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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Electronic Control Modules - Electrical Diagnostics) >> Electronic Control Modules - Electrical Diagnostics >> DTC Troubleshooting >> *No Response From TCM - Nag1/Diesel >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2008 Jeep Commander. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(Z904) GROUND CIRCUIT OPEN
(F946) TRANSMISSION RELAY OUTPUT CIRCUIT OPEN OR SHORT
(D223) SCI TRANSMIT CIRCUIT SHORTED TO VOLTAGE
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
TRANSMISSION CONTROL MODULE
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