Pinpoint Test Ab : U3003:16: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Wiring Diagram 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 below 8 volts a DTC sets.
RHVAC Control Module DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | Sets in the RHVAC control module if it detects battery voltage below 8 volts on the voltage supply circuit for 2.5 seconds or longer. |
Possible Sources
- Wiring, terminals or connectors
- High circuit resistance
- Charging system concern
- RHVAC control module