Hyundai: Engine D4FA. Manual — part 56
DIESEL CONTROL SYSTEM
FLA -95
TERMINAL AND CONNECTOR INSPECTION
EF23849D
1.
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
lems and damge of component.
2.
Perform checking procedure as follows.
1)
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
2)
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking
device and connecting condition between terminal and wiring.
NOTE
Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for
checking connecting condition. ( after checking, reconnect the pin at correct position. )
3.
Is the problem found?
YES
▶ Repair the trouble causing part and go to "Verification of Vehicle Repair".
NO
▶ Go to "Power Circuit Inspection".
POWER CIRCUIT INSPECTION
E66CE446
1.
IG KEY "OFF", ENGINE "OFF".
2.
Disconnect Lambda sensor connector.
3.
IG KEY "ON".
4.
Measure the voltage of Lambda sensor connector terminal 2.
Specification : 11.0V~13.0V ( Main relay ON power )
5.
Is the measured voltage within the specification?
YES
▶ Go to "Control Circuit Inspection".
NO
▶ Repair open in Main relay power circuit and E/R FUSE & RELAY BOX 10A SNSR fuse and go to "Verification of
Vehicle Repair".
CONTROL CIRCUIT INSPECTION
ED045D04
1.
Check Lambda sensor heater control circuit voltage
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector.
FLA -96
FUEL SYSTEM
3)
IG KEY "ON".
4)
Measure the voltage of Lambda sensor connector terminal 5.
Specification : 2.0V~2.5V
5)
Is the measured voltage within the specification?
YES
▶ Go to "Component Inspection".
NO
▶ No voltage is detected : Go to "2. Check open in Lambda sensor heater control circuit" as follows.
▶ High voltage is detected : Repair short to battery in control circuit and go to "Verification of Vehicle Repair".
2.
Check open in Lambda sensor heater control circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector and ECM connector.
3)
Check continuity between Lambda sensor connector terminal 5 and ECM connector terminal 51.
Specification : Continuity (below 1.0Ω )
4)
Is the measured resistance within the specification?
YES
▶ Repair short to ground in control circuit and go to "Verification of Vehicle Repair".
NO
▶ Repair open in Lambda sensor heater control circuit and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
E24EFE60
1.
Check Lambda sensor component heater coil resistance
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector.
3)
Check continuity between Lambda sensor component connector 2 and 5.
Specification : Refer to "Specification" of "General Information"
DIESEL CONTROL SYSTEM
FLA -97
EGNG009S
4)
Is the measured resistance within the specification?
YES
▶ Go to "Verification of Vehicle Repair".
NO
▶ Replace Lambda sensor and go to "Verification of Vehicle Repair".
VERIFICATION OF VEHICLE REPAIR
EC603223
After a repair, it is essential to verify that the fault is corrected.
1.
After connecting Scantool select "DIAGNOSTIC TROUBLE CODES(DTCs)" mode.
2.
Clear recorded DTC using Scantool.
3.
Drive the vehicle within DTC "Enable conditions" in "General information".
4.
After selecting "DIAGNOSTIC TROUBLE CODES(DTCs)" mode and check if DTC is recorded again.
5.
Are any DTCs recorded ?
YES
▶ Go to the DTC guide of recorded NO. in Scantool.
NO
▶ System operates within specification.
FLA -98
FUEL SYSTEM
DTC P0032 LAMBDA SENSOR HEATER CIRCUIT HIGH (BANK 1 / SENSOR
1)
COMPONENT LOCATION
E87987FD
Refer to DTC P0031.
GENERAL DESCRIPTION
E01B8283
Refer to DTC P0031.
DTC DESCRIPTION
E9697ECF
P0032 is set when short to battery in Lambda sensor control circuit is detected for more than 2.0 sec. at Lambda sensor
heater control condition. This code is due to 1)short to battery in heater control circuit or 2)Lambda sensor heater internal
open.
DTC DETECTING CONDITION
E4348FCF
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• Engine running
ThresholdValue
• Short to battery in Lambda sensor heater
control circuit
DiagnosticTime
• 2.0 sec.
Fuel Cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
MIL
NO
• Lambda sensor heater circuit
• Lambda sensor component
SPECIFICATION
ECDB0567
Refer to DTC P0031.
SCHEMATIC DIAGRAM
E893E5FC
Refer to DTC P0031.
SIGNAL WAVEFORM AND DATA
E588C82C
Refer to DTC P0031.
TERMINAL AND CONNECTOR INSPECTION
E7E7A8C7
Refer to DTC P0031.
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