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Home >> Isuzu >> 1989 >> Pickup 1 Ton, MSG5E >> Repair and Diagnosis >> Engine Performance >> System >> Tests W/Codes - CARBURETED >> Entering Self-Diagnostics >> Notes

Entering Self-Diagnostics: Notes

CAUTION: DO NOT  enter self-diagnostic system until all basic engine checks (engine, fuel and spark) have been performed. See BASIC TESTING - CARBURETED article in this section.

Verify "CHECK ENGINE" light circuit is operational. To enter self-diagnostics on Amigo and Pickup models, install jumper wire between White and Black wires of diagnostic connector with ignition on. See Figure .