Hyundai Santa Fe (2006 year). Manual — part 442
FL -378
FUEL SYSTEM
▶
When no value is detected : Go to "2. Check open in control circuit".
▶
When high voltage is detected : Repair short to battery in signal circuit and go to "Verification of Vehicle
Repair".
2.
Check open in control circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect glow relay and ECM connector.
3)
Check continuity between glow relay connector terminal 2 and ECM connector (C230-K) terminal 93.
specification : Continuity ( below 1.0
Ω
)
4)
Is the measured resistance within the specification?
YES
▶
Repair short to ground and go to "Verification of Vehicle Repair".
NO
▶
Repair open in control circuit and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
E0118EC9
1.
Check golw relay component coil resistance
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect glow relay.
3)
Measure the resistance of glow relay component coil.
Specification : 55±5
Ω
(20
℃
)
30
86
87
85
EGNG007M
4)
Is the measured resistance within the specification?
YES
▶
Go to "2. Check glow relay component operation" as follows.
NO
DTC TROUBLESHOOTING PROCEDURES
FL -379
▶
Replace glow relay and go to "Verification of Vehicle Repair".
2.
Check glow relay component operation
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect glow relay.
3)
Supplies random B+ and ground to coil sides of glow relay ( terminal 85, terminal 86).
4)
Check continuity between glow relay terminal 30 and terminal 87.
specification : When power is supplied : Continuity ( below 1.0
Ω
)
When power is not supplied : Discontinuity ( Infinite
Ω
)
30
86
87
85
B+
EGNG007N
5)
Is the measured resistance within the specification?
YES
▶
Go to "Verification of Vehicle Repair".
NO
▶
Replace glow relay and go to "Verification of Vehicle Repair".
※
Repeat this process 2~3 times.
VERIFICATION OF VEHICLE REPAIR
E5386DA9
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.
FL -380
FUEL SYSTEM
NO
▶
System operates within specification.
DTC TROUBLESHOOTING PROCEDURES
FL -381
DTC P0685 ECM/PCM POWER RELAY CONTROL CIRCUIT /OPEN
COMPONENT LOCATION
E84BCA07
Main Relay
Fuel Pump
Relay
SCMFL6507L
GENERAL DESCRIPTION
ED9CFAB0
Main relay operates when Ignition ON signal is inputted to ECM connector(C230-K) terminal 28 and it supplies power to
ECM, fuel pump relay, CMP, EGR actuator, throttle flap actuator, PTC heater relay and brake switch, etc. Especially, the
power supplied to ECM is used as a main power of injectors, rail pressure control valve and ECM operation.When IG
KEY ON signal is shut off during turning engine OFF, ECM stops injector operation then engine turns OFF. Approx. after
16 sec., ECM shuts OFF main relay and system turns OFF. Main relay is very important for engine operation, so careful
inspection is strongly required.
DTC DESCRIPTION
E3790076
When IG KEY OFF signal is imputted to ECM. ECM stops injector operation and engine turns OFF. Then, After-run(turning
off process of ECM internal system) is performed in order to shut system down. During this process, if main relay power
supply is cut too late or power supply is cut too early before After-run process completes, ECM detect main relay error
and P0685 is set.
DTC DETECTING CONDITION
E6C9ECE0
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• Engine running
Threshold Value
• When main relay responds to IG KEY - ON/OFF
signal too fast or slow
(After-run finished and it requires more than 2 sec. for
Main relay to be deactivated.Main relay deactivated
before After-run finished more than 3 times. )
Diagnostic Time
• Immediately
Fuel cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
Check
Lamp
NO
• Main relay circuit
• Main relay component
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