Nissan 240SX — Automatic Transmission (Section AT) (2000 year). Manual — part 3
SAT970J
2.
Touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODE
NMAT0184S02
Detected items
(Screen terms for CONSULT-II, “SELF-DIAG
RESULTS” test mode)
Malfunction is detected when ...
Remarks
Item
Display
No failure
(NO DTC IS DETECTED FURTHER TESTING
MAY BE REQUIRED**)
I
No failure has been detected.
Initial start
I
This is not a malfunction message (Whenever shut-
ting off a power supply to the TCM, this message
appears on the screen.)
INITIAL START
*INITIAL START*
Revolution sensor
VHCL SPEED
SEN·A/T
I
TCM does not receive the proper voltage signal from
the sensor.
Vehicle speed sensor
(Meter)
VHCL SPEED
SEN·MTR
I
TCM does not receive the proper voltage signal from
the sensor.
Throttle position sen-
sor
Throttle position switch
THROTTLE POSI
SEN
I
TCM receives an excessively low or high voltage
from the sensor.
Shift solenoid valve A
SHIFT SOLENOID/V A
I
TCM detects an improper voltage drop when it tries
to operate the solenoid valve.
Shift solenoid valve B
SHIFT SOLENOID/V B
I
TCM detects an improper voltage drop when it tries
to operate the solenoid valve.
Overrun clutch sole-
noid valve
OVERRUN CLUTCH
S/V
I
TCM detects an improper voltage drop when it tries
to operate the solenoid valve.
T/C clutch solenoid
valve
T/C CLUTCH SOL/V
I
TCM detects an improper voltage drop when it tries
to operate the solenoid valve.
A/T fluid temperature
sensor
BATT/FLUID TEMP
SEN
I
TCM receives an excessively low or high voltage
from the sensor.
To be displayed in
case of abnormality
and when no recording
is made.
Engine speed signal
ENGINE SPEED SIG
I
TCM does not receive the proper voltage signal from
the ECM.
Line pressure solenoid
valve
LINE PRESSURE S/V
I
TCM detects an improper voltage drop when it tries
to operate the solenoid valve.
TCM (RAM)
CONTROL UNIT
(RAM)
I
TCM memory (RAM) is malfunctioning.
TCM (ROM)
CONTROL UNIT
(ROM)
I
TCM memory (ROM) is malfunctioning.
TCM (EEPROM)
CONT UNIT (EEP
ROM)
I
TCM memory (EEPROM) is malfunctioning.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-33
DATA MONITOR MODE (A/T)
NMAT0184S03
Item
Display
Monitor item
Description
Remarks
TCM input
signals
Main sig-
nals
Vehicle speed sensor 1
(A/T)
(Revolution sensor)
VHCL/S SE·A/T
[km/h] or [mph]
X
—
I
Vehicle speed computed
from signal of revolution
sensor is displayed.
When racing engine in “N”
or “P” position with vehicle
stationary, CONSULT-II
data may not indicate 0
km/h (0 mph).
Vehicle speed sensor 2
(Meter)
VHCL/S
SE·MTR
[km/h] or [mph]
X
—
I
Vehicle speed computed
from signal of vehicle
speed sensor is dis-
played.
Vehicle speed display may
not be accurate under
approx. 10 km/h (6 mph).
It may not indicate 0 km/h
(0 mph) when vehicle is
stationary.
Throttle position sensor
THRTL POS
SEN
[V]
X
—
I
Throttle position sensor
signal voltage is dis-
played.
A/T fluid temperature sensor FLUID TEMP
SE
[V]
X
—
I
A/T fluid temperature
sensor signal voltage is
displayed.
I
Signal voltage lowers as
fluid temperature rises.
Battery voltage
BATTERY VOLT
[V]
X
—
I
Source voltage of TCM is
displayed.
Engine speed
ENGINE
SPEED
[rpm]
X
X
I
Engine speed, computed
from engine speed signal,
is displayed.
Engine speed display may
not be accurate under
approx. 800 rpm. It may
not indicate 0 rpm even
when engine is not run-
ning.
Turbine revolution sensor
TURBINE REV
[rpm]
X
—
Turbine revolution computed
from signal of turbine revo-
lution sensor is displayed.
I
This is displayed even
when no turbine revolu-
tion sensor is equipped.
Overdrive control switch
OVERDRIVE
SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of overdrive
control SW is displayed.
PN position switch
PN POSI SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of PN position
SW is displayed.
R position switch
R POSITION
SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of R position
SW is displayed.
D position switch
D POSITION
SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of D position
SW is displayed.
2 position switch
2 POSITION
SW
[ON/OFF]
X
—
I
ON/OFF status, com-
puted from signal of 2
position SW, is displayed.
1 position switch
1 POSITION
SW
[ON/OFF]
X
—
I
ON/OFF status, com-
puted from signal of 1
position SW, is displayed.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-34
Item
Display
Monitor item
Description
Remarks
TCM input
signals
Main sig-
nals
ASCD cruise signal
ASCD-CRUISE
[ON/OFF]
X
—
I
Status of ASCD cruise
signal is displayed.
ON ... Cruising state
OFF ... Normal running
state
I
This is displayed even
when no ASCD is
mounted.
ASCD OD cut signal
ASCD-OD CUT
[ON/OFF]
X
—
I
Status of ASCD OD
release signal is dis-
played.
ON ... OD released
OFF ... OD not released
I
This is displayed even
when no ASCD is
mounted.
Kickdown switch
KICKDOWN SW
[ON/OFF]
X
—
I
ON/OFF status, com-
puted from signal of kick-
down SW, is displayed.
I
This is displayed even
when no kickdown
switch is equipped.
A/T mode switch
[POWER]
POWER SHIFT
SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of POWER
mode SW is displayed.
Closed throttle position
switch
CLOSED
THL/SW
[ON/OFF]
X
—
I
ON/OFF status, com-
puted from signal of
closed throttle position
SW, is displayed.
Wide open throttle position
switch
W/O THRL/
P-SW
[ON/OFF]
X
—
I
ON/OFF status, com-
puted from signal of wide
open throttle position SW,
is displayed.
A/T mode switch
[SNOW]
HOLD SW
[ON/OFF]
X
—
I
ON/OFF state computed
from signal of SNOW
mode SW is displayed.
Gear position
GEAR
—
X
I
Gear position data used
for computation by TCM,
is displayed.
Selector lever position
SLCT LVR POSI
—
X
I
Selector lever position
data, used for computa-
tion by TCM, is displayed.
I
A specific value used
for control is displayed
if fail-safe is activated
due to error.
Vehicle speed
VEHICLE
SPEED
[km/h] or [mph]
—
X
I
Vehicle speed data, used
for computation by TCM,
is displayed.
Throttle position
THROTTLE
POSI
[/8]
—
X
I
Throttle position data,
used for computation by
TCM, is displayed.
I
A specific value used
for control is displayed
if fail-safe is activated
due to error.
Line pressure duty
LINE PRES
DTY
[%]
—
X
I
Control value of line pres-
sure solenoid valve, com-
puted by TCM from each
input signal, is displayed.
Torque converter clutch
solenoid valve duty
TCC S/V DUTY
[%]
—
X
I
Control value of torque
converter clutch solenoid
valve, computed by TCM
from each input signal, is
displayed.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-35
Item
Display
Monitor item
Description
Remarks
TCM input
signals
Main sig-
nals
Shift solenoid valve A
SHIFT S/V A
[ON/OFF]
—
X
I
Control value of shift
solenoid valve A, com-
puted by TCM from each
input signal, is displayed.
Control value of solenoid
is displayed even if sole-
noid circuit is discon-
nected.
The “OFF” signal is dis-
played if solenoid circuit is
shorted.
Shift solenoid valve B
SHIFT S/V B
[ON/OFF]
—
X
I
Control value of shift
solenoid valve B, com-
puted by TCM from each
input signal, is displayed.
Overrun clutch solenoid
valve
OVERRUN/C
S/V
[ON/OFF]
—
X
I
Control value of overrun
clutch solenoid valve
computed by TCM from
each input signal is dis-
played.
Self-diagnosis display lamp
(POWER indicator lamp)
SELF-D DP
LMP
[ON/OFF]
—
X
I
Control status of POWER
indicator lamp is dis-
played.
X: Applicable
—: Not applicable
SAT014K
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(WITH CONSULT-II)
NMAT0184S07
1.
If the ignition switch stays “ON” after repair work, be sure to
turn ignition switch “OFF” once. Wait for at least 5 seconds and
then turn it “ON” again.
2.
Turn CONSULT-II “ON”, and touch “A/T”.
SAT407K
3.
Touch “SELF-DIAG RESULTS”.
SAT970J
4.
Touch “ERASE”. (The self-diagnostic results will be erased.)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-36
Diagnostic Procedure Without CONSULT-II
NMAT0206
SELF-DIAGNOSTIC PROCEDURE (WITHOUT
CONSULT-II)
NMAT0206S03
1
CHECK POWER INDICATOR LAMP
1. Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.
2. Turn ignition switch to “OFF” position.
3. Wait 5 seconds.
4. Set A/T mode switch to “AUTO” position.
5. Set overdrive control switch in “ON” position.
6. Turn ignition switch to “ON” position.
(Do not start engine.)
7. Does POWER indicator lamp come on for about 2 seconds?
SAT408K
Yes or No
Yes
©
GO TO 2.
No
©
Go to “1. POWER Indicator Lamp Does Not Come On”, AT-149.
2
JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to “OFF” position.
2. Turn ignition switch to “ACC” position.
3. Move selector lever from “P” to “D” position.
4. Turn ignition switch to “OFF” position.
5. Set overdrive control switch in “OFF” position.
6. Depress accelerator pedal fully and release it.
7. Turn ignition switch to “ON” position (Do not start engine.).
8. Wait 2 seconds.
9. Move selector lever to “2” position.
10. Set overdrive control switch in “ON” position.
©
GO TO 3.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II
AT-37
3
JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to “1” position.
2. Set overdrive control switch in “OFF” position.
3. Depress accelerator pedal fully and release it.
SAT981F
©
GO TO 4.
4
CHECK SELF-DIAGNOSIS CODE
Check POWER indicator lamp.
Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-38.
SAT408K
©
DIAGNOSIS END
JUDGEMENT OF SELF-DIAGNOSIS CODE
NMAT0206S04
POWER indicator lamp:
All judgement flickers are same.
SAT819H
All circuits that can be confirmed by self-diagnosis are OK.
1st judgement flicker is longer than others.
SAT794H
Revolution sensor circuit is short-circuited or disconnected.
⇒
Go to VEHICLE SPEED SENSOR·A/T (REVOLUTION
SENSOR), AT-89.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-38
POWER indicator lamp:
2nd judgement flicker is longer than others.
SAT795H
Vehicle speed sensor circuit is short-circuited or disconnected.
⇒
Go to VEHICLE SPEED SENSOR·MTR, AT-95.
3rd judgement flicker is longer than others.
SAT796H
Throttle position sensor circuit is short-circuited or disconnected.
⇒
Go to THROTTLE POSITION SENSOR, AT-98.
4th judgement flicker is longer than others.
SAT797H
Shift solenoid valve A circuit is short-circuited or disconnected.
⇒
Go to SHIFT SOLENOID VALVE A, AT-106.
5th judgement flicker is longer than others.
SAT798H
Shift solenoid valve B circuit is short-circuited or disconnected.
⇒
Go to SHIFT SOLENOID VALVE B, AT-111.
6th judgement flicker is longer than others.
SAT799H
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to OVERRUN CLUTCH SOLENOID VALVE, AT-116.
7th judgement flicker is longer than others.
SAT800H
Torque converter clutch solenoid valve circuit is short-circuited
or disconnected.
⇒
Go to TORQUE CONVERTER CLUTCH SOLENOID
VALVE, AT-120.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-39
POWER indicator lamp:
8th judgement flicker is longer than others.
SAT801H
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
⇒
Go to A/T FLUID TEMPERATURE SENSOR AND TCM
POWER SOURCE, AT-125.
9th judgement flicker is longer than others.
SAT802H
Engine speed signal circuit is short-circuited or disconnected.
⇒
Go to ENGINE SPEED SIGNAL, AT-132.
10th judgement flicker is longer than others.
SAT803H
Line pressure solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to LINE PRESSURE SOLENOID VALVE, AT-136.
Flickers as shown below.
SAT804H
Battery power is low.
Battery has been disconnected for a long time.
Battery is connected conversely.
(When reconnecting TCM connectors. — This is not a problem.)
Lamp comes off.
SAT809J
PNP switch, overdrive control switch, A/T mode switch or
throttle position switch circuit is disconnected or TCM is dam-
aged.
⇒
Go to 22. TCM Self-diagnosis Does Not Activate (PNP,
OVERDRIVE CONTROL, A/T MODE AND THROTTLE POSI-
TION SWITCHES), AT-189.
t
1
= 2.5 seconds
t
2
= 2.0 seconds
t
3
= 1.0 second
t
4
= 1.0 second
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-40
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(WITHOUT CONSULT-II)
NMAT0206S05
1.
If the ignition switch stays “ON” after repair work, be sure to
turn ignition switch “OFF” once. Wait for at least 5 seconds and
then turn it “ON” again.
2.
Perform “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)’’. Refer to AT-37.
3.
Turn ignition switch “OFF”. (The self-diagnostic results will be
erased.)
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-41
SAT631IB
Introduction
NMAT0019
SAT632I
SEF234G
The TCM receives a signal from the vehicle-speed sensor, throttle
(accelerator) position sensor or inhibitor switch and provides shift
control or lock-up control via solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good
operating condition and be free of valve seizure, solenoid valve
malfunction, etc.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this
case, careful checking of suspected circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the problems. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the “Work Flow”. Refer to AT-46.
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 problems, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A “Diagnostic Worksheet” like the
example (AT-44) should be used.
Start your diagnosis by looking for “conventional” problems first.
This will help troubleshoot driveability problems on an electronically
controlled engine vehicle.
Also check related Service bulletins.
TROUBLE DIAGNOSIS — INTRODUCTION
Introduction
AT-42
DIAGNOSTIC WORKSHEET
=NMAT0019S01
Information From Customer
NMAT0019S0101
KEY POINTS
WHAT . . Vehicle & A/T model
WHEN. . Date, Frequencies
WHERE. . Road conditions
HOW. . Operating conditions, Symptoms
Customer name
MR/MS
Model & Year
VIN
Trans. model
Engine
Mileage
Incident Date
Manuf. Date
In Service Date
Frequency
l
Continuous
l
Intermittent (
times a day)
Symptoms
l
Vehicle does not move.
(
l
Any position
l
Particular position)
l
No up-shift
(
l
1st
,
2nd
l
2nd
,
3rd
l
3rd
,
O/D)
l
No down-shift
(
l
O/D
,
3rd
l
3rd
,
2nd
l
2nd
,
1st)
l
Lockup malfunction
l
Shift point too high or too low.
l
Shift shock or slip
(
l
N
,
D
l
Lockup
l
Any drive position)
l
Noise or vibration
l
No kickdown
l
No pattern select
l
Others
(
)
POWER indicator lamp
Blinks for about 8 seconds.
l
Continuously lit
l
Not lit
Malfunction indicator lamp (MIL)
l
Continuously lit
l
Not lit
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TROUBLE DIAGNOSIS — INTRODUCTION
Introduction (Cont’d)
AT-43
Diagnostic Worksheet
=NMAT0019S0102
1.
l
Read the Fail-safe and listen to customer complaints.
2.
l
A/T FLUID CHECK
l
Leakage (Follow specified procedure)
l
Fluid condition
l
Fluid level
3.
l
Perform STALL TEST and LINE PRESSURE TEST.
l
Stall test — Mark possible damaged components/others.
l
Torque converter one-way clutch
l
Reverse clutch
l
Forward clutch
l
Overrun clutch
l
Forward one-way clutch
l
Low & reverse brake
l
Low one-way clutch
l
Engine
l
Line pressure is low
l
Clutches and brakes except high clutch and
brake band are OK
l
Line pressure test — Suspected parts:
4.
l
Perform all ROAD TEST and mark required procedures.
4-1.
Check before engine is started.
l
SELF-DIAGNOSTIC PROCEDURE — Mark detected items.
l
Vehicle speed sensor·A/T (Revolution sensor), AT-89.
l
Vehicle speed sensor·MTR, AT-95.
l
Throttle position sensor, AT-98.
l
Shift solenoid valve A, AT-106.
l
Shift solenoid valve B, AT-111.
l
Overrun clutch solenoid valve, AT-116.
l
Torque converter clutch solenoid valve, AT-120.
l
A/T fluid temperature sensor and TCM power source, AT-125.
l
Engine speed signal, AT-132.
l
Line pressure solenoid valve, AT-136.
l
Control unit (RAM), control unit (ROM), AT-142.
l
Control unit (EEPROM), AT-144.
l
PNP, overdrive control, A/T mode and throttle position switches, AT-189.
l
Battery
l
Others
4-2.
Check at idle
l
1. POWER Indicator Lamp Does Not Come On, AT-149.
l
2. POWER or SNOW Indicator Lamp Does Not Come On, AT-150.
l
3. O/D OFF Indicator Lamp Does Not Come On, AT-151.
l
4. POWER Indicator Lamp Does Not Come On, AT-152.
l
5. Engine Cannot Be Started In “P” And “N” Position, AT-153.
l
6. In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-154.
l
7. In “N” Position, Vehicle Moves, AT-155.
l
8. Large Shock. “N”
,
“R” Position, AT-157.
l
9. Vehicle Does Not Creep Backward In “R” Position, AT-159.
l
10. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT-162.
TROUBLE DIAGNOSIS — INTRODUCTION
Introduction (Cont’d)
AT-44
4.
4-3.
Cruise test
Part-1
l
11. Vehicle Cannot Be Started From D
1
, AT-165.
l
12. A/T Does Not Shift: D
1
,
D
2
Or Does Not Kickdown: D
4
,
D
2
, AT-168.
l
13. A/T Does Not Shift: D
2
,
D
3
, AT-171.
l
14. A/T Does Not Shift: D
3
,
D
4
, AT-174.
l
15. A/T Does Not Perform Lock-up, AT-177.
l
16. A/T Does Not Hold Lock-up Condition, AT-179.
l
17. Lock-up Is Not Released, AT-181.
l
18. Engine Speed Does Not Return To Idle (Light Braking D
4
,
D
3
), AT-182.
Part-2
l
19. Vehicle Does Not Start From D
1
, AT-184.
l
12. A/T Does Not Shift: D
1
,
D
2
Or Does Not Kickdown: D
4
,
D
2
, AT-168.
l
13. A/T Does Not Shift: D
2
,
D
3
, AT-171.
l
14. A/T Does Not Shift: D
3
,
D
4
, AT-174.
Part-3
l
20. A/T Does Not Shift: D
4
,
D
3
When Overdrive Control Switch “ON”
,
“OFF”, AT-185.
l
18. Engine Speed Does Not Return To Idle (Engine Brake In D
3
), AT-182.
l
21. A/T Does Not Shift: D
3
,
2
2
, When Selector Lever “D”
,
“2” Position, AT-186.
l
18. Engine Speed Does Not Return To Idle (Engine Brake In 2
2
), AT-182.
l
22. A/T Does Not Shift: 2
2
,
1
1
, When Selector Lever “2”
,
“1” Position, AT-187.
l
23. Vehicle Does Not Decelerate By Engine Brake, AT-188.
l
SELF-DIAGNOSTIC PROCEDURE — Mark detected items.
l
Vehicle speed sensor·A/T (Revolution sensor), AT-89.
l
Vehicle speed sensor·MTR, AT-95.
l
Throttle (accelerator) position sensor, AT-98.
l
Shift solenoid valve A, AT-106.
l
Shift solenoid valve B, AT-111.
l
Overrun clutch solenoid valve, AT-116.
l
Torque converter clutch solenoid valve, AT-120.
l
A/T fluid temperature sensor and TCM power source, AT-125.
l
Engine speed signal, AT-132.
l
Line pressure solenoid valve, AT-136.
l
Control unit (RAM), control unit (ROM), AT-142.
l
Control unit (EEPROM), AT-144.
l
PNP, overdrive control, A/T mode and throttle position switches, AT-189.
l
Battery
l
Others
5.
l
For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.
6.
l
Perform all ROAD TEST and re-mark required procedures.
7.
l
Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged
parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible
symptoms and the component inspection orders.)
8.
l
Erase self-diagnosis code from TCM memories.
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IDX
TROUBLE DIAGNOSIS — INTRODUCTION
Introduction (Cont’d)
AT-45
Work Flow
=NMAT0020
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
NMAT0020S01
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a problem. It is important to fully understand the symptoms
or conditions for a customer complaint.
Make good use of the two sheets provided, “INFORMATION FROM CUSTOMER” (AT-43) and “DIAGNOS-
TIC WORKSHEET” (AT-44), to perform the best troubleshooting possible.
TROUBLE DIAGNOSIS — INTRODUCTION
Work Flow
AT-46
WORK FLOW CHART
=NMAT0020S02
SAT731J
*1: AT-43
*2: AT-44
*3: AT-5
*4: AT-48
*5: AT-48
*6: AT-51
*7: AT-52
*8: AT-32
*9: AT-32
*10: AT-41
*11: AT-90
*12: AT-144
*13: AT-146
*14: AT-189
*15: AT-70
*16: AT-36
*17: AT-41
*18: AT-90
*19: AT-144
GI
MA
EM
LC
EC
FE
CL
MT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — INTRODUCTION
Work Flow (Cont’d)
AT-47
A/T Fluid Check
NMAT0021
FLUID LEAKAGE CHECK
NMAT0021S01
1.
Clean area suspected of leaking. — for example, mating sur-
face of converter housing and transmission case.
2.
Start engine, apply foot brake, place selector lever in “D” posi-
tion and wait a few minutes.
3.
Stop engine.
4.
Check for fresh leakage.
SAT638A
FLUID CONDITION CHECK
NMAT0021S02
Fluid color
Suspected problem
Dark or black with burned odor
Wear of frictional material
Milky pink
Water contamination — Road water
entering through filler tube or breather
Varnished fluid, light to dark brown
and tacky
Oxidation — Over or under filling, —
Overheating
FLUID LEVEL CHECK
NMAT0021S03
Refer to “Checking A/T Fluid”, AT-9.
SAT647B
Stall Test
NMAT0022
STALL TEST PROCEDURE
NMAT0022S01
1.
Check A/T fluid and engine oil levels. If necessary, add fluid
and oil.
2.
Drive vehicle for approx. 10 minutes or until fluid and oil reach
operating temperature.
ATF operating temperature:
50 - 80°C (122 - 176°F)
SAT513G
3.
Set parking brake and block wheels.
4.
Install a tachometer where it can be seen by driver during test.
I
It is good practice to put a mark on point of specified
engine rpm on indicator.
TROUBLE DIAGNOSIS — BASIC INSPECTION
A/T Fluid Check
AT-48
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