2002 ISUZU AXIOM engine coolant

7A±23 AUTOMATIC TRANSMISSION (4L30±E)
Stall Test
The stall test allows you to check the transmission for
internal abrasion and the one way clutch for slippage.
Torque converter performance can also be evaluated.
The stall test results together with the road test results will
identify transmission components requiring servicing or
adjustment.
Stall Test Procedure:
1. Check the level of the engine coolant, the engine oil,
and the automatic transmission fluid. Replenish if
necessary.
2. Block the wheels and set the parking brake.
3. Connect a tachometer to the engine.
4. Start the engine and allow it to idle until the engine
coolant temperature reaches 70 ± 80
C (158 ±
176
F).
5. Hold the brake pedal down as far as it will go.
6. Place the selector in the ªDº range.
7. Gradually push the accelerator pedal to the floor.
The throttle valve will be fully open.
Note the engine speed at which the tachometer
needle stabilizes.
Stall Speed : 2,100 +150 rpm
NOTE: Do not continuously run this test longer than 5
seconds.
8. Release the accelerator pedal.
9. Place the selector in the ªNº range.
10. Run the engine at 1,200 rpm for one minute.
This will cool the transmission fluid.
11. Repeat Steps 7 ± 10 for the ª3º, ª2º, ªLº and ªRº
ranges.
Line Pressure Test
The line pressure test checks oil pump and control valve
pressure regulator valve function. It will also detect oil
leakage.
Line Pressure Test Procedure:
1. Check the level of the engine coolant, the engine oil,
and the automatic transmission fluid.
Replenish if required.
2. Block the wheels and set the parking brake.
3. Remove the pressure detection plug at the left side of
the transmission case.
Set J±29770±A pressure gauge and adapter to the
pressure detection plug hole.
241RS001
4. Start the engine and allow it to idle until the engine
coolant temperature reaches 70 ± 80
C (158 ±
176
F).
5. Hold the brake pedal down as far as it will go.
6. Place the selector in the ªDº range.
7. Note the pressure gauge reading with the engine
idling.
8. Gradually push the accelerator pedal to the floor. The
throttle valve will be fully open.
Note the pressure gauge reading with the accelerator
pedal fully depressed.
NOTE: Do not continuously run this test longer than 5
seconds.
9. Release the accelerator pedal.
10. Place the selector in the ªNº range.
11. Run the engine at 1,200 rpm for one minute.
This will cool the transmission fluid.
12. Repeat Steps 7 ± 11 for the ª3º, ª2º, ªLº, and ªRº
ranges.
13. Install a pressure detection plug to the transmission
case, applying recommended thread locking agent
(LOCTITE 242) or its equivalent to thread of plug.
Make sure that thread is cleaned before applying
locking agents.
14. Tighten the pressure detection plug to the specified
torque.
Torque: 9 ± 14N´m (7 ± 10lb ft)

7A±67 AUTOMATIC TRANSMISSION (4L30±E)
e. Converter hub scored or damaged.
f. Internal failure in stator.
g. Contamination from engine coolant.
h. Excess end play.

Rotate transmission, bell housing up. Spin
converter to insure proper fit.62. Fill transmission through the overfill screw hole of oil
pan, using ATF DEXRON)±III. Refer to
Changing
Transmission Fluid in this section.
240RY002

7A1±10
TRANSMISSION CONTROL SYSTEM (4L30±E)
Functions of Input / Output Components
ComponentsFunction
Speed sensor
(fixed to transmission)Senses rotation of output shaft and feeds the data to Powertrain Control Module
(PCM).
Throttle position sensor
(TPS)
(fixed to engine)Senses the extent of throttle valve opening and the speed of the throttle valve
lever motion to open the valve. Feeds the data to PCM.
I
N
Brake switch
(fixed to brake pedal)Senses whether the driver has pressed the brake pedal or not and feeds the
information to PCM.
N
P
UMode switch (fixed to
transmission)Senses the select lever position, and feeds the information to PCM.
U
T

S
Power drive switch
(fixed to front console)Senses whether the driver has selected the power mode, and feeds the
information to PCM.
S
IT/M oil temperature sensorSenses the T/M oil temperature and feeds the data to PCMI
G
N
A
Engine coolant
temperature sensorSenses the engine coolant temperature, and feeds the data to PCM.
A
LEngine speed signalFeeds the signals monitoring engine speed to PCM from crank angle sensor.L
Air conditioning informationSenses whether the air conditioner has been switched on or not, and feeds the
information to PCM.
Winter switch (fixed to front
console)Senses whether the driver has selected the winter mode, and feeds the
information to PCM.
Cruise controller
(Overdrive OFF signal)Downshift takes place when overdrive OFF signal is received from auto cruise
controller integrated in PCM.
O
U
T
S
Shift solenoid A, BSelects shift point and gear position suited to the vehicle running condition on
the basis of PCM output.
P
U
TS
O
L
E
Band apply solenoidControls oil flow suited to the vehicle running condition on the basis of PCM
output.

S
I
G
E
N
O
I
Torque Converter
Clutch PWM solenoidControls clutch apply suited to the vehicle running condition on the basis of PCM
output.
G
N
A
LI
DForce motor
(Pressure regulator
valve)Adjusts the oil pump delivery pressure to line pressure suited to the vehicle
running condition on the basis of PCM output.

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±33
DTC P0711 Transmission Fluid Temperature (TFT) Sensor Performance
D07R200004
Circuit Description
The TFT sensor is a thermister that controls the signal
voltage to the PCM. The PCM supplies a 5 volt reference
signal to the sensor on circuit RED/BLK. When the
transmission fluid is cold, the sensor resistance is high
and the PCM detects high signal voltage. As the
transmission fluid temperature increases to normal
operating temperature of 100
C (212
F), the sensor
resistance becomes less and the voltage decreases to
1.5 to 2 volts.
When the PCM detects a TFT sensor that remains at the
startup value, or a sensor that has a change delta of
greater than 20
C (36
F) less than 1 second, DTC P0711
sets. DTC P0711 is a type D.
Conditions For Setting The DTC

No VSS DTCs P0722 or P0723.

No Transmission Component Slipping DTC P1870.

Engine is running.

TFT is between 20 A/D (Analog/Digital) counts and
248 A/D counts.

TFT is between ±40
C (±40
F) and +21
C (69.8
F)
at engine startup.

Engine coolant temperature is greater than 70
C
(150
F).

Engine coolant temperature has changed by greater
than 50
C (90
F) since engine startup.

Vehicle speed has been greater than 5 mph for
greater than 410 seconds since engine startup
(cumulative timer).

TCC slip speed has been greater than 120 rpm for
greater than 410 seconds since engine startup
(cumulative timer).

Battery voltage is between 10 and 16 volts.
All of the above is true and either of the following occurs:

If the sensor is stuck, the TFT has not changed for
greater than 2 counts (from startup temperature) for
greater than 410 seconds.
If the sensor shows an unrealistic change, the TFT
exhibits a change delta of greater than 20
C (36
F),
greater than 14 times in 7 seconds.
Action Taken When The DTC Sets

Transmission default temperature will be:
80
C (176
F) if engine temperature code is set.
100
C (212
F) if engine temperature is warm.
80
C (176
F) if engine run time is greater than 5
minutes.
21
C (69.8
F) if engine run time is less than 5
minutes.

The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).
Conditions For Clearing The DTC

The DTC can be cleared from the PCM history by
using a scan tool.

The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.

The PCM will cancel the DTC default actions when
the fault no longer exists and the ignition is cycled ªoffº
long enough to power down the PCM.
Diagnostic Aids

Inspect the wiring for poor electrical connection at the
PCM. Inspect the wiring for poor electrical
connections at the transmission 7-way connector.
Look for the following conditions:
a. A bent terminal
b. A backed out terminal
c. A damaged terminal
d. Poor terminal tension
e. A chafed wire
f. A broken wire inside the insulation

8E±2METER AND GAUGE
Meter Assembly
General Description
The meter assembly has the speedometer, tachometer,
engine coolant temperature gauge, fuel gauge and
warning/indicator lights.
Layout for Meters/Gauges, Warning
Lights, Indicator Lights and
Illumination Lights
Front View
821R200022
Legend
(1) Tachometer
(2) Warning Light Lens
(3) Speedometer
(4) Fuel Gauge(5) Reset Button
(6) Warning Light Lens
(7) A/T Shift Indicator
(8) Engine Coolant Temperature Gauge

METER AND GAUGE8E±5
Connector A
TerminalFunction
1Ð
2Intelligent suspension indicator light
3TOD indicator light ªRearº
4Ð
5TOD indicator light ªAUTOº
6Ð
7TOD indicator light ªFrontº
8A/T shift indicator light ª3º
9A/T shift indicator light ªDº
10A/T shift indicator light ª2º
11SRS ± air bag warning light
12Ground
13Battery
14Stater switch
15A/T oil temperature warning light
16Seat belt indicator light
17Charge warning light
18Ð
19Ð
20Ð
21A/T shift indicator light ªLº
22ABS warning light
23Ð
24Ð
25Reduced power warning light
26Oil pressure warning light
27Check trans warning light
28MIL(check engine) warning light
29Check TOD
30Engine coolant temperature gauge
Connector B
TerminalFunction
1A/T shift indicator light ªRº
2A/T shift indicator light
3A/T shift indicator light ªNº
4A/T shift indicator light ªPº
5Illumination light
6Engine revolution pulse
7Speed sensor pulse
8Turn signal indicator light (LH)
9Brake warning light
10High beam indicator light (+)
11High beam indicator light (±)
12Turn signal indicator light (RH)
13Turn signal indicator light
14Ð
15Illumination light
16Ground
Connector C
TerminalFunction
1Starter switch
2Ð
3Fuel gauge
4Low fuel warning light
5Cruise set indicator light
6Ð
7Ð
8Ð
9Ð
10Sport mode indicator light
11Ð
12Winter drive indicator light
13Power drive indicator light
14Ð