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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Automatic Headlamp Leveling Module (AHLM) - Electrical Diagnostics >> DTC Troubleshooting >> B1683-Rear Headlamp Leveling Sensor Circuit High >> Possible Causes
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Possible Causes

Possible Causes 
(L963) HEADLAMP LEVELING SENSOR SIGNAL SHORTED TO VOLTAGE
(L961) HEADLAMP LEVELING SENSOR 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(L962) HEADLAMP LEVELING SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE
(L963) HEADLAMP LEVELING SENSOR SIGNAL SHORTED TO (L961) HEADLAMP LEVELING SENSOR RETURN 5 VOLT SUPPLY CIRCUIT
REAR HEADLAMP LEVELING SENSOR
AUTOMATIC HEADLAMP LEVELING MODULE (AHLM)
NOTE: Diagnose and repair any system voltage DTCs before continuing with this test.