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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 599 (DTCS U0208 To U0241, System Tests, Symptom Test & Schematic And Diagrams) >> Diagnosis And Testing >> *A/C Heater Control Will Not Enter Diagnostic Mode (MTC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
OBJECT HOLDING A/C MODE SWITCH/EBL MODE SWITCH IN A PUSHED POSITION
SUBSTANCE CAUSING A/C MODE SWITCH/EBL MODE SWITCH TO GET STUCK IN A PUSHED POSITION
(C41) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO VOLTAGE
(C41) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO (C121) SENSOR GROUND CIRCUIT
(C41) BLOWER SWITCH POSITION SIGNAL CIRCUIT SHORTED TO GROUND
(C41) BLOWER SWITCH POSITION SIGNAL CIRCUIT OPEN
A/C STATUS INDICATOR/EBL STATUS INDICATOR INOPERATIVE
A/C HEATER CONTROL
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