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Home >> Jeep >> 2011 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics - Nag1 Automatic Transmission) >> DTC Troubleshooting >> P0748-Modulator Pressure Solenoid Circuit >> Possible Causes
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Possible Causes

Possible Causes 
(T76) MODULATION PRESSURE SOLENOID CONTROL CIRCUIT OPEN
(T76) MODULATION PRESSURE SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
(T76) MODULATION PRESSURE SOLENOID CONTROL CIRCUIT SHORTED TO ANOTHER CIRCUIT
MODULATING PRESSURE CONTROL SOLENOID VALVE
TRANSMISSION CONTROL MODULE (TCM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .