Download Hyundai Accent 2005 Pump

Hyundai Accent 2005 Pump
SERVICE MANUAL
Applies to: Accent 2005
GROUP
Fuel System
DTC Troubleshooting Procedures
DTC - P2405
GENERAL DESCTIPTION
The DM-TL (Diagnostic Module Tank Leakage) is used to monitor the evaporative
system for leaks. The diagnostic module consists of an air filter, an electrical driven air
pump, a change-over valve and a 0.02 inch orifice for reference measurement . Heated
type Module applied to improved Leakage Detection Module. Using the heated DM-TL
can completely eliminate the humidity influence. So, the Leakage detection is never
stopped caused by the current fluctuation (due to dew effects at extreme high humidity).
DTC DESCRIPTION
If the value exceeds threshold value, the PCM judged this as a fault and DTC is set.
DTC DETECTING CONDITION
Item
Detecting Condition
Possible cause
Monitoring
Strategy
? DM-TL : pump motor current
? Current at reference mode phase < 12 ? Leakage on EVAP.
SYSTEM
Ma
? Faulty DMTL.
Enable Conditions
? Faulty PCM
Diagnostic Time ? 10 sec
Threshold value
Fail Safe
SPECIFICATION
DMTL Motor Normal Parameter At 20?(68?F)
Resistance
approximately 118 ?
SCHEMATIC DIAGRAM
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SIGNAL WAVEFORM AND DATA
MONITOR DTC STATUS
This is the inspection procedure to determine whether it is present DTC or memoried one
by monitoring the current signal or by using the function of oscilloscope with Hi-scan
pro.
1. Connect scantool to Data Link Connector(DLC).
2. Warm up the engine to normal operating temperature.
3. Evap. Leakage TestEvaporative Emissions Systems (EVAP) Leak Tests can be
run by the Scan Tool. The tests are automated and provide either a pass-fail result
or directions to check for DTCs.
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A.
B.
C.
D.
Connect scantool to Data Link Connector(DLC).
Warm up the engine to normal operating temperature.
Perform "07 EVAP. LEAKAGE TEST" mode
Is DTC P2405 set again?
? Go to "W/Harness Inspection" procedure.
? Fault is intermittent caused by poor contact in the sensor’s and/or PCM’s
connector or was repaired and PCM memory was not cleared. Thoroughly
check connectors for looseness, poor connection,bending, corrosion,
contamination, deterioration, or damage. Repair or replace as necessary
and go to "Verification vehicle Repair" procedure
TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and
terminals. Faults can also be caused by interference from other electrical systems,
and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion,
contamination,deterioration, or damage.
3. Has a problem been found?
? Repair as necessary and go to "Verification of vehicle Repair" procedure.
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? Go to "Power circuit insepction" procedure.
POWER CIRCUIT INSPECTION
1. Ignition "OFF"
2. Disconnect DM-TL connector.
3. Ignition "ON" AND Engine "OFF"
4. Measure voltage between terminal 4 of DM-TL harness connector and chassis
ground.
Specification : Approx. B+
5. Is measure voltage within Specification?
? Go to "Control circuit insepction" procedure.
? Check for open or short circuit between Main relay and terminal 3 of DM-TL?
Especially check "10A ECU" fuse is blown or not installed Repair as necessary
and go to "Verification Vehicle Repair" procedure.
CONTROL CIRCUIT INSPECTION
1. Ignition "OFF"
2. Disconnect DM-TL connector.
3. Ignition "ON" AND Engine "OFF"
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4. Measure voltage between terminal 2 of DM-TL harness connector and chassis
ground.
Specification : approximately 3.7V
5. Is measure voltage within Specification?
? Go to "Component Inspection" procedure.
? Check for Open or short in Solenoid Control harness.? Repair as necessary and
then go to "Verification of Vehicle Repair" procedure.
COMPONENT INSPECTION
1. Check Solenoid
A. Ignition "OFF"
B. Disconnect DM-TL connector.
C. Measure resistance between terminal 2 and 4 of DM-TL harness
connector.(To sender side)
Specification : 20?(68?F) : approximately 31?
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D. Is measure resistance within Specification?
? Go to "Check Pump" as below.
? Substitute with a known-good Pump motor and check for proper
operation. If the problem is corrected, replace Pump motor and then go to
"Verification of Vehicle Repair" procedure.
2. Check Pump
A. Ignition "OFF"
B. Disconnect DM-TL connector.
C. Measure resistance between terminal 1 and 4 of DM-TL harness
connector.(To sender side)
Specification : 20?(68?F) : approximately 118?
D. Is measure resistance within Specification?
? Substitute with a known-good PCM and check for proper operation. If
the problem is corrected, replace PCM and then go to "Verification of
Vehicle Repair" procedure.
? Substitute with a known-good DM-TL and check for proper operation. If
the problem is corrected, replace DM-TL and then go to "Verification of
Vehicle Repair" procedure.
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
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1. Monitor and record the Freeze Frame Data for the Diagnostic Trouble Code
(DTC) which has been diagnosed.
2. Using a Scantool, Clear the DTCs.
3. Operate the vehicle within conditions noted in the freeze frame data or enable
conditions.
4. Monitor that all rediness test have been verified as "Complete"
5. Are any DTCs present ?
? Go to the applicable troubleshooting procedure.
? System is performing to specification at this time.
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