check transmission fluid INFINITI QX56 2008 Factory Owner's Guide

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-201, "
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-201, "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 F5029
A/T assembly harness con-
nector F9
2
Ye s
TCM connector F50210
A/T assembly harness con-
nector F9
6
Ye s
TCM connector F5024
SCIA5464E
Item Connector Terminal Continuity
A/T assembly harness con-
nector F9
5
Ye s
TCM connector F50421
A/T assembly harness con-
nector F9
10
Ye s
TCM connector F50422
SCIA5465E
Revision: March 2010 2008 QX56

SYSTEM SYMPTOMTM-119
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
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, Vehicle Moves When PushedINFOID:0000000001604181
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 i ndicate transmission range switch?
YES >> Check the malfunctioning system. Refer to TM-43, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
Check the control cable.
• Refer to TM-194, "
Checking of A/T Position".
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to TM-194, "
Adjustment of A/
T Position".
3.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-199, "
Oil Pan".
2. Check A/T fluid condition. Refer to TM-178, "
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 damaged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No. 58).
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
In "N" Position, Vehicle MovesINFOID:0000000001604182
SYMPTOM:
Vehicle moves forward or backwar d when selecting “N” position.
DIAGNOSTIC PROCEDURE
LCIA0345E
SCIA5199E
Revision: March 2010 2008 QX56

TM-120
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
1.CHECK TRANSMISSION RANGE SWITCH CIRCUIT
Perform self-diagnosis. Refer to TM-32, "
CONSULT-III Functi on (TRANSMISSION)".
Do the self-diagnostic results indicate transmission range switch?
YES >> Check the malfunctioning system. Refer to TM-43, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
Check the control cable.
• Refer to TM-194, "
Checking of A/T Position".
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to TM-194, "
Adjustment of A/
T Position".
3.CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to TM-178, "
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-199, "
Oil Pan".
2. Check A/T fluid condition. Refer to TM-178, "
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-151,
"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-103, "
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: March 2010 2008 QX56

SYSTEM SYMPTOMTM-121
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Large Shock("N" to "D" Position)INFOID:0000000001604183
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-71, "Diagnosis Procedure", TM-51, "Diagnosis
Procedure", TM-69, "Diagnosis Procedure", TM-82, "Diagnosis Procedure", TM-38, "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-194, "
Checking of A/T Position".
OK or NG
OK >> GO TO 4.
NG >> Adjust control cable. Refer to TM-194, "
Adjustment of A/
T Position".
4.CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to TM-178, "
Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 5.
NG >> Refill ATF.
5.CHECK LINE PRESSURE
LCIA0345E
SAT638A
Revision: March 2010 2008 QX56

TM-122
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
Check line pressure at idle with selector lever in “D” position. Refer
to TM-187, "
Inspection and Judgment".
OK or NG
OK >> GO TO 8.
NG - 1 >> Line pressure high: GO TO 6.
NG - 2 >> Line pressure low: GO TO 7.
6.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
7.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
- Power train system. Refer to TM-232, "
Disassembly".
- Transmission case. Refer to TM-232, "
Disassembly".
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-199, "
Oil Pan".
2. Check A/T fluid condition. Refer to TM-178, "
Checking the A/T
Fluid (ATF)".
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are dam aged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No.1).
OK or NG
OK >> GO TO 10.
NG >> Repair or replace damaged parts.
10.CHECK SYMPTOM
Check again. Refer to TM-5, "
Work Flow".
OK or NG
SAT494G
SCIA5199E
Revision: March 2010 2008 QX56

SYSTEM SYMPTOMTM-123
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
OK >> INSPECTION END
NG >> GO TO 11.
11 .PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to TM-103, "
Reference Value".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Vehicle Does Not Creep Backward in "R" PositionINFOID:0000000001604184
SYMPTOM:
The vehicle does not creep in the “R” position. Or an extreme lack of acceleration is observed.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to TM-32, "
CONSULT-III Function (TRANSMISSION)".
Do the self-diagnostic results indicate accelerator pedal position sensor, high and low reverse clutch solenoid
valve, CAN communication line, transmission range switch?
YES >> Check the malfunctioning system. Refer to TM-69, "Diagnosis Procedure", TM-86, "Diagnosis
Procedure", TM-43, "Diagnosis Procedure", TM-38, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
Check the control cable.
• Refer to TM-194, "
Checking of A/T Position".
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to TM-194, "
Adjustment of A/
T Position".
3.CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to TM-178, "
Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 4.
NG >> Refill ATF.
4.CHECK STALL TEST
Check stall revolution with selector lever in “1” and “R” positions.
LCIA0345E
SAT638A
Revision: March 2010 2008 QX56

TM-124
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
Refer to TM-185, "Inspection and Judgment".
OK or NG
OK >> GO TO 6.
OK in “1” position, NG in “R” position>>GO TO 5.
NG in both “1” and “R” positions>>GO TO 8.
5.DETECT MALFUNCTIONING ITEM
1. Disassemble A/T. Refer to TM-232, "
Disassembly".
2. Check the following items:
- Reverse brake. Refer to TM-232, "
Disassembly".
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
6.CHECK LINE PRESSURE
Check the line pressure with the engine idling. Refer to TM-187,
"Inspection and Judgment".
OK or NG
OK >> GO TO 9.
NG - 1 >> Line pressure high. GO TO 7.
NG - 2 >> Line pressure low. GO TO 8.
7.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
8.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
- Power train system. Refer to TM-232, "
Disassembly".
- Transmission case. Refer to TM-232, "
Disassembly".
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-199, "
Oil Pan".
SAT493G
SAT494G
Revision: March 2010 2008 QX56

SYSTEM SYMPTOMTM-125
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
2. Check A/T fluid condition. Refer to TM-178, "Checking the A/T
Fluid (ATF)".
OK or NG
OK >> GO TO 10.
NG >> GO TO 13.
10.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No.43).
OK or NG
OK >> GO TO 11.
NG >> Repair or replace damaged parts.
11 .CHECK SYMPTOM
Check again. Refer to TM-5, "
Work Flow".
OK or NG
OK >> INSPECTION END
NG >> GO TO 12.
12.PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to TM-201, "
Control Valve with TCM and A/T Fluid
Temperature Sensor 2".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
13.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No.43).
OK or NG
OK >> GO TO 11.
NG >> Repair or replace damaged parts.
Vehicle Does Not Creep Forward in "D" PositionINFOID:0000000001604185
SYMPTOM:
Vehicle does not creep forward when selecting “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 accelerator pedal position sensor, CAN communication line, transmis-
sion range switch?
YES >> Check the malfunctioning system. Refer to TM-69, "Diagnosis Procedure", TM-43, "Diagnosis
Procedure", TM-38, "Diagnosis Procedure".
NO >> GO TO 2.
2.CHECK CONTROL CABLE
SCIA5199E
Revision: March 2010 2008 QX56

SYSTEM SYMPTOMTM-127
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
NG >> Repair or replace damaged parts.
7.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
- Power train system. Refer to TM-232, "
Disassembly".
- Transmission case. Refer to TM-232, "
Disassembly".
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8.CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to TM-199, "
Oil Pan".
2. Check A/T fluid condition. Refer to TM-178, "
Checking the A/T
Fluid (ATF)".
OK or NG
OK >> GO TO 9.
NG >> GO TO 12.
9.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No.43).
OK or NG
OK >> GO TO 10.
NG >> Repair or replace damaged parts.
10.CHECK SYMPTOM
Check again. Refer to TM-5, "
Work Flow".
OK or NG
OK >> INSPECTION END
NG >> GO TO 11.
11 .PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to TM-103, "
Reference Value".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
12.DETECT MALFUNCTIONING ITEM
• Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to TM-151,
"Symptom Table" (Symptom No.43).
OK or NG
OK >> GO TO 10.
NG >> Repair or replace damaged parts.
SCIA5199E
Revision: March 2010 2008 QX56

TM-128
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
Vehicle Cannot Be Started from D1
INFOID:0000000001604186
SYMPTOM:
Vehicle cannot be started from D1 on cruise test - Part 1.
DIAGNOSTIC PROCEDURE
1.CONFIRM THE SYMPTOM
Check if vehicle creeps in “R” position.
OK or NG
OK >> GO TO 2.
NG >> Refer to TM-123, "
Vehicle Does Not Creep Backward in "R" Position".
2.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to TM-32, "
CONSULT-III Functi on (TRANSMISSION)".
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3.CHECK ACCELERATOR PEDAL POSITION(APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to TM-69, "
Diagnosis Procedure".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace accelera tor pedal position (APP) sensor.
4.CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to TM-178, "
Checking the A/T Fluid
(ATF)".
OK or NG
OK >> GO TO 5.
NG >> Refill ATF.
5.CHECK LINE PRESSURE
Check line pressure at the engine stall point. Refer to TM-187,
"Inspection and Judgment".
OK or NG
OK >> GO TO 8.
NG - 1 >> Line pressure high. GO TO 6.
NG - 2 >> Line pressure low. GO TO 7.
6.DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to TM-201, "
Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2".
2. Disassemble A/T. Refer to TM-232, "
Disassembly".
3. Check the following items:
- Oil pump assembly. Refer to TM-250, "
Oil Pump".
OK or NG
SAT638A
SAT494G
Revision: March 2010 2008 QX56