CHMSL info

[rush91]

I noticed yesterday, that my CHMSL brake light isn't coming on. I had the far right bulb go out in January, but kinda forgot about it. Then yesterday I noticed it's not coming on at all. The four lower brake lights are fine......Last night I searched and searched the FSM and couldn't find anything? Anyone know off hand what section I need to be looking in???? I was looking for the brake switch, which I'm sure is the issue. ( i hope )

Electrical stuff is NOT my strong suit, does the FSMs have the wiring diagram so I can track this down? From all the threads I searched on here, it seems the brake switch is a very common issue....

[Mystic ZR-1]

Bet it's the brake lite switch under the dash. Common C4 problem.
Hint: If your over 5 feet tall, take 10 minutes and
remove the driver's seat, 4 bolts and a few elec connectors... makes it
a lot easier to work under the dash.
Good opportunity to clean under the seat and ya might even
find some loose change!

[KPW]

8A-110-0 and 8A-110-1 give the wiring diagrams for the stop lamps and brake switch.

[rush91]

Originally Posted by KPW

8A-110-0 and 8A-110-1 give the wiring diagrams for the stop lamps and brake switch.

Thank you sir!!

[rush91]

Originally Posted by Mystic ZR-1

Bet it's the brake lite switch under the dash. Common C4 problem.
Hint: If your over 5 feet tall, take 10 minutes and
remove the driver's seat... makes it a lot easier to work under the dash.

I have learned that lesson the hard way.....wrenched back muscles!

[Z51JEFF]

I've replaced mine several times and it's not too bad. Remove the lower seat cushion,black panel and the switch isn't hard to locate. Be ready to plug in the new switch,with the switch the lights will be energized.

[WVZR-1]

If you have power to the ABS module in the car "BLUE WIRE" when you apply brakes your problem is NOT the SLS. Much easier to check this wire first rather than going up in under the dash to start. On 8A-110 you'll see the "splice" where it has an arrow directing towards the ABS. Very easy check.

** You're not looking for the "splice" - you check it at the ABS module. I mentioned the "splice" only because it's referenced in the FSM.

[rush91]

Originally Posted by WVZR-1

If you have power to the ABS module in the car "BLUE WIRE" when you apply brakes your problem is NOT the SLS. Much easier to check this wire first rather than going up in under the dash to start. On 8A-110 you'll see the "splice" where it has an arrow directing towards the ABS. Very easy check.

** You're not looking for the "splice" - you check it at the ABS module. I mentioned the "splice" only because it's referenced in the FSM.

Well I found the section in the FSM that has the diagrams. But it might as well wrote in Chinese, I just don't understand electrical stuff. I had no idea I had to remove the carpet piece under the steering wheel to get to anything. Drove out to the car last night, but forgot a flashlight. So couldn't see a damn thing......It looks as though there are about 8 screws I need to take out to remove the hush panel. But hey I'm learning as I go.

So check the ABS module 1ST? Where is that located?

[WVZR-1]

Originally Posted by rush91

So check the ABS module 1ST? Where is that located?

Left storage compartment behind the driver seat.

See 8A-44 for the wiring and you'll see LT BLU @ C400. See 8A-201-16 for the compartment specifics. Familiarize yourself with the 8A section of the FSM. It is "your friend"!!!!

[rush91]

Originally Posted by WVZR-1

Left storage compartment behind the driver seat.

See 8A-44 for the wiring and you'll see LT BLU @ C400. See 8A-201-16 for the compartment specifics. Familiarize yourself with the 8A section of the FSM. It is "your friend"!!!!

I will check that tonight....what am I looking for? If my other brake lights are working, how would it be the ABS? I'm sure the two go hand in hand, but does the wiring run from the ABS to the brake switch?