2007 INFINITI QX56 battery

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

AT-204
< SERVICE INFORMATION >
A/T SHIFT LOCK SYSTEM
Shift Lock Control Unit Reference Value
INFOID:0000000003532472
SHIFT LOCK HARNESS CONNECTOR TERMINALS LAYOUT
SHIFT LOCK CONTROL UNIT INSPECTION TABLE
Data are reference values.
NOTE:
Confirm that the pointer swings only momentarily because the output time is so short. If the inspection is done with an oscilloscope, it
should be observed that the power source voltage lasts for 3.5 to 10 ms.
Component InspectionINFOID:0000000003532473
SHIFT LOCK SOLENOID
WCIA0550E
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONVOLTAGE
(Approx.)
1Y/RPower sourceIgnition switch: “ON” Battery voltage
Ignition switch: “OFF” Battery voltage
2L/R Detention switch (for
key)When selector lever is not in "P" position with key inserted. Battery voltage
Except the above 0V
3GRDetention switch (for
shift)When selector lever is not in "P" position Battery voltage
Except the above 0V
4 R/G Stop lamp switchWhen brake pedal is depressed Battery voltage
When brake pedal is released 0V
5 W/R Vehicle speed signal — —
6 G/R Ignition signalIgnition switch: “OFF” 0V
Ignition switch: “ON” Battery voltage
7 R/W Shift lock solenoidWhen brake pedal is depressed with ignition switch "ON". 0V
When brake pedal is depressed. Battery voltage
8 B Ground Always 0V
9 G/W Key lock solenoidWhen the selector lever is set to a position other than the “P” po-
sition, and the key switch is turned from “ON” to “OFF”Battery voltage for ap-
prox. 0.1 sec. (Note)
Except the above 0V
10 W/G Key unlock solenoidWhen ignition switch is not in "ON” position with key inserted.Battery voltage for ap-
prox. 0.1 sec. (Note)
Except the above 0V

A/T SHIFT LOCK SYSTEM
AT-205
< SERVICE INFORMATION >
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• Check operation by applying battery voltage to A/T device terminal
9 and ground to terminal 10.
CAUTION:
Be sure to apply the voltage of the correct polarity to the
respective terminals. Otherwise, the part may be damaged.
DETENTION SWITCH
For key:
• Check continuity between terminals of the A/T device.
DETENTION SWITCH
For shift:
• Check continuity between terminals of the A/T device.
KEY LOCK SOLENOID
Key lock
• Check operation by applying battery voltage to key switch and key
lock solenoid terminal 1 and ground to terminal 2.
CAUTION:
Be careful not to cause burnout of the harness.
Key unlock
LCIA0328E
Condition Terminal No. Continuity
When selector lever is “P” position.
5 - 6No
When selector lever is not “P” position. Yes
LIIA1599E
Condition Terminal No. Continuity
When selector lever is “P” position.
3 - 4No
When selector lever is not “P” position. Yes
WCIA0401E
WCIA0240E

AT-206
< SERVICE INFORMATION >
A/T SHIFT LOCK SYSTEM
• Check operation by applying battery voltage to key switch and key
lock solenoid terminal 2 and ground to terminal 1.
CAUTION:
Be careful not to cause burnout of the harness.
KEY SWITCH
• Check continuity between terminals of the key switch and key lock
solenoid.
STOP LAMP SWITCH
• Check continuity between terminals of the stop lamp switch con-
nector.
Check stop lamp switch after adjusting brake pedal.
WCIA0241E
Condition Terminal No. Continuity
Key inserted
3 - 4Ye s
Key withdrawn No
SCIA5662E
Condition Terminal No. Continuity
When brake pedal is depressed
3 - 4Ye s
When brake pedal is released No
WCIA0559E

SHIFT CONTROL SYSTEM
AT-207
< SERVICE INFORMATION >
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SHIFT CONTROL SYSTEM
Control Device Removal and InstallationINFOID:0000000003532474
REMOVAL
1. Remove negative battery terminal. Refer to SC-4.
2. Remove A/T finisher. Refer to IP-10, "
Removal and Installation".
3. Disconnect selector control cable.
4. Disconnect A/T device harness connector.
5. Remove control device assembly.
INSTALLATION
Installation is in reverse order of removal. Be careful of the following:
• After installation is completed, adjust and check A/T position.
1. Select lever knob 2. A/T console finisher 3. Control device assembly
4. Position lamp 5. A/T selector control cable 6. Lock plate
LCIA0348E

ON-VEHICLE SERVICE
AT-211
< SERVICE INFORMATION >
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CONTROL VALVE WITH TCM REMOVAL AND INSTALLATION
Removal
1. Disconnect negative battery terminal
2. Drain ATF through drain plug.
3. Disconnect A/T assembly harness connector.
1. Transmission 2. Snap ring 3. Sub-harness
4. Control valve with TCM 5. Bracket 6. A/T fluid temperature sensor 2
7. Oil pan gasket 8. Brackets 9. Oil pan bolt
10. Oil pan 11. Magnet 12. Drain plug
13. Drain plug gasket 14. Terminal cord assembly 15. O-ring
AWDIA0024ZZ

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