Question about 2002 Mercedes-Benz SLK-Class

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NO POWER TO OBDII DATA CONNECTOR

VEHICLE HAS NO POWER TO THE DATA LINK AND THE CHECK ENGINE LIGHT IS ON. IT FLASHES WITH 15 SECONDS AND DISPLAYS 8800. THE CAR HESITATES WHEN TAKING OFF AND THE IDLE IS ROUGH.

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  • Master
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The obd2 conector is feed by a fuse locate the fuse boxes and test all the fuses specially the courtesy light fuses and the lighter fuse

Posted on May 29, 2008

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Wheres obdii connector in a 1987 dodge dakota?


No, OBDII started on some 1995 vehicles and all vehicles 1996 and up. If I'm not mistaken you can try the following to try to get the codes from your vehicles computer, not sure if it works but try it: Here is what I need you to do:

1) with the engine OFF, cycle the key from off to on 3 times. On the 3rd time, leave it in the run position. (DO NOT CRANK or START ENGINE)

2) The check engine light should begin to flash.

3) Count flashes. In this year, trouble codes were 2 digit numbers. Thus, the light will flash, pause, then flash again to give you the 2 digit trouble code. Count the number of flashes each time. Between codes, there will be a longer pause. When it finishes, the final code will be 55. Good Luck.

Oct 30, 2013 | Dodge Dakota Cars & Trucks

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Where is diagnostic port on a 1991 mazda 929


It hasnt got a OBDII but i seem to remember a special plug under the bonnet ,then i gave up and changed a vacumn pipe to a sensor and it run like a dream

Dec 19, 2012 | Mazda Cars & Trucks

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Where is the vsc switch on a 04 4runner?


If you suddenly have the "VSC TRAC" and "VSC OFF" lights in your dash, this post may help you fix the problem yourself. The information here applies to 4th gen 4Runners that use the ISO protocol rather than the newer CAN protocol for their OBDII interfaces to code readers, ECU programmers, hand-held testers, etc. The OBDII interface includes several different protocols (methods of digital communication) and they all use the same physical connector, though with some different pins. The connector is located at the bottom of the dash on the driver's side and in the 4Runner it's covered by a small black cap.

4Runners switched from ISO to CAN around 2005 though this information may also apply to newer 4Runners with some modification. That is, newer 4Runners may display trouble codes and reset sensor calibration values in response to the connection of different (than earlier 4Runners) pins together than the ones described below.

Several posters have discussed similar problems, described in several different threads. I'm reluctantly starting a new one, with a more specific title (including the exact name of the two trouble indicator lights), in the hope that searchers will more easily find a solution.

The specific behavior: On startup, the "VSC TRAC" and "VSC OFF" lights come on and stay on. The ABS light may or may not come on. On subsequent starts the lights will come on temporarily as usual (as a bulb check) and then go off. They come on again and stay on as soon as the 4Runner is moved. The "check engine" light does not come on. This behavior begins after the vehicle has been hooked to some sort of OBDII code reader or engine tester or data logger, etc. Though the lights are on, no standard OBDII problem codes are detected by a regular code reader.

Cause: The code reader or other OBDII device has attempted to communicate with the 4Runner using the CAN protocol (involving pin #14) and this has caused the 4Runner to erase the "zero point calibration" numbers in its memory. Without these numbers it can't get accurate information from the yaw rate and deceleration sensors (in the center console near the gearshift) and so it disables traction and stability control functions.

The fix: Perform the "zero point calibration" procedure as described in TSB BR001-04. This procedure can be performed without special equipment such as a hand-held tester or OBDII reader. You only need the equivalent of a jumper wire to short together two pins of the OBDII connector at the right time and the right number of times between switching the 4Runner on and off. More detail is included below, leveraged from my other posts.

Why this doesn't happen every time a code reader is used: The code readers usually use the pins and protocol of the OBDII connector in a specific sequence, trying first to establish communication with the vehicle using the oldest protocol. They then try the pins and protocol of newer protocol standards. Usually the code reader would be successful in its first try at establishing contact with the 4Runner using the ISO 9141-2 protocol, and there would be no problem. However these communications schemes are not foolproof and occasionally the ISO protocol attempt fails. Then the code reader tries newer protocols including CAN (controller area network). It's this CAN attempt, which toggles pin #14 (the CAN data pin) that accidentally tells the 4Runner to erase the existing zero point calibration data. Since the 4Runner (this vintage anyway) can't communicate by CAN protocol the tester re-tries the older protocols again and eventually succeeds in setting up communication by the right ISO protocol. But by then the calibration data has been erased.

The calibration, by the way, is simply a matter of telling the 4Runner VSC/TRAC computer "your yaw rate and deceleration rate are currently zero" and to save the associated values. Then the output from the sensors can be interpreted correctly.

Detail (may be helpful if you're going to do the calibration procedure yourself): The SST (special service tool #09843-18040) specified in the service manual appears to be essentially a Y-shaped test lead and is variously called a "jumper wire" or "diagnostic check wire." It's used in this case to repeatedly connect and disconnect the chassis ground (CG, pin #4) and Ts (pin #14) terminals of the OBDII connector (referred to as DLC3 in Toyota-speak). The connection/disconnection sequence and timing are described in the service manual and in several TSBs. OBDII connector diagram and pin descriptions are in TSB BR005-03.

Since the OBDII connector is at the lower edge of the dash and pointing down (right above your left foot when you're sitting in the driver's seat) it's rather tough to reach in and do the shorting to the appropriate terminals of the OBDII connector with a test lead. Especially since you're supposed to avoid moving or shaking the vehicle when you're doing this. BTW, the OBDII connector usually has a black snap-on cover over it to keep out grit, etc.

Therefore I took a couple of pieces of insulated wire about 24" long each and taped them alongside each other, and stripped both ends. To make the wire fit securely in the (female) terminals of the OBDII connector I soldered a 3/8" length of metal (cut from a heavy paper clip) to one end of each of the wires. I chose a pin size so that would fit securely in the female terminals of the OBDII connector but wouldn't distort them. I used some heat shrink tubing around the solder joint to reduce any chance of accidental shorting.

After plugging the two pins into the OBDII connector (with the other ends held apart) I was able to hold the other ends of the two wires in my hands and touch them together at the appropriate times to connect the pins of the OBDII connector. I had a helper in the passenger seat to read the instructions from the TSB to me in sequence.

This is not very hard to do, and one need only be careful. It's easier to do with the Toyota OBDII tester, of course, and would only take 5 minutes. You might be able to get your dealer to do it gratis, but you might also be charged some minimum labor hour rate.

BTW #1: Doing the sulfur TSB or others that require the replacement or reprogramming of the engine computer or the VSC computer will also require this calibration.

BTW #2: I verified that when the lights are on the VSC and traction control are indeed inoperative. ABS is working, though.

BTW #3: Shorting other pins (such as #13 Tc) at the right time can cause the appropriate dash indicators to blink in sequence to reveal trouble codes other than the OBDII ones. A generic OBDII code reader won't give you this data, and you need the service manual (physical or online) to make sense of it. I believe there is a specific code to tell you that the zero point calibration data has been lost, but I didn't look for it.

BTW #4: In the 4Runner of this vintage the OBDII connector pins populated are 4, 5, 7, 9, 13, 14, 15, 16

Dec 19, 2011 | 2004 Toyota 4Runner

1 Answer

How can I check the codes without a diagnostic computer?


1
Locate the 16-pin data link connector. Connect the jump wire to terminals 4 and 9 of the connector. Turn the key to the "On" position without starting the engine.
2
Watch the "Check Engine" light. This light will begin to flash in specific patterns to indicate a 1- or 2-digit Diagnostic Trouble Code. The flashes will be long for the first digit, short for the second digit and blank if the digit is 0.
3
Record all the codes given. The "Check Engine" light will display the codes in sequence and then keep repeating them in order. Refer to your repair manual to check for the meaning of the codes.

Jul 17, 2011 | 1994 Isuzu Rodeo

2 Answers

Does a 91 toyota camry have an outlet for a diagnostic code reader? It is a Can OBD2 diagnostic code reader


Hi, OBD2 didn't start until 1996, but you can extract your codes manually. You have to run a jumper in the data link connector under the hood. See procedure below. If you can tell me which engine you have, I may be able to provide the table of codes.


1982-95 MODELS All models except the 1MZ-FE engine is equipped with OBD I till 1995.

  1. Make sure the battery voltage is at least 11 volts.
  2. Make sure the throttle valve is fully closed.
  3. Place the gear shift lever in Neutral. Turn all accessories off.
  4. The engine should be at normal operating temperature.
  5. Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1).
  6. Turn the ignition switch ON , but do not start the engine. Read the diagnostic code by the counting the number of flashes of the malfunction indicator lamp.
  7. Codes will flash in numerical order. If no faults are stored, the lamp flashes continuously every 1 / 2 second. This is sometimes called the Normal or System Clear signal.
  8. After the diagnosis check, turn the ignition OFF and remove the jumper wire.
  9. Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.
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      Feb 22, 2011 | Toyota Camry Cars & Trucks

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      Need diagram for resetting diagnostic codes. In my manual under Emission and Engine control system the diagram doesn't match my car. 4.6L engine


      Diagram for resetting diagnostic codes??? If you are looking for the OBDII Data Link Connector, it is under the laft side of the dash. All OBDII Data Link connectors are the same size and shape on every vehicle sold in the United States since 1996. If you are attempting to reset failure codes without diagnosing and repairing the reason the code exists in the first place, it will only result in the code coming back again.

      Jan 29, 2011 | 2003 Mercury Grand Marquis

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      What button sequence to I press on the vic to get the cpu codes for the check engine light?


      Reading & Clearing Codes READING CODES (EXCEPT CADILLAC) Fig. 4: Example of a code 12 displayed on the check engine lamp 79222g25.gif
      Since the inception of electronic engine management systems on General Motors vehicles, there has been a variety of connectors provided to the technician for retrieving Diagnostic Trouble Codes (DTC)s. Additionally, there have been a number of different names given to these connectors over the years; Assembly Line Communication Link (ALCL), Assembly Line Diagnostic Link (ALDL), Data Link Connector (DLC). Actually when the system was initially introduced to the 49 states in 1979, early 1980, there was no connector used at all. On these early vehicles there was a green spade terminal taped to the ECM harness and connected to the diagnostic enable line at the computer. When this terminal was grounded with the key ON, the system would flash any stored diagnostic trouble codes. The introduction of the ALOL was found to be a much more convenient way of retrieving fault codes. This connector was located underneath the instrument panel on most GM vehicles, however on some models it will not be found there. On early Corvettes the ALOL is located underneath the ashtray, it can be found in the glove compartment of some early FWD Oldsmobiles, and between the seats in the Pontiac Fiero. The connector was first introduced as a square connector with four terminals, then progressed to a flat five terminal connector, and finally to what is still used in 1993, a 12 terminal double row connector. To access stored Diagnostic Trouble Codes (DTC) from the square connector, turn the ignition ON and identify the diagnostic enable terminal (usually a white wire with a black tracer) and ground it. The flat five terminal connector is identified from left to right as A, B, C, D, and E. There is a space between terminal D and E which permits a spade to be inserted for the purposes of diagnostics when the ignition key is ON. On this connector terminal D is the diagnostic enable line, and E is a ground. The 12 terminal double row connector has been continually expanded through the years as vehicles acquired more on-board electronic systems such as Anti-lock Brakes. Despite this the terminals used for engine code retrieval have remained the same. The 12 terminal connector is identified from right-to-left on the top row A-F, and on the bottom row from left-to-right, G-L. To access engine codes turn the ignition ON and insert a jumper between terminals A and B. Terminal A is a ground, and terminal B is the diagnostic request line. Stored trouble codes can be read through the flashing of the Check Engine Light or on later vehicles the Service Engine Soon lamp. Trouble codes are identified by the timed flash of the indicator light. When diagnostics are first entered the light will flash once, pause; then two quick flashes. This reads as DTC 12 which indicates that the diagnostic system is working. This code will flash indefinitely if there are no stored trouble codes. If codes are stored in memory, Code 12 will flash three times before the next code appears. Codes are displayed in the next highest numerical sequence. For example, Code 13 would be displayed next if it was stored in memory and would read as follow: flash, pause, flash, flash, flash, long pause, repeat twice. This sequence will continue until all codes have been displayed, and then start all over again with Code 12. CLEARING CODES (EXCEPT CADILLAC) Except Riviera, Toronado and Trofeo: To clear any Diagnostic Trouble Codes (DTC's) from the PCM memory, either to determine if the malfunction will occur again or because repair has been completed, power feed must be disconnected for at least 30 seconds. Depending on how the vehicle is equipped, the system power feed can be disconnected at the positive battery terminal pigtail, the inline fuse holder that originates at the positive connection at the battery, or the ECM/PCM fuse in the fuse block. The negative battery terminal may be disconnected but other on-board memory data such as preset radio tuning will also be lost. To prevent system damage, the ignition switch must be in the OFF position when disconnecting or reconnecting power. When using a Diagnostic Computer such as Tech 1, or equivalent scan tool to read the diagnostic trouble codes, clearing the codes is done in the same manner. On some systems, OTC's may be cleared through the Tech 1, or equivalent scan tool. On Riviera, Toronado and Trofeo, clearing codes is part of the dashboard display menu or diagnostic routine. Because of the amount of electronic equipment on these vehicles, clearing codes by disconnecting the battery is not recommended. Riviera, Toronado and Trofeo (Non-CRT/DID Vehicles) — Using The On-Board Diagnostic Display System: First turn the ignition to theON position. On Riviera depress the OFF and TEMP buttons on the ECCP at the same time and hold until all display segments light. This is known as the Segment Check. On Toronado and Trofeo follow the same procedure, however, depress the OFF and WARMER buttons on the ECOP instead. After diagnostics is entered, any OTC's stored in computer memory will be displayed. Codes may be stored for the PCM, BCM, PC or SIR systems. Following the display of OTC's, the first available system for testing will be displayed. For example, 'EC?' would be displayed on Riviera for EOM testing, while on Toronado and Trofeo the message 'ECM?' will appear. The message is more clear on these vehicles due to increased character space in the IPO display area.
      1. Depress the 'FAN UP' button on the ECCP until the message 'DATA EC?' appears on the display for Riviera, or 'ECM DATA?' is displayed on Toronado and Trofeo.
      2. Depress the 'FAN DOWN' button on the ECCP until the message 'CLR E CODE' appears on the display for Riviera, or 'ECM CLEAR CODES?' is displayed on Toronado and Trofeo.
      3. Depressing the 'FAN UP' button on the ECCP will result in the message 'E CODE CLR' or 'E NOT CLR' on Riviera, 'EOM CODES CLEAR' or 'ECM CODES NOT CLEAR' on Toronado and Trofeo. This message will appear for 3 seconds. After 3 seconds the display will automatically return to the next available test type for the selected system. It is a good idea to either cycle the ignition once or test drive the vehicle to ensure the code(s) do not reset. Toronado and Trofeo (CRT/DID Equipped) — Using The On-Board Diagnostic Display System: First turn the ignition switch to theON position. Depress the 'OFF' hard key and 'WARM' soft key on the CRT/DID at the same time and hold until all display segments light. This is the 'Segment Check.' During diagnostic operation, all information will be displayed on the Driver Information Center (DIC) located in the Instrument Panel Cluster (IPC). Because of the limited space available single letter identifiers are often used for each of the major computer systems. These are: E for ECM, B for 6CM, I for IPC and R for SIR. After diagnostics is entered, any OTC's stored in computer memory will be displayed. Codes may be stored for the PCM, BCM, PC or SIR systems. Following the display of OTC's, the first available system for testing will be displayed. This will be displayed as 'ECM?'.
      4. Depress the 'YES' soft key until the display reads 'ECM DATA?'.
      5. Depress the 'NO' soft key until the display reads 'ECM CLEAR CODES?'.
      6. Depressing the 'YES' soft key will result in either the message 'ECM CODES CLEAR' or 'ECM CODES NOT CLEAR' being displayed, indicating whether or not the codes were successfully cleared. This message will appear for 3 seconds. After 3 seconds the display will automatically return to the next available test type for the selected system. It is a good idea to either cycle the ignition once or test drive the vehicle to ensure the code(s) do not reset.

      Jul 10, 2010 | 1992 Oldsmobile Toronado

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      I have a 1988 jeep cherokee, if your are standing in front of the vehicle, on the left fhand side, there is a relay center. well right beside that realy center is two little white plastic boxes with yellow...


      Diagnostic Connector To read Diagnostic Trouble Codes (DTC's), the test connector for the electronic engine control system must be used. The test connector is more commonly referred to as the Data Link Connector (DLC). On all Jeep models through 1990, the DLC is a 6-pin and a 15-pin connector located under the hood on the right side of the engine compartment. On 1991–93 models, the DLC is located under the hood on the left side of the engine compartment near the powertrain control module. On 1994–98 vehicles, the DLC is located in the passenger compartment, under the driver side dashboard.

      Data Link Connector (DLC) location — Jeep models through 1990

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      Please don't forget to rate and let me know if this helped you.

      Greg

      Jul 11, 2009 | Jeep Grand Cherokee Cars & Trucks

      1 Answer

      Check Engine light flashing


      Pull the code(s) at the moment the Check Engine light is flashing. Purchase an OBDII scanner (Auto Zone, Car Quest, O'Riely's, etc.) Be ready when it happens... do not shut off the engine ... plug the OBDII scanned into the DLC (Data Link Connector) and retrieve the code(s) at the moment it happens. If you still don't retrieve any codes when this happens, you have a malfunctioning ECM (Engine Control Module). Before you replace it (if this actually happens - no codes and Check Engine light is flashing), Disconnect both battery cables and touch them together for 30 seconds. Reconnect them to the battery and drive vehicle to see if it happens again (could be junk/corruption in ECM memory banks). If it happens again, the ECM is malfunctioning. REASONING: Whenever the "Check Engine" light comes on, there is ALWAYS a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). If no codes are retrieved, there's only one cause - ECM MALFUNCTION!

      Apr 13, 2009 | 2001 Hyundai Elantra

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      1995 eagle summit "Check engine light"


      Hi

      I know on the Talon model, if you cycle the ignition switch ON OFF ON OFF ON within 5 seconds, then the power loss/check engine light will flash out the ALDL trouble codes with a 4 second pause in between each trouble code as follows:-

      lets say for instance trouble codes 23 and 45 were stored. They would be displayed like this:-

      lamp illuminates for 2 to 3 seconds as a bulb check then goes out

      lamp then flashes 2 times, pauses, then flashes 3 times

      4 second pause

      lamp flashes 4 times, pauses, then flashes 5 times.

      Worth a try?

      Regards

      Geordie

      Jun 12, 2008 | 1995 Eagle Summit

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