Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2004ECONOLINE E150, VAN CARGO, 4.6 WREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 316 (ENTERTAINMENT SYSTEM)DIAGNOSIS AND TESTINGENTERTAINMENT SYSTEMCONNECTOR CIRCUIT REFERENCEAUDIO UNIT C240A
2004 Ford Econoline E150, Van Cargo, 4.6 W
Audio Unit C240a
2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION 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
| Pin Number(s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 | 797 (LG/VT) B+ battery feed at all times | Greater than 10 volts between the audio unit and ground. |
| 2 | 687 (GY/YE) B+ battery feed with the key in the ON and ACC positions | Greater than 10 volts between the audio unit and ground with the key in the ON or ACC positions. |
| 8 | 804 (OG/LG) LF speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 9 (except base audio) | 800 (GY/LB) LR speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 9(base audio) | 1726 (GY/LB) LR speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 10 (except base audio) | 802 (OG/RD) RR speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 10 (base audio) | 1781 (OG/RD) RR speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 11 | 805 (WH/LG) RF speaker output | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 12 | 811 (DG/OG) RF speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 13 | 694 (BK/LG) audio unit ground | Less than 5 ohms between the audio unit and ground. |
| 15 | 1000 (RD/BK) B+ power feed START position only | Greater than 10 volts with key in START position. |
| 18 | 595 (LB/RD) steering wheel audio controls reference signal | Less than 5 ohms between the audio unit and the steering wheel control switch. Greater than 10,000 ohms between the audio unit and ground. |
| 21 | 813 (LB/WH) LF speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 22 (except base audio) | 801 (TN/YE) LR speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 22 (base audio) | 1725 (TN/YE) LR speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 23 (except base audio) | 803 (BN/PK) RR speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
| 23 (base audio) | 1780 (BN/PK) RR speaker return | Less than 5 ohms between the audio unit and the speaker and greater than 10,000 ohms between the audio unit and ground. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.