Question about 2000 Hyundai Accent

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I have a 2002 Hyundai accent. Check engine light is on. dtc codes p1402 and p1403. How do I test the air pump motor and the power supply to it?

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Posted on Jan 02, 2017

mcalkins3
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SOURCE: CODE DTC HUNDAY ACCENT 2001

Hello there! Here is a break down of the majority of the codes you posted and an explanation.
First of al the P1402 + P1403+ P0441 are all connected.
P1402- DMTL Motor Circuit
P1403- DMTL Valve
P0441- Gross evaportive emissons leak (of the least concern of all codes)
P1402 +P1403 are both in connection with the Charcoal canister. Generally over fueling a vehicle cause these codes. Hyundai's are particular prone to this issue due to emissons control locations. Simply put a DTML is a sensor. There is 2 of these particular ones on your car. One mounted at the engine and one connected to the throttle body. Fuel more than likely has contaminated the charcoal canister. If only one of the codes were set i'd assume it was just a wiring issue. More than likely the canister and solonoid need to be replaced. Obviously checking the wiring should be done first. Corrison or a broken wire also could cause these codes to trip.
P1632- Transmission Temp Pull-Up Resistor issue. I am not a Hyundai Tech so I don't have allot of experiance with there transmisson codes. However the same code with same function is listed on the F-body site(GM). I would correct the other 3 and go from there. I assure you that poor engine performance would definately cause transmisson issues, especially with the shift points. Especially with a transmisson like yours that is totally electrically controlled. Please let me know if any of this makes more sense. If need be I can elborate more.

Posted on Sep 14, 2008

  • 34 Answers

SOURCE: p1402

I have had good luck in the past googleing the code with the year, make & model included in the search.

Posted on Aug 20, 2009

  • 736 Answers

SOURCE: error code p1403

p1403 is a problem with the DTML sensor ... thats associated with the charcoal canister ... that is often caused by putting too much gas in the tank (overfilling) ... gas gets into the charcoal canister and contaminates it .. you could also have a bad sensor .. there are two .. one on the throttle body the other on the engine .. sometimes the wiring going to these sensors gets corroded or damaged .. contamination in the canister may clear itself in time if you avoid overfilling ..

Posted on Mar 20, 2010

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What are the probable causes of DTCs P1402 and P1403?


Code 1402 is a problem with the DMTL motor and 1403 is the circuit for the valve.
It involves the fuel tank leak tester.

Faulty Diagnostic Module Tank Leakage (DMTL)
- Diagnostic Module Tank Leakage harness is open or shorted
- Diagnostic Module Tank Leakage circuit poor electrical connection
Read more: http://www.autocodes.com/p1403_hyundai.html#ixzz44VrYa4Tf

Mar 31, 2016 | 2002 Hyundai Accent

1 Answer

How can I change or test DM-TL?


code p 1402 refers to fuel tank leakage diagnostic module--motor malfunction===causes --fuel tank leakage motor diagnostic module motor
code p 1403 refers to the fuel tank diagnostic module ---valve malfunction
go to a service dealer and have the unit tested
it is possible that by replacing or cleaning the valve section , the problem will be fixed

Mar 31, 2016 | 2002 Hyundai Accent

1 Answer

Car sometimes wont start unless you spray starter fluid, just replaced filter. oem codes are p0734 and p1401


P0734 = 4th gear incorrect ratio (that's the torque converter 'lock-up' clutch - inside the converter).
P1401 = doesn't exist for 2002 Hyundai Accent's
P1401 exists for 2000 Accent = DM-TL Air Pump Motor Curent Draw is higher or lower than expected (normal is 17-36 mA). DM-TL = Diagnostic Module for Tank Leakage & is part of the Evaporative Emissions Control System.

These two DTC's are not associated/part of the Accent's Engine Managemenet System (EMS).
Best to have a qualified/certified Hyundai Service Technician properly diagnose this starting problem with your vehicle.

Aug 31, 2011 | 2002 Hyundai Accent

1 Answer

My car doesn't have any power, it starts and drives but will not go over 25mph any suggestions of what it could be? I was thinking maybe a vacuum leak or the mass air flow sensor ??? IDK please help....


Check Engine Light? When a 'check engine light' (MIL=Malfunction Indicator Lamp) is turned on, there is a DTC (Diagnostic Trouble Code) set/stored in the ECM/PCM (Engine Control Module/Powertrain Control Module). This code identifies which engine management system component/function experienced a malfunction. Once you pull/read this code, you may begin diagnosis.

Aug 24, 2011 | 2002 Hyundai Accent

3 Answers

Error code p1403


p1403 is a problem with the DTML sensor ... thats associated with the charcoal canister ... that is often caused by putting too much gas in the tank (overfilling) ... gas gets into the charcoal canister and contaminates it .. you could also have a bad sensor .. there are two .. one on the throttle body the other on the engine .. sometimes the wiring going to these sensors gets corroded or damaged .. contamination in the canister may clear itself in time if you avoid overfilling ..

Mar 19, 2010 | 2001 Hyundai Accent

1 Answer

My 2002 Hyundai Accent goes into 1 gear smoothly, jerks into 2nd and goes into 3rd gear smoothly. Then goes back down into 3rd and 2nd gears smoothly and jerks back into 1st.


CHECK ENGINE light??? Whenever the 'CHECK ENGINE' (Service Engine Soon) light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on.
You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE the problem and perhaps eventually fix the problem.

Oct 01, 2009 | 2002 Hyundai Accent

1 Answer

My 2000 Hyndai Accent would only accept fuel at a very slow rate. If you tried to hold the fuel nozzle at half way, the fuel pump would click off as if the vehicle was full. it would accept maybe 10-20...


P1402
Power Stage (DMTL Motor)

P1403
Power Stage (DMTL Valve)

The 2000 model year Accent adopts a new "pressurized" leak check system capable of detecting a 0.020" (0.5 mm) diameter leak (previous Hyundai systems detect a 0.040" [1mm] diameter leak using engine vacuum). The new system uses a Diagnostic Module for Tank Leakage (DM-TL) to close and pressurize the fuel evaporative emissions system. The DM-TL replaces the fuel tank pressure sensor and the canister close valve from previous systems. Other significant changes were made to the system logic, including several new diagnostic trouble codes. The diagnostic module (refer to photos on page 3) consists of a motorized air pump, a solenoid shuttle (sealing) valve, and a 0.020" (0.5 mm) diameter reference orifice. After the vehicle meets the self check requirements (see Self Check Requirements When Not Using The Hi-Scan Pro Section), the DM-TL activates to check for system leakage. The air pump and shuttle valve work on the command of the ECM. Motorized Air Pump - the pump pressurizes the evaporative emissions system producing a current draw that the ECM reads to determine pass/fail conditions. When the pump is switched 'ON', current draw is typically 17 - 36 mA. Solenoid Shuttle Valve - the shuttle (sealing) valve has two sealing sides (front and rear) that provide two functions: A. When the valve is "OFF" (no voltage aplied to valve), the front sealing surface directs air from the air pump (if it is "ON") through the 0.020" (0.5mm) diameter reference orifice. The rear sealing surface is openand provides an open path between the charcoal canister and freshair. B. When the valve is "ON" the front sealing surface is open directing air from the air pump into the evaporative emissions system. The rear sealing surface is closed, sealing off the evaporative emission system for the leak check. 0.020" (0.5 mm) Diameter Reference Orifice - the built-in reference orifice provides the ECM the current draw of the air pump motor for current ambient conditions (temperature,humidity etc.) to determine pass/fail conditions duringthe system leak check. 1fc9b8a.gif P1402 DM-TL Circuit Continuity Check (Pump Motor) - short circuited, or disconnected. P1403 DM-TL Circuit Continuity Check (Shuttle Valve) - short circuited, or disconnected. IMPORTANT NOTE!.. you have a fuel leak now. These codes are NOT a direct cause of that leak... they are a result.



2c775b4.gif It is highly recommended to use the Hyundai Hi-Scan Pro to activate the evaporative emission self check. Using theHi-Scan Pro will save time and provide more consistent results. Moreover, "road testing" of the evaporative emission system in a 2000 MY Accent is not practical (requiring up to a 4day time frame to verify a repair). The leakage self check can be found on the main menu after selecting Model and Year of the vehicle. For the 2000 Accent, the menu item is labeled "DM-TL Test". To familarize yourself with the operation of the self check, remove the fuel cap of a 2000 Accent that is operating properly and activate the self check (follow the instructions on the Hi-ScanPro screen). With the fuel cap removed, Diagnostic Trouble CodeP0455, or P0442 will register in the ECM memory after the test is finished. (NOTE: The "Check Engine" light will not illuminate because the self check has only been run once. However, the code will be stored in the ECM memory. The "Check Engine" light will illuminate if the ignition key is switched to off, and the main power relay shuts off, and then the self check is performeda second time.). Erase the code when finished, and securely replace the fuel cap. If no code appears, turn the ignition key to off until the main power relay shuts off and retry the process. If no code appears at this point, call the Hyundai Tech Line. 7. SYSTEM SELF CHECK REQUIREMENTS (WHEN NOT ACTIVATED BY HI-SCAN PRO) For verification of a repair, it is highly recommended to use the Hi-Scan Pro to activate the self check. The importance of using the Hi-Scan Pro can't be over-emphasized because of the different self check requirements for the 2000 Accent. Use of the Hi-Scan Pro bypasses all of the self check criteria described below, allowing the technician to perform the self check at anytime, regardless of the conditions. Under normal operating conditions, the leak check occurs almost immediately after the vehicle is shut off and items 1-8 have been achieved. The ECM"s prerequisite for this check areas follows:
  1. Vehicle must have cooled down (not driven) a minimum of 5 hours (typically overnight).
  2. Vehicle must have been driven 20 minutes or more.
  3. Engine "off" and ignition key "off".
  4. Vehicle"s fuel level must be between 15% - 85% full.
  5. Ambient temperature between 39ðF - 95ðF (4ð - 35ðC).
  6. Altitude lower than 8250 feet (2500 m).
  7. Battery Voltage between 11.5 - 14.5 volts.
  8. Activates every other time (every second time) after conditions 1-7 are met.
NOTE The leak check will occur regardless of fuel level when conditions 1-7 are met, if the ECM has stored a DTC for the fuellevel sensor (P0460; Fuel Level Sensor Rationality Check).

Jun 25, 2009 | Hyundai Accent Cars & Trucks

1 Answer

CODE DTC HUNDAY ACCENT 2001


Hello there! Here is a break down of the majority of the codes you posted and an explanation.
First of al the P1402 + P1403+ P0441 are all connected.
P1402- DMTL Motor Circuit
P1403- DMTL Valve
P0441- Gross evaportive emissons leak (of the least concern of all codes)
P1402 +P1403 are both in connection with the Charcoal canister. Generally over fueling a vehicle cause these codes. Hyundai's are particular prone to this issue due to emissons control locations. Simply put a DTML is a sensor. There is 2 of these particular ones on your car. One mounted at the engine and one connected to the throttle body. Fuel more than likely has contaminated the charcoal canister. If only one of the codes were set i'd assume it was just a wiring issue. More than likely the canister and solonoid need to be replaced. Obviously checking the wiring should be done first. Corrison or a broken wire also could cause these codes to trip.
P1632- Transmission Temp Pull-Up Resistor issue. I am not a Hyundai Tech so I don't have allot of experiance with there transmisson codes. However the same code with same function is listed on the F-body site(GM). I would correct the other 3 and go from there. I assure you that poor engine performance would definately cause transmisson issues, especially with the shift points. Especially with a transmisson like yours that is totally electrically controlled. Please let me know if any of this makes more sense. If need be I can elborate more.

Sep 14, 2008 | 2000 Hyundai Accent

1 Answer

2000 Hyundai Accent


00-30-001 2000 ACCENT DMTL DIAGNOSIS: DTC CODES P1401, P1402 AND P1403

p1402 - dm-tl air pump motor is shorted or disconnected.

2000 model year accent is equipped with a new enhanced evaporative emission system. this new system is capable of measuring leaks as small as 0.020" diameter. the new system pressurizesthe evaporative emission system with a diagnostic module for tank leakage (dm-tl), while the previous model's system appliedengine vacuum through the purge valve to detect system leaks.

service information
vehicles that have the check engine light illuminated and have dtc p1401, p1402 and p1403 stored in the ecm should have their electrical systems diagnosed related to the appropriate dtc. these codes are not related in any way to an evaporative emission system leak. the conditions that set the diagnostic codes areas follows:
p1401 - dm-tl air pump motor current draw is higher or lower than expected (normal = 17-36 ma).
p1402 - dm-tl air pump motor is shorted or disconnected.
p1403 - dm-tl changeover valve is shorted or disconnected

Jun 04, 2008 | 2000 Hyundai Accent

1 Answer

Computer codes


p1402 - dm-tl air pump motor is shorted or disconnected.

2000 model year accent is equipped with a new enhanced evaporative emission system. this new system is capable of measuring leaks as small as 0.020" diameter. the new system pressurizesthe evaporative emission system with a diagnostic module for tank leakage (dm-tl), while the previous model's system appliedengine vacuum through the purge valve to detect system leaks.

service information
vehicles that have the check engine light illuminated and have dtc p1401, p1402 and p1403 stored in the ecm should have their electrical systems diagnosed related to the appropriate dtc. these codes are not related in any way to an evaporative emission system leak. the conditions that set the diagnostic codes areas follows:
p1401 - dm-tl air pump motor current draw is higher or lower than expected (normal = 17-36 ma).
p1402 - dm-tl air pump motor is shorted or disconnected.
p1403 - dm-tl changeover valve is shorted or disconnected

perform the suggested repair
1. inspect for water in the dmtl by removing the 90° air inlet elbow and looking into the air chamber. if water or corrosion is present, replace the dm-tl p/n 31440-25500; air filterp/n 31453-25500; and pipe assembly p/n 31454-25500if corrosion is in the pipe. see detailed instructions on page3 for air filter replacement.
2. inspect for underbody coating sprayed into connector m52 at dm-tl. if underbody coating is present on the male or female connector, spray with electrical contact cleaner to remove the undercoating.

air filter (dm-tl) replacement instructions
  1. disconnect the 90° elbow from the top of the dmtl and insert a clean rag into either the elbow or thedmtl inlet connector.
  2. disconnect the dmtl electrical connector.
    1. disconnect the 2 hoses at the front of the canister (caution: silicone hoses tear/puncture easily).
    2. remove canister assembly and dm-tl as a unit (3 mounting nuts).
    3. disconnect the 2 hoses from the metal transfer pipes.
    4. remove the canister, air filter, and metal tube assembly from the canister protector by removing the 3 mounting nuts.
    5. disconnect the hose at the air filter.
    6. remove the air filter mounting nut and remove the air filter.
    7. install a new air filter.
    8. reassemble in reverse order.

Jun 04, 2008 | 2000 Hyundai Accent

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