Poor Engine Power, Hyundai Tiburon/Coupe

Model:Tiburon/Coupe	Model year: 2003-4	Mileage:28414
Displacement: 2000cc	Fuel :Gasoline	T/A Auto:
C code:improper Tightening	N code: Impossible to Start(hold to 3rd Gear.	System main harness

1) Condition:

1. Automatic Transaxle 3rd gear hold and poor Engine power

2)Cause:

1. Poor ground contact of the ATM control relay.

3)Diagnosis:

• Scan tool check.
  =Diagnostic Trouble Code.

DTC	Diagnostic Item
P1723	ATM control relay open/short circuit to ground.

• Inspect the parts of Engine control relay.
  =Inspect the resistance of the coil:85 ohms (normal)
  =Inspect the contact point of the ATM control relay Terminal (normal).
• Inspect the power source and the ground line inputted to control relay using test lamp and multi meter.
  =Measure the voltage inputted to C37 connector # 1 pin.
  =12.3 V (Normal)
  =Inspect the c37 connector #2 pin ground line using test lamp.
  =The test lamp is not Turn “ON'”: Abnormal.
• Check for open circuit of wire C37 connector #2 pin to 18 ground point using ohm meter- 0 ohms(Normal)
• Inspect the G18 ground point.

4 Repair Guide:

• Repaint the wiring ground terminal.
• more study