Engine Hesitation w/ Shock Shift on Low Speed

Model: Hyundai Centennial(LZ)	Year Model: 2006	Mileage: 112200km
Displacement: 3500cc	Fuel: Gasoline	T/A: Auto

Subject: Engine Hesitation – Ignition Coil

1) Trouble Condition:

1. Engine Hesitation w/ Shock Shift on Low Speed.

2) Trouble Cause:

1. Number 1 Ignition Coil Spark leaking Due to Cracked.

3) Trouble Diagnosis:

1. Scan tool Check = No trouble found.
2. Inspect the engine condition with spark plug cable and coil removed one by one.
   (In engine starting condition).
   = Engine does not change when # 2 Cylinder is removed.
3. Inspect wave form using Scan tool.
   = Abnormal wave form in # 2 cylinder.
4. Check the spark plug cable and ignition coil.
   = Abnormal Condition # 1 coil cracked and the spark indicated that Spark is leaking.
   = After replacing the ignition coil, the engine operates normaly.

4) Trouble Repair Guide:

• Replace the Defective Ignition coil.

Field Case Study,Hyundai Sonata(FL)=ATM 3rd GEAR Hold

Model: Sonata (FL)	Year Model: 2009	mileage:40000km
Displacement: 2400 cc	Fuel: Gasoline	T/A: Auto
N code: Impossible to Shift	C code: Poor Contact & Short,Open Circuit	System: Fuse & Relay Information

Subject: ATM 3rd Gear Hold = ATM Control Relay

1) Trouble Condition:

1. Automatic Transaxle 3rd gear Hold During Driving.

2) Trouble Cause:

1. Inoperative ATM control relay due to poor wiring Ground.

3) Trouble Diagnosis:

1. Scan tool check =Diagnostic Trouble Code.
   

DTC	Diagnostic Item
P1723	ATM control relay open

    = Inspect the current data.
    = AT control Volt 0.00V.

1. Inspect A/T control relay.
   = Calculate a resistance value of A/T relay coil:95 ohms = Normal
   = Check contact piont after removing A/T relay cover: Normal.
   = Inspect power source and ground condition using test lamp and multimeter.
   = # 1 terminal: 12Volt
   = # 4 terminal: the power is supplied for about 3.6 seconds the Cut oof when IG ket is turned “ON”
   = #2 Ground does not opperate
2. Check the wire from the C48 connector tpo G14 ground point using multi meter: 0 ohms ( Normal)
3. Inspect G 14 Ground point: Poor volt for tightening ground point.
   
   =Normal Condition After After Retightening the Bolt.

Hyundai Santa Fe Field Trouble,Intermittent RPM Rising

Auto Learning/Field Case Study =Hyundai Cars Trouble Study ,this site Gives you an Idea about some problem occurred in Hyundai Cars.

Subject:Intermittent RPM Rising = APS(Acceleration Position Sensor)

Model: Santa Fe	Year Model: 2006	Mileage: 80125km
Displacement: 2000cc	Fuel: Diesel	T/A: Auto
N code: Rough Idling	C code: Poor Contact & Short Open Circuit	System: Diesel Control System

1) Trouble Condition:

1. Intermittently RPM increases(750—>1,3ooRpm) While Braking.

2) Trouble Cause:

• APS(Acceleration Position Sensor) malfunction.

3) Trouble Diagnosis:

• The APS signal is 899mV at Idle condition.
  
  = Specification – 0.6—0.75 Volt=
  
• Check the power which inputted to APS sensor, Ground line,signal power – Normal.
  
  =Specification=
  
  1) Sensor Power: 4.5 – 5.5 Volt(Disconnect the Connector)
  2)Sensor Ground : 0 Volt.
  3)Sensor signal: Idling 0.6-- 0.75 Volt, Full throttle 3.6 – 4.6 Volt.
• Inspect the terminal APS connector= Normal.
• Supply Power source(0.6V) to APS signal line using simulation mode in GDS(Global Diagnostic System)
  = Normal operation of Engine.
  = Replace the APS.
  = After replacing the APS, the sensor data and all system operate normally

4) Trouble Repair Guide:

1. Replace the Acceleration Position Sensor.

Hyundai Field Trouble,Azera Hard Starting

This is a trouble from Azera 2009 model,any time if this problem occurred compulsory you have to change.and try to think, and try your best to fixed even you have no Idea about technical,like me I have no background about computer but thank God because I have some friend who teach me,so you can also my friend.

Model: Azera (TG)	Year Model: 2009	Mileage: 40198km
Displacement: 3300cc	Fuel: Gasoline	T/A :Auto
N code: Hard Starting	C code: Broken, Split ,Torn	System: Fuel Delivery System

Subject:Engine Hard Starting – Fuel pump

1) Trouble Condition:

1. Intermittent Hard Starting
2. Engine Stalling for 3 Seconds after starting the Engine.

2) Trouble Cause:

• The fuel supply hose in the fuel pump has been torn.

3) Trouble Diagnosis:

1. Scan tool check = No trouble found.
2. Check the Ignition coil Spark operation = Normal.
3. Measure the fuel pressure using the fuel pressure gauge = 1.5 kg/cm2(Abnormal).
   
   Specification = 4.5 kg/cm
   
4. Visually inspect after removing the fuel pump in the tank.
   = The fuel pump hose has been torn.

4) Trouble Repair Guide

1. Replace fuel pump hose.

Hyundai Trouble,Elantra(HD)ATM Slipping at 3rd & 4rth gear,shock on down shifting.

(note some problem from your auto may occurred due to misused on driving so as a result some parts inside gear burnt and and broken)

Model: Elantra (HD)	Year model: 2009	Mileage:53265km
Displacement: 2000cc	Fuel: Gasoline	T/A Auto
N code: Clutch Slipping	C code: clogged oil passages	System: Automatic transaxle control system

Subject: ATM Slipping on 3rd & 4rth gear, Shock on down shiftiing.

1) Trouble Condition:

1. ATM Slipping on 3rd & 4rth gear.
2. Shock occurred in down shifting.

2) Trouble Cause:

1. malfunctioning valve body.
2. burnt clutch.

3) Trouble Diagnosis:

1. Scan tool check = No trouble found.
2. Road test to clarify the problem = problem occurs

4) Trouble Repair Guide:

1. pull down automatic transmission and check defective parts.
   
   Replace Parts
   = seal kit and silicon
   =valve body assembly
   =A/T filter
   =low and reverse clutch
   =2nd brake clutch
   =one way clutch
2. MORE STUDY
   

Hyundai Matrix,Field Case Trouble,Engine Suddenly Cut Off During Driving

Model: Matrix	Year Model: 2008	mileage: 40243km
Displacement: 1600cc	Fuel: Gasoline	T/A Auto
N code: Engine Cut Off	C code: Broken,split,torn	System: Fuel Delivery System

Trouble Subject:Engine Suddenly Cut Off During Driving = Fuel Pump

1) Field Case Trouble Condition:

1. Engine Suddenly Cut OFF During Driving.
2. After 20 km on Driving fuel smell comes then suddenly engine cut off.

2) Field Case Trouble Cause:

1. The fuel cut valve in the fuel tank has been stuck up.

3) Field Case Trouble Diagnosis:

1. Scan tool check = No trouble found
2. Check Current Data = Ok
3. Actuation test for the fuel pump = Ok
4. Visual inspection underneath for indication of fuel leaking = fuel canister there is an indication of fuel leakage.
5. Pull down fuel tank fuel canister.
6. pull out and check fuel cut valve
   = stuck up valve.

4) Field Case Trouble Repair Guide:

• Replace Fuel Canister and Fuel Cut Velve. 

Hyundai Getz(TB) Impossible to Shift ATM(3rd Hold)=pulse Generator B

Model: Getz	Year model: 2004	Mileage:78524km
Displacement: 1500cc	Fuel: Gasoline	T/A :Auto
N code:Impossible to shift(3rd hold)	C code: Flaw in material	System: Automatic trans. Control System

Subject: Impossible to shift ATM hold to 3rd = pulse Generator

1)  Trouble Condition:

1. Impossible to shift auto transmission(3rd hold).
2. Shock occurence when shifting gear N—>D,N—>R.

2) Trouble Cause:

• Poor pulse Generator(B).

3) Trouble Diagnosis: 

1. Scan tool check
   = Diagnostic Trouble code.

DTC code

P0722

Pulse Generator B (output Speed Sensor)

• = Perform a driving test after erasing the DTC code.
• = The DTC code is Displayed again.

     2   Inspect the oil in Auto transmission – Normal.

         = Transaxle fluid: Genuine Diamond ATF SP-III

     3   Stall test = Normal .
          = Stall speed: 2200 – 2800 rpm
          = Place the selector lever in the “R” position.
     4   Inspect the resistance in pulse generator and wiring contact.

4) Trouble Repair Guide:

1. Normal current data G scan of pulse Generator of A & B
   = PG-A(Input speed)      1532 rpm
   = PG-B(output speed)     968 rpm
2. Pulse Generator circuit.
3. Measure the resistance of output sensor
   = Channel 1 prove (+): Input sensor C02 terminal 4 signal line.
   = Channel 1 prove (-): Input sensor C02 terminal 3 sensor ground.
   =Specification: 245 + or – 30 ohms(Standard 20*c

C02 Terminal.

1. Input speed sensor (+)
2. Input speed sensor (-)
3. Output speed sensor (+)
4. Output speed sensor (-)