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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Powertrain Diagnostic Procedures - Diesel) >> Diagnostic Information And Procedures >> Communication - Symptoms >> Symptom: *NO RESPONSE FROM ECM (DIESEL ONLY) >> 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 ECM POWERS AND GROUNDS

FRONT CONTROL MODULE

SCI TRANSMIT CIRCUIT SHORTED TO VOLTAGE

TRANSMISSION CONTROL MODULE

ANTILOCK BRAKE MODULE

SCI TRANSMIT CIRCUIT SHORTED TO GROUND

SCI TRANSMIT CIRCUIT OPEN

ENGINE CONTROL MODULE

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