Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1303
6E1–288
RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
DTC P0463 Fuel Level Sensor Circuit High Input
Step
Action
Value(s)
Yes
No
1
Was the On–Board Diagnostic (OBD) System Check
performed?
—
Go to Step 2
Go to
Powertrain
OBD System
Check
2
1. Install the Tech 2.
Observe the fuel level on the Tech 2.
Does the Tech 2 display the specified value?
99% – 100%
Go to Step 4
Go to Step 3
3
Refer to Fuel Gauge Diagnosis.
—
—
—
4
With a Digital Voltmeter (DVM) to ground, probe the
Fuel Level sensor input at the Sensor Input cavity.
Is the voltage greater than the specified value?
2.9 V
Go to Step 5
Go to Step 6
5
Check for a open in the Fuel Level sensor ground.
Was a problem found?
—
Go to Step 7
Go to Step 6
6
Check for an open in the Fuel Level sensor ground.
Was a problem found?
—
Go to Step 9
Go to Step
10
7
Repair the short to voltage in the fuel level input circuit.
Is the repair complete?
—
Go to Step
11
—
8
Repair the short to voltage in the fuel level output
circuit.
Is the repair complete?
—
Go to Step
11
—
9
Repair the open in the fuel level sensor ground.
Is the repair complete?
—
Go to Step
11
—
10
Replace the PCM.
IMPORTANT: The replacement PCM must be
reprogrammed. Refer to PCM
Replacement/Programming.
Is the action complete?
—
Go to Step
11
—
11
1. Using the Tech 2, select the DTC and the Clear Info.
2. Start the engine.
3. Idle at the normal operating temperature.
4. Select the Diagnostic Trouble Code and the
Specific.
5. Enter the Diagnostic Trouble Code number which
was set.
6. Operate the vehicle within the conditions for setting
this Diagnostic Trouble Code as specified in the
supporting text.
Does the Tech 2 indicate that this diagnostic Ran and
Passed?
—
System OK
Go to Step 2
6E1–289
RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Diagnostic Trouble Code (DTC) P0464 Fuel Level Sensor Noisy Signal
060R100041
Circuit Description
The fuel level sensor is an important input to powertrain
control module (PCM) for the enhanced evaporative
system diagnostic. Fuel level information is needed for
the PCM to know the volume of fuel in the tank. The fuel
level affects the rate of change in air pressure in the
evaporative system.
The sending unit is a float in the fuel tank which moves a
wiper arm across a variable resistor. Low fuel level
causes high resistance in the sending unit, and this is
recognized by the PCM because the circuit operates at a
corresponding low voltage. When the circuit is
continuously open or has a high resistance connection,
DTC P0464 is set.
Conditions for Setting the DTC
D
No Fuel level DTC’s set.
D
Fuel volume level is more than 3%.
D
IAT is more than –10
°
C.
D
Engine is Running.
When there are 40 test failures within 60 test samples, it is
stored.
Action Taken When the DTC Sets
D
The PCM records the operating conditions at the time
the diagnostic fails. The Failure Records buffers stores
this information.
D
A history DTC is stored.
D
The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).
Conditions for Clearing the DTC
D
A history DTC clears after 40 consecutive warm up
cycles without a fault.
D
The Tech 2 can clear the DTC.
Diagnostic Aids
D
Damaged harness–Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
fuel level display on the scan tool while moving
connectors and wiring harnesses related to the sensor.
A change in the display will indicate the location of the
fault.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
8. The following chart can be used to check the
sending unit:
6E1–290
RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
DTC P0464 Fuel Level Sensor Noisy Signal
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to
Step 2
Go to
OBD
System
Check
2
1. Ignition “Off”, Engine “Off”.
2. Perform “Visual/Fiscal Check” for following point.
D
Loosen harness connector
D
Clacked harness connector
D
Poor wires condition
D
Fuel tank condition
D
Poor sensor condition
3. If a problem is found, repair as necessary.
Was a problem found?
—
Verify repair
Go to
Step 3
3
1. Disassemble fuel tank on the vehicle.
2. Check the below items.
D
Fuel sender.
Was a problem found?
—
Go to
Step 4
Go to
Step 5
4
Replace the Fuel sender.
Was the action completed?
—
Verify repair
Go to
Step 5
5
Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed. Refer to On–Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
And also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Was the action complete?
—
—
—
6E1–291
RODEO Y22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
DIAGNOSTIC TROUBLE CODE (DTC)
P0480 COOLING FAN 1 CONTROL CIRCUIT MALFUNCTION
060R100042
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст