StanzaMoManza

I'm trying to check the error codes in an '86 Stanza 4WD Wagon. I turn the key on without starting the engine, turn the diagnostic switch on the ECU to the 'on' position (clockwise), wait 5 seconds, turn it to the 'off' position (CCW), but nothing happens.

There is a red and a green LED that should be lighting up at least blinking an 'all ok' code, but they don't even do that. Where should I go from here?

Asleep

try not holding it for 5 seconds. turn it and go back.

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T3rry

all i ddi was turn it to diagnostic andturn the key to on and it threw codes at me.

KA24Tech

His ECU was bad so he wasn't really doing anything wrong.
T3rry you have the correct way also.

Troy

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1992 S13 240SX SE Fastback KA24DE 5 spd - Type X Aero & Seibon Carbon Hood & Hatch -soon GT28RS
1993 U13 Altima SE KA24DET 5 spd w/ Nismo LSD - A high hp FWD can be fun (GT30R Turbo inside)
1990 Z32 300ZX VG30DETT 5 spd - 600HP & Very Civilized (working on twin GT28RS turbos)
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