Hyundai Santa Fe (2006 year). Manual — part 43
AT -124
AUTOMATIC TRANSAXLE (F4A51)
DTC P0750 SHIFT CONTROL SOLENOID VALVE A CIRCUIT MALFUNCTION
COMPONENT LOCATION
EB49F3FD
Refer to DTC P0743.
GENERAL DESCRIPTION
EEC6AFAA
The Automatic transmission changes the gear position of the transmission by utilizing a combination of clutches and
brakes, which are controlled by solenoid valves. This automatic transmission consists of a: LR (Low and Reverse Brake),
2ND (2nd Brake), UD (Under Drive Clutch), OD (Over Drive Clutch), REV (Reverse Clutch), and RED (Reduction Brake,
only for 5 speed transmissions). The LR Brake is engaged in the 1st gear and reverse gear positions.
DTC DESCRIPTION
ECD36756
The TCM checks the Low and Reverse Control Signal by monitoring the feedback signal from the solenoid valve drive
circuit. If an unexpected signal is monitored (for example, high voltage is detected when low voltage is expected, or low
voltage is detected when high voltage is expected), the TCM judges that the Low and Reverse control solenoid circuit is
malfunctioning and sets this code.
DTC DETECTING CONDITION
E94E629F
Item
Detecting Condition
Possible cause
DTC Strategy
• Check voltage range
Enable Conditions
• 16V > Voltage Battery >11V
• In gear state(no gear shifting) 500msec is
passed from turn on the relay
• A/T Relay = ON
• Engine state = RUN
Threshold value
• Out of available voltage range
Diagnostic Time
• More than 2 seconds
Fail Safe
• Locked in 3rd gear.(Control relay off)
• Open or short in circuit
• Faulty LR SOLENOID
VALVE
• Faulty PCM/TCM
SPECIFICATION
E3EBEAB1
Refer to DTC P0743.
AUTOMATIC TRANSAXLE SYSTEM
AT -125
SIGNAL WAVEFORM
E2DCC546
FIG.1)
FIG.1) : "2nd" gear
EKBF117A
MONITOR SCANTOOL DATA
E220AD8E
1.
Connect scantool to data link connector(DLC).
2.
Engine "ON".
3.
Monitor the "LR SOL. VALVE" parameter on the scantool.
4.
Shift gear at each position.
AT -126
AUTOMATIC TRANSAXLE (F4A51)
FIG.1)
FIG.2)
FIG. 1) P,N
FIG. 2) "R"
FIG. 3) "D 1st" gear
FIG. 4) "2nd" gear
FIG. 5) "3rd" gear
FIG. 6) "4th" gear
FIG. 7) "5th" gear
FIG.3)
FIG.4)
FIG.5)
FIG.6)
FIG.7)
SCMAT6741L
AUTOMATIC TRANSAXLE SYSTEM
AT -127
5.
Does "LR SOLENOID DUTY " follow the reference data?
YES
▶ Fault is intermittent caused by poor contact in the sensor’s and/or TCM(PCM)’s connector or was repaired and
TCM(PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, cor-
rosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of vehicle
repair" procedure.
NO
▶ Go to "Terminal&connector inspection " procedure.
TERMINAL & CONNECTOR INSPECTION
ECA3B290
Refer to DTC P0743.
POWER SUPPLY CIRCUIT INSPECTION
EAC8F5C7
Refer to DTC P0743.
SIGNAL CIRCUIT INSPECTION
E63BEBD5
1.
Check signal circuit open inspection
1)
Ignition "OFF".
2)
Disconnect "A/T SOLENOID VALVE" connector and "PCM/TCM" connector.
3)
Measure resistance between terminal "11" of the ATM SOLENOID VALVE harness connector and terminal "22"
of the PCM/TCM harness connector.
Specification: approx. 0 Ω
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