2006 INFINITI M35 stall

AT-48
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
WHAT..... Vehicle and A/T model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Diagnostic Worksheet Chart
Customer name MR/MS Model and Year VIN
Trans. Model Engine Mileage
Malfunction Date Manuf. Date In Service Date
Frequency
Continuous Intermittent ( times a day)
Symptoms
Vehicle does not move. ( Any position Particular position)
No up-shift ( 1st 2nd 2nd 3rd 3rd 4th 4th 5th)
No down-shift ( 5th 4th 4th 3rd 3rd 2nd 2nd 1st)
Lock-up malfunction
Shift point too high or too low.
Shift shock or slip ( N D N R Lock-up Any drive position)
Noise or vibration
No kick down
No pattern select
Others
()
A/T CHECK indicator lamp
Continuously lit Not lit
Malfunction indicator lamp (MIL)
Continuously lit Not lit
1 Read the item on cautions concerning fail-safe and understand the customer's complaint.AT- 4 4
2
A/T fluid inspectionAT- 5 3
Leak (Repair leak location.)
State
Amount
3
Stall test and line pressure testAT- 5 3, AT-
55 Stall test
Torque converter one-way clutch
Front brake
High and low reverse clutch
Low coast brake
Forward brake
Reverse brake
Forward one-way clutch
1st one-way clutch
3rd one-way clutch
Engine
Line pressure low
Except for input clutch and direct
clutch, clutches and brakes OK
Line pressure inspection - Suspected part:

TROUBLE DIAGNOSIS
AT-53
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Revision: 2006 January2006 M35/M45
Inspections before Trouble DiagnosisNCS001K7
A/T FLUID CHECK
A/T Fluid Leakage and A/T Fluid Level Check
Inspect 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 176F). Inspect the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Engine start, apply foot brake, and place selector lever in “D”
position.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state)Clutch, brake
scorchedReplace 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 fluidReplace the ATF and check for
places where water is getting in.
Large amount of metal
powder mixed inUnusual wear of
sliding parts within
A/TReplace the ATF and check for
improper operation of the A/T.
SAT638A
SAT647B
SCIA7463E
SCIA6787E

AT-54
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
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.
8. Cool down the ATF.
CAUTION:
Run the engine at idle for at least 1 minute.
9. Repeat steps 5 through 8 with selector lever in “R” position.
Judgement of Stall Test
O: Stall speed within standard value position
H: Stall speed higher than standard value
L: Stall speed lower than standard value
Stall test standard value positionStall speed
VQ35DE models: 2,650 - 2,950 rpm
VK45DE models: 2,260 - 2,560 rpm
SAT514G
SCIA6788E
Selector lever position
Possible location of malfunction
“D”, “M” “R”
Stall speed HO
Forward brake
Forward one-way clutch
1st one-way clutch
3rd one-way clutch
OH
Reverse brake
LL
Engine and torque converter one-way clutch
HH
Line pressure low
Does not shift-up “D” or “M” position 1 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D” or “M” position 2
3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D” or “M” position 3
4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D” or “M” position 4
5 Slipping in 5th gear Front brake slippage

TROUBLE DIAGNOSIS
AT-55
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Revision: 2006 January2006 M35/M45
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the ATF reaches in range of 50 to 80
C (122 to
176
F), then inspect the amount of ATF and replenish if necessary.
NOTE:
The A/T fluid temperature rises in range of 50 to 80
C (122 to 176F) during 10 minutes of driving.
3. Remove the front propeller shaft from vehicle (with AWD models). Refer to PR-5, "
Removal and Installa-
tion" .
4. After warming up remove the oil pressure detection plug and
install the oil pressure gauge [ST2505S001(J-34301-C)].
CAUTION:
When using the oil pressure gauge, be sure to use the O-
ring attached to the oil pressure detection plug.
5. Securely engage the parking brake so that the tires do not turn.
6. Start the engine, then measure the line pressure at both idle and
the stall speed.
CAUTION:
Keep the brake pedal pressed all the way down during
measurement.
When measuring the line pressure at the stall speed,
refer to AT- 5 3 , "
STALL TEST" .
7. After the measurements are complete, install the oil pressure
detection plug and tighten to the specified torque.
SCIA2187E
SCIA5309E
SCIA7463E
: 7.3 Nꞏm (0.74 kg-m, 65 in-lb)SAT493G

AT-56
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
CAUTION:
Do not reuse O-ring.
Apply ATF to O-ring.
Line Pressure
Judgement of Line Pressure Test
Engine speedLine pressure [kPa (kg/cm
2 , psi)]
“R” position “D”, “M” positions
At idle speed 425 - 465 (4.3 - 4.7, 62 - 67) 379 - 428 (3.9 - 4.4, 55 - 62)
At stall speed 1,605 - 1,950 (16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.4 - 15.3, 190 - 218)
Judgement 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 out-
put.
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 speedOil pressure does not
rise higher than the oil
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 stan-
dard 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.

AT-88
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
68
OthersEngine does not start
in “N” or “P” position.
Refer to AT-190, "Engine Cannot Be
Started in “P” or “N”
Position" .ON vehicle1. Push-button ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT- 2 2 7
3. PNP switchAT- 11 3
69Engine starts in posi-
tions other than “N” or
“P”.ON vehicle1. Push-button ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT- 2 2 7
3. PNP switchAT- 11 3
70 Engine stall.ON vehicle1. A/T fluid level and stateAT- 5 3
2. Engine speed signalAT- 1 2 4
3. Turbine revolution sensorAT- 11 7
4. Torque converter clutch solenoid valveAT- 1 2 6
5. CAN communication lineAT- 1 0 5
6. Control valve with TCMAT- 2 3 6
OFF vehicle 7. Torque converterAT- 2 9 8
71Engine stalls when
selector lever shifted
“N”
“D”or “R”.ON vehicle1. A/T fluid level and stateAT- 5 3
2. Engine speed signalAT- 1 2 4
3. Turbine revolution sensorAT- 11 7
4. Torque converter clutch solenoid valveAT- 1 2 6
5. CAN communication lineAT- 1 0 5
6. Control valve with TCMAT- 2 3 6
OFF vehicle 7. Torque converterAT- 2 9 8
72Engine speed does
not return to idle.
Refer to AT-212,
"Engine Speed Does
Not Return to Idle" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. ATF pressure switch 5 and direct clutch solenoid valveAT- 1 7 6,
AT- 1 5 5

3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 2
,
AT- 1 5 1
4. Accelerator pedal position sensorAT- 1 3 2
5. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT- 1 4 0
6. CAN communication lineAT- 1 0 5
7. Control valve with TCMAT- 2 3 6
OFF vehicle8. Front brake (brake band)AT- 2 9 89. Direct clutchAT- 3 3 7
No. Item Symptom Condition Diagnostic ItemReference
page

AT-110
DTC P0615 START SIGNAL CIRCUIT
Revision: 2006 January2006 M35/M45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureNCS001KV
1. CHECK STARTER RELAY
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II and check monitor “STARTER
RELAY” ON/OFF.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between the IPDM E/R connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK HARNESS BETWEEN A/T ASSEMBLY HARNESS CONNECTOR AND IPDM E/R CONNEC-
TOR
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector and IPDM E/R connector.
3. Check continuity between A/T assembly harness connector and
IPDM E/R connector.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
Terminal Item Condition Data (Approx.)
9 Starter relaySelector lever in “N”, “P” positions. Battery voltage
Selector lever in “R”, “D” positions. 0V
Item name Condition Display value
STARTER RELAYSelector lever in “N”, “P” positions. ON
Selector lever in “R”, “D” positions. OFF
Item Connector Terminal Shift position Voltage (Approx.)
Starter
relayE9 53 Ground“N”, “P” Battery voltage
“R”, “D” 0V
PCIA0056E
SCIA2103E
Item Connector Terminal Continuity
A/T assembly harness con-
nectorF42 9
Ye s
IPDM E/R connector E9 53
SCIA5439E

DTC P0615 START SIGNAL CIRCUIT
AT-111
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Revision: 2006 January2006 M35/M45
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT-236, "
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-
minal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. DETECT MALFUNCTIONING ITEM
Check the following.
Starter relay, Refer to SC-10, "STARTING SYSTEM" .
IPDM E/R, Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)" .
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 3 6 , "Control Valve With TCM and A/T Fluid
Temperature Sensor 2" .
NG >> Repair or replace damaged parts.
5. CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to AT- 1 0 8 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item Connector Terminal Continuity
A/T assembly harness con-
nectorF42 9
Ye s
TCM connector F502 8
SCIA5440E