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Home >> Isuzu >> 1989 >> Impulse 2.0 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Tests W/Codes >> Entering Self-Diagnostics >> Notes

Entering Self-Diagnostics: Notes

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

Verify "CHECK ENGINE" light circuit is operational. To enter self-diagnostics, install jumper wire between diagnostic leads with ignition on. See Figure .