Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 2012 >> Grand Cherokee Laredo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Communication - Non-DTC Based Diagnostics) >> Diagnosis And Testing >> No Response From TCM (Powertrain Control Module) - NGC >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(A209) FUSED B(+) CIRCUITS OPEN OR SHORTED
(Z903) GROUND CIRCUITS OPEN
(F202) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR SHORTED
(F1) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR SHORTED
(F342) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR SHORTED
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
POWERTRAIN CONTROL MODULE (PCM)