2002 ISUZU AXIOM Service Repair Manual

fuel tank capacity air conditioning adblue reset brake rotor length climate settings

Page 1713 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±26
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0218 Transmission Fluid Over Temperature
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to

Page 1714 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±27
DTC P0705 Transmission Range Switch (Mode Switch) Illegal Position
D07R200005
Circuit Description
The range switch supplies the Powertrain Control
Module

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±27
DTC P0705 Transmission Range Switch (Mode Switch) Illegal Position
D07R200005
Circuit Description
The range switch supplies the Powertrain Control
Module (PCM) with information regarding the selector
lever position: P, R, N, D, 3, 2 or L. The selector lever
position is indicated by the state of four ON/OFF
contacts. The range switch is located on one side of
the transmission. It is on the transmission manual
shaft and is fixed to the main case.
The range switch is also used to provide the
information P or N to the engine crank wiring. The
engine can be cranked only if connector E±41
terminal 4(H) is connected to terminal 1(E) which is
connected to ground.
The range switch is also used to provide the backup
lamp power in reverse. This is the reason why the
range switch is supplied through a 15A fuse (TURN,
BACK UP). This fuse can burn due to a short circuit in
the back up lamp.
This DTC detects when a fuse is open or the range switch
circuit does not work. This is a type ªDº DTC.
Conditions For Setting The DTC
Range switch illegal positions met for 5 seconds.
Action Taken When The DTC Sets
Default to D position.
Inhibit torque management.
Maximum line pressure.Turn Force Motor OFF.
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
Refer to accompanying chart for the normal range
signals and the illegal combinations.
Inspect the wiring for poor electrical connections at
the PCM and at the transmission 8±way connector.
Look for possible bent, backed out, deformed or
damaged terminals. Check for weak terminal tension
as well. Also check for a chafed wire that could short
to bare metal or other wiring. Inspect for a broken wire
inside the insulation.
When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
Refer to the
ªRange Switch Logic Tableº for further
information.

Page 1715 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±28
TRANSMISSION CONTROL SYSTEM (4L30±E)
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks the indicated range signal to the
manual valve a

Page 1716 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±29
DTC P0705 Transmission Range Switch (Mode Switch) Illegal Position
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) S

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±29
DTC P0705 Transmission Range Switch (Mode Switch) Illegal Position
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emissions in
Engine section
2Perform the following checks:
The transmission linkage from the select lever to the manual
valve is adjusted properly.
Diagnostic circuit check.
Were the checks performed?
Go to Step 3Ð
31. Install the scan tool.
2. With the engine ªoffº, turn the ignition switch ªonº.
NOTE: Before clearing DTC(s), use the scan tool to record ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
4. Select each transmission range: DL, D2, D3, D4, N, R, and P.
Does each selected transmission range match the scan tool
ªRange Switchº display?
Go to Diagnostic
Aids
Go to Step 4
4Are all range switch pin displays incorrect?Go to Step 5Go to Step 6
5Check fuse and wiring to the 8±way connector terminal 5(D) for
opens.
Refer to
Mode Switch in Automatic Transmission (4L30±E)
section.
If no problem was found, replace the range switch.
Is the replacement complete?
Go to Step 9Ð
61. Disconnect the 8±way range switch connector.
2. Using ohmmeter, check continuity between terminal 5(D) and
respectively terminals 3(G), 6(C), 7(B) and 8(A) of the 8±way
range switch connector.
3. Move shift selector lever through all positions and compare
results with ªRange Switch Logic Tableº.
Is one range switch pin display incorrect?
Go to Step 7Go to Step 8
7Check the affected wiring and connector, and repair.
Is the repair complete?
Go to Step 9Ð
8Check the Powertrain Control Module (PCM) connectors for poor
connection.
If no problem was found, replace the PCM.
Is the replacement complete?
Go to Step 9Ð
91. After the repair is complete, use the scan tool to select ªDTCº,
then ªClear Infoº function and road test the vehicle.
2. Review the scan tool ªDTC Infoº.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to
Step 1
Repair verified
Exit DTC table

Page 1717 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±30
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
D07R200005
Circuit Description
The range switch supplies the Powertrain Control
Module (PCM

7A1±30
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
D07R200005
Circuit Description
The range switch supplies the Powertrain Control
Module (PCM) with information regarding the selector
lever position: P, R, N, D, 3, 2 or L. The selector lever
position is indicated by the state of four ON/OFF
contacts. The range switch is located on one side of
the transmission. It is on the transmission manual
shaft and is fixed to the main case.
The range switch is also used to provide the
information P or N to the engine crank wiring. The
engine can be cranked only if connector E±41
terminal 4(H) is connected to terminal 1(E) which is
connected to ground.
The range switch is also used to provide the back up
lamp power in reverse. This is the reason why the
mode switch is supplied through a 15A fuse (TURN,
BACK UP). This fuse can burn due to a short circuit in
the back up lamp.
This DTC detects an invalid state of the range switch
or the range switch circuit by deciphering the range
switch inputs. This is a type ªDº DTC.
Conditions For Setting The DTC
This DTC will set if any of the following conditions occurs:
Condition 1 (ªRº bad position):
Engine is running.
No output speed DTCP0722, P0723.Output speed greater than 3,200 RPM.
Range switch indicates ªRº.
All conditions met for 4 seconds.
Condition 2 (ªPº or ªNº bad position):
Engine is running.
No TPS codes.
Engine speed is less than 3,000 RPM.
TP angle is greater than 20%.
Range switch indicates ªPº or ªNº.
All conditions met for 4 seconds.
Action Taken When The DTC Sets
Default to ªDº position.
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.

Page 1718 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±31
Diagnostic Aids
Refer to the accompanying chart for the normal range
signals and the illegal combinations.
Inspect the wiring for poor electrical connect

Page 1719 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±32
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) Syste

7A1±32
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emissions in
Engine section
2Perform the following checks:
The transmission linkage from the select lever to the manual
valve is adjusted properly.
Diagnostic circuit check.
Were the checks performed?
Go to Step 3Ð
31. Install the scan tool.
2. With the engine ªoffº, turn the ignition switch ªonº.
NOTE: Before clearing DTC(s), use the scan tool to record ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
4. Select each transmission range: DL, D2, D3, D4, N, R, and P.
Does each selected transmission range match the scan tool
ªRange Switchº display?
Go to Diagnostic
Aids
Go to Step 4
4Are all range switch pin displays incorrect?Go to Step 5Go to Step 6
5Check fuse and wiring to the 8±way connector terminal 5(D) for
opens.
Refer to
Mode Switch in Automatic Transmission (4L30±E)
section.
If no problem was found, replace the range switch.
Is the replacement complete?
Go to Step 9Ð
61. Disconnect the 8±way range switch connector.
2. Using ohmmeter, check continuity between terminal 5(D) and
respectively terminals 3(G), 6(C), 7(B) and 8(A) of the 8±way
range switch connector.
3. Move shift selector lever through all positions and compare
results with ªRange Switch Logic Tableº.
Is one range switch pin display incorrect?
Go to Step 7Go to Step 8
7Check the affected wiring and connector, and repair.
Is the repair complete?
Go to Step 9Ð
8Check the Powertrain Control Module (PCM) connectors for poor
connection.
If no problem was found, replace the PCM.
Is the replacement complete?
Go to Step 9Ð
91. After the repair is complete, use the scan tool to select ªDTCº,
then ªClear Infoº function and road test the vehicle.
2. Review the scan tool ªDTC Infoº.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to
Step 1
Repair verified
Exit DTC table

Page 1720 of 2100

ISUZU AXIOM 2002 Service Repair Manual 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
vo

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 100C (212F), 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 20C (36F) 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 ±40C (±40F) and +21C (69.8F)
at engine startup.
Engine coolant temperature is greater than 70C
(150F).
Engine coolant temperature has changed by greater
than 50C (90F) 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 20C (36F),
greater than 14 times in 7 seconds.
Action Taken When The DTC Sets
Transmission default temperature will be:
80C (176F) if engine temperature code is set.
100C (212F) if engine temperature is warm.
80C (176F) if engine run time is greater than 5
minutes.
21C (69.8F) 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

Load next 8 pages

Page: < prev 1-10 ... 1681-1688 1689-1696 1697-1704 1705-1712 1713-1720 1721-1728 1729-1736 1737-1744 1745-1752 ... 2104 next >

interior lights high beam fuse chart trip computer reset sun roof coolant level