Audio Unit C240a
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
AUDIO UNIT C240A CONNECTOR CIRCUIT REFERENCE
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 3 | 1417 (LG/RD) dimmable backlighting power supply | 0 volts with the headlamp switch in the OFF position. Greater than 10 volts with the instrument panel dimmer switch in the full illumination position and the headlamp switch in the PARK/ON position. |
| 4 | 1205 (BK) illumination ground | 0 volts, less than 5 ohms resistance between the audio unit and chassis ground. |