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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 491 (Body Diagnostic Procedures) >> Diagnostic Information And Procedures >> Communication >> Symptom: *NO RESPONSE FROM PCM (PCM SCI ONLY) - NGC >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PCM POWERS AND GROUNDS

PCM SCI TRANSMIT CIRCUIT SHORTED TO VOLTAGE

PCM SCI RECEIVE CIRCUIT SHORTED TO VOLTAGE

PCM SCI CIRCUITS SHORTED TOGETHER

PCM SCI TRANSMIT CIRCUIT SHORTED TO GROUND

PCM SCI RECEIVE CIRCUIT SHORTED TO GROUND

PCM SCI RECEIVE CIRCUIT OPEN

PCM SCI TRANSMIT CIRCUIT OPEN

POWERTRAIN CONTROL MODULE

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