HELP! MIL (AKA Check Engine Light) never comes on (1 Viewer)

[vgpadil]

Hi all,

I want to run codes to see what is going on with my 1994 80 series, but the light never comes on; not when on 'acc', 'on', or run; not when E1 and TE1 are connected, not when W is grounded. the TSM is kind of weak in troubleshooting this. Is there a common pitfall for the MIL? Thank you so much.

 

[aljollano]

I had the same issue on one of my 100 series, the bulb for the check engine light was burnt.

A.J

 

[vgpadil]

I had the same issue on one of my 100 series, the bulb for the check engine light was burnt.

A.J

Thnaks.. I guess I will be starting my troubleshooting with some 'dash-works'...

 

[Pin_Head]

It is not a big deal for a 100 series that is OBD-II and you can read any codes from the OBD port, but you need to change the bulb to read any codes for pre OBD-II vehicles since the MIL bulb blinks out the code.

 

[jeremy56]

I had same issue, the PO removed the bulb completely before he sold it to me.