2010 INFINITI QX56 sensor
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TM-128
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
22Slips/Will
Not En-
gage When “D” position, re-
mains in 5GR.
ON vehicle1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Front brake solenoid valve TM-84
4. Line pressure testTM-157
5. CAN communication line LAN-4
6. Control valve with TCMTM-172
OFF vehicle7. Front brake (brake band)
TM-1728. Input clutchTM-172
9. Gear systemTM-172
10. High and low reverse clutchTM-172
23Vehicle cannot be
started from D1.ON vehicle
1. Fluid level and state
TM-148
2. Accelerator pedal position sensor TM-71
3. Line pressure testTM-157
4. CAN communication line LAN-4
5. Control valve with TCMTM-172
OFF vehicle6. Torque converter
TM-172
7. Oil pump assemblyTM-223
8. 3rd one-way clutchTM-172
9. 1st one-way clutchTM-232
10. Gear systemTM-172
11. Reverse brakeTM-172
12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to TM-
8, TM-9. TM-172
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
24
Does not lock-up. ON vehicle1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Engine speed signal TM-53
4. Input speed sensorTM-48
5. Torque converter clutch solenoid valveTM-65
6. CAN communication line LAN-4
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-1729. Oil pump assemblyTM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3824 of 4210
SYSTEM SYMPTOMTM-129
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
25
Slips/Will
Not en-
gage Does not hold lock-up
condition.
ON vehicle1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Engine speed signal TM-53
4. Input speed sensorTM-48
5. Torque converter clutch solenoid valveTM-65
6. CAN communication line LAN-4
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-1729. Oil pump assemblyTM-172
26Lock-up is not re-
leased. ON vehicle1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Engine speed signal TM-53
4. Input speed sensorTM-48
5. Torque converter clutch solenoid valveTM-65
6. CAN communication line LAN-4
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-1729. Oil pump assemblyTM-172
27No shock at all or the
clutch slips when vehi-
cle changes speed D1
→
D2. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Direct clutch solenoid valve TM-86
4. CAN communication line LAN-4
5. Line pressure testTM-157
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. 3rd one-way clutchTM-172
10. Gear systemTM-172
11. Direct clutchTM-172
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3825 of 4210
TM-130
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
28Slips/Will
Not en-
gage No shock at all or the
clutch slips when vehi-
cle changes speed D2
→ D3.
ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. High and low reverse clutch solenoid valve TM-88
4. CAN communication line LAN-4
5. Line pressure testTM-157
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. 3rd one-way clutchTM-172
10. Gear systemTM-172
11. High and low reverse clutchTM-172
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
29 No shock at all or the
clutch slips when vehi-
cle changes speed D3
→ D4. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Input clutch solenoid valve TM-82
4. Front brake solenoid valveTM-84
5. CAN communication line LAN-4
6. Line pressure testTM-157
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-172
9. Oil pump assemblyTM-172
10. Input clutchTM-172
11. Gear systemTM-172
12. High and low reverse clutchTM-172
13. Direct clutchTM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3826 of 4210
SYSTEM SYMPTOMTM-131
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P30
Slips/Will
Not en-
gage No shock at all or the
clutch slips when vehi-
cle changes speed D4
→
D5. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Front brake solenoid valve TM-84
4. Direct clutch solenoid valveTM-86
5. CAN communication line LAN-4
6. Line pressure testTM-157
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-172
9. Oil pump assemblyTM-172
10. Front brake (brake band)TM-172
11. Input clutchTM-172
12. Gear systemTM-172
13. High and low reverse clutchTM-172
31When you press the
accelerator pedal and
shift speed D5→ D4
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Front brake solenoid valve TM-84
4. Direct clutch solenoid valveTM-86
5. CAN communication line LAN-4
6. Line pressure testTM-157
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-172
9. Oil pump assemblyTM-172
10. Input clutchTM-172
11. Gear systemTM-172
12. High and low reverse clutchTM-172
13. Direct clutchTM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3827 of 4210
TM-132
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
32Slips/Will
Not en-
gage When you press the
accelerator pedal and
shift speed D4→ D3
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Input clutch solenoid valve TM-82
4. Front brake solenoid valveTM-84
5. CAN communication line LAN-4
6. Line pressure testTM-157
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-172
9. Oil pump assemblyTM-172
10. 3rd one-way clutchTM-172
11. Gear systemTM-172
12. High and low reverse clutchTM-172
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
33 When you press the
accelerator pedal and
shift speed D3→ D2
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. High and low reverse clutch solenoid valve TM-88
4. Direct clutch solenoid valveTM-86
5. CAN communication line LAN-4
6. Line pressure testTM-157
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-172
9. Oil pump assemblyTM-172
10. 3rd one-way clutchTM-172
11. Gear systemTM-172
12. Direct clutchTM-172
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3828 of 4210
SYSTEM SYMPTOMTM-133
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
34
Slips/Will
Not En-
gage When you press the
accelerator pedal and
shift speed D2→ D1
the engine idles or the
transmission slips. ON vehicle
1. Fluid level and state
TM-148
2. Output speed sensor and vehicle speed signal TM-50,
TM-76
3. Direct clutch solenoid valve TM-86
4. CAN communication line LAN-4
5. Line pressure testTM-157
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. 3rd one-way clutchTM-172
10. 1st one-way clutchTM-172
11. Gear systemTM-172
12. Reverse brakeTM-172
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9.TM-172
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
35 With selector lever in
“D” position, accelera-
tion is extremely poor. ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Transmission range switchTM-45
6. Control cable adjustmentTM-164
7. Control valve with TCMTM-172
OFF vehicle8. Torque converter
TM-204
9. Oil pump assemblyTM-172
10. 1st one-way clutchTM-172
11. Gear systemTM-172
12. Reverse brakeTM-172
13. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9.TM-172
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3829 of 4210
TM-134
< SYMPTOM DIAGNOSIS >
SYSTEM SYMPTOM
36Slips/Will
Not En-
gage With selector lever in
“R” position
, accelera-
tion is extremely poor. ON vehicle1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. High and low reverse clutch solenoid valve LAN-4
5. CAN communication lineLAN-4
6. Transmission range switchTM-45
7. Control cable adjustmentTM-164
8. Control valve with TCMTM-172
OFF vehicle9. Gear system
TM-17210. Output shaftTM-172
11. Reverse brakeTM-172
37While starting off by
accelerating in 1st, en-
gine races or slippage
occurs. ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Control valve with TCMTM-172
OFF vehicle6. Torque converter
TM-172
7. Oil pump assemblyTM-172
8. 3rd one-way clutchTM-172
9. 1st one-way clutchTM-232
10. Gear systemTM-172
11. Reverse brakeTM-172
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
38 While accelerating in
2nd, engine races or
slippage occurs. ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Direct clutch solenoid valveTM-86
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. 3rd one-way clutchTM-172
10. Gear systemTM-172
11. Direct clutchTM-172
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to TM-8
, TM-9. TM-172
No. Items
Symptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56
Page 3830 of 4210
SYSTEM SYMPTOMTM-135
< SYMPTOM DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P39
Slips/Will
Not En-
gage While accelerating in
3rd, engine races or
slippage occurs.
ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. High and low reverse clutch solenoid valveTM-88
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. 3rd one-way clutchTM-172
10. Gear systemTM-172
11. High and low reverse clutchTM-172
12. Forward one- way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
TM-8
, TM-9.TM-172
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
TM-8
, TM-9. TM-172
40 While accelerating in
4th, engine races or
slippage occurs. ON vehicle
1. Fluid level and state
TM-148
2. Line pressure testTM-157
3. Accelerator pedal position sensor TM-71
4. CAN communication line LAN-4
5. Input clutch solenoid valveTM-82
6. Control valve with TCMTM-172
OFF vehicle7. Torque converter
TM-172
8. Oil pump assemblyTM-172
9. Input clutchTM-172
10. Gear systemTM-172
11. High and low reverse clutchTM-172
12. Direct clutchTM-172
No. ItemsSymptom Condition Diagnostic ItemReference
page
Revision: April 20092010 QX56