engine NISSAN 350Z 2007 Z33 Automatic Transmission Owner's Guide

AT-52
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Judgment of Line Pressure Test
ROAD TEST
Description

The road test inspects overall performance of A/T and analyzes possible malfunction causes.

The road test is performed in the following three stages.
1. Check before engine is started. Refer to AT- 5 3 , "
Check Before Engine is Started" .
2. Check at idle. Refer to AT- 5 3 , "
Check at Idle" .
3. Cruise test
–Inspect all the items from Part 1 to Part 3. Refer to AT- 5 5 , "Cruise Test — Part 1" , AT- 5 7 , "Cruise Test —
Part 2" and AT- 5 8 , "Cruise Test — Part 3" .

Before beginning the road test, check the test procedure and inspection items.

Test all inspection items until the symptom is uncovered. Diagnose NG items when all road tests are com-
plete.
Judgment Possible cause
Idle speedLow for all positions
(“P”, “R”, “N”, “D”, “M”)Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example

Oil pump wear

Pressure regulator valve or plug sticking or spring fatigue

Oil strainer
oil pump
pressure regulator valve passage oil leak

Engine idle speed too low
Only low for a specific
positionPossible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
HighPossible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example

Accelerator pedal position signal malfunction

A/T fluid temperature sensor malfunction

Line pressure solenoid malfunction (sticking in OFF state, filter clog, cut line)

Pressure regulator valve or plug sticking
Stall speedLine pressure does
not rise higher than
the line pressure for
idle.Possible causes include a sensor malfunction or malfunction in the pressure adjustment func-
tion.
For example

Accelerator pedal position signal malfunction

TCM breakdown

Line pressure solenoid malfunction (shorting, sticking in ON state)

Pressure regulator valve or plug sticking

Pilot valve sticking or pilot filter clogged
The pressure rises,
but does not enter the
standard position.Possible causes include malfunctions in the pressure supply system and malfunction in the
pressure adjustment function.
For example

Accelerator pedal position signal malfunction

Line pressure solenoid malfunction (sticking, filter clog)

Pressure regulator valve or plug sticking

Pilot valve sticking or pilot filter clogged
Only low for a specific
positionPossible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.

TROUBLE DIAGNOSIS
AT-53
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Revision: 2006 November2007 350Z
Check Before Engine is StartedNCS00025
1. CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on level surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp light up for about 2 seconds?
YES >> 1. Turn ignition switch OFF.
2. Perform self-diagnostics and record all NG items on the AT- 4 4 , "
DIAGNOSTIC WORKSHEET"
. Refer to AT- 8 6 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 9 2 , "Diagnostic Procedure With-
out CONSULT-III" .
3. Go to AT- 5 3 , "
Check at Idle" .
NO >> Stop the road test and go to AT- 1 7 2 , "
A/T Check Indicator Lamp Does Not Come On" .
Check at IdleNCS00026
1. CHECK STARTING THE ENGINE
1. Park vehicle on level surface.
2. Move selector lever to “P” or “N” position.
3. Turn ignition switch OFF.
4. Start engine.
Does the engine start?
YES >> GO TO 2.
NO >> Stop the road test and go to AT- 1 7 3 , "
Engine Cannot Be Started in “P” or “N” Position" .
2. CHECK STARTING THE ENGINE
1. Turn ignition switch ON. (Do not start engine.)
2. Move selector lever in “D”, “M” or “R” position.
3. Start engine.
Does the engine start in each position?
YES >> Stop the road test and go to AT- 1 7 3 , "Engine Cannot Be Started in “P” or “N” Position" .
NO >> GO TO 3.
3. CHECK “P” POSITION FUNCTIONS
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release the parking brake.
4. Push the vehicle forward or backward.
5. Engage the parking brake.
When you push the vehicle with disengaging the parking brake, does it move?
YES >> Enter a check mark at AT- 1 7 3 , "In “P” Position, Vehicle Moves When Pushed" on the AT- 4 4 ,
"DIAGNOSTIC WORKSHEET" , then continue the road test.
NO >> GO TO 4.

AT-54
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
4. CHECK “N” POSITION FUNCTIONS
1. Start engine.
2. Move selector lever to “N” position.
3. Release the parking brake.
Does vehicle move forward or backward?
YES >> Enter a check mark at AT- 1 7 4 , "In “N” Position, Vehicle Moves" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
NO >> GO TO 5.
5. CHECK SHIFT SHOCK
1. Engage the brake.
2. Move selector lever to “D” position.
When the A/T is shifted from
“N” to “D”, is there an excessive shock?
YES >> Enter a check mark at AT- 1 7 5 , "Large Shock (“N” to “D” Position)" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
NO >> GO TO 6.
6. CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Release the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at AT- 1 7 7 , "
Vehicle Does Not Creep Backward in “R” Position" on the AT- 4 4 ,
"DIAGNOSTIC WORKSHEET" , then continue the road test.
7. CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the A/T is put into the “D” position.
Does the vehicle creep forward in the
“D” position?
YES >> Go to AT- 5 5 , "Cruise Test — Part 1" , AT- 5 7 , "Cruise Test — Part 2" and AT- 5 8 , "Cruise Test —
Part 3" .
NO >> Enter a check mark at AT- 1 7 9 , "
Vehicle Does Not Creep Forward in “D” Position" on the AT- 4 4 ,
"DIAGNOSTIC WORKSHEET" , then continue the road test. Go to AT- 5 5 , "Cruise Test — Part 1"
, AT- 5 7 , "Cruise Test — Part 2" and AT- 5 8 , "Cruise Test — Part 3" .

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
Cruise Test — Part 1NCS00027
1. CHECK STARTING OUT FROM D1
1. Drive the vehicle for about 10 minutes to warm up the engine oil and ATF.
Appropriate temperature for the ATF: 50 to 80°C (122 to 176°F)
2. Park the vehicle on a level surface.
3. Move selector lever to “P” position.
4. Start engine.
5. Move selector lever to “D” position.
6. Press the accelerator pedal about half-way down to accelerate the vehicle.
With CONSULT-III
Read the gear position. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Starts from D
1 ?
YES >> GO TO 2.
NO >> Enter a check mark at AT- 1 8 1 , "
Vehicle Cannot Be Started from D1" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
2. CHECK SHIFT-UP D1 → D2
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D1 → D2 ) at the appro-
priate speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position, and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift
-up D1 → D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at AT- 1 8 3 , "
A/T Does Not Shift: D1 → D2" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
3. CHECK SHIFT-UP D2 → D3
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D2 → D3 ) at the appro-
priate speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position, and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift-up D
2 → D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at AT- 1 8 5 , "
A/T Does Not Shift: D2 → D3" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D3 → D4 ) at the appro-
priate speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position, and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift-up D
3 → D4 at the correct speed?
YES >> GO TO 5.
NO >> Enter a check mark at AT- 1 8 7 , "
A/T Does Not Shift: D3 → D4" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.

AT-56
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
5. CHECK SHIFT-UP D4 → D5
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D4 → D5 ) at the appro-
priate speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position, and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift-up D
4 → D5 at the correct speed?
YES >> GO TO 6.
NO >> Enter a check mark at AT- 1 8 9 , "
A/T Does Not Shift: D4 → D5" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
6. CHECK LOCK-UP
When releasing accelerator pedal (closed throttle position signal: OFF) from D
5 , check lock-up from D5 to L/
U. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Select “TCC SOLENOID” with the “MAIN SIGNALS” mode for “A/T”. Refer to AT- 8 4 , "
CONSULT-III REFER-
ENCE VALUE" .
Does it lock-up?
YES >> GO TO 7.
NO >> Enter a check mark at AT- 1 9 1 , "
A/T Does Not Lock-up" on the AT- 4 4 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
7. CHECK LOCK-UP HOLD
Check hold lock-up.
With CONSULT-III
Select “TCC SOLENOID” with the “MAIN SIGNALS” mode for “A/T”. Refer to AT- 8 4 , "
CONSULT-III REFER-
ENCE VALUE" .
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Enter a check mark at AT- 1 9 3 , "
A/T Does Not Hold Lock-up Condition" on the AT- 4 4 , "DIAGNOS-
TIC WORKSHEET" , then continue the road test.
8. CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate.
With CONSULT-III
Select “TCC SOLENOID” with the “MAIN SIGNALS” mode for “A/T”. Refer to AT- 8 4 , "
CONSULT-III REFER-
ENCE VALUE" .
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at AT- 1 9 4 , "
Lock-up Is Not Released" on the AT- 4 4 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
9. CHECK SHIFT-DOWN D5 → D4
Decelerate by pressing lightly on the brake pedal.
With CONSULT-III
Read the gear position and engine speed. AT- 8 8 , "
DATA MONITOR MODE" .
When the A/T shift
-down D5 → D4 , does the engine speed drop smoothly back to idle?
YES >> 1. Stop the vehicle.
2. Go to AT- 5 7 , "
Cruise Test — Part 2" .
NO >> Enter a check mark at AT- 1 9 5 , "
Engine Speed Does Not Return to Idle" on the AT- 4 4 , "DIAG-
NOSTIC WORKSHEET" , then continue the road test. Go to AT- 5 7 , "Cruise Test — Part 2" .

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
Cruise Test — Part 2NCS00028
1. CHECK STARTING FROM D1
1. Move selector lever into “D” position.
2. Accelerate at half throttle.
With CONSULT-III
Read the gear position. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does it start from D1?
YES >> GO TO 2.
NO >> Enter a check mark at AT- 1 8 1 , "
Vehicle Cannot Be Started from D1" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
2. CHECK SHIFT-UP D1 → D2
Press the accelerator pedal down all the way and inspect whether or not the A/T shifts up (D1 → D2 ) at the
correct speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift-up D
1 → D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at AT- 1 8 3 , "
A/T Does Not Shift: D1 → D2" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
3. CHECK SHIFT UP D2 → D3
Press the accelerator pedal down all the way and inspect whether or not the A/T shifts up (D2 → D3 ) at the
correct speed. Refer to AT- 5 8 , "
Vehicle Speed at When Gears Shifting Occurs" .
With CONSULT-III
Read the gear position, throttle position and vehicle speed. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift-up D
2 → D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at AT- 1 8 5 , "
A/T Does Not Shift: D2 → D3" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4 AND ENGINE BRAKE
When the A/T changes speed D
3 → D4 , return the accelerator pedal.
With CONSULT-III
Read the gear position. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Does the A/T shift
-up D3 → D4 and apply the engine brake?
YES >> 1. Stop the vehicle.
2. Go to AT- 5 8 , "
Cruise Test — Part 3" .
NO >> Enter a check mark at AT- 1 8 7 , "
A/T Does Not Shift: D3 → D4" on the AT- 4 4 , "DIAGNOSTIC
WORKSHEET" , then continue the road test. Go to AT- 5 8 , "Cruise Test — Part 3" .

AT-58
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Cruise Test — Part 3NCS00029
1. MANUAL MODE FUNCTION
Move to manual mode from “D” position.
Does it switch to manual mode?
YES >> GO TO 2.
NO >> Continue road test and add check mark to AT- 1 9 6 , "
Cannot Be Changed to Manual Mode" on the
AT- 4 4 , "
DIAGNOSTIC WORKSHEET" .
2. CHECK SHIFT-DOWN
During manual mode driving, is downshift from M
5 → M4 → M3 → M2 → M1 performed?
With CONSULT-III
Read the gear position. Refer to AT- 8 8 , "
DATA MONITOR MODE" .
Is downshifting correctly performed?
YES >> GO TO 2.
NO >> Enter a check mark at “A/T Does Not Shift” at the corresponding position (5th → 4th, 4th → 3rd,
3rd → 2nd, 2nd → 1st) on the AT- 4 4 , "
DIAGNOSTIC WORKSHEET" , then continue the road test.
3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M
1 position?
YES >> 1. Stop the vehicle.
2. Perform self-diagnostics. Refer to AT- 8 6 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 9 2 ,
"Diagnostic Procedure Without CONSULT-III" .
NO >> Enter a check mark at AT- 2 0 2 , "
Vehicle Does Not Decelerate by Engine Brake" on the AT- 4 4 ,
"DIAGNOSTIC WORKSHEET" , then continue trouble diagnosis.
Vehicle Speed at When Gears Shifting OccursNCS0002A

At half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed at Which Lock-up Occurs/ReleasesNCS0002B

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.
Throttle positionVehicle speed km/h (MPH)
D1 →D2D2 →D3D3 →D4D4 →D5D5 →D4D4 →D3D3 →D2D2 →D1
Full throttle 50 – 54
(31 – 34)97 – 105
(60 – 65)154 – 164
(96 – 102)224 – 234
(139 – 145)220 – 230
(137 – 143)145 – 155
(90 – 96)86 – 94
(53 – 58)39 – 43
(24 – 27)
Half throttle 29 – 33
(18 – 21)63 – 69
(39 – 43)100 – 108
(62 – 67)136 – 144
(85 – 89)88 – 96
(55 – 60)64 – 72
(40 – 45)28 – 34
(17 – 21)9 – 13
(6 – 8)
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 62 – 70 (39 – 44) 59 – 67 (37 – 42)
Half throttle 136 – 144 (85 – 89) 88 – 96 (55 – 60)

TROUBLE DIAGNOSIS
AT-59
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Revision: 2006 November2007 350Z
Symptom ChartNCS0002C

The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.

Overhaul and inspect inside the A/T only if A/T fluid condition is NG. Refer to AT- 4 9 , "A/T Fluid Con-
dition Check".
No. Items Symptom Condition Diagnostic ItemReference
page
1
Shift
ShockLarge shock. (“N” → “
D” position)
Refer to AT-175,
"Large Shock (“N” to
“D” Position)" .ON vehicle1. Engine idle speedEC-76
2. Engine speed signalAT- 11 3
3. Accelerator pedal position sensorAT-131
4. A/T positionAT-206
5. A/T fluid temperature sensorAT-134
6. Front brake solenoid valveAT-147
7. CAN communication lineAT- 9 4
8. A/T fluid level and stateAT- 4 9
9. Line pressure testAT- 5 0
10. Control valve with TCMAT-215
OFF vehicle11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT-255
2Shock is too large
when changing D1 →
D
2 or M1 → M2 .ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. Direct clutch solenoid valveAT-149
4. CAN communication lineAT- 9 4
5. Engine speed signalAT- 11 3
6. Turbine revolution sensorAT-106
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT-215
OFF vehicle 10. Direct clutchAT-288
3Shock is too large
when changing D2 →
D
3 or M2 → M3 .ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. High and low reverse clutch solenoid valveAT-151
4. CAN communication lineAT- 9 4
5. Engine speed signalAT- 11 3
6. Turbine revolution sensorAT-106
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT-215
OFF vehicle 10. High and low reverse clutchAT-286

AT-60
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
4
Shift
ShockShock is too large
when changing D3 →
D
4 or M3 → M4 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 1
2. A/T positionAT- 2 0 6
3. Input clutch solenoid valveAT- 1 4 5
4. CAN communication lineAT- 9 4
5. Engine speed signalAT- 11 3
6. Turbine revolution sensorAT- 1 0 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT- 2 1 5
OFF vehicle 10. Input clutchAT- 2 7 6
5Shock is too large
when changing D4 →
D
5 or M4 → M5 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 1
2. A/T positionAT- 2 0 6
3. Front brake solenoid valveAT- 1 4 7
4. CAN communication lineAT- 9 4
5. Engine speed signalAT- 11 3
6. Turbine revolution sensorAT- 1 0 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT- 2 1 5
OFF vehicle10. Front brake (brake band)AT- 2 5 511. Input clutchAT- 2 7 6
6Shock is too large for
downshift when accel-
erator pedal is
pressed.ON vehicle1. Accelerator pedal position sensorAT- 1 3 1
2. A/T positionAT- 2 0 6
3. CAN communication lineAT- 9 4
4. Engine speed signalAT- 11 3
5. Turbine revolution sensorAT- 1 0 6
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
7. A/T fluid level and stateAT- 4 9
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Front brake (brake band)AT- 2 5 510. Input clutchAT- 2 7 6
11. High and low reverse clutchAT- 2 8 6
12. Direct clutchAT- 2 8 8
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
7
Shift
ShockShock is too large for
upshift when acceler-
ator pedal is released.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. Engine speed signalAT- 11 3
4. CAN communication lineAT- 9 4
5. Turbine revolution sensorAT-106
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
7. A/T fluid level and stateAT- 4 9
8. Control valve with TCMAT-215
OFF vehicle9. Front brake (brake band)AT-25510. Input clutchAT-276
11. High and low reverse clutchAT-286
12. Direct clutchAT-288
8Shock is too large for
lock-up.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. Engine speed signalAT- 11 3
4. CAN communication lineAT- 9 4
5. Turbine revolution sensorAT-106
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
7. Torque converter clutch solenoid valveAT-125
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT-215
OFF vehicle 10. Torque converterAT-255
9Shock is too large
during engine brake.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. CAN communication lineAT- 9 4
4. A/T fluid level and stateAT- 4 9
5. Control valve with TCMAT-215
OFF vehicle6. Front brake (brake band)AT-2557. Input clutchAT-276
8. High and low reverse clutchAT-286
9. Direct clutchAT-288
No. Items Symptom Condition Diagnostic ItemReference
page