Robertwav1
Well-known member
Even manual switching with the headlight thingy, they don't work. Fuses good. Door switches work everything else. Does anyone know where this ground may be located? "93" thanks!
Door and Floor Courtesy Lights Missing!
- Thread starter Robertwav1
- Start date
E
ecss
Guest
There are two circuits that can control the Footwell, Cargo and Door courtesy lamps.
The dimmer switch on the headlight switch can provide a ground path for the circuit and the CCM can turn the lights on by grounding the Courtesy Lamp Relay.
Both circuits use a different ground.
Even though you said you checked all fuses you need to verify that the 5 amp RH CTSY is good. If you have a meter remove the fuse and check for zero ohms across the fuse. If the fuse checks good, use a volt meter and you should measure 12 volts at the fuse at all times. The fuse provides 12 volts for the Door and Footwell light bulbs.
The LH CTSY fuse provides the 12 volts for the Cargo lamps.
If you open either door, do the cargo lamps come on and not the footwell or door lamps? That indicates the Courtesy Lamp Relay is working and I'd suspect the RH CTSY fuse is bad.
The dimmer switch on the headlight switch can provide a ground path for the circuit and the CCM can turn the lights on by grounding the Courtesy Lamp Relay.
Both circuits use a different ground.
Even though you said you checked all fuses you need to verify that the 5 amp RH CTSY is good. If you have a meter remove the fuse and check for zero ohms across the fuse. If the fuse checks good, use a volt meter and you should measure 12 volts at the fuse at all times. The fuse provides 12 volts for the Door and Footwell light bulbs.
The LH CTSY fuse provides the 12 volts for the Cargo lamps.
If you open either door, do the cargo lamps come on and not the footwell or door lamps? That indicates the Courtesy Lamp Relay is working and I'd suspect the RH CTSY fuse is bad.
- Thread starter
- #3
Robertwav1
Well-known member
Thanks very much for the reply, this is great information. The fuse is good, I did check it out. I painfully went over all the grounds I could find along the rails and bell housing, behind the battery etc.
The CCM checks out and processes the info correctly, lights the cargo area only as does the manual switch (headlight rheo).
I think though what you had mentioned about the 5 amp fuse, it could be a wire behind the fuse box. This is where I'm headed next. Also, Im trying to get a print for the wiring of this thing as to trace down the hot wire.
One other thing to add is that the CCM turns on the relay but it's whinning and the lights that do turn on in the cargo area are not as bright as when I turn on the manual switch.
Anyway...I need to address why the manual switch won't turn them on before I go back to the relay...which may be relevent to the whinning relay. Thanks for any ideas that you may have. I'm working on it.
The CCM checks out and processes the info correctly, lights the cargo area only as does the manual switch (headlight rheo).
I think though what you had mentioned about the 5 amp fuse, it could be a wire behind the fuse box. This is where I'm headed next. Also, Im trying to get a print for the wiring of this thing as to trace down the hot wire.
One other thing to add is that the CCM turns on the relay but it's whinning and the lights that do turn on in the cargo area are not as bright as when I turn on the manual switch.
Anyway...I need to address why the manual switch won't turn them on before I go back to the relay...which may be relevent to the whinning relay. Thanks for any ideas that you may have. I'm working on it.
E
ecss
Guest
This schematic shows the RH CTSY fuse gets 12 volts from Under the Hood Fuse Block #2 20 amp Interior LIghting Fuse. There is a Red wire from this fuse that goes to the RH CTSY fuse.
This fuse also supplies 12 volts to the following fuses in the same fuse panel.
LCD 5 amp fuse
CCM#2 5 amp fuse
RDO Battery fuse 5 amp
LH CTSY fuse 20 amp
RH Illumination fuse 5 amp
LH Illumination fuse 5 amp
CNSL Illumination fuse 5 amp
So you need to find out why there is no 12 volts at the RH CTSY fuse.
This schematic shows the light switch. When turned to the courtesy position, it grounds the Footwell and Door lamps.
It also grounds a diode which allows the current to flow thru the two Cargo lamps.
This schematic shows the Courtesy Lamp Relay. The CCM grounds the primary coil. The Primary coil gets 12 volts from the RH CTSY fuse shown by the arrow with the C inside of it. The arrow with the C in it is also shown on the second schematic which is the source of the 12 volts. (The RH CTSY fuse).
If there's no 12 volts to the primary coil of the Courtesy Lamp Relay, I'm suprised that relay is energizing.
If you can't read the schematics. Right click on the schematic and save it to your computer, then print it out.
This fuse also supplies 12 volts to the following fuses in the same fuse panel.
LCD 5 amp fuse
CCM#2 5 amp fuse
RDO Battery fuse 5 amp
LH CTSY fuse 20 amp
RH Illumination fuse 5 amp
LH Illumination fuse 5 amp
CNSL Illumination fuse 5 amp
So you need to find out why there is no 12 volts at the RH CTSY fuse.
This schematic shows the light switch. When turned to the courtesy position, it grounds the Footwell and Door lamps.
It also grounds a diode which allows the current to flow thru the two Cargo lamps.
This schematic shows the Courtesy Lamp Relay. The CCM grounds the primary coil. The Primary coil gets 12 volts from the RH CTSY fuse shown by the arrow with the C inside of it. The arrow with the C in it is also shown on the second schematic which is the source of the 12 volts. (The RH CTSY fuse).
If there's no 12 volts to the primary coil of the Courtesy Lamp Relay, I'm suprised that relay is energizing.
If you can't read the schematics. Right click on the schematic and save it to your computer, then print it out.
- Thread starter
- #5
Robertwav1
Well-known member
Thank You, Thank You! :BOW
It looks like that connection at S241 or S242 or S232 on the second print (can't quite make that numbr out) but the prints are great! I have a helminc manual on the way, I suppose it will tell locations of these connections? Again I thank you very much for the drawings, it gives me a head start and something to think about before the weekend gets here.
It looks like that connection at S241 or S242 or S232 on the second print (can't quite make that numbr out) but the prints are great! I have a helminc manual on the way, I suppose it will tell locations of these connections? Again I thank you very much for the drawings, it gives me a head start and something to think about before the weekend gets here.
E
ecss
Guest
S241 is the splice (bunch of Orange wires) for the footwell and door lamps.
S means it's a splice connection. I doubt that connection is bad.
Are you saying you measure 12 volts at the RH CTSY fuse? :ugh
The Hot side of the fuse is a red wire coming from the Interior Lighting fuse under the hood.
The Orange wire from the fuse goes to the Footwell and Door lamps.
S means it's a splice connection. I doubt that connection is bad.
Are you saying you measure 12 volts at the RH CTSY fuse? :ugh
The Hot side of the fuse is a red wire coming from the Interior Lighting fuse under the hood.
The Orange wire from the fuse goes to the Footwell and Door lamps.
- Thread starter
- #7
Robertwav1
Well-known member
I'm on my way out of work now so I'll check tonight and post tomorrow or later tonight... thanks!
- Thread starter
- #8
Robertwav1
Well-known member
Hey there ecss!
Problem was the orange wire behind the fuse panel. Problem solved! Thank you again for the diagrams. Started again with the fuse box next to the battery, cleaned up the connection there a bit and then moved to the fuse box on the passenger side and that's where the problem was, broken wire. Guess I should have checked here before but I went the harder route first, I should know better! Live and learn, life is good again!
Problem was the orange wire behind the fuse panel. Problem solved! Thank you again for the diagrams. Started again with the fuse box next to the battery, cleaned up the connection there a bit and then moved to the fuse box on the passenger side and that's where the problem was, broken wire. Guess I should have checked here before but I went the harder route first, I should know better! Live and learn, life is good again!
E
ecss
Guest
Glad to hear you solved your problem. The Helms manual will save you a ton of money. 
- Thread starter
- #10
Robertwav1
Well-known member
Glad to hear you solved your problem. The Helms manual will save you a ton of money.
I should have pulled the trigger a long time ago regarding the service manual. I really haven't had too many issues with the car. I do plan on keeping it so I'm sure it will come in handy. Thanks!
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