Battery dying very quickly!
Amperage Test
Key out, Courtesy Lighting fuse pulled = 0.18amps (looks normal)
Key out, Courtesy Lighting fuse in = 0.33amps* (not good)

*This is what's killing my battery, I pulled all the plugs from the Steps! (no luck)

Any thoughts what could be drawing amps with the Courtesy Lighting off while the fuse is in?

 

Maybe the courtesy light timer/relay? I believe it is supposed to turn everything off after 10 minutes. Is your door ajar light lit up? Are your courtesy lights going off after the 10 minutes?

Do the same amp test once you know the timer has turned off.

 

Already did that which gives: Key out, Courtesy Lighting fuse in = 0.33amps* (not good)

With them on they are 6.5 sumtin!

 

BAJI26,

I have the schematics for the 2002, so hopefully it is close to what the 2000 had.

What is the fuse number and amp rating for it so I can find it on the schematic?

Looks like 2 relays, a couple of fuses and a number of switches are involved.

 

I'd pull the alternator and have it tested. It's quite possible that one of the diodes is marginal and drawing a "back current" when the engine is off.

 

I replaced the alternator but it wasn't that either, I've put back my old alternator in the EX!

 

Battery—Drain Testing

Check for current drains on the battery in excess of 50 milliamps with all the electrical accessories off and the vehicle at rest. Current drains can be tested with the following procedure.

WARNING:
Do not attempt this test on a lead-acid battery that has recently been recharged. Explosive gases can cause personal injury.

CAUTION:
To prevent damage to the meter, do not crank the engine or operate accessories that draw more than 10A.

Note:
Many computers draw 10 mA or more continuously.

Note:
Use an in-line ammeter between the battery positive or negative post and its respective cable.

Note:
Typically, a drain of approximately one amp can be attributed to an engine compartment lamp, glove compartment lamp, or luggage compartment lamp staying on continually. Other component failures or wiring shorts may be located by selectively pulling fuses to pinpoint the location of the current drain. When the current drain is found, the meter reading will fall to an acceptable level. If the drain is still not located after checking all the fuses, it may be due to the generator.

Note:
To accurately test the drain on a battery, an in-line digital ampmeter must be used. Using a test lamp or voltmeter is not an accurate method due to the number of electronic modules.

1. Make sure engine compartment and interior fuse panels are accessible without turning on interior and underhood lights.

2. Drive the vehicle at least 5 minutes and over 30 mph to turn on and exercise vehicle systems.

3. Allow vehicle to sit with the key off for at least 1 hour to allow modules to time out/power down.

4. Connect a jumper wire between negative battery cable and negative battery post to prevent modules from resetting and to catch capacitive drains.

5. Disconnect negative battery cable from post without breaking the connection of the jumper wire.

6. Note:
It is very important that continuity is not broken between the battery and the negative cable when connecting meter. If this happens, the entire procedure must be repeated.

Connect the Alternator, Regulator, Battery and Starter Tester (ARBST) between negative battery cable and post. The meter must be capable of reading milliamps and should have a 10 amp capability.

7. Note:
If the meter settings need to be switched or the test leads need to be moved to another jack, the jumper wire must be reinstalled to avoid breaking continuity.

Remove the jumper wire.

8. Note:
AMP draw. Draw will vary from vehicle to vehicle depending on the equipment package. Compare to a comparable vehicle for reference.

No stock vehicle should have more than 50 MA draw.

9. If the draw is found to be excessive, pull fuses from the interior fuse panel one at a time and note current drop. Do not reinstall the fuses until you are finished testing.

10. If the draw is still excessive, then remove fuses from the engine compartment fuse panel one at a time and note current drop. Do not reinstall fuses until you are finished testing.

11. Check the wiring schematic in the wiring diagram for any circuits that run from the battery without passing through the engine compartment fuse box. Disconnect these circuits if the draw is still excessive.


Battery—Electronic Drains Which Shut Off When the Battery Cable is Disconnected

1. Repeat the steps of the battery drain testing.

2. Make sure all doors are closed and accessories are off. Without starting the engine, turn the ignition switch to RUN for a moment and then OFF. Wait a few minutes for the illuminated entry lamps to turn off if equipped.

3. Connect the ampmeter and read the amperage draw.

The current reading (current drain) should be less than 0.05 amp. If current drain exceeds 0.05 amp after a few minutes, and if this drain did not show in previous tests, the drain is most likely caused by a malfunctioning electronic component. As in previous tests, remove the fuses from the fuse junction panel one at a time to locate the problem circuit.

 

Yes thanks but as you can see from the thread, I've gotten the amps and what circuit is causing it. (https://www.ford-trucks.com/forums/8...ical-woes.html)

The question I'm presenting is if anyone had any problems with their courtesy lamp circuitry drawing current while lights are off!