Hyundai Santa Fe (2006 year). Manual — part 722
MT -48
MANUAL TRANSAXLE (M5GF2)
DTC P1728 EMC-OPEN/SHORT TO BATTERY
COMPONENT LOCATION
EB2DAF9D
SCMMT6220L
GENERAL DESCRIPTION
E6AC1A4E
Vehicle uses 2WD(2 wheel drive) for driving at normal speed, but sometimes it uses 4WD (4 wheel drive) accordign to
driving condition.
(cornering or acceleration)
EMC(Electric Magnetic Clutch) distributes proper torque to front wheel by controling amount of current inside EMC coil.
That time power pressing the multi plate clutch by apply cam is changed by a rate of EMC duty. after multi plate clutch
start slip the force for acceletion at front/rear wheel is controlled at a range of 100:0 ~ 50 : 50.
ITM system has 4WD-LOCK function that can make driving force to 50:50 by compulsion according to driver’s intention.
1. COIL
2. ROTOR
3. PRIMARY CLUTCH
4. AFLY CAM
5. SECONDARY CLUTCH
SCMMT6221L
DTC DESCRIPTION
ECD9BB2F
This DTC code is related to the EMC and is set If control harness has an open or short to battery source.
If failure is detected TCCU prohibits the ITM control and vehicle is controlled with 2WD by intercepting EMC current.
TRANSFER CASE ASSEMBLY
MT -49
DTC DETECTING CONDITION
EFE07CFD
Item
Detecting Condition
Possible Cause
DTC Strategy
• Short/ Open to Battery
Enable Conditions
• Ignition cycle required
Threshold Value
• 25 occurrences in a row mature
Diagnostic Time
• 1 sec
MIL on condition
• 0.5 Sec
Fail Safe
• EMC Error will turn ITM off. The ECU will not
send current to the clutch coil
• Power supply malfunction
• EMC,TCCU connector
looseness and poor terminal
to wire connection
• EMC circuit open or short
to battery
• Faulty EMC motor
• Faulty TCCU
SIGNAL WAVEFORM & DATA
E1DC70C7
FIG.1)
FIG.2)
FIG.1) EMC Signal : Idling .
FIG.2) EMC Signal : Throttle Valve Open .
SCMMT6222L
TERMINAL AND CONNECTOR INSPECTION
E4F1CEBD
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?
YES
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Go to " EMC Signal Inspection " procedure.
MT -50
MANUAL TRANSAXLE (M5GF2)
EMC SIGNAL INSPECTION
E5D2F7F5
1.
Ignition ON, Engine : ON.
2.
TCCU, EMC connector : Connect.
3.
Monitor signal waveform between terminal 1 of EMC harness connector and chassis ground.
4.
Shift to N Range.
Specification : Signal Waveform & Data
F09
2
1
2.EMC Ground
SCMMT6223L
CAUTION
The above value is only for reference.
The actual value may differ from it according to various engine condition.
5.
Is EMC Signal display near the specified value?
YES
▶ Fault is intermittent caused by poor contact in the sensor’s and/or TCCU’s connector or was repaired and TCCU
memory was not cleared.Thoroughly check connectors for looseness, poor connection, bending, corrosion, contam-
ination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair"
procedure.
NO
▶ Go to " EMC wiring battery short Inspection " procedure.
EMC WIRING BATTERY SHORT INSPECTION
EB741C81
1.
IG "OFF" & ENG "OFF".
2.
Electric Magnet Valve Clutch,TCCU connector : Disconnect.
3.
IG "ON.
4.
Measure voltage between terminal 1 of EMC harness connector and chassis ground.
Specification : 0 V
TRANSFER CASE ASSEMBLY
MT -51
F09
2
1
v
2.EMC Ground
SCMMT6224L
CAUTION
The above value is only for reference.
The actual value may differ from it according to various engine condition.
5.
Is voltage display near the specified value?
YES
▶ Go to " EMC harness open Inspection " procedure.
NO
▶ Check for short to battery in EMC harness.
▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
EMC HARNESS OPEN INSPECTION
E03FBE34
1.
Ignition OFF, Engine "OFF".
2.
Electric Magnet Valve Clutch, TCCU connector : Disconnect.
3.
Measure resistance between terminal 1 or 2 of Electric Magnet Valve Clutch harness connector and terminal 26 or
13 of TCCU harness connector.
Specification : 1Ω below
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