Hyundai Santa Fe (2006 year). Manual - part 488
FLA -18
FUEL SYSTEM
GASOLINE ENGINE
CONTROL SYSTEM
DESCRIPTION
E722E9A3
If the Gasoline Engine Control system components (sen-
sors, ECM, injector, etc.) fail, interruption to the fuel sup-
ply or failure to supply the proper amount of fuel for various
engine operating conditions will result. The following situ-
ations may be encountered.
1.
Engine is hard to start or does not start at all.
2.
Unstable idle.
3.
Poor driveability
If any of the above conditions are noted, first perform a
routine diagnosis that includes basic engine checks (ig-
nition system malfunction, incorrect engine adjustment,
etc.). Then, inspect the Gasoline Engine Control system
components with the HI-SCAN (Pro).
NOTE
• Before removing or installing any part, read the
diagnostic trouble codes and then disconnect the
battery negative (-) terminal.
• Before disconnecting the cable from battery ter-
minal, turn the ignition switch to OFF. Removal
or connection of the battery cable during engine
operation or while the ignition switch is ON could
cause damage to the ECM.
• The control harnesses between the ECM and
heated oxygen sensor are shielded with the
shielded ground wires to the body in order to
prevent the influence of ignition noises and radio
interference. When the shielded wire is faulty,
the control harness must be replaced.
• When checking the generator for the charging
state, do not disconnect the battery ’+’ terminal
to prevent the ECM from damage due to the volt-
age.
• When charging the battery with the external
charger, disconnect the vehicle side battery
terminals to prevent damage to the ECM.
MALFUNCTION INDICATOR LAMP (MIL)
[EOBD]
A malfunction indicator lamp illuminates to notify the driver
that there is a problem with the vehicle. However, the MIL
will go off automatically after 3 subsequent sequential driv-
ing cycles without the same malfunction. Immediately af-
ter the ignition switch is turned on (ON position - do not
start), the MIL will illuminate continuously to indicate that
the MIL operates normally.
Faults with the following items will illuminate the MIL.
• Catalyst
• Fuel system
• Mass Air Flow Sensor (MAFS)
• Intake Air Temperature Sensor (IATS)
• Engine Coolant Temperature Sensor (ECTS)
• Throttle Position Sensor (TPS)
• Upstream Oxygen Sensor
• Upstream Oxygen Sensor Heater
• Downstream Oxygen Sensor
• Downstream Oxygen Sensor Heater
• Injector
• Misfire
• Crankshaft Position Sensor (CKPS)
• Camshaft Position Sensor (CMPS)
• Evaporative Emission Control System
• Vehicle Speed Sensor (VSS)
• Idle Speed Control Actuator (ISCA)
• Power Supply
• ECM/ PCM
• MT/AT Encoding
• Acceleration Sensor
• MIL-on Request Signal
• Power Stage
NOTE
Refer to "INSPECTION CHART FOR DIAGNOSTIC
TROUBLE CODES (DTC)" for more information.
[NON-EOBD]
A malfunction indicator lamp illuminates to notify the driver
that there is a problem with the vehicle. However, the MIL
will go off automatically after 3 subsequent sequential driv-
ing cycles without the same malfunction. Immediately af-
ter the ignition switch is turned on (ON position - do not
start), the MIL will illuminate continuously to indicate that
the MIL operates normally.
Faults with the following items will illuminate the MIL
• Heated oxygen sensor (HO2S)
• Mass Air Flow sensor (MAFS)
• Throttle position sensor (TPS)
• Engine coolant temperature sensor (ECTS)
• Idle speed control actuator (ISCA)
• Injectors
• ECM
NOTE
Refer to "INSPECTION CHART FOR DIAGNOSTIC
TROUBLE CODES (DTC)" for more information.
[INSPECTION]
1.
After turning ON the ignition key, ensure that the light
illuminates for about 5 seconds and then goes out.