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Home >> Chrysler >> 2004 >> Crossfire Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Electronic Control Modules >> Electronic Control Modules - Electrical Diagnostics >> Diagnosis And Testing >> *No Response From Powertrain Control Module >> Diagnostic Test >> 4. Sci Receive Circuit Open

4. Sci Receive Circuit Open

With the ignition off.

Disconnect the PCM C4 harness connector.

NOTE: Check connector - Clean/repair as necessary.

Measure the resistance of the PCM SCI Receive circuit from the PCM C4 harness connector to the DLC.

Fig 1: Measuring PCM SCI Receive Circuit Resistance From PCM C4 Harness Connector To DLC
G01837918Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 5.0 ohms? 

  1. Yes  >> Go to 5
  2. No  >> Repair the PCM SCI Receive circuit for an open.

    Perform POWERTRAIN VERIFICATION TEST - VER 2 in ENGINE - ELECTRICAL DIAGNOSTICS article.

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