no start INFINITI FX35 2008 Owner's Manual

A/T CONTROL SYSTEMAT-31
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Input/Output Signal of TCMINFOID:0000000001327137
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kin d of error.
*5: Input by CAN communications
*6: Output by CAN communications
Line Pressure ControlINFOID:0000000001327138
 When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the TCM
controls the line pressure solenoid.
Control item Line
pressure control Vehicle
speed
control Shift
control Lock-up
control Engine
brake
control Fail-safe
function (*3) Self-diag-
nostics
function
Input Accelerator pedal position signal
(*5)XXXXXXX
Vehicle speed sensor A/T
(revolution sensor) XXXXXXX
Vehicle speed sensor MTR
(*1) (*5)X
Closed throttle position signal
(*5)X (*2) X X X X (*4)
Wide open throttle position signal
(*5)XX (*4)
Turbine revolution sensor 1 X X X X X
Turbine revolution sensor 2
(for 4th speed only) XXXXX
Engine speed signals
(*5)XXXXXXX
Stop lamp switch signal
(*5)XXX X (*4)
A/T fluid temperature sensors 1, 2 X X X X X X
ASCD or
ICC Operation signal
(*5)XXX
Overdrive cancel sig-
nal
(*5)X
Out-
put Direct clutch solenoid X X X X
Input clutch solenoid X X X X
High and low reverse clutch sole-
noid
XX XX
Front brake solenoid X X X X
Low coast brake solenoid (ATF
pressure switch 2) XX XXX
Line pressure solenoid X X X X X X X
TCC solenoid X X X
Self-diagnostics table
(*6)X
Starter relay XX
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AT-40
< SERVICE INFORMATION >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Malfunction Indicator Lamp (MIL)
INFOID:0000000001327147
DESCRIPTION
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON with- out the engine running. This is a bulb check.
 If the MIL does not light up, refer to DI-34
, or see EC-591 (for
VQ35DE) or EC-1194
(for VK45DE).
2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
SEF217U
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TROUBLE DIAGNOSISAT-41
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TROUBLE DIAGNOSIS
DTC Inspection Priority ChartINFOID:0000000001327148
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
NOTE:
If “DTC U1000” is displayed with other DTCs, fi rst perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 9 4
.
Fail-SafeINFOID:0000000001327149
The TCM has an electrical fail-safe mode. This mode make s it possible to operate even if there is an error in a
main electronic control input/output signal circuit.
In fail-safe mode, even if the selector lever is “D” or “M” mode, the transmission is fixed in 2nd, 4th or 5th
(depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under s pecial conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the ti re rotation), the transmission can go into fail-safe
mode. If this happens, switch OFF the ignition switch for 10 seconds, then switch it ON again to return to the
normal shift pattern. Therefore, t he customer's vehicle has returned to normal, so handle according to the
“WORK FLOW” (Refer to AT- 4 2
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, th is function controls the A/T to mark driving possible.
Vehicle Speed Sensor
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the trans-
mission and from combination meter so normal driving is possible even if there is a malfunction in one of the
systems. And if vehicle speed sens or A/T (revolution sensor) has unus ual cases, 5th gear and manual mode
are prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving po ssible. And if there are malfunctions in tow systems,
the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving po ssible. And if there are malfunctions in tow systems,
the accelerator opening angle is controlled by the idle signal sent from the ECM which is based on input indi-
cating either idle condition or off-idle condition (pre- determined accelerator opening) in order to make driving
possible.
PNP Switch
In the unlikely event that a malfunction signal enters t he TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter starting is di sabled), the back-up lamp relay switched OFF (back-up lamp
is OFF) and the position is fixed to the “D” position to make driving possible.
Starter Relay
The starter relay is switched OFF. (Starter starting is disabled.)
A/T Interlock
 If there is an A/T interlock judgment malfunction, t he A/T is fixed in 2nd gear to make driving possible.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed,
but this is not a turbine r evolution sensor malfunction.
 When the coupling pattern below is detected, the fail- safe action corresponding to the pattern is performed.
A/T 1st Engine Braking
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above
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TROUBLE DIAGNOSISAT-43
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Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” as
shown on the example (Refer to "Diagnostic Worksheet Chart")
should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
WORK FLOW
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malf unction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Make good use of the two sheets provided, “Informati on from Customer” and “Diagnostic worksheet chart”, to
perform the best troubleshooting possible.
Work Flow Chart
SEF234G
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AT-46
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
4❏
Perform all road tests and enter checks in required inspection items. AT- 4 9
4-1.Check before engine is started
AT- 5 3
❏ The A/T CHECK Indicator Lamp does come on. AT- 1 7 0.
❏ Perform self-diagnostics. Enter checks for detected items. AT- 8 4
, AT- 9 1.
❏ DTC U1000 CAN COMMUNICATION LINE AT- 9 4
.
❏ DTC P0615 START SIGNAL CIRCUIT AT- 9 7
.
❏ DTC P0700 TCM AT- 1 0 1
❏ DTC P0705 PARK/NEUTRAL POSITION SWITCH AT- 1 0 2.
❏ DTC P0717 TURBINE REVOLUTION SENSOR AT- 1 0 6
.
❏ DTC P0720 VEHICLE SPEED SENSO R A/T (REVOLUTION SENSOR) AT- 1 0 8
.
❏ DTC P0725 ENGINE SPEED SIGNAL AT- 11 2
.
❏ DTC P0731 A/T 1ST GEAR FUNCTION AT- 11 4
.
❏ DTC P0732 A/T 2ND GEAR FUNCTION AT- 11 6
.
❏ DTC P0733 A/T 3RD GEAR FUNCTION AT- 11 8
.
❏ DTC P0734 A/T 4TH GEAR FUNCTION AT- 1 2 0
.
❏ DTC P0735 A/T 5TH GEAR FUNCTION AT- 1 2 2
.
❏ DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE AT- 1 2 4
.
❏ DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) AT- 1 2 6
.
❏ DTC P0745 LINE PRESSURE SOLONOID VALVE AT- 1 2 8
.
❏ DTC P1705 THROTTLE POSITION SENSOR AT- 1 3 0
.
❏ DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT AT- 1 3 2
.
❏ DTC P1721 VEHICLE SPEED SENSOR MTR AT- 1 3 7
.
❏ DTC P1730 A/T INTERLOCK AT- 1 3 9
.
❏ DTC P1731 A/T 1ST ENGINE BRAKING AT- 1 4 1
.
❏ DTC P1752 INPUT CLUTCH SOLENOID VALVE AT- 1 4 3
.
❏ DTC P1757 FRONT BRAKE SOLENOID VALVE AT- 1 4 5
.
❏ DTC P1762 DIRECT CLUTCH SOLENOID VALVE AT- 1 4 7
.
❏ DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE AT- 1 4 9
.
❏ DTC P1772 LOW COAST BRAKE SOLENOID VALVE AT- 1 5 1
.
❏ DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION AT- 1 5 3
.
❏ DTC P1815 MANUAL MODE SWITCH AT- 1 5 5
.
4-2. Check at Idle
AT- 5 3
❏ AT- 1 7 0 , "Engine Cannot Be Started in "P" or "N" Position".
❏ AT- 1 7 1 , "
In "P" Position, Vehicle Moves When Pushed"
❏ AT- 1 7 2 , "In "N" Position, Vehicle Moves".
❏ AT- 1 7 3 , "
Large Shock ("N" to "D" Position)".
❏ AT- 1 7 5 , "
Vehicle Does Not Creep Backward in "R" Position".
❏ AT- 1 7 8 , "
Vehicle Does Not Creep Forward in "D" Position".
4-3. Cruise Test
AT- 5 3
Part 1
❏ AT- 1 8 0 , "
Vehicle Cannot Be Started from D1".
❏ AT- 1 8 2 , "
A/T Does Not Shift: D1→ D2".
❏ AT- 1 8 4 , "
A/T Does Not Shift: D2→ D3".
❏ AT- 1 8 6 , "
A/T Does Not Shift: D3→ D4".
❏ AT- 1 8 8 , "
A/T Does Not Shift: D4→ D5".
❏ AT- 1 9 0 , "
A/T Does Not Lock-up"
❏ AT- 1 9 2 , "A/T Does Not Hold Lock-up Condition".
❏ AT- 1 9 4 , "
Lock-up Is Not Released".
❏ AT- 1 9 4 , "
Engine Speed Does Not Return to Idle".
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TROUBLE DIAGNOSISAT-47
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44-3. Part 2
AT- 5 3
❏ AT- 1 8 0 , "Vehicle Cannot Be Started from D1".
❏ AT- 1 8 2 , "
A/T Does Not Shift: D1→ D2".
❏ AT- 1 8 4 , "
A/T Does Not Shift: D2→ D3".
❏ AT- 1 8 6 , "
A/T Does Not Shift: D3→ D4".
Part 3 AT- 5 3
❏ AT- 1 9 5 , "Cannot Be Changed to Manual Mode".
❏ AT- 1 9 6 , "
A/T Does Not Shift: 5th Gear → 4th Gear".
❏ AT- 1 9 7 , "
A/T Does Not Shift: 4th Gear → 3rd Gear".
❏ AT- 1 9 9 , "
A/T Does Not Shift: 3rd Gear → 2nd Gear".
❏ AT- 2 0 1 , "
A/T Does Not Shift: 2nd Gear → 1st Gear".
❏ AT- 2 0 2 , "
Vehicle Does Not Decelerate by Engine Brake".
❏ Perform self-diagnostics. Enter checks for detected items. AT- 8 4
, AT- 9 1.
❏ DTC U1000 CAN CO MMUNICATION LINE AT- 9 4
.
❏ DTC P0615 START SIGNAL CIRCUIT AT- 9 7
.
❏ DTC P0700 TCM AT- 1 0 1
❏ DTC P0705 PARK/NEUTRAL POSITION SWITCH AT- 1 0 2.
❏ DTC P0717 TURBINE REVOLUTION SENSOR AT- 1 0 6
.
❏ DTC P0720 VEHICLE SPEED SENS OR A/T (REVOLUTION SENSOR) AT- 1 0 8
.
❏ DTC P0725 ENGINE SPEED SIGNAL AT- 11 2
.
❏ DTC P0731 A/T 1ST GEAR FUNCTION AT- 11 4
.
❏ DTC P0732 A/T 2ND GEAR FUNCTION AT- 11 6
.
❏ DTC P0733 A/T 3RD GEAR FUNCTION AT- 11 8
.
❏ DTC P0734 A/T 4TH GEAR FUNCTION AT- 1 2 0
.
❏ DTC P0735 A/T 5TH GEAR FUNCTION AT- 1 2 2
.
❏ DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE AT- 1 2 4
.
❏ DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) AT-126
.
❏ DTC P0745 LINE PRESSURE SOLONOID VALVE AT- 1 2 8
.
❏ DTC P1705 THROTTLE POSITION SENSOR AT- 1 3 0
.
❏ DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT AT- 1 3 2
.
❏ DTC P1721 VEHICLE SPEED SENSOR MTR AT- 1 3 7
.
❏ DTC P1730 A/T INTERLOCK AT- 1 3 9
.
❏ DTC P1731 A/T 1ST ENGINE BRAKING AT- 1 4 1
.
❏ DTC P1752 INPUT CLUTCH SOLENOID VALVE AT- 1 4 3
.
❏ DTC P1757 FRONT BRAKE SOLENOID VALVE AT- 1 4 5
.
❏ DTC P1762 DIRECT CLUTCH SOLENOID VALVE AT- 1 4 7
.
❏ DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE AT- 1 4 9
.
❏ DTC P1772 LOW COAST BRAKE SOLENOID VALVE AT- 1 5 1
.
❏ DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION AT- 1 5 3
.
❏ DTC P1815 MANUAL MODE SWITCH AT-155
.
5 ❏ Inspect each system for items found to be NG in the self-diagnostics and repair or replace the malfunctioning parts.
6 ❏ Perform all road tests and enter the checks again for the required items. AT- 4 9
7❏
For any remaining NG items, perform the “diagnostics procedure” and repair or replace the malfunctioning
parts. See the chart for diagnostics by symptoms. (This chart also contains other symptoms and inspection pro-
cedures.) AT- 5 9
8
❏ Erase the results of the self-diagnostics from the TCM and the ECM. AT- 8 4,
AT-
91
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AT-50
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
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.
8. Cool down the ATF. CAUTION:
Run the engine at idle for at least 1 minute.
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 plac-
es 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 im-
proper 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
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AT-52
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
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 andthe stall speed.
CAUTION:
 Keep the brake pedal pressed all the way down duringmeasurement.
 When measuring the line pressure at the stall speed, refer to "STALL TEST".
7. After the measurements are complete, install the oil pressure detection plug and tighten to the specified torque.
CAUTION:
 Do not reuse the O-ring.
 Apply ATF to the O-ring.
Line Pressure
Judgement of Line Pressure Test
SCIA7463E
:7.3 N·m (0.74 kg-m, 65 in-lb)SAT493G
Engine speed Line pressure kPa (kg/cm
2, psi)
“R” position “D” and “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 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
:

TROUBLE DIAGNOSISAT-53
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Road TestINFOID:0000000001425855
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.
2. Check at idle.
3. Cruise test
 Inspect all the items Part 1 to Part 3.
 Before beginning the road test, che ck the procedure and inspection items.
 Test all inspection items until the symptom is uncov ered. Diagnose NG items when all road tests are com-
plete.
CHECK BEFORE ENGINE IS STARTED
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>> With CONSULT-III
1. Perform self-diagnostics and record all NG items on the “Diagnostic Worksheet Chart”.
2. Go to “CHECK AT IDLE”.
YES - 2>> Without CONSULT-III
1. Perform self-diagnostics and record all NG it ems on the “Diagnostic Worksheet Chart”. Refer
to AT-91, "
Diagnosis Procedure without CONSULT-III".
2. Go to “CHECK AT IDLE”.
NO >> Stop the road test and go to AT-170, "
A/T Check Indicator Lamp Does Not Come On".
CHECK AT IDLE
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-170, "
Engine Cannot Be Started in "P" or "N" Position".
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 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.
Judgement Possible cause
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AT-54
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
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-170, "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-171, "In "P" Position, Vehicle Moves When Pushed" on the “Diagnostic
Worksheet Chart”, then continue the road test.
NO >> GO TO 4.
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-172, "In "N" Position, Vehicle Moves" on the “Diagnostic Worksheet
Chart”, 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-173, "Large Shock ("N" to "D" Position)"on the “Diagnostic Worksheet
Chart”, 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-175, "
Vehicle Does Not Creep Backward in "R" Position" on the “Diag-
nostic Worksheet Chart”, 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-53, "Road Test".
NO >> Enter a check mark at AT-178, "
Vehicle Does Not Creep Forward in "D" Position"on the “Diagnos-
tic Worksheet Chart”, then continue the road test.
CRUISE TEST - PART 1
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)
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