2003 M45 Side mirrors and inside light does not work
2003 M45 Side mirrors and inside light does not work
Hi my side mirrors, inside dome light, cruise control, and steering wheel tilt do not work. I checked the fuses but they are ok. Anyone else had/have this issue? TIA!
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VStar650CL
- Technical Expert
- Posts: 9378
- Joined: Thu Nov 12, 2020 1:25 pm
- Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S
Re: 2003 M45 Side mirrors and inside light does not work
You have multiple problems, so let's take this one at a time:
Tilt Motor: This is controlled by the BCM and also has a circuit breaker in the power path. See STC-12 here for the wiring diagram: https://www.nicoclub.com/service-manual ... %2Fstc.pdf
If the tilt and telescope are both inop, then the problem is likely either a bum circuit breaker or a bad ground at the T/T switch. If only the tilt doesn't work, put a test lamp across the tilt motor connector and see if it lights when you work the tilt switch. If it does, then you have a bum motor that's open circuit. If it doesn't, put a voltmeter on the Pink/Blue and Purple/Red wires at the switch and see if they go from voltage to ground when the switch is operated. If not you have a bad switch, if so you have a bad BCM.
Room Lamp: Exactly which lamps are out, and do they respond to manual switching or are they just out with the doors? If the front and rear dome lights are both out then you have a power problem in the wiring to the roof (assuming the fuse actually is good -- did you use a test lamp to check it?). If only the front is out then you may have a bad switch assembly.
Mirrors: The door mirrors are a straightforward grounding switch setup, see GW-116 here: https://www.nicoclub.com/service-manual ... 3%2Fgw.pdf
Again assuming that the fuse is good, use a test lamp to check for a light between Pink/Black and Black at the mirror switch. If it has power and ground then the switch is probably shot.
Cruise: Does the CC lamp come on when you hit the on/off button? If not, either your wheel switches or your clockspring are probably going bad (more likely the clockspring). If it does come on but won't set a speed, the first thing to check is the brake pedal switch.
Tilt Motor: This is controlled by the BCM and also has a circuit breaker in the power path. See STC-12 here for the wiring diagram: https://www.nicoclub.com/service-manual ... %2Fstc.pdf
If the tilt and telescope are both inop, then the problem is likely either a bum circuit breaker or a bad ground at the T/T switch. If only the tilt doesn't work, put a test lamp across the tilt motor connector and see if it lights when you work the tilt switch. If it does, then you have a bum motor that's open circuit. If it doesn't, put a voltmeter on the Pink/Blue and Purple/Red wires at the switch and see if they go from voltage to ground when the switch is operated. If not you have a bad switch, if so you have a bad BCM.
Room Lamp: Exactly which lamps are out, and do they respond to manual switching or are they just out with the doors? If the front and rear dome lights are both out then you have a power problem in the wiring to the roof (assuming the fuse actually is good -- did you use a test lamp to check it?). If only the front is out then you may have a bad switch assembly.
Mirrors: The door mirrors are a straightforward grounding switch setup, see GW-116 here: https://www.nicoclub.com/service-manual ... 3%2Fgw.pdf
Again assuming that the fuse is good, use a test lamp to check for a light between Pink/Black and Black at the mirror switch. If it has power and ground then the switch is probably shot.
Cruise: Does the CC lamp come on when you hit the on/off button? If not, either your wheel switches or your clockspring are probably going bad (more likely the clockspring). If it does come on but won't set a speed, the first thing to check is the brake pedal switch.
Re: 2003 M45 Side mirrors and inside light does not work
Hey, thank you so much for all this information.
Tilt Motor: Only the tilt does not work.
Room Lamp: Only the front lamps do not work.
Cruise: It comes on but wont speed.
I'll take a look at everything and again thank you for taking the time to write all this up.
Tilt Motor: Only the tilt does not work.
Room Lamp: Only the front lamps do not work.
Cruise: It comes on but wont speed.
I'll take a look at everything and again thank you for taking the time to write all this up.
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VStar650CL
- Technical Expert
- Posts: 9378
- Joined: Thu Nov 12, 2020 1:25 pm
- Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S
Re: 2003 M45 Side mirrors and inside light does not work
You're most welcome. You can find the wiring diagram for the dome lights on LT-129 here:
https://www.nicoclub.com/service-manual ... 3%2Flt.pdf
Since the rear ones work and power is shared, put a test lamp between Red/White at the lamp assembly and a good chassis ground. If that doesn't light then you have an issue in the roof harness, if it does then either both bulbs are bad or the problem is on the ground side of the circuit. Don't discount that both bulbs may be out, people often don't notice that one headlight is out until the second one burns and they're driving in the dark. The same is true of a double dome lamp.
https://www.nicoclub.com/service-manual ... 3%2Flt.pdf
Since the rear ones work and power is shared, put a test lamp between Red/White at the lamp assembly and a good chassis ground. If that doesn't light then you have an issue in the roof harness, if it does then either both bulbs are bad or the problem is on the ground side of the circuit. Don't discount that both bulbs may be out, people often don't notice that one headlight is out until the second one burns and they're driving in the dark. The same is true of a double dome lamp.
Re: 2003 M45 Side mirrors and inside light does not work
Will do thank you.