2011 INFINITI QX56 atf

DIAGNOSIS SYSTEM (TCM)TM-65
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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ASCD-OD CUT (ON/OFF) X — Displays the reception status of ASCD OD can-
cel request signal received via CAN communi-
cation.
ASCD-CRUISE (ON/OFF) X — Displays the reception status of ASCD opera-
tion signal received via CAN communication.
ABS SIGNAL (ON/OFF) X — Displays the re
ception status of ABS operation
signal received via CAN communication.
TCS GR/P KEEP (ON/OFF) X — Displays the reception status of TCS gear keep
request signal received via CAN communica-
tion.
TCS SIGNAL 2 (ON/OFF) X — Displays whether the reception value of A/T
shift schedule change demand signal received
via CAN communication is “cold”.
TCS SIGNAL 1 (ON/OFF) X — Displays whether the reception value of A/T
shift schedule change demand signal received
via CAN communication is “warm”.
LOW/B PARTS (FAIL/NOTFAIL) — — Displays whether the identified malfunction
point judged by TCM is the related parts of low
brake.
HC/IC/FRB PARTS (FAIL/NOTFAIL) — — Displays whether the identified malfunction
point judged by TCM is the related parts of high
and low reversed clutch, input clutch or front
brake.
IC/FRB PARTS (FAIL/NOTFAIL) — — Displays whether the identified malfunction
point judged by TCM is the related parts of input
clutch or front brake.
HLR/C PARTS (FAIL/NOTFAIL) — — Displays whether the identified malfunction
point judged by TCM is the related parts of high
and low reversed clutch.
W/O THL POS (ON/OFF) X — Displays the kickdown condition signal status
received via CAN communication.
CLSD THL POS (ON/OFF) X — Displays the idling status signal status received
via CAN communication.
DRV CST JUDGE (DRIVE/COAST) — — Displays the judgment results of “driving” or
“coasting” judged by TCM.
SHIFT IND SIGNAL — — Displays the transmission value of shift position
signal transmitted via CAN communication.
STARTER RELAY (ON/OFF) — — Displays the command status from TCM to
starter relay.
F-SAFE IND/L (ON/OFF) — — Displays the transmission status of A/T CHECK
indicator lamp signal transmitted via CAN com-
munication.
ATF WARN LAMP (ON/OFF) — — Displays the transmission status of ATF tem-
perature signal transmitted via CAN communi-
cation.
MANU MODE IND (ON/OFF) — — Displays the transmission status of manual
mode signal transmitted via CAN communica-
tion.
ON OFF SOL MON (ON/OFF) — — Monitors the command value from TCM to the
anti-interlock solenoid, and displays the moni-
tor status.
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM ITEM
Revision: 2010 May2011 QX56

TM-68
< ECU DIAGNOSIS INFORMATION >[7AT: RE7R01B]
TCM
ECU DIAGNOSIS INFORMATION
TCM
Reference ValueINFOID:0000000006226782
VALUES ON DIAGNOSIS TOOL
NOTE:
1. The CONSULT-III electrically displays shift timi
ng and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timi ng and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sens ors, etc.) may be malfunctioning. Check mechanical
parts in accordance with the specified diagnostic procedures.
2. Shift schedule (that implies gear position) on CONSULT-III may slightly differ from that is described in Ser-
vice Manual. This occurs because of the reasons as per the following:
- Actual shift schedule has more or less tolerance or allowance
- Shift schedule in Service Manual refers to the point where shifting starts
- Gear position on CONSULT-III indicates the point where shifting completes
3. Display of solenoid valves on CONSULT-III changes at t he start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).
CONSULT-III MONITOR ITEM
Item name Condition Value / Status (Approx.)
VHCL/S SE-A/T During driving Approximately equals the speed-
ometer reading.
ESTM VSP SIG During driving Approximately equals the speed-
ometer reading.
OUTPUT REV During driving (lock-up ON) Tachometer / Gear ratio
INPUT SPEED During driving (lock-up ON) Approximately equals the engine
speed.
F SUN GR REV During driving Revolution of front sun gear is indi-
cated.
F CARR GR REV During driving Revolution of front carrier is indi-
cated.
ENGINE SPEED Eng ine running Closely equals the tachometer
reading.
TC SLIP SPEED During driving Engine speed − Input speed
ACCELE POSI Accelerator pedal is released 0.0/8
Accelerator pedal is fully depressed 8.0/8
THROTTLE POSI Accelerator pedal is released 0.0/8
Accelerator pedal is fully depressed 8.0/8
ATF TEMP 1 Ignition switch ON Temperature of ATF in the oil pan is
indicated.
ATF TEMP 2 Ignition switch ON Temperature of ATF at the exit of
torque converter.
AT F T E M P S E 1 0 °C (32 ° F) – 20 °C (68 °F) – 80 °C (176 °F) 3.3 – 2.7 – 0.9 V
BATTERY VOLT Ignition switch ON Battery voltage (11 V – 14 V)
LINE PRES SOL During driving 0.2 – 0.6 A
TCC SOLENOID Slip lock-up is active 0.2 – 0.8 A
Lock-up is active 0.8 A
Other than the above 0 A
L/B SOLENOID Low brake is engaged 0.6 – 0.8 A
Low brake is disengaged 0 – 0.05 A
Revision: 2010 May2011 QX56

TM-72
< ECU DIAGNOSIS INFORMATION >[7AT: RE7R01B]
TCM
SHIFT IND SIGNALWhen the selector lever is positioned in between each po-
sition.
OFF
Selector lever in “P” position P
Selector lever in “R” position R
Selector lever in “N” position N
Selector lever in “D” position D
Selector lever in “D” position: 7GR
Selector lever in “D” position: 6GR 6
Selector lever in “D” position: 5GR 5
Selector lever in “D” position: 4GR 4
Selector lever in “D” position: 3GR 3
Selector lever in “D” position: 2GR 2
Selector lever in “D” position: 1GR 1
Selector lever in “M” position: 1GR M1
Selector lever in “M” position: 2GR M2
Selector lever in “M” position: 3GR M3
Selector lever in “M” position: 4GR M4
Selector lever in “M” position: 5GR M5
Selector lever in “M” position: 6GR M6
Selector lever in “M” position: 7GR M7
Driving with DS mode DS
STARTER RELAY Selector lever in “P
” and “N” positions ON
Other than the above OFF
F-SAFE IND/L For 2 seconds after the ignition switch is turned ON ON
Other than the above OFF
ATF WARN LAMP* When TCM transmits the ATF indicator lamp signal ON
Other than the above OFF
MANU MODE IND Driving with manual mode ON
Other than the above OFF
ON OFF SOL MON Selector lever in “P
” and “N” positions
ON
Driving with 1GR to 3GR
Other than the above OFF
START RLY MON Selector lever in “P
” and “N” positions ON
Other than the above OFF
ON OFF SOL Selector lever in “P
” and “N” positions
ON
Driving with 1GR to 3GR
Other than the above OFF
Item name Condition Value / Status (Approx.)
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
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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.
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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 FLUID COOLERTM-97
< BASIC INSPECTION > [7AT: RE7R01B]
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A/T FLUID COOLER
CleaningINFOID:0000000006233276
Whenever an A/T is replaced, the A/ T fluid cooler mounted in the radiator must be inspected and cleaned.
Metal debris and friction material, if present, can becom e trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can bl ock or restrict the flow of ATF. In either case, mal-
function of the newly se rviced A/T may result.
Debris, if present, may build up as ATF enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
CLEANING PROCEDURE
1. Position an oil pan under the A/T inlet and outlet cooler hoses.
2. Identify the inlet and outlet fluid cooler hoses.
3. Disconnect the A/T fluid cooler inlet and outlet rubber hoses
from the steel cooler tubes or by-pass valve.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any ATF that remains in the cooler hoses to drain into the oil pan.
5. Insert the extension adapter hose of a can of Transmission Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
 Wear safety glasses and rubber gloves when spraying theTransmission Cooler Cleaner.
 Spray Transmission Cooler Cleaner only with adequate
ventilation.
 Avoid contact with eyes and skin.
 Never breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmis- sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until ATF flows out of the cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and of the cooler outlet hose.
9. Blow compressed air regulated to 5 to 9 kg/cm
2 (71 to 128 psi)
through the cooler outlet hose for 10 seconds to force out any
remaining ATF.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the A/T fluid cooler steel lines to the A/T.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the A/T by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds.
14. Blow compressed air regulated to 5 to 9 kg/cm
2 (71 to 128 psi) through each steel line from the cooler
side back toward the A/T for 10 seconds to force out any remaining ATF.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform “DIAGNOSIS PROCEDURE”.
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Revision: 2010 May2011 QX56

TM-98
< BASIC INSPECTION >[7AT: RE7R01B]
A/T FLUID COOLER
DIAGNOSIS PROCEDURE
NOTE:
Insufficient cleaning of the cooler inlet hose exte
rior may lead to inaccurate debris identification.
1. Position an oil pan under the A/T inlet and outlet cooler hoses.
2. Clean the exterior and tip of the cooler inlet hose.
3. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
 Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
 Spray Transmission Cooler Cleaner only with adequate
ventilation.
 Avoid contact with eyes and skin.
 Never breath vapors or spray mist.
4. Hold the hose and can as high as possible and spray Transmis- sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until ATF flows out of the cooler inlet hose for 5 seconds.
5. Tie a common white, basket-type coffee filter to the end of the cooler inlet hose.
6. Insert the tip of an air gun into the end of the cooler outlet hose.
7. Wrap a shop rag around the air gun tip and end of cooler outlet hose.
8. Blow compressed air regulated to 5 to 9 kg/cm
2 (71 to 128 psi)
through the cooler outlet hose to force any remaining ATF into
the coffee filter.
9. Remove the coffee filter from the end of the cooler inlet hose.
10. Perform “INSPECTION PROCEDURE”.
INSPECTION PROCEDURE
1. Inspect the coffee filter for debris.
a. If small metal debris less than 1 mm (0.040 in) in size or metal powder is found in the coffee filter, this is normal. If normal
debris is found, the A/T fluid cooler/radiator can be re-used and
the procedure is ended.
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SCIA2967E
Revision: 2010 May2011 QX56