Cel not on (1 Viewer)

[John copello]

My cel does not light up during start up 1993 80 series
What to check first
Thanks

 

[bloc]

Does it run?

 

[retrofive]

First guess, fusible links.

More info and troubleshooting here:
Emergency Troubleshooting Procedures - FAQ Item (Recommend Keeping Copy in Truck)

 

[John copello]

Does it run?

Yes no problem
Thanks

 

[retrofive]

2nd guess; dash bulb for the CEL burnt out perhaps?

 

[John copello]

2nd guess; dash bulb for the CEL burnt out perhaps?

 

[John copello]

Is it easy to check and remove the dash?
No light even on jumping wires
Thanks

 

[retrofive]

Is it easy to check and remove the dash?
No light even on jumping wires
Thanks

Its not too bad. Just some screws and clips. Watch the plastic pieces when removing as there trucks are getting older the plastic bits get brittle.

 

[John copello]

First guess, fusible links.

More info and troubleshooting here:
Emergency Troubleshooting Procedures - FAQ Item (Recommend Keeping Copy in Truck)

 

[John copello]

Thanks for reply
Whats the best way to check those fusible links

 

[retrofive]

Thanks for reply
Whats the best way to check those fusible links

Given your truck runs, I don't that is the issue. If the fuses were blown, probably wouldn't start. But to answer your question a good digital multi meter would be the tool to test the circuits for power and continuity.

 

[Mattsyota]

It wouldn't start or would start idle fine but die once you raised your RPMs, it's a bad bulb most likely

 

[John copello]

Given your truck runs, I don't that is the issue. If the fuses were blown, probably wouldn't start. But to answer your question a good digital multi meter would be the tool to test the circuits for power and continuity.

 

[John copello]

Is using test lights the same connecting to diagnostic pins e1 to t1, would that give me a code reading
Thanks

 

[bigredmachine]

Thanks for reply
Whats the best way to check those fusible links

for the cost your just better off replacing, i think i got a new set for about 12$. as stated above their probably fine but its possible to get corrosion in the wires that can be hidden by the wire insulation.

i dont know if using a test light would give the codes by flashing out, but it might

 

[jonheld]

Is using test lights the same connecting to diagnostic pins e1 to t1, would that give me a code reading
Thanks

Not likely. The diagnostic output is the flashing of the CHECK ENGINE light. Shorting TE1 to E1 enters the diagnostic mode on the ECU.

 

[jonheld]

It wouldn't start or would start idle fine but die once you raised your RPMs, it's a bad bulb most likely

If FL1 was open there would be no power to the starter logic.
If FL2 was open there would be no power to the coil/igniter and injectors.
If FL MAIN was open there would be no power to the ECU.

 

[John copello]

Where can i get the bulb
Is it dolder tothe pcb board
Thanks

 

[retrofive]

Search here for part#'s but here is a start.
LED instrument panel/gauge cluster
97 FZJ80 Gauge cluster light bulb?

 

[John copello]

Thanks every body
For your time n efforts