Normal Operation
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation, the HVAC module is grounded through circuit 57 (BK). The HVAC module receives battery voltage through circuit 1566 (RD/YE) and ignition voltage through circuit 1812 (BN/WH).
- DTC B1676 Battery Voltage Out of Range - The module senses when voltage is less than 9 volts or greater than 16 volts.
This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors