Headlights not working on my Caldina, help pls! - Toyota Yaris Forums

JudgeM · 09-29-2016, 12:13 AM

Hi all.

I bought a 1993 Toyota Caldina 2.0 (4wd petrol) a couple of months ago as a kind of a project car to learn some automotive repair/maintenance on. She's a really tired car now and has few small issues here and there

So far the biggest issue is the headlamps have decided to stop working.
Both low and high beam do not work. I think it is intermittent, because once while driving they decided to turn on for a short moment.

I have checked and tested the relay that's under the bonnet labelled 'head' and it is fine.

What should I check next ?

parking lights are fine btw.

Bluevitz-rs · 09-29-2016, 12:18 AM

You've checked for power at the bulbs?

Also, not sure on the wiring schematic of that car, so make sure there isn't a common ground point that's corroded or loose.

JudgeM · 09-30-2016, 10:40 PM

Power at bulbs all fine. I did a bit of more digging around, its a bit hard without a wiring diagram, I used 96 corolla diagram that's similar.

I think I've narrowed down the problem:

-Relay is good
-Dimmer switch is good
->Wiring between relay and Dimmer switch seems to be the problem. I grounded the point at the relay which is what the dimmer switch does and it lights up. I suspect loose connection in the engine room fuse box where the relay is located. I gotta go borrow some tools so I can open it up.

Does anyone have a wiring diagram for this car ? or something more similar like a Corona Wagon ?

JudgeM · 10-09-2016, 08:46 PM

Fixed it

Upon further inspection, the relay coil was not getting its ground signal from the switch. So somewhere between the dimmer switch and relay coil there is an open circuit.

aint nobody got time to open up the hole car and trace the wiring so I just added my own wiring from the dimmer switch to the relay. Headlights working fine now

09-29-2016, 12:13 AM	#1
JudgeM View User's Garage Drives: 2005 Toyota Vitz RS Join Date: Jan 2012 Location: Auckland, New Zealand Posts: 181	Headlights not working on my Caldina, help pls! Hi all. I bought a 1993 Toyota Caldina 2.0 (4wd petrol) a couple of months ago as a kind of a project car to learn some automotive repair/maintenance on. She's a really tired car now and has few small issues here and there So far the biggest issue is the headlamps have decided to stop working. Both low and high beam do not work. I think it is intermittent, because once while driving they decided to turn on for a short moment. I have checked and tested the relay that's under the bonnet labelled 'head' and it is fine. What should I check next ? parking lights are fine btw.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
headlights not working....	Judas Iscariot	DIY / Maintenance / Service	66	09-05-2019 11:27 PM
Headlights On reminder not working??	jeeper5usa	DIY / Maintenance / Service	0	03-20-2016 01:27 PM
Free Projectors or LED tails for 1 Yaris 4d + 1 Yaris 2d in SoCal	V70R_Blackbrick	Cosmetic Modifications (Exterior/Interior)	26	11-27-2013 10:14 PM
Headlights not working !! HELP	dav	DIY / Maintenance / Service	1	09-26-2013 06:43 AM
Headlights stopped working - need help	Split	Cosmetic Modifications (Exterior/Interior)	2	03-02-2012 11:04 AM

09-29-2016, 12:18 AM	#2
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	You've checked for power at the bulbs? Also, not sure on the wiring schematic of that car, so make sure there isn't a common ground point that's corroded or loose.

09-30-2016, 10:40 PM	#3
JudgeM View User's Garage Drives: 2005 Toyota Vitz RS Join Date: Jan 2012 Location: Auckland, New Zealand Posts: 181	Power at bulbs all fine. I did a bit of more digging around, its a bit hard without a wiring diagram, I used 96 corolla diagram that's similar. I think I've narrowed down the problem: -Relay is good -Dimmer switch is good ->Wiring between relay and Dimmer switch seems to be the problem. I grounded the point at the relay which is what the dimmer switch does and it lights up. I suspect loose connection in the engine room fuse box where the relay is located. I gotta go borrow some tools so I can open it up. Does anyone have a wiring diagram for this car ? or something more similar like a Corona Wagon ?

10-09-2016, 08:46 PM	#4
JudgeM View User's Garage Drives: 2005 Toyota Vitz RS Join Date: Jan 2012 Location: Auckland, New Zealand Posts: 181	Fixed it Upon further inspection, the relay coil was not getting its ground signal from the switch. So somewhere between the dimmer switch and relay coil there is an open circuit. aint nobody got time to open up the hole car and trace the wiring so I just added my own wiring from the dimmer switch to the relay. Headlights working fine now