fuel filter location ISUZU AXIOM 2002 Service Repair Manual

6C±1 ENGINE FUEL (6VE1 3.5L)
AXIOM
ENGINE
ENGINE FUEL
CONTENTS
Service Precaution 6C±1. . . . . . . . . . . . . . . . . . . . . .
General Description 6C±2. . . . . . . . . . . . . . . . . . . . .
Fuel Metering 6C±3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Filter 6C±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6C±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 6C±4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6C±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 6C±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
In±Tank Fuel Filter 6C±5. . . . . . . . . . . . . . . . . . . . .
Fuel Pump Flow Test 6C±5. . . . . . . . . . . . . . . . . . .
Fuel Pump 6C±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Pump and Associated Parts 6C±6. . . . . . . .
Removal 6C±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6C±7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tube / Quick ± Connector Fittings 6C±8. . . . .
Precautions 6C±8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Cautions During Work 6C±8. . . . . . . . . . . . . . . . . . Removal 6C±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reuse of Quick±Connector 6C±9. . . . . . . . . . . . .
Assembling Advice 6C±9. . . . . . . . . . . . . . . . . . . .
Fuel Pump Relay 6C±10. . . . . . . . . . . . . . . . . . . . . . . .
General Description 6C±10. . . . . . . . . . . . . . . . . . . .
Fuel Tank 6C±10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank and Associated Parts 6C±10. . . . . . . . .
Removal 6C±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6C±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Gauge Unit 6C±12. . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 6C±12. . . . . . . . . . . . . . .
Fuel Filler Cap 6C±12. . . . . . . . . . . . . . . . . . . . . . . . . .
General Description 6C±12. . . . . . . . . . . . . . . . . . . .
Inspection 6C±12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 6C±13. . . . . . . . . . . . .
Special Tool 6C±13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

6E±28
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Engine Component Locator Table
Number
NameLocation
1Linear Exhaust Gas Recirculation (EGR) ValveRear right side of the engine
2Throttle Position (TP) SensorOn the throttle body
3Intake Air Temperature (IAT) SensorOn the intake air duct near the throttle body
4Check Engine (MIL) LightOn the instrument panel beneath the
tachometer
5Positive Crankcase Ventilation (PCV) ValveOn the left of the cylinder head cover
6Air CleanerLeft front of the engine bay
7Mass Air Flow (MAF) SensorAttached to the air filter box
8Fuel RailOn the Common Chamber
9Fuel Pressure RegulatorRear side of the engine
10ION Sensing moduleBolted to the top of the Common Chamber
11Common ChamberTop of the engine
12EVAP Duty Solenoid ValveBolted to the front of the coolant pipe
13Fuse/Relay BoxAlong the inside of the right fender
14Manifold Absolute Pressure (MAP) SensorBolted to the top of the Common Chamber
15Throttle BodyBetween the intake air duct and the Common
Chamber
16Engine Coolant Temperature SensorOn the coolant crossover pipe at the front of
the engine, near the throttle body
17Power Train Control Module (PCM)Along the inside of the left fender

6E±29
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Undercarriage Component Locator
014RW142
Undercarriage Component Locator Table
Number
NameLocation
1Fuel Pump Assembly and Vapor Pressure
(Fuel Tank Pressure) SensorInstalled in the top of the fuel tank
2Fuel Gauge UnitInstalled in the top of the fuel tank
3Evaporative (EVAP) CanisterOn the top of the bracket that is located behind
the cross member
4Vent Solenoid (EVAP Canister)On the top of the bracket that is located behind
the cross member
5Fuel FilterLocated along the inside of the right frame rail,
ahead of the fuel tank
6Vehicle Speed Sensor (VSS)Protrudes from the transmission housing, just
ahead of the propeller shaft
7Heated Oxygen Sensor (Bank 1, HO2S 1)Threaded into the exhaust pipe behind the
right-hand catalytic converter
8Heated Oxygen Sensor (Bank 1, HO2S 2)Threaded into the exhaust pipe ahead of the
right-hand catalytic converter
9Heated Oxygen Sensor (Bank 2, HO2S 1)Threaded into the exhaust pipe ahead of the
left-hand catalytic converter
10Heated Oxygen Sensor (Bank 2, HO2S 2)Threaded into the exhaust pipe behind the
left-hand catalytic converter

6E±134
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0102 MAF Sensor Circuit Low Frequency
060R200052
Circuit Description
The mass air flow (MAF) sensor measures the amount of
air which passes through it into the engine during a given
time. The powertrain control module (PCM) uses the
mass air flow information to monitor engine operating
conditions for fuel delivery calculations. A large quantity
of air entering the engine indicates an acceleration or high
load situation, while a small quantity of air indicates
deceleration or idle.
The MAF sensor produces a frequency signal which can
be monitored using a Tech 2. The frequency will vary
within a range of around 4 to 7g/s at idle to around 25 to 40
g/s at maximum engine load. DTC P0102 will be set if the
signal from the MAF sensor is below the possible range of
a normally operating MAF sensor.
Conditions for Setting the DTC

The engine is running above 500 RPM for more than
10 seconds.

System voltage is above 11.5 volts.

MAF signal frequency is below 1.6g/s for a total of
50-percent of the last 1000 samples monitored. A
sample is taken every cylinder event.
Action Taken When the DTC Sets

The PCM will ON the MIL after second trip with
detected fault.

The PCM calculates an air flow value based on idle air
control valve position, throttle position, RPM and
barometric pressure.
The PCM will store conditions which were present
when the DTC was set as Freeze Frame and in the
Failure Records data.
Conditions for Clearing the MIL/DTC

The PCM will turn the MIL ªOFFº on the third
consecutive trip cycle during which the diagnostic has
been run and the fault condition is no longer present.

A history DTC P0102 will clear after 40 consecutive
warm-up cycles have occurred without a fault.

DTC P0102 can be cleared by using the Tech 2 ªClear
Infoº function or by disconnecting the PCM battery
feed.
Diagnostic Aids
Check for the following conditions:

Poor connection at PCM ± Inspect harness connectors
for backed-out terminals, improper mating, broken
locks, improperly formed or damaged terminals, and
poor terminal-to-wire connection.

Misrouted harness ± Inspect the MAF sensor harness
to ensure that it is not routed too close to high voltage
wires.

Damaged harness ± Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
Tech 2 while moving connectors and wiring harnesses
related to the MAF sensor. A change in the display will
indicate the location of the fault.

Plugged intake air duct or filter element ± A wide-open
throttle acceleration from a stop should cause the
mass air flow displayed on a Tech 2 to increase from

6E±227
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

A history DTC P0172 will clear after 40 consecutive
warm-up cycles have occurred without a fault.

DTC P0172 can be cleared by using the Tech 2 ªClear
Infoº function or by disconnecting the PCM battery
feed.
Diagnostic Aids
Check for the following conditions:

Poor connection at PCM ± Inspect harness connectors
for backed-out terminals, improper mating, broken
locks, improperly formed or damaged terminals, and
poor terminal-to-wire connection.

Damaged harness ± Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
Bank 1 HO2S 1 display on the Tech 2 while moving
connectors and wiring harnesses related to the engine
harness. A change in the display will indicate the
location of the fault.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how oftenthe condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
2. DTCs other than P0172 and P0175 may indicate a
condition present which may cause a lean condition.
If this is the case, repairing the condition which
caused the other DTC will most likely correct the
DTC P0172/P0175.
4. If the DTC P0172 test passes while the Failure
Records conditions are being duplicated, the rich
condition is intermittent. Refer to
Diagnostic Aids or
Symptoms for additional information on diagnosing
intermittent problems.
DTC P0172 ± Fuel Trim System Rich Bank 1

StepActionValue(s)Ye sNo
1Was the ªOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go to OBD
System
Check
2Are any DTCs set other than P0172 and P0175?
Ð
Go to the
applicable
DTC charts
and repair the
other DTCs
before
proceeding
with this chart
Go to Step 3
31. Start the engine and operate the vehicle in ªclosed
loopº.
2. Observe ªB1 Long Term Fuel Trimº display on the
Tech 2.
Is the displayed value more negative than the specified
value?
L.T. Fuel
Trim: ±15%
(auto. trans.)
OR ±12%
(man. trans.)
Go to Step 5Go to Step 4
41. Review and record the Tech 2 Failure Records data.
2. Clear the DTC P0172/P0175 and operate the
vehicle to duplicate the Failure Records conditions.
3. Monitor the Tech 2 ªDTCº info for DTC P0172 while
operating the vehicle to duplicate the Failure
Records conditions.
4. Continue operating the vehicle until the DTC P0172
test runs and note test result.
Does the Tech 2 indicate DTC P0172 failed this
ignition?
ÐGo to Step 5
The rich
condition is
not present.
If a
driveability
symptom still
exists, refer
to
Symptoms.
5Is DTC P0175 also set?ÐGo to Step 6Go to Step 15
6Visually and physically inspect the air filter element and
replace it if necessary.
Did the air filter require replacement?
ÐVerify repairGo to Step 7
7Visually and physically inspect the air intake duct for
collapse or restriction and repair if necessary.
Did your inspection reveal a condition requiring repair?
ÐVerify repairGo to Step 8

6E±235
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

A history DTC P0175 will clear after 40 consecutive
warm-up cycles have occurred without a fault.

DTC P0175 can be cleared by using the Tech 2 ªClear
Infoº function or by disconnecting the PCM battery
feed.
Diagnostic Aids
Check for the following conditions:

Poor connection at PCM ± Inspect harness connectors
for backed -out terminals, improper mating, broken
locks, improperly formed or damaged terminals, and
poor terminal-to-wire connection.

Damaged harness ± Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
Bank 2 HO2S 1 display on the Tech 2 while moving
connectors and wiring harnesses related to the engine
harness. A change in the display will indicate the
location of the fault.
Reviewing the Failure Records Vehicle mileage since the
diagnostic test last failed may help determine how oftenthe condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
2. DTCs other than P0172 and P0175 may indicate a
condition present which may cause a lean condition.
If this is the case, repairing the condition which
caused the other DTC will most likely correct the
DTC P0172/P0175.
4. If the DTC P0175 test passes while the Failure
Records conditions are being duplicated, the rich
condition is intermittent. Refer to
Diagnostic Aids or
Symptoms for additional information on diagnosing
intermittent problems.
DTC P0175 ± Fuel Trim System Rich Bank 2

StepActionValue(s)Ye sNo
1Was the ºOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go to OBD
System
Check
2Are any DTCs set other than P0172 and P0175?
Ð
Go to the
applicable
DTC charts
and repair the
other DTCs
before
proceeding
with this
chart.
Go to Step 3
31. Start the engine and operate the vehicle in ªclosed
loopº.
2. Observe the ªBANK 2 L.T. FUEL TRIMº display on
the Tech 2.
Is the displayed value more negative than the specified
value?
L.T. Fuel
Trim: ±15%
(auto. trans.)
OR ±12%
(man. trans.)
Go to Step 5Go to Step 4
41. Review and record the Tech 2 Failure Records data.
2. Clear the DTC P0172/P0175 and operate the
vehicle to duplicate the Failure Records conditions.
3. Monitor the Tech 2 ªDTCº info for DTC P0175 while
operating the vehicle to duplicate the Failure
Records conditions.
4. Continue operating the vehicle until the DTC P0175
test runs.
5. Note the test result.
Does the Tech 2 indicate DTC P0175 failed this
ignition?
ÐGo to Step 5
The rich
condition is
not present.
If a
driveability
symptom still
exists, refer
to
Symptoms.
5Was DTC P0172 also set?ÐGo to Step 6Go to Step 15
6Visually and physically inspect the air filter element and
replace it if necessary.
Did the air filter require replacement?
ÐVerify repairGo to Step 7