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great post and first to do fuse checks, for phantom drains.
G16 or J18 engine????
very good work. did you look at car in 100% dark,. all doors open , hood and trunk? called dark current checks.
and you are correct ,most fuses have many loads. some are 20 or more. (now windows ,usually)
DOME (im logged in to alldata.com so can you.....
Dome is doom, LOL called fuse #8 by suzuki.
a RED feed wire..... then white....
TCM, interior lights,trunk light,Radio, keyless,Clock and ECM
a real FSM make this far more easy, especially old cars.
and DC amp clamp meter 100x more easy.
alldata.com has the full set if schematics.
First step have the battery tested, a bad cell can cause a internal drain and kill the battery, if the batt is ok then check for interior lights like visors that stay on or interior light that come on by themselves at night due to defective door switches.
all the lights above the dash do not work ?????? DOME light's ??? No light's come on when you open the door or any door ? Wouldn't think all the door ajar switches bad at one time .
The interior lamps consists of two groups, lamps that can not be dimmed and lamps that can be dimmed. This first group consists of lamps that may not be dimmed. This Includes those lamps that may be manually turned on by placing the interior lamp switch to the DOME position, or by opening a door or a compartment:
• Auxiliary dome lamp (SEO, RPO 6C7)
• Dome lamp
• instrument panel (I/P) compartment lamp
• Inside rear view mirror lamps
• I/P courtesy lamps
• Reading lamps
• Rear compartment courtesy lamp
• Sunshade vanity mirror lamps
Battery positive voltage is applied at all times to the DIC/RKE fuse and to the switched side of the BATT RUNDOWN PROTECTION relay in the right I/P junction block. The DIC/RKE fuse supplies battery positive voltage to the coil side of the BATT RUNDOWN PROTECTION relay. When the ignition is turned to the ON position, the body control module (BCM) provides a ground to the Inadvertent relay control circuit. This energizes the BATT RUNDOWN PROTECTION relay and applies battery positive voltage to I/P BRP fuse and to the TRK/ROOF/BRP fuse. Battery positive voltage is applied from the I/P BRP fuse to the I/P courtesy lamps, I/P compartment lamp and to the I/P compartment feed circuit to the BCM. Battery positive voltage is also applied from the TRK/ROOF/BRP fuse to the:
If the BCM receives a door lock or unlock input signal, the BCM will activate the BATT RUNDOWN PROTECTION relay, which provides battery positive voltage to all interior courtesy lamps. When any door is opened, the door jam switch contacts close and the BCM receives a door-open input signal. The BCM then applies a ground to the theater dimming ground control circuit illuminating the courtesy and dome lamps.
After all the doors are closed, the courtesy lamps remain illuminated for approximately 40 seconds. The courtesy lamps will also turn on and remain illuminated for approximately 15 seconds after the ignition key is removed, prior to any door being opened.
When the headlamp switch is placed in the DOME position, the BCM receives a ground signal. The BCM then applies a ground to the theater dimming ground control circuit. This illuminates the dome and roof rail lamps.
The courtesy lamps will normally turn off using the theater dimming feature. The BCM provides a pulse width modulated ground to all courtesy/reading, dome, and inside rear view mirror lamps for the theater dimming feature. The BCM will immediately turn off the courtesy lamps if a door lock command is received with all the doors closed, or if the ignition switch is turned to either the ON or RUN position.
The BCM activates the interior lighting output 15 seconds after receiving the class 2 message "Airbags Deployed" from the sensing and diagnostic module (SDM). The interior lamps remain activated for 25 minutes.
The door ajar switch is part of the lock actuator inside the door !
Disconnect battery from vehicle overnight to check for internal battery drain.......just take one of the cables off. If the battery is still up and starting the vehicle after being disconnected after a day or two......the drain IS in the vehicle and will have to be checked again. Do it yourself. Buy a cheap 12 volt test light. Place it between the cable you removed before. One end on the battery post and the other on the cable end. Now....with the key off...... If the light glows brightly....you have TOO MUCH drain. We want a dim glowing light. The dim light is just the memory circuits in the electronics and OK.
With the doors closed....take out one fuse at a time until the light glows dim.......the fuse that dims the light is the problem circuit. If no fuse dims the light...remove relays one at a time. Remember....some fuses and relays could be in the engine compartment and under the dash. If no relay dims the light disconnect ALL alternator wires. Remember....anything that uses power will make the light glow ....keep those doors closed (we do not want interior light drain affecting the test ) and if you have a under hood light check it first by removing the bulb. We do not want false readings.
First disconnect the battery overnight just to make sure the battery is not self discharging......if it's dead or down in charge while disconnected....time for a new one. Now.....if the battery is good....disconnect one battery cable and place a 12 volt test light between the cable and the battery post the cable had just been attached to. A bright light means a drain in the car. Your job is to remove one fuse at a time until the light dims. A dim light is OK...clock memory etc. Remember....a open car door is a drain......the dome light.....so keep them closed while pulling fuses. Also....if the fuses don't show a drain......disconnect ALL wires from the alternator....there could be a drain there. Just keep disconnecting one thing at a time until the light goes out or dims.
Your passenger window motor is most likely the problem. It could be the switch. If you get into your car and key on engine off. Turn your interior lights on and try to operate the window....Look at the brightest interior light/dome lamp and see if it dims while you are trying to operate the switch....It may be hard to see but if it dims at all the motor is locked up and is pulling amperage from the battery. This is just a rule of thumb however it has never failed me as the motor pulling amperage is the only way that the lights will dim. if not it could be the switch. Hope this helps