2011 INFINITI QX56 air condition

TM-90
< BASIC INSPECTION >[7AT: RE7R01B]
DIAGNOSIS AND REPAIR WORK FLOW
Symptoms
† Vehicle does not move ( † Any position † Particular position )
† No upshift ( † 1GR → 2GR † 2GR → 3GR † 3GR → 4GR † 4GR → 5GR † 5GR →
6GR † 6GR → 7GR)
† No downshift ( † 7GR → 6GR † 6GR → 5GR † 5GR → 4GR † 4GR → 3GR † 3GR →
2GR † 2GR → 1GR)
† Lock-up malfunction
† Shift point too high or too low
† Shift shock or slip
† Noise or vibration
† No kick down
† No pattern select
† Others
Frequency † All the time † Under certain conditions † Sometimes ( times a day)
Weather conditions † Not affected
Weather † Fine † Clouding † Raining † Snowing † Other ( )
Te m p . † Hot † Warm
† Cool † Cold †
Temp. [Approx. °C (
° F)]
Humidity † High † Middle † Low
Transmission conditions † Not affected
† Cold † During warm-up † After warm-up
† Engine speed ( rpm)
Road conditions † Not affected
† In town † In suburbs † Freeway † Off road (Up / Down)
Driving conditions † Not affected
† At starting † While idling † While engine racing † At racing †
While cruis-
ing
† While accelerating † While decelerating † While turning (Right / Left)
† Vehicle speed [ km/h ( MPH)]
Other conditions Question Sheet
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

P0717 INPUT SPEED SENSOR ATM-109
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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M A
B
TM
N
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P0717 INPUT SPEED SENSOR A
DTC LogicINFOID:0000000006226808
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
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 “SLCT LVR POSI”, “GEAR”, “VHCL/S SE-A/ T”, “W/O THL POS” and “ENGINE SPEED” in “Data
Monitor” in “TRANSMISSION”.
3. Drive vehicle and maintain the following conditions for 5 seconds or more. CAUTION:
Keep the same gear position.
NOTE:
Driving the vehicle uphill (increased engine load) will hel p maintain the driving conditions required for this
test.
4. Perform “Self Diagnostic Resu lts” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0717” detected?
YES >> Go to TM-109, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226809
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
P0717 Input/Turbine Speed Sensor A
Circuit No Signal The revolution of input speed
sensor 1 and/or 2 is 270 rpm or
less. Harness or connectors
(Sensor circuit is open.)
 Input speed sensor 1 and/or 2
SLCT LVR POSI : D
GEAR : 2nd, 3rd, 4th, 5th or 6th
VHCL/S SE-A/T : More than 40 km/h (25 MPH)
W/O THL POS : ON
ENGINE SPEED : More than 1,500 rpm
Revision: 2010 May2011 QX56

TM-114
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0729 6GR INCORRECT RATIO
P0729 6GR INCORRECT RATIO
DescriptionINFOID:0000000006226815
This malfunction is detected when the A/T does not shift
into 6GR position as instructed by TCM. This is not
only caused by electrical malfunction (circuits open or s horted) but by mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC LogicINFOID:0000000006226816
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
“ TM-115, "
Diagnosis Procedure"” must be performed before starting “DTC CONFIRMATION PROCE-
DURE”.
 Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause secondary malfunction.
 Always drive vehicle at a safe speed.
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 ATF TEMPERATURE
With CONSULT-III
1. Start the engine.
2. Select “ATF TEMP 1” in “Data Monitor” in “TRANSMISSION”.
3. Check ATF temperature is in the following range.
With GST
1. Start the engine.
2. Drive vehicle for approximately 5 minutes in urban areas.
Is ATF temperature within specified range?
YES >> GO TO 3.
NO >> Drive vehicle to warm ATF or stop engine to cool ATF.
3.CHECK SYMPTOM (PART 1)
With CONSULT-III
1. Select “6TH GR FNCTN P0729” in “DTC & SRT confirmation” in “TRANSMISSION”.
2. Drive vehicle with manual mode and maintain the following conditions.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0729 Gear 6 Incorrect Ratio The gear ratio is:
 0.915 or more
 0.813 or less Input clutch solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch
solenoid valve
 Front brake solenoid valve
 Low brake solenoid valve
 2346 brake solenoid valve
 Anti-interlock solenoid valve
 Each clutch and brake
 Output speed sensor
 Input speed sensor 1, 2
 Hydraulic co ntrol circuit
ATF TEMP 1 : 20 °C (68 °F) – 140 °C (284 °F)
Revision: 2010 May2011 QX56

P0729 6GR INCORRECT RATIOTM-115
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
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3. Keep the current driving status for 2 seconds or more if CONSULT-III screen changes from “OUT OF
CONDITION” to “TESTING”.
CAUTION:
When “TESTING” is not indicated on CONSULT-III for a long time, check “Self Diagnostic Results”
in “TRANSMISSION”. When a DTC other than “P0729” is detected, check the DTC. Refer to TM-78,
"DTC Index".
With GST
1. Drive vehicle and maintain the following conditions for 2 seconds or more.
2. Check DTC.
Is
“OUT OF CONDITION”, “STOP VEHICLE” or “COMPLETED RESULT NG” displayed? / Is “P0729”
detected?
YES-1 (OUT OF CONDITION) >>Perform “Step 3” again.
YES-2 (STOP VEHICLE)>>GO TO 4.
YES-3 (COMPLETED RESULT NG)>>Go to TM-115, "
Diagnosis Procedure".
YES-4 (“P0729” is detected)>>Go to TM-115, "
Diagnosis Procedure".
NO >> GO TO 4.
4.CHECK SYMPTOM (PART 2)
1. Stop vehicle.
2. Drive vehicle in “D” position allowing it to shift from 1GR to 7GR and check shift timing and shift shock.
>> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226817
1.DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to check component parts. Refer to TM-226, "
Disassembly".
NOTE:
Check the component parts, referring to “Possible cause” in “DTC DETECTION LOGIC”. Refer to TM-114,
"DTC Logic".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
GEAR : 6th
ACCELE POSI : 0.7/8 or more
VEHICLE SPEED : 10 km/h (7 MPH) or more
Selector lever : “M” position
Gear position : 6th
Accelerator pedal opening : 0.7/8 or more
Vehicle speed : 10 km/h (7 MPH) or more
Revision: 2010 May2011 QX56

TM-116
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0730 INCORRECT GEAR RATIO
P0730 INCORRECT GEAR RATIO
DescriptionINFOID:0000000006226818
 TCM detects a high-rpm state of the under drive sun gear.
 The number of revolutions of the under drive sun gear
is calculated with the input speed sensor 1 and 2.
DTC LogicINFOID:0000000006226819
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
“TM-116, "
Diagnosis Procedure"” must be performed before starting “DTC CONFIRMATION PROCE-
DURE”.
 Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause secondary malfunction.
 Always drive vehicle at a safe speed.
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 “Self Diagnostic Results” in “ENGINE”.
3. Drive vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the
table below.
Hold the accelerator pedal as steady as possible.
With GST
Follow the procedure “With CONSULT-III”.
Is
“P0730” detected?
YES >> Go to TM-116, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226820
1.DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to check component parts. Refer to TM-211, "
Exploded View".
NOTE:
Check the component parts, referring to “Possible cause” in “DTC DETECTION LOGIC”. Refer to TM-116,
"DTC Logic".
Is the inspection result normal?
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0730 Incorrect Gear Ratio The revolution of under drive
sun gear is 8,000 rpm or more.
NOTE:
Not detected when in “P” or “N”
position and during a shift to “P”
or “N” position. 2346 brake solenoid valve
 Front brake solenoid valve
 Input speed sensor 2
ENGINE SPEED Same value as
the Freeze Frame Data.
VEHICLE SPEED Same value as the Freeze Frame Data.
B/FUEL SCHDL Same value as the Freeze Frame Data.
Revision: 2010 May2011 QX56

TM-118
< DTC/CIRCUIT DIAGNOSIS >[7AT: RE7R01B]
P0731 1GR INCORRECT RATIO
P0731 1GR INCORRECT RATIO
DescriptionINFOID:0000000006226821
This malfunction is detected when the A/T does not shift
into 1GR position as instructed by TCM. This is not
only caused by electrical malfunction (circuits open or s horted) but by mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC LogicINFOID:0000000006226822
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
“ TM-119, "
Diagnosis Procedure"” must be performed before starting “DTC CONFIRMATION PROCE-
DURE”.
 Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause secondary malfunction.
 Always drive vehicle at a safe speed.
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 ATF TEMPERATURE
With CONSULT-III
1. Start the engine.
2. Select “ATF TEMP 1” in “Data Monitor” in “TRANSMISSION”.
3. Check ATF temperature is in the following range.
With GST
1. Start the engine.
2. Drive vehicle for approximately 5 minutes in urban areas.
Is ATF temperature within specified range?
YES >> GO TO 3.
NO >> Drive vehicle to warm ATF or stop engine to cool ATF.
3.CHECK SYMPTOM (PART 1)
With CONSULT-III
1. Select “1ST GR FNCTN P0731” in “DTC & SRT confirmation” in “TRANSMISSION”.
2. Drive vehicle with manual mode and maintain the following conditions.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0731 Gear 1 Incorrect Ratio The gear ratio is:
 5.180 or more
 4.594 or less Input clutch solenoid valve
 Direct clutch solenoid valve
 High and low reverse clutch
solenoid valve
 Front brake solenoid valve
 Low brake solenoid valve
 2346 brake solenoid valve
 Anti-interlock solenoid valve
 Each clutch and brake
 Output speed sensor
 Input speed sensor 1, 2
 Hydraulic co ntrol circuit
ATF TEMP 1 : 20 °C (68 °F) – 140 °C (284 °F)
Revision: 2010 May2011 QX56

P0731 1GR INCORRECT RATIOTM-119
< DTC/CIRCUIT DIAGNOSIS > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
3. Keep the current driving status for 2 seconds or more if CONSULT-III screen changes from “OUT OF
CONDITION” to “TESTING”.
CAUTION:
When “TESTING” is not indicated on CONSULT-III for a long time, check “Self Diagnostic Results”
in “TRANSMISSION”. When a DTC other than “P0731” is detected, check the DTC. Refer to TM-78,
"DTC Index".
With GST
1. Drive vehicle and maintain the following conditions for 2 seconds or more.
2. Check DTC.
Is
“OUT OF CONDITION”, “STOP VEHICLE” or “COMPLETED RESULT NG” displayed? / Is “P0731”
detected?
YES-1 (OUT OF CONDITION) >>Perform “Step 3” again.
YES-2 (STOP VEHICLE)>>GO TO 4.
YES-3 (COMPLETED RESULT NG)>>Go to TM-119, "
Diagnosis Procedure".
YES-4 (“P0731” is detected)>>Go to TM-119, "
Diagnosis Procedure".
NO >> GO TO 4.
4.CHECK SYMPTOM (PART 2)
1. Stop vehicle.
2. Drive vehicle in “D” position allowing it to shift from 1GR to 7GR and check shift timing and shift shock.
>> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226823
1.DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to check component parts. Refer to TM-211, "
Exploded View".
NOTE:
Check the component parts, referring to “Possible cause” in “DTC DETECTION LOGIC”. Refer to TM-118,
"DTC Logic".
Is the inspection result normal?
YES >> Replace the control valve & TCM. Refer to TM-182, "Exploded View".
NO >> Repair or replace damaged parts.
GEAR : 1st
ACCELE POSI : 0.7/8 or more
VEHICLE SPEED : 10 km/h (7 MPH) or more
Selector lever : “M” position
Gear position : 1st
Accelerator pedal opening : 0.7/8 or more
Vehicle speed : 10 km/h (7 MPH) or more
Revision: 2010 May2011 QX56