LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2021 >> Expedition MAX Platinum, RWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System - General Information (2 Of 2) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) >> Pinpoint Test(s) >> Pinpoint Test Z: U3003:17 >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test Z: U3003:17: Notes

U3003:17 

Refer to Auxiliary Climate Control for schematic and connector information.

Normal Operation and Fault Conditions 

The RHVAC control module requires voltage between 9 and 15 volts to operate normally. If the voltage is above 16 volts a DTC sets.

RHVAC Control Module DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets in the RHVAC control module if it detects battery voltage above 16 volts on the voltage supply circuit for 2.5 seconds or longer.

Possible Sources