Question about 1997 Dodge Dakota

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Troubleshooting code PO753 ECM or PCM.

AUTO ZONE DID THE TEST ON MT 97 DODGE DAKOTA 4X4 AT/4X4 318
3-4 SHIFT SOLANOID RELAY CODITION. ECM HAS DECTECTED AN OPEN OR SHORTED CONDITION ON THE RELAY CIRCUIT. TOLD TO GO TO DEALERSHIP FOR PART NO. THEY SAY PCM IS PROBLEM. WHICH IS IT?????

LONESOMEDOG5@PEOPLEPC.COM
THANK YOU.

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  • LONESOMEDOG5 Oct 17, 2008

    OK I'M GOING TO SOUND LIKE A IDIOT BUT WHERE IS IT AT AND WHAT AM I LOOKING FOR.



    P.S. THIS IS THE MOST HONEST ANSWER I'VE HAD YET.



    LIKE THE VETTE.

  • Anonymous Mar 18, 2014

    ecm? pcm?

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  • Dodge Master
  • 68,970 Answers

It is more likely the solenoid, the PCM is very seldom the problem, about 3% of the time to be exact.

Posted on Oct 16, 2008

  • yadayada
    yadayada Oct 17, 2008

    The shift solenoids are in the trans attached to the valve body, the PCM is under the hood.

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Wont start2004 dodge grand caravan sxt code p0685 show on dash


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- ECM power relay harness is open or shorted
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Possible symptoms:
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My 2013 dodge avenger wont start. Im getting a p0688 ECM/PCM code. What should I do


P0688 (generic) = ECM/PCM Power Relay Sense Circuit /Open
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Check all the ECM fuses, if the fuses are OK try replacing the ASD (Auto Shut Down) relay.

Read more: http://www.autocodes.com/p0688_dodge.html#ixzz405J7vpq8

Possible causes:

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1 Answer

What does the code po753 refer to


Symptom:

P-0753 TRANS 3-4 SHIFT SOLENOID/TRANS RELAY CIRCUITS

When Monitored and Set Condition:

P-0753 TRANS 3-4 SHIFT SOLENOID/TRANS RELAY CIRCUITS

When Monitored: Continuously with the key on.

Set Condition: This code is set if the voltage detected on the 3-4 Shift Solenoid Control

Circuit at the PCM is different than the expected voltage.

POSSIBLE CAUSES

FUSED B(+) FEED TO THE TRANS CONTROL RELAY OPEN

3-4 SOLENOID WIRING HARNESS INTERMITTENT DEF

3-4 SOLENOID WIRING HARNESS OBSERVABLY DEF

SHIFT SOLENOID CONTROL CIRCUIT OPEN

SHIFT SOLENOID CONTROL CIRCUIT SHORT TO GROUND

SOLENOID AND HARNESS DEF (SOLENOID CONTROL CKT)

TRANSMISSION RELAY OUTPUT CIRCUIT OPEN

TRANSMISSION RELAY OUTPUT CIRCUIT SHORTED TO GND

PCM DEF (3-4 SOLENOID/TRANSMISSION)

PCM DEF (TRANS 3-4 SOL/TRANS RLY CKT)

POWERTRAIN CONTROL MODULE DEFECTIVE

POWERTRAIN CONTROL MODULE DEFECTIVE

POWERTRAIN CONTROL MODULE DEFECTIVE

SOLENOID AND HARNESS DEF (SOLENOID PACK CONN)

TEST COMPLETE
TRANSMISSION CONTROL RELAY DEFECTIVE

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1 Answer

I have a 2003 dodge dakota. 4.7l. I get codes p0685 and p0688. No start no spark. Relay is good. But voltage drops when using a voltage meter on one of the grounds in the pdc. Any live wire and that ground...


P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
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Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0685 DODGE Description Short or open in Auto Shutdown (ASD) relay circuit

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CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure
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DTC No. DTC Detection Condition Trouble Area
P0743
 ECM detects open in solenoid SL circuit 4 times when solenoid
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 ECM detects short in solenoid SL circuit 4 times when solenoid
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 Open or short in shift solenoid valve SL circuit
 Shift solenoid valve SL
ECM
Fail safe function
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