Fuse 6 has a draw

Wesley

Registered
1994 mark viii 38 thousand miles I have a draw on fuse 6 any body have ideas for me or where to start
 
How much of a draw?

If my info is correct, Fuse 6 should be a 15A for the Autolamp, Anti-Theft, Keyless Entry, Power Seats and Power Mirrors. I'm sure there is a minimal constant draw for the Anti-Theft and Keyless Entry modules at least.

My first suspect would be the Autolamp circuit, possibly due to a suspect headlamp switch. Do you typically have the Autolamp function switched on? It may be as simple as switching the headlamp switch off and manually operating the headlamp switch.

Hopefully others will chime in and offer their suggestions. But if it's not something simple, it may require digging through the EVTM and some process of elimination for a more thorough diagnosis.

Do you happen to have the shop manual and EVTM to reference?
 
Yes I have a 94 mark viii shop manual from ford with wiring diagram for every circuit thank you for your input very much appreciated
 
How much of a draw?

If my info is correct, Fuse 6 should be a 15A for the Autolamp, Anti-Theft, Keyless Entry, Power Seats and Power Mirrors. I'm sure there is a minimal constant draw for the Anti-Theft and Keyless Entry modules at least.

My first suspect would be the Autolamp circuit, possibly due to a suspect headlamp switch. Do you typically have the Autolamp function switched on? It may be as simple as switching the headlamp switch off and manually operating the headlamp switch.

Hopefully others will chime in and offer their suggestions. But if it's not something simple, it may require digging through the EVTM and some process of elimination for a more thorough diagnosis.

Do you happen to have the shop manual and EVTM to reference?
I unhook auto light module no difference I have 9.6 volts draw with fuse 6 in and out is 0.750 mv
 
I unhook auto light module no difference I have 9.6 volts draw with fuse 6 in and out is 0.750 mv
I'm not following you here. Where are you measuring these readings?

To measure a draw across the fused circuit in milliamps(ma), you would need to connect a multimeter set up to read DC Amps with the leads connected to the fuse socket (obviously with the fuse out). Remove the fuse, have one lead probe one side of the fuse socket and probe the other lead in the other side of the fuse socket. Basically, you want to measure the current by connecting the meter in series with the circuit being measured.

An alternative method would be to measure the current at the battery with the multimeter in series between the battery and the disconnected battery cable(usually the negative cable). With the car and all accessories off, note the current draw in milliamps and then remove fuse 6 and check the current draw again. The difference between the two readings is the current draw for all the combined circuits on fuse 6.

You could also use a clamp-on ammeter.
 
Back
Top