Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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What is the Year and Model Nissan?
Do you have a Volt Meter? Do you know if the High Beam Fuses are getting power when the High beams are turned on?
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Do you have a Volt Meter? Also when you checked the High Beam Fuses does the fuses have power when the high beams are on?
Are both high beams out?
Are we dealing with low beam or high beams? When on Auto the low beams would come on?
The low beam fuses for the Right side fuse is in the IPDM and there is a Left side fuse also. Then you also have 2 more fuses for Right High and Left High.
So please start by checking those fuses and let me know exactly which lights are not working? High beam or low beam?
Yes, they are 10 amp fuses. Please check to make sure this fuse is getting power on both sides of the back of the fuse when the high beams are on?
Use the pinch taps and slide up the IPDM to check it.
On each side of the IPDM so you can slide it up.
you got it.
Is that the low beam fuses or the high beam fuses?
If the high beam fuses are getting power, then we will need to check to see if power is coming out of the IPDM to the lights.
ok.. Well we need to then measure voltage out of the IPDM. Power goes to the DTR light module.
Can your read a wiring diagram?
Yes they are.. Hang on, let me share the wiring diagram with you..
1 min please.. This way you can see what I am seeing.
You are going to want to check all fuses also. The DTR module does play a factor in the operation of the high beams.
That is the wiring diagram. I also included the IPDM layout so you can see where the pins are located.
We want to check pins 27 and 28 out of the IPDM for power with the high beams on
You need to ground the black lead of your meter, and back pin the connector with the Red positive lead to check for power. I normally like to use T-Pins. You can get them at a office supply store.
See link for example image.
This is where the DTR control unit is located under the drivers side dash area.
If you have power coming out of the IPDM to the DTR control unit. Then I would use the wiring diagram to see if the DTR is putting out power for the High Beams when turned on. It sounds like it's going to be one of those two control units.
If you have any more questions on this, please feel free to ask.
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