Question about Jeep Liberty

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Vehicle Diagnostic Code Reader dose not work

Code read will not link with my tuck it is a 2006 nothing wrong other wise all fuse look to be intact

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  • Aaron beojekian
    Aaron beojekian Apr 01, 2014

    Cig lighter works, use a diffrent scanner and still will not link both scanners diffrent manfactures say link error, I have cleaned plug with a soft brush and check fuse it is intacted

  • wolf
    wolf Apr 02, 2014

    1. Check the voltage on each CAN C bus wire at the data link connector. Each circuit should have about 2.5 volts. 2. If not, start unplugging modules one at a time. 3. If unplugging modules one at a time does not change the voltage on the CAN C bus wires, check the wiring harness for corrosion in connectors and wiring. 4. The problem can be found by temporarily running two new bus wires from the PCM to the Body Control Module (BCM). If the bus voltage is normal, keep cutting the wires near each module and connect another module to isolate where in the harness the problem may be.

  • Aaron beojekian
    Aaron beojekian Apr 19, 2014

    OK finally fixed bought a new code reader and it read my jeep my old one and the autozone reader both failed but the new reader work first time. dont understand why but it work that all that matter at thjis point.



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Posted on Mar 28, 2014

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  • wolf
    wolf Apr 02, 2014

    the best advice is to find repair shop with full size scanner and use Chrysler adapter. test the power and grownd on you OBD2 connector . next is more difficult. you need wiring diagram to trase the connection from computer to OBD2 connection. I will send you diagram .first I need year and engine size .

  • Aaron beojekian
    Aaron beojekian Apr 04, 2014

    3.7 v-6

  • Aaron beojekian
    Aaron beojekian Apr 04, 2014

    thank you for all the help



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SOURCE: can't read codes with code reader

you most likley have a blown fuse. the fuse for the connector and cig lighter are usually on the same circuit . if you have a owner manuel check and see which fuse is for the obd/cig lighter. if you dont have a manuel then check every fuse in the box and see if you find a blown one. the plug whare the scanner connects is what powers the scanner so if you cant find a blown fuse then you know youre not getting power to the plug for some reason.

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SOURCE: How to read codes on a 1994 Chevy K Blazer without a code reader?

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SOURCE: does a 91 toyota camry

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.

      Posted on Feb 22, 2011

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