check engine INFINITI FX35 2006 Owner's Manual

TROUBLE DIAGNOSIS AT-53
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Revision: 2006 December 2006 FX35/FX45
Inspections Before Trouble DiagnosisNCS001BH
A/T CHECK
A/T Fluid Leakage and A/T Fluid Level Check
Check for A/T fluid leakage and check the A/T fluid level. Refer to AT- 1 3 , "Checking A/T Fluid" .
A/T Fluid Condition Check
Inspect the A/T fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the A/ T fluid temperature is 50 to 80 °C (122 to 176 °F). Check the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Start engine, apply foot brake, and place selector lever in “D” position.
5. While holding down the foot brake, gradually press down the accelerator pedal.
6. Quickly read off the stall speed, then quickly remove your foot from the accelerator pedal.
CAUTION:
Do not hold down the accelerator pedal for more than 5 sec-
onds during this test.
7. Move the selector lever to the “N” position.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state) Clutch, brake
scorched Replace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or
cloudy Water in the fluid
Replace the ATF and check for
places where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
A/T Replace the ATF and check for
improper operation of the A/T.
SAT638A
SAT647B
SCIA7463E
Stall speed
VQ35DE engine : 2,650 - 2,950 rpm
VK45DE engine : 2,260 - 2,560 rpm
SAT514G

AT-56
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
Judgement of Line Pressure Test
ROAD TEST
Description

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

The road test is carried out in the following three stages.
1. Check before engine is started. Refer to AT- 5 7
.
2. Check at idle. Refer to AT- 5 7
.
3. Cruise test

Inspect all the items from Part 1 to Part 3. Refer to AT- 5 8 , AT- 6 0 , AT- 6 1 .

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.
Judgement Possible cause
Idle speed Low 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 spe-
cific position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment func-
tion.
For example

Accelerator pedal position signal malfunction

ATF temperature sensor malfunction

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

Pressure regulator valve or plug sticking
Stall speed Line pressure does
not rise higher than
the line pressure for
idle. Possible causes include a sensor malfunction or malfunction in the pressure adjustment function.
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 posi-
tion. Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure 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 spe-
cific position Possible 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-57
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Revision: 2006 December 2006 FX35/FX45
Check Before Engine Is StartedNCS001BI
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.
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 8 , "
DIAGNOSTIC WORKSHEET"
. Refer to AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 2 , "Diagnostic Procedure with-
out CONSULT-II" .
3. Go to AT- 5 7 , "
Check at Idle" .
NO >> Stop the road test and go to AT- 1 8 9 , "
A/T CHECK Indicator Lamp Does Not Come On" .
Check at IdleNCS001BJ
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 9 0 , "
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 to “D”, “M” or “R” position.
3. Start engine.
Does the engine start in either position?
YES >> Stop the road test and go to AT- 1 9 0 , "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. Disengage 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 9 1 , "In “P” Position, Vehicle Moves When Pushed" on the AT- 4 8 ,
"DIAGNOSTIC WORKSHEET" , then continue the road test.
NO >> GO TO 4.

AT-58
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
4. CHECK “N” POSITION FUNCTIONS
1. Start engine.
2. Move selector lever to “N” position.
3. Disengage the parking brake.
Does vehicle move forward or backward?
YES >> Enter a check mark at AT- 1 9 2 , "In “N” Position, Vehicle Moves" on the AT- 4 8 , "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 transmission is shifted from
“N” to “D”, is there an excessive shock?
YES >> Enter a check mark at AT- 1 9 3 , "Large Shock (“N” to “D” Position)" on the AT- 4 8 , "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. Disengage the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at AT- 1 9 6 , "
Vehicle Does Not Creep Backward in “R” Position" on the AT- 4 8 ,
"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 8 , "Cruise Test - Part 1" , AT- 6 0 , "Cruise Test - Part 2" , and AT- 6 1 , "Cruise Test - Part
3" .
NO >> Enter a check mark at AT- 1 9 9 , "
Vehicle Does Not Creep Forward in “D” Position" on the AT- 4 8 ,
"DIAGNOSTIC WORKSHEET" , then continue the road test.
Cruise Test - Part 1NCS001BK
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 the engine.
5. Move selector lever to “D” position.
6. Press the accelerator pedal about half-way down to accelerate the vehicle.
With CONSULT-II
Read the gear positions. Refer to AT- 9 5 , "
DATA MONITOR MODE" .
Starts from D1?
YES >> GO TO 2.
NO >> Enter a check mark at AT- 2 0 1 , "
Vehicle Cannot Be Started From D1" on the AT- 4 8 , "DIAGNOS-
TIC WORKSHEET" , then continue the road test.

AT-60
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
6. CHECK LOCK-UP
When releasing accelerator pedal from D5, check lock-up from D5 to L/U. Refer to AT- 6 3 , "
Vehicle Speed at
Which Lock-up Occurs/Releases" .
With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 0 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it lock-up?
YES >> GO TO 7.
NO >> Enter a check mark at AT- 2 1 3 , "
A/T Does Not Lock-up" on the AT- 4 8 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
7. CHECK LOCK-UP HOLD
Check hold lock-up. With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 0 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Enter a check mark at AT- 2 1 5 , "
A/T Does Not Hold Lock-up Condition" on the AT- 4 8 , "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-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for A/T. Refer to AT- 9 0 , "
CONSULT-II REFERENCE
VA L U E" .
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at AT- 2 1 7 , "
Lock-up Is Not Released" on the AT- 4 8 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test.
9. CHECK SHIFT-DOWN D5 → D4
Decelerate by pressing lightly on the brake pedal. With CONSULT-II
Read the gear position and engine speed. Refer to AT- 9 5 , "
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- 6 0 , "
Cruise Test - Part 2" .
NO >> Enter a check mark at AT- 2 1 7 , "
Engine Speed Does Not Return to Idle" on the AT- 4 8 , "DIAG-
NOSTIC WORKSHEET" , then continue the road test. Go to AT- 6 0 , "Cruise Test - Part 2" .
Cruise Test - Part 2NCS001BL
1. CHECK STARTING FROM D1
1. Move selector lever into “D” position.
2. Accelerate at half throttle.
With CONSULT-II
Read the gear position. Refer to AT- 9 5 , "
DATA MONITOR MODE" .
Does it start from D1?
YES >> GO TO 2.
NO >> Enter a check mark at AT- 2 0 1 , "
Vehicle Cannot Be Started From D1" on the AT- 4 8 , "DIAGNOS-
TIC WORKSHEET" , then continue the road test.

TROUBLE DIAGNOSIS AT-61
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Revision: 2006 December 2006 FX35/FX45
2. CHECK SHIFT-UP D1 → D2
Press the accelerator pedal down all the way and check whether or not the A/T shifts up (D1 → D2) at the cor-
rect speed. Refer to AT- 6 2 , "
Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 5 , "
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- 2 0 4 , "
A/T Does Not Shift: D1 → D2" on the AT- 4 8 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
3. CHECK SHIFT-UP D2 → D3
Press the accelerator pedal down all the way and check whether or not the A/T shifts up (D2 → D3) at the cor-
rect speed. Refer to AT- 6 2 , "
Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 5 , "
DATA MONITOR MODE" .
Does the A/T shift-up D2
→ D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at AT- 2 0 6 , "
A/T Does Not Shift: D2 → D3" on the AT- 4 8 , "DIAGNOSTIC
WORKSHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4 AND ENGINE BRAKE
When the A/T changes speed D3 → D4, return the accelerator pedal.
With CONSULT-II
Read the gear position. Refer to AT- 9 5 , "
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- 6 1 , "
Cruise Test - Part 3" .
NO >> Enter a check mark at AT- 2 0 8 , "
A/T Does Not Shift: D3 → D4" on the AT- 4 8 , "DIAGNOSTIC
WORKSHEET" , then continue the road test. Go to AT- 6 1 , "Cruise Test - Part 3" .
Cruise Test - Part 3NCS001BM
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- 2 1 9 , "
Cannot Be Changed to Manual Mode" on the
AT- 4 8 , "
DIAGNOSTIC WORKSHEET" .
2. CHECK SHIFT-DOWN
During manual mode driving, is downshift from M5 → M4 → M3 → M2 → M1 performed?
With CONSULT-II
Read the gear position. Refer to AT- 9 5 , "
DATA MONITOR MODE" .
Is downshifting correctly performed?
YES >> GO TO 3.
NO >> Enter a check mark at “Vehicle Does Not Shift” at the corresponding position (5th → 4th, 4th →
3rd, 3rd → 2nd, 2nd → 1st) on the AT- 4 8 , "
DIAGNOSTIC WORKSHEET" , then continue the road
test.

AT-62
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES >> 1. Stop the vehicle. 2. Perform self-diagnostics. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 2 ,
"Diagnostic Procedure without CONSULT-II" .
NO >> Enter a check mark at AT- 2 2 7 , "
Vehicle Does Not Decelerate by Engine Brake" on the AT- 4 8 ,
"DIAGNOSTIC WORKSHEET" , then continue trouble diagnosis.
Vehicle Speed at Which Gear Shifting OccursNCS001BN
2WD MODELS

At half throttle, the accelerator opening is 4/8 of the full opening.
AW D M OD E LS

At half throttle, the accelerator opening is 4/8 of the full opening.

At half throttle, the accelerator opening is 4/8 of the full opening.
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 68 - 72
(42 - 45) 106 - 114
(66 - 71) 164 - 174
(102 - 108) 235 - 245
(146 - 152) 231 - 241
(144 - 150) 154 - 164
(96 - 102) 89 - 97
(55 - 60) 38 - 42
(23 - 27)
Half throttle 54 - 58
(34 - 36) 83 - 91
(52 - 57) 126 - 136
(78 - 85) 158 - 168
(98 - 104) 103 - 113
(64 - 70) 74 - 84
(46 - 52) 34 - 42
(21 - 26) 11 - 1 5
(7 - 9)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 62 - 66
(39 - 41) 96 - 104
(60 - 65) 149 - 159
(93 - 99) 213 - 223
(132 - 139) 209 - 219
(130 - 136) 121 - 131
(75 - 81) 81 - 89
(50 - 55) 39 - 43
(24 - 27)
Half throttle 49 - 53
(30 - 33) 75 - 83
(47 - 52) 114 - 124
(71 - 77) 141 - 151
(88 - 94) 94 - 104
(58 - 65) 66 - 76
(41 - 47) 31 - 39
(19 - 24) 11 - 1 5
(7 - 9)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 59 - 63
(37 - 39) 95 - 103
(59 - 64) 147 - 157
(92 - 98) 219 - 229
(137 - 143) 215 - 225
(134 - 141) 130 - 140
(81 - 88) 82 - 90
(51 - 56) 35 - 39
(22 - 24)
Half throttle 48 - 52
(30 - 33) 77 - 85
(48 - 53) 121 - 131
(76 - 82) 153 - 163
(96 - 102) 121 - 131
(76 - 82) 67 - 77
(42 - 48) 39 - 47
(24 - 29) 9 - 13
(6 - 8)

AT-64
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
Symptom ChartNCS001BP

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

Overhaul and check inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 3 , "A/T Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic Item Reference
page
1 Shift
Shock Large shock. (“N”
→
“D” position)
Refer to AT-193,
"Large Shock (“N” to
“D” Position)" . ON vehicle 1. Engine idle speed
EC-82
(for
VQ35DE)
or EC-742

(for
VK45DE)
2. Engine speed signal AT- 1 2 3
3. Accelerator pedal position sensorAT- 1 3 1
4. Control linkage adjustmentAT- 2 3 1
5. A/T fluid temperature sensorAT- 1 3 4
6. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 1,
AT- 1 5 0
7. CAN communication line AT- 1 0 4
8. A/T fluid level and state AT- 5 3
9. Line pressure testAT- 5 4
10. Control valve with TCMAT- 2 3 9
OFF vehicle 11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18, "Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
2
Shock is too large
when changing D1 →
D
2 or M1 → M2 . ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 1
2. Control linkage adjustmentAT- 2 3 1
3. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 5,
AT- 1 5 4
4. CAN communication line AT- 1 0 4
5. Engine speed signalAT- 1 2 3
6. Turbine revolution sensor AT- 11 6
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
8. A/T fluid level and state AT- 5 3
9. Control valve with TCMAT- 2 3 9
OFF vehicle 10. Direct clutch AT- 3 3 2

AT-90
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
CONSULT-II Function (A/T)NCS001BR
CONSULT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
CONSULT-II REFERENCE VALUE
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II 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-II 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-II indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed upon completion of shifting (which is computed by TCM).
Diagnostic test mode Function Reference page
Self-diagnostic results Self-diagnostic results can be read and erased quickly. AT- 9 2
Data monitor Input/Output data in the ECU can be read.AT- 9 5
CAN diagnostic support
monitor The results of transmit/receive diagnosis of CAN communication can be read.
AT- 9 9
Function test Performed by CONSULT-II 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. AT- 9 9
ECU part number TCM part number can be read. —
Item name Condition Display value
(Approx.)
VHCL/S SE-A/T During driving Approximately
matches the speed-
ometer reading.
VHCL/S SE-MTR
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
CLSD THL POS Released accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POS Fully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SW Depressed brake pedal. ON
Released brake pedal. OFF
ENGINE SPEED Engine running Closely matches the
tachometer reading.
TURBINE REV During driving (lock-up ON) Approximately
matches the engine
speed.
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 2 3.3 - 2.5 - 0.7 V
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A

AT-92
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAGNOSTIC RESULT MODE
After performing AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" , place check marks for results on the AT- 4 8 ,
"DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items.
Operation Procedure
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
Display shows malfunction experienced since the last erasing opera-
tion.
Display Items List
X: Applicable, —: Not applicable
BCIA0031E
Items (CONSULT-II
screen terms) Malfunction is detected when... TCM self-
diagnosis OBD-II
(DTC)
Reference page
“A/T” with
CONSULT-
II MIL indica-
tor lamp(*1) ,
“ENGINE”
with CON-
SULT-II or GST
CAN COMM CIR-
CUIT

When a malfunction is detected in CAN communications U1000 U1000 AT-104
STARTER RELAY/
CIRC

If this signal is ON other than in “P” or “N” position, this is judged
to be a malfunction.
(And if it is OFF in “P” or “N” position, this too is judged to be a
malfunction.) P0615 —
AT-107
TCM
TCM is malfunctioning P0700 P0700 AT- 111
PNP SW/CIRC

PNP switch 1-4 signals input with impossible pattern

“P” position is detected from “N” position without any other posi-
tion being detected in between. P0705 P0705
AT- 11 2
TURBINE REV S/
CIRC
TCM does not receive the proper voltage signal from the sensor.

TCM detects an irregularity only at position of 4th gear for turbine
revolution sensor 2. P0717 P0717
AT- 11 6
VEH SPD SEN/CIR
AT

Signal from vehicle speed sensor A/T (Revolution sensor) not
input due to cut line or the like

Unexpected signal input during running

After ignition switch is turned ON, unexpected signal input from
vehicle speed sensor MTR before the vehicle starts moving P0720 P0720
AT- 11 8
ENGINE SPEED
SIG
TCM does not receive the CAN communication signal from the
ECM. P0725 —
AT-123
TCC SOLENOID/
CIRC
Normal voltage not applied to solenoid due to cut line, short, or
the like P0740 P0740
AT-125
A/T TCC S/V
FNCTN
A/T cannot perform lock-up even if electrical circuit is good.

TCM detects as irregular by comparing difference value with slip
rotation. P0744
P0744(*2)AT-127