harness with ter-
minal clip.
• : Terminal clip
5. Install oil pan to transmission case. Refer to AT-209, "
Oil Pan".
6. Connect the negative battery terminal
7. Refill the A/T with fluid and check fluid level and for fluid leakage. Refer to AT-13, "
Changing Automatic
Transmission Fluid (ATF)".
CAUTION:
After completing installation, check for A/T fluid leakage and fluid level. Refer to AT-13, "
Changing
Automatic Transmission Fluid (ATF)", AT-13, "Checking Automatic Transmission Fluid (ATF)".
Rear Oil SealINFOID:0000000003532479
REMOVAL AND INSTALLATION
Removal
SCIA5264E
SCIA5253E
SCIA8125E

AT-220
< SERVICE INFORMATION >
ON-VEHICLE SERVICE
1. Remove rear propeller shaft. Refer to PR-8, "Removal and
Installation".
2. Remove transfer from transmission (4WD models). Refer to TF-
128, "Removal and Installation".
3. Remove rear oil seal using suitable tool.
CAUTION:
Be careful not to scratch rear extension assembly (2WD
models) or adapter case assembly (4WD models).
Installation
1. Install new rear oil seal until it is flush with component face into
the extension case (2WD models) using Tool, or adapter case
(4WD models) using suitable tool.
CAUTION:
• Apply ATF to rear oil seal.
• Do not reuse rear oil seal.
2. Install transfer to transmission (4WD models). Refer to TF-128,
"Removal and Installation".
3. Install rear propeller shaft. Refer to PR-8, "
Removal and Installa-
tion".
CAUTION:
After completing installation, check for A/T fluid leakage and
fluid level. Refer to AT-13, "
Changing Automatic Transmission
Fluid (ATF)" and AT-13, "Checking Automatic Transmission
Fluid (ATF)".
SCIA5254E
Tool number : ST33400001 (J-26082)
SCIA5583E

AT-224
< SERVICE INFORMATION >
TRANSMISSION ASSEMBLY
8. Remove crankshaft position sensor (POS) from A/T assembly.
CAUTION:
• Do not subject it to impact by dropping or hitting it.
• Do not disassemble.
• Do not allow metal filings or foreign material to get on the
sensor front edge magnetic area.
• Do not place in an area affected by magnetism.
9. Remove fluid cooler tube.
10. Remove dust cover from converter housing.
11. Turn crankshaft to access and remove the four bolts for drive
plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
12. Support A/T assembly with a transmission jack.
CAUTION:
When setting the transmission jack, be careful not to allow
it to collide against the drain plug.
13. Remove cross member using power tool.
14. Remove air breather hose. Refer to AT-221, "
Removal and
Installation".
15. Disconnect A/T assembly connector.
16. Remove A/T fluid indicator pipe from A/T assembly.
17. Plug any openings such as the A/T fluid indicator pipe hole.
18. Remove the A/T assembly to engine bolts using power tool.
19. Remove A/T assembly from vehicle using transmission jack.
CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to a transmission jack.
INSPECTION
Installation and Inspection of Torque Converter
• After inserting a torque converter to a transmission, be sure to
check dimension A to ensure it is within specifications.
INSTALLATION
Installation of the remaining components is in the reverse order of the removal, while paying attention to the
following:
LCIA0334E
LCIA0335E
SCIA0499E
Dimension A : 24.0 mm (0.94 in) or more
SAT017B