Pinpoint Test B : All Auxiliary Switch On Indicators Are Inoperative: Notes
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Customer Access for schematic and connector information.
Normal Operation and Fault Conditions
The upfitter switch indicators have a unique ground circuit. If an upfitter device operates, but the indicator does not illuminate, then the switch or ground is bad. REFER to: Auxiliary Switches .
Possible Sources
- Upfitter (auxiliary) switch assembly
- Wiring, terminals or connectors