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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Cannot read codes

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Old 03-08-2013, 03:42 AM
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Cannot read codes

My CEL will not turn on during start up or when trying to check for codes.. The bulb is good---does anyone know what pin/wire coming from the computer controls this?

1995 2wd 22re
Old 03-08-2013, 07:34 AM
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I'm pretty sure they are the same 93-95.
Old 03-08-2013, 07:50 AM
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I get Violet as well.

The "W" pin on the diagnostic connector is supposed to be on the same wire. You might want to check there quickly before you dive into the harness.
Old 03-08-2013, 09:27 AM
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Originally Posted by scope103
I get Violet as well.

The "W" pin on the diagnostic connector is supposed to be on the same wire. You might want to check there quickly before you dive into the harness.

Thanks

I'm not seeing the Violet wire on the diagram..But its most likely my eye's lol

thanks for the tip on W pin.. going Radio Shack and getting a test bulb later today..
Old 03-08-2013, 09:39 AM
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Pin A5 B8 or C10, top right corner of the ECM in the diagram.
Old 03-08-2013, 09:44 AM
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After Radio Shack---Eye Dr.

Thanksssssssssssssss
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