AT-74
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
40
Slips/Will
Not
EngageWhile accelerating in
4th, engine races or
slippage occurs.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 9 4
5. Input clutch solenoid valveAT- 1 4 5
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converterAT- 2 5 5
8. Oil pump assemblyAT- 2 7 1
9. Input clutchAT- 2 7 6
10. Gear systemAT- 2 4 6
11. High and low reverse clutchAT- 2 8 6
12. Direct clutchAT- 2 8 8
41While accelerating in
5th, engine races or
slippage occurs.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 9 4
5. Front brake solenoid valveAT- 1 4 7
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converterAT- 2 5 5
8. Oil pump assemblyAT- 2 7 1
9. Front brake (brake band)AT- 2 5 5
10. Input clutchAT- 2 7 6
11. Gear systemAT- 2 4 6
12. High and low reverse clutchAT- 2 8 6
42 Slips at lock-up.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Engine speed signalAT- 11 3
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converterAT- 2 5 59. Oil pump assemblyAT- 2 7 1
No. Items Symptom Condition Diagnostic ItemReference
page
TROUBLE DIAGNOSIS
AT-75
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
43
Slips/Will
Not
EngageNo creep at all.
Refer to AT-177,
"Vehicle Does Not
Creep Backward in
“R” Position" , AT-179,
"Vehicle Does Not
Creep Forward in “D”
Position" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Accelerator pedal position sensorAT-131
4. Direct clutch solenoid valveAT-149
5. PNP switchAT-102
6. CAN communication lineAT- 9 4
7. A/T positionAT-206
8. Control valve with TCMAT-215
OFF vehicle9. Torque converterAT-255
10. Oil pump assemblyAT-271
11. 1st one-way clutchAT-281
12. Gear systemAT-246
13. Reverse brakeAT-255
14. Direct clutchAT-288
15. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-sectional View" .)AT-255
16. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT-255
44Vehicle cannot run in
all positions.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. PNP switchAT-102
4. A/T positionAT-206
5. Control valve with TCMAT-215
OFF vehicle6. Oil pump assemblyAT-2717. Gear systemAT-246
8. Output shaftAT-255
No. Items Symptom Condition Diagnostic ItemReference
page
TROUBLE DIAGNOSIS
AT-77
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z49
Does Not
ChangeDoes not change M
3
→ M
2 .
Refer to AT-199, "
A/T
Does Not Shift: 3rd
Gear → 2nd Gear" .ON vehicle1. PNP switchAT-102
2. A/T fluid level and stateAT- 4 9
3. A/T positionAT-206
4. Manual mode switchAT-157
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT-215
OFF vehicle7. Front brake (brake band)AT-2558. Input clutchAT-276
9. High and low reverse clutchAT-286
50Does not change M
2
→ M
1 .
Refer to AT-201, "
A/T
Does Not Shift: 2nd
Gear → 1st Gear" .ON vehicle1. PNP switchAT-102
2. A/T fluid level and stateAT- 4 9
3. A/T positionAT-206
4. Manual mode switchAT-157
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT-215
OFF vehicle7. Input clutchAT-2768. High and low reverse clutchAT-286
9. Direct clutchAT-288
51Cannot be changed to
manual mode.
Refer to AT-196,
"Cannot Be Changed
to Manual Mode" .ON vehicle1. Manual mode switchAT-157
2. Turbine revolution sensorAT-106
3. CAN communication lineAT- 9 4
52
OthersShift point is high in
“D” position.ON vehicle1. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108
,
AT-139
2. Accelerator pedal position sensorAT-131
3. CAN communication lineAT- 9 4
4. A/T fluid temperature sensorAT-134
5. Control valve with TCMAT-215
53Shift point is low in “D”
position.ON vehicle1. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108
,
AT-139
2. Accelerator pedal position sensorAT-131
3. CAN communication lineAT- 9 4
4. Control valve with TCMAT-215
No. Items Symptom Condition Diagnostic ItemReference
page
AT-78
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
54
OthersJudder occurs during
lock-up.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. Turbine revolution sensorAT- 1 0 6
4. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
5. Accelerator pedal position sensorAT- 1 3 1
6. CAN communication lineAT- 9 4
7. Torque converter clutch solenoid valveAT- 1 2 5
8. Control valve with TCMAT- 2 1 5
OFF vehicle 9. Torque converterAT- 2 5 5
55Strange noise in “R”
position.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. CAN communication lineAT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converterAT- 2 5 5
6. Oil pump assemblyAT- 2 7 1
7. Gear systemAT- 2 4 6
8. High and low reverse clutchAT- 2 8 6
9. Reverse brakeAT- 2 5 5
56Strange noise in “N”
position.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. CAN communication lineAT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converterAT- 2 5 56. Oil pump assemblyAT- 2 7 1
7. Gear systemAT- 2 4 6
57Strange noise in “D”
position.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. CAN communication lineAT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converterAT- 2 5 5
6. Oil pump assemblyAT- 2 7 1
7. Gear systemAT- 2 4 6
8. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT- 2 5 5
No. Items Symptom Condition Diagnostic ItemReference
page
AT-80
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
62
OthersEngine brake does
not work M2 → M1 .ON vehicle1. PNP switchAT- 1 0 2
2. A/T fluid level and stateAT- 4 9
3. A/T positionAT- 2 0 6
4. Manual mode switchAT- 1 5 7
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Input clutchAT- 2 7 68. High and low reverse clutchAT- 2 8 6
9. Direct clutchAT- 2 8 8
63 Maximum speed low.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 9 4
5. Direct clutch solenoid valveAT- 1 4 9
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converterAT- 2 5 5
8. Oil pump assemblyAT- 2 7 1
9. Input clutchAT- 2 7 6
10. Gear systemAT- 2 4 6
11. High and low reverse clutchAT- 2 8 6
12. Direct clutchAT- 2 8 8
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-17, "
Cross-sectional View" .)AT- 2 5 5
14 Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT- 2 5 5
64Extremely large
creep.ON vehicle1. Engine idle speed EC-76
2. CAN communication lineAT- 9 4
OFF vehicle 3. Torque converterAT- 2 5 5
65With selector lever in
“P” position, vehicle
does not enter parking
condition or, with
selector lever in
another position, park-
ing condition is not
cancelled.ON vehicle1. PNP switchAT- 1 0 2
2. A/T positionAT- 2 0 6
3. Parking pawl componentsAT- 2 4 6
66Vehicle runs with A/T
in “P” position.ON vehicle1. PNP switchAT- 1 0 2
2. A/T fluid level and stateAT- 4 9
3. A/T positionAT- 2 0 6
4. Control valve with TCMAT- 2 1 5
5. Parking pawl componentsAT- 2 4 6
OFF vehicle 6. Gear systemAT- 2 4 6
No. Items Symptom Condition Diagnostic ItemReference
page
TROUBLE DIAGNOSIS
AT-81
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
67
OthersVehicle runs with A/T
in “N” position.
Refer to AT-174, "In
“N” Position, Vehicle
Moves" .ON vehicle1. PNP switchAT-102
2. A/T fluid level and stateAT- 4 9
3. A/T positionAT-206
4. Control valve with TCMAT-215
OFF vehicle5. Input clutchAT-276
6. Gear systemAT-246
7. Direct clutchAT-288
8. Reverse brakeAT-255
9. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-sectional View" .)AT-255
10. Low coast brake (Parts behind drum support is impossi-
ble to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT-255
68Engine does not start
in “N” or “P” position.
Refer to AT-173, "Engine Cannot Be
Started in “P” or “N”
Position" .ON vehicle1. Ignition switch and starterPG-4
,
SC-8
2. A/T positionAT-206
3. PNP switchAT-102
69Engine starts in posi-
tions other than “N” or
“P”.ON vehicle1. Ignition switch and starterPG-4
,
SC-8
2. A/T positionAT-206
3. PNP switchAT-102
70 Engine stall.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. Turbine revolution sensorAT-106
4. Torque converter clutch solenoid valveAT-125
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT-215
OFF vehicle 7. Torque converterAT-255
71Engine stalls when
selector lever shifted
“N” → “D”, “R”.ON vehicle1. A/T fluid level and stateAT- 4 9
2. Engine speed signalAT- 11 3
3. Turbine revolution sensorAT-106
4. Torque converter clutch solenoid valveAT-125
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT-215
OFF vehicle 7. Torque converterAT-255
No. Items Symptom Condition Diagnostic ItemReference
page
AT-82
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
72 OthersEngine speed does
not return to idle.
Refer to AT-195,
"Engine Speed Does
Not Return to Idle" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Direct clutch solenoid valveAT- 1 4 9
3. Front brake solenoid valveAT- 1 4 7
4. Accelerator pedal position sensorAT- 1 3 1
5. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Front brake (brake band)AT- 2 5 59. Direct clutchAT- 2 8 8
No. Items Symptom Condition Diagnostic ItemReference
page
AT-84
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
CONSULT-III Function (TRANSMISSION)NCS0002E
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
FUNCTION
CONSULT-III REFERENCE VALUE
NOTICE:
1. The CONSULT-III electrically displays shift timing and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timing and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-III and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-III indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-III changes at the start of shifting, while gear position is dis-
played upon completion of shifting (which is computed by TCM).
Diagnostic test mode Function
Work supportThis mode enables a technician to adjust some devices faster and more accurately by following the
indications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the ECU can be read.
CAN diagnostic support monitor The results of transmit/receive diagnosis of CAN communication can be read.
Function testPerformed by CONSULT-III instead of a technician to determine whether each system is “OK” or
“NG”.
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.
ECU part number TCM part number can be read.
Item name Condition Display value (Approx.)
ATF TEMP SE 1
0°C (32° F) – 20°C (68°F) – 80°C (176°F)3.3 – 2.7 – 0.9 V
ATF TEMP SE 23.3 – 2.5 – 0.7 V
ATF TEMP 1 Ignition switch ONMeasured ATF temperature is dis-
played.
TCC SOLENOID Lock-up is active 0.4 – 0.6 A
SLCT LVR POSISelector lever in “N” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
VHCL/S SE-A/T During drivingApproximately matches the speed-
ometer reading.
VEHICLE SPEED During drivingApproximately matches the speed-
ometer reading.
ENGINE SPEED Engine runningClosely matches the tachometer
reading.
LINE PRES SOL During driving 0.2 – 0.6 A
TURBINE REV During driving (lock-up ON)Approximately matches the engine
speed.
VHCL/S SE-MTR During drivingApproximately matches the speed-
ometer reading.
ATF PRES SW 2Low coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF