Update - 8/17/13 - I've decided to take another swing at this, living without reverse lights is getting old quick. Where can I find connections C-124 / C-23?

So, bottom line up front -

1. Reverse lights didn't work (not turning on)
2. Replaced bulbs. Nothing.
3. Replaced Fuse. Nothing
4. Replaced Transmission Switch. Nothing.

Out of ideas. I have the wiring diagram available to me and it is spartan to say the least. It's on

page 90-63

I have my voltmeter handy, what should plug B-111 (Backup light switch plug) read when I insert the +/- leads into it? I figure this is the logical place to start as early into the food chain as possible.

1. Reading at C-211 (7.5A Fuse) - 12.2V - OK
2. Reading at B-111 (Backup Light Switch) - 13.7V - CAVEAT
3. Reading at F-14 (Backup Light) -

*I just realized I am mentally challenged. Red --> Brown at B-111 are both hot lines and not ground, hungry brain completely forgot the switch completes the circuit....the hell is wrong with me :-/

 

Have you cheacked for power and ground at the revs lights. Not going to get a reading if switch is unplug unless your doing an ohm test to see if you have a open in the wires, you should a a 10- 12v at the backup lights

 

Ohm test isn't going so well at the switch without knowing what are good readings. I'll have to make some time this weekend to pull it out and bench the sensor (for science (and ) ).

I'm not getting a reading at F-14 with everything else connected (B-111 Is jumped) which leaves me open to the caveat at the end of OP.

 

Have you tryed ground the lights see if you have a bad ground you should have 12v at 6 with the voltmeter put one lead on 6 and one lead on a good ground if you read 12v you have a ground problem. Have you tried swaping relays see if that helps

 

I'll check point 6@F-14 after dinner. I'm not seeing a relay on the diagram, could you be more specific?

 

Sorry I looked at it worng its just a juntion block not a relay, did you check the juncction block under your dash by your foot on the driver side

 

Ya, I had a positive reading at the fuse and a positive reading down the line at the actual switch plug ONLY if I ground it to the (-) battery terminal.

 

have you recently added a reverse camera? Just wondering if something was tapped.

 

Nope, no wiring has been modified in this or adjacent circuits.

 

[quote=dr_latino999;10290746]So, bottom line up front -


I have my voltmeter handy, what should plug B-111 (Backup light switch plug) read when I insert the +/- leads into it?

Looking at this schematic I would assume that the side of the connector going to the switch would ring continuity or have close to zero Ohms resistance if the car is placed in reverse; or an infinite (or extremely large ) resistance with the transmission in any other position and not ring continuity. If this is to basic an answer sorry.

 

[QUOTE=dizaryl;10292101]Oh you're right, I just appended my OP to state I am officially retarded and the brown and red at B-111 are both hot and the switch is just that - a switch. All my key readings need to be done at the tail now.

 

Annual bump, read update at top.

 

I have the exact same issue with reverse lights not working

 

bumping this - is there a fuse diagram to tell which one this is? do reverse lights have their own fuse?

 

Check the schematic top of this post, #3 - 7.5 amps in the junction box.