LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P3400 To U1403 >> U1113-Lost A/C Pressure Message >> Possible Causes

Possible Causes

Possible Causes 
CAN C BUS CIRCUIT OPEN OR SHORTED
FRONT CONTROL MODULE (FCM)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

The A/C Pressure Transducer signal is a direct input to the FCM. The FCM sends the PCM the A/C pressure signal over the CAN C bus.

scientia non olet · About LEMON Manuals