Question about 1997 Chevrolet Cavalier

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2000 Cavalier DLC wiring.

I have a 2000 Chevy Cavalier. What is the path for the 12V to pin 16 on the DLC? The connector is not in my Haynes Repair Manual diagrams. My code reader can't link and my multimeter says there is no voltage present with the key in any position.

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Check the CIG fuse it goes directly to pin 16. It also powers the cigarette lighter. That fuse should be in the I/P fuse box.

Posted on Jul 26, 2009

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Where is the diagnostic port located on a 2000 fiat marea


on a 99 2.0 model you will have 2 diagnostic ports. both of them will be the fiat 3 pin type.

to connect the 3 pin fiat connector to a 16 pin obd2 connector you need 4 lengths of wire. use 3 lengths of wire to connect the 3 pin connector to the obd connector. also use 1 length of wire for power to the obd connector.

on the 16 pin obd2 connector use the following pins
4- chassis ground (connect to ground on 3 pin connector, or any good chassis earth)
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My obd2 isn't getting power what I do?


Check Pin #16 on the Data Link Connector (DLC) for battery voltage. (See Diagram)

If there is no battery voltage present check the fuse marked "OBD II" in the engine compartment fuse block. It is a 10 Amp fuse. If the fuse is good, repair the circuit between the fuse and pin #16 at the DLC.
If battery voltage is present at Pin 16 at the DLC, check for ground at pin 4 on the DLC. If ground is not present, repair the ground circuit between the DLC and Ground G202 located at the left side of the dash.
HINT: the easiest way to check BOTH of these at the same time is to use paper clips plugged into pin #16 and Pin #4 and connect a light bulb between the two. If the light illuminates brightly, power and ground are both OK.
If no problem with power or ground is detected at the DLC, check the Owner's Manual for your code reader.

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98 oldsmobile 88 royale code 12 and 41 what could be the problem


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GM Bonneville/Eighty Eight/LeSabre 1986-1999
Reading Codes

Print


1987-97 VEHICLES EXCEPT 1997 MODELS WITH 16-PIN DLC

See Figures 1 and 2
Listings of the trouble for the various engine control system covered in this manual are located in this section. Remember that a code only points to the faulty circuit, NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that the components are faulty before replacing them, especially the expensive ones.


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Fig. Fig. 1: ALDL/DLC terminal identification for 1987-97 vehicles, except 1997 models with a 16-pin DLC
The Assembly Line Diagnostic Link (ALDL) or Data Link Connector (DLC) may be located under the dashboard, and is sometimes covered with a plastic cover labeled DIAGNOSTIC CONNECTOR.

  1. The diagnostic trouble codes can be read by grounding test terminal B . The terminal is most easily grounded by connecting it to terminal A (internal ECM ground). This is the terminal to the right of terminal B on the top row of the ALDL connector.
  2. Once the terminals have been connected, the ignition switch must be moved to the ON position with the engine not running.
  3. The Service Engine Soon or Check Engine light should be flashing. If it isn't, turn the ignition switch OFF and remove the jumper wire. Turn the ignition ON and confirm that the light is now on. If it is not, replace the bulb and try again. If the bulb still will not light, or if it does not flash with the test terminal grounded, the system should be diagnosed by an experienced driveability technician. If the light is OK, proceed as follows.
  4. The code(s) stored in memory may be read through counting the flashes of the dashboard warning lamp. The dash warning lamp should begin to flash Code 12. The code will display as one flash, a pause and two flashes. Code 12 is not a fault code. It is used as a system acknowledgment or handshake code; its presence indicates that the ECM can communicate as requested. Code 12 is used to begin every diagnostic sequence. Some vehicles also use Code 12 after all diagnostic codes have been sent.
  5. After Code 12 has been transmitted 3 times, the fault codes, if any, will each be transmitted 3 times. The codes are stored and transmitted in numeric order from lowest to highest.

The order of codes in the memory does not indicate the order of occurrence.
  1. If there are no codes stored, but a driveability or emissions problem is evident, the system should be diagnosed by an experienced driveability technician.
  2. If one or more codes are stored, record them. Refer to the applicable Diagnostic Code chart in this section.
  3. Switch the ignition OFF when finished with code retrieval or scan tool readings.

After making repairs, clear the trouble codes and operate the vehicle to see if it will reset, indicating further problems.

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Fig. Fig. 2: Engine diagnostic trouble codes - 1987-93 vehicles, and 1994 vehicles with a 12-pin DLC connector


197 VEHICLES WITH 16-PIN DLC AND ALL 1995-99 MODELS

See Figures 3 through 7


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Fig. Fig. 3: DLC terminal identification for 1994 vehicles with a 16-pin DLC, as well as all 1995-99 models
On 1994-95 3.4L and 3.8L engines, and all 1996 models, an OBD-II compliant scan tool must be used to retrieve the trouble codes. Follow the scan tool manufacturer's instructions on how to connect the scan tool to the vehicle and how to retrieve the codes.


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Fig. Fig. 4: Engine diagnostic trouble codes (1 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


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Fig. Fig. 5: Engine diagnostic trouble codes (2 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


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Fig. Fig. 6: Engine diagnostic trouble codes (3 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


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Fig. Fig. 7: Engine diagnostic trouble codes (4 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles

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I have a 2001 chevy cavalier. The daylight running lights don't work, the light flickers a few times and then the service light comes on. None of the back brake lights work and none of the back turn...


Just fixed one, check the 16 pin connector under the battery. This one was destroyed from battery acid leaking down over it. It provides current for drl and headlights. It's accessible by removing the battery and the air filter housing. GM wants to sell you a wiring harness for 700. Got a used connector from a salvage yard for 15 bucks.

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I need to know how to manually retrieve dtc codes without a scanner.What are the steps of this procedure.I have a 1995 chevy cavalier 2.2 l with a check engine light on.The pin terminal has 16 pins.


This info is from the tech manual.....because you have a 16-pin DTC connector, you have the OBD II system in your car. This is cut and pasted info from the tech manual:

Fig. 2: A Tech 1® , or equivalent scan tool must be used to retrieve codes from 1996–00 models with the 16-pin DLC connector


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If you look on your doorjamb and read the sticker, it will tell you the year of your car...and if it was manufactured AFTER a certain month, then you have the 96 model...and from what you are saying, you have a 96 model because it has the 16-pin connector and not the 12-pin connector that the 95 and earlier had.

Reading Codes OBD-I SYSTEMS
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Jul 27, 2009 | Chevrolet Cavalier Cars & Trucks

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