2009 INFINITI QX56 transmission fluid

P1710 TRANSMISSION FLUID TEMPERATURE SENSOR
TM-73
< COMPONENT DIAGNOSIS >
C EF
G H
I
J
K L
M A
B
TM
N
O P
2.CHECK A/T FLUID TEMPERATURE SENSOR 1
Check A/T fluid temperature sensor 1. Refer to TM-73, "Component Inspection"
.
OK or NG
OK >> GO TO 3.
NG >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
3.CHECK SUB-HARNESS
1. Disconnect transmission range switch connector and TCM connector.
2. Check continuity between transmission range switch connector (A) terminals and TCM connector (B) terminals.
3. If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
1. Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
2. Reinstall any part removed.
OK or NG
OK >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform “DTC Confirmation Procedure”.
 Refer to TM-72, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> GO TO 1.
Component InspectionINFOID:0000000003771920
A/T FLUID TEMPERATURE SENSOR 1
1. Remove control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Check resistance between transmission range switch (A) termi- nals.
3. If NG, replace the control valve with TCM. Refer to TM-203,
"Control Valve with TCM and A/T Fluid Temperature Sensor 2"
Item Connector Terminal Continuity
Transmission range switch con-
nector F505 6
Ye s
TCM connector F503 19
Transmission range switch con-
nector F505 7
Ye s
TCM connector F503 18
JSDIA1330ZZ
Name Terminal Temperature
°C
( ° F) Resistance (Ap-
prox.) (k Ω)
0 (32) 15
A/T fluid temperature sensor 1 6-7 20 (68) 6.5 80 (176) 0.9
JSDIA1331ZZ
Revision: December 20092009 QX56

P1774 LOW COAST BRAKE SOLENOIDTM-91
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
With CONSULT-III
1. Start the engine.
2. Select “SELECTION FROM MENU” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Drive vehicle in the “1” or “2” position (“1
1” or “22” gear) and confirm the ON/OFF actuation of the “ATF
PRES SW 2” and “ON OFF SOL”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-92, "Diagnosis Procedure"
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following items:
 The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform “DTC Confirmation Procedure”.
 Refer to TM-90, "DTC Confirmation Procedure"
.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ON OFF SOL Low coast brake engaged. Refer to
TM-9
ON
Low coast brake disengaged. Refer to TM-9
OFF
ATF PRES
SW 2 Low coast brake engaged. Refer to
TM-9
ON
Low coast brake disengaged. Refer to TM-9
OFF
Revision: December 20092009 QX56

MAIN POWER SUPPLY AND GROUND CIRCUITTM-93
< COMPONENT DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
5.DETECT MALFUNCTIONING ITEM
Check the following items:
 The A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
OK or NG
OK >> INSPECTION END
NG-1 >> Self-diagnosis does not activate: GO TO 7.
NG-2 >> DTC is displayed: Check t he malfunctioning system. Refer to TM-32, "CONSULT-III Function
(TRANSMISSION)".
7.CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Disconnect A/T assembly harness connector and TCM connector.
3. Check continuity between A/T assembly harness connector ter- minals and TCM connector terminals.
4. Check continuity between A/T assembly harness connector ter- minals and TCM connector terminals.
5. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to TM-203, "Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
Item Connector Terminal Continuity
A/T assembly harness con-
nector F9 1
Ye s
TCM connector F502 9
A/T assembly harness con-
nector F9 2
Ye s
TCM connector F502 10
A/T assembly harness con-
nector F9 6
Ye s
TCM connector F502 4
SCIA5464E
Item Connector Terminal Continuity
A/T assembly harness con-
nector F9 5
Ye s
TCM connector F504 21
A/T assembly harness con-
nector F9 10
Ye s
TCM connector F504 22
SCIA5465E
Revision: December 20092009 QX56

TCM
TM-117
< ECU DIAGNOSIS >
C EF
G H
I
J
K L
M A
B
TM
N
O P
High and Low Revers
e Clutch Solenoid
 If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF”, the transmission is
held in 4th gear to make driving possible.
Input Speed Sensor 1 or 2
 The control is the same as if there were no input speed sensors, 5GR is prohibited.
DTC Inspection Priority ChartINFOID:0000000003771988
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 is displayed with other DTCs, first pe rform the trouble diagnosis for DTC U1000. Refer to
TM-39, "Diagnosis Procedure"
.
DTC No. IndexINFOID:0000000003771989
NOTE:
If DTC U1000 is displayed with other DTC, first pe rform the trouble diagnosis for DTC U1000. Refer to
TM-39, "Diagnosis Procedure"
.
Priority Detected items (DTC)
1 U1000 CAN COMM CIRCUT
2 Except above
DTC Items
(CONSULT- III screen terms) Reference page
OBD- II Except OBD- II
CONSULT- III GST (*1) CONSULT- III only
“TRANSMISSION”
— P0615 STARTER RELAY TM-40
P0700 P0700 TRANSMISSION CONT TM-43
P0705 P0705 T/M RANGE SWITCH ATM-44
P0710 P1710 TRANS FLUID TEMP SENTM-72
P0717 P0717 INPUT SPEED SENSOR ATM-47
P0720 P0720 OUTPUT SPEED SENSORTM-50
— P0725 ENGINE SPEEDTM-52
P0731 P0731 1GR INCORRECT RATIO TM-55
P0732 P0732 2GR INCORRECT RATIOTM-57
P0733 P0733 3GR INCORRECT RATIOTM-59
P0734 P0734 4GR INCORRECT RATIOTM-61
P0735 P0735 5GR INCORRECT RATIOTM-63
P0740 P0740 TORQUE CONVERTERTM-64
P0744 P0744 TORQUE CONVERTERTM-67
P0745 P0745 PC SOLENOID ATM-68
— P1705 TP SENSORTM-70
— P1721 VEHICLE SPEED SIGNALTM-74
P1730 P1730 INTERLOCK TM-76
— P1731 1GR E/BRAKINGTM-78
P1752 P1752 INPUT CLUTCH SOLENOID TM-80
P1757 P1757 FR BRAKE SOLENOIDTM-82
P1762 P1762 DRCT CLUTCH SOLENOIDTM-84
P1767 P1767 HLR CLUTCH SOLLENOIDTM-86
Revision: December 20092009 QX56

TM-118
< ECU DIAGNOSIS >
TCM
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
DTC Alphabetical IndexINFOID:0000000003771990
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
TM-39, "Diagnosis Procedure"
.
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. P1772 P1772 L C BRAKE SOLENOID
TM-88
P1774 (2*) P1774 L C BRAKE SOLENOID TM-90
U1000 U1000 CAN COMM CIRCUITTM-39
DTC
Items
(CONSULT- III screen terms) Reference page
OBD- II Except OBD- II
CONSULT- III GST (*1) CONSULT- III only
“TRANSMISSION”
Items
(CONSULT- III screen terms) DTC
Reference page
OBD- II Except OBD- II
CONSULT- III GST (*1) CONSULT- III only
“TRANSMISSION”
1ST E/BRAKING — P1731 TM-78
1GR INCORRECT RATIO P0731 P0731TM-55
2GR INCORRECT RATIO P0732 P0732TM-57
3GR INCORRECT RATIO P0733 P0733TM-59
4GR INCORRECT RATIO P0734 P0734TM-61
5GR INCORRECT RATIO P0735 P0735TM-63
INTERLOCK P1730 P1730TM-76
TORQUE CONVERTER P0744 P0744 TM-67
TRAXIS FLUID TEMP SEN P0710 P1710TM-72
CAN COMM CIRCUIT U1000 U1000TM-39
DRCT CLUTCH SOLENOID P1762 P1762 TM-84
ENGINE SPEED — P0725 TM-52
FR BRAKE SOLENOID P1757 P1757TM-82
HLR CLUTCH SOLENOID P1767 P1767TM-86
INPUT CLUTCH SOLENOID P1752 P1752TM-80
PC SOLENOID A P0745 P0745TM-68
LC BRAKE SOLENOID P1772 P1772TM-88
LC BRAKE SOLENOID P1774 P1774 TM-90
T/M RANGE SWITCH A P0705 P0705TM-44
STARTER RELAY — P0615TM-40
TORQUE CONVERTER P0740 P0740TM-64
TRANSMISSION CONT P0700 P0700TM-43
TP SENSOR — P1705TM-70
INPUT SPEED SENSOR A P0717 P0717TM-47
VEHICLE SPEED SIGNAL — P1721TM-74
OUTPUT SPEED SENSOR P0720 P0720TM-50
Revision: December 20092009 QX56

TM-120
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
Check the starting system. Refer to STR-5, "Work Flow".
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
In "P" Position, Vehi cle Moves When PushedINFOID:0000000003771993
SYMPTOM:
Even though the selector lever is set in the “P ” position, the parking mechanism is not actuated,
allowing the vehicle to be moved when it is pushed.
DIAGNOSTIC PROCEDURE
1.CHECK TRANSMISSION RANGE SWITCH CIRCUIT
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Do the self-diagnosis results indicate transmission range switch?
YES >> Check the malfunctioning system. Refer to TM-44, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
Check the control cable.
 Refer to TM-195, "Checking of A/T Position"
.
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to TM-195, "Adjustment of A/
T Position".
3.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-201, "Oil Pan"
.
2. Check A/T fluid condition. Refer to TM-179, "Checking the A/T
Fluid (ATF)".
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.
4.DETECT MALFUNCTIONING ITEM
 Check the malfunction items. If any items are dam aged, repair or replace damaged parts. Refer to TM-152,
"Symptom Table" (Symptom No. 58).
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
In "N" Position, Vehicle MovesINFOID:0000000003771994
SYMPTOM:
Vehicle moves forward or backwar d when selecting “N” position.
DIAGNOSTIC PROCEDURE
LCIA0345E
SCIA5199E
Revision: December 20092009 QX56

SYSTEM SYMPTOMTM-121
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
1.CHECK TRANSMISSION RANGE SWITCH CIRCUIT
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Do the self-diagnostic results indicate transmission range switch?
YES >> Check the malfunctioning system. Refer to TM-44, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
Check the control cable.
 Refer to TM-195, "Checking of A/T Position"
.
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to TM-195, "Adjustment of A/
T Position".
3.CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to TM-179, "Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-201, "Oil Pan"
.
2. Check A/T fluid condition. Refer to TM-179, "Checking the A/T
Fluid (ATF)".
OK or NG
OK >> GO TO 5.
NG >> Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to TM-152,
"Symptom Table" (Symptom No. 60).
5.CHECK SYMPTOM
Check again. Refer to TM-5, "Work Flow"
.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6.PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to TM-104, "Reference Value"
.
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
LCIA0345E
SAT638A
SCIA5199E
Revision: December 20092009 QX56

TM-122
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Large Shock("N" to "D" Position)INFOID:0000000003771995
SYMPTOM:
A noticeable shock occurs when the selector lever is shifted from the “N” to “D” position.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to TM-32, "CONSULT-III Function (TRANSMISSION)"
.
Do the self-diagnostic results indicate A/T fluid temperature sensor, engine speed signal, accelerator pedal
position sensor, front brake solenoid valve, CAN communication line?
YES >> Check the malfunctioning system. Refer to TM-72, "Diagnosis Procedure", TM-52, "Diagnosis
Procedure", TM-70, "Diagnosis Procedure", TM-82, "Diagnosis Procedure", TM-39, "Diagnosis
Procedure".
NO >> GO TO 2.
2.ENGINE IDLE SPEED
Check the engine idle speed. Refer to EC-17, "Idle Speed and Ignition Timing Check"
.
OK or NG
OK >> GO TO 3.
NG >> Repair.
3.CHECK CONTROL CABLE
Check the control cable.
 Refer to TM-195, "Checking of A/T Position"
.
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to TM-195, "Adjustment of A/
T Position".
4.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to TM-179, "Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 5.
NG >> Refill ATF.
5.CHECK LINE PRESSURE
LCIA0345E
SAT638A
Revision: December 20092009 QX56