Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Normal Scan Data Values (Includes PIDs)

*** UPDATED BY TSB #9324B15, DECEMBER, 1993


Diagnostic Reference Values:






NOTES

(1) - A/C ON.
(2) - Rear window defroster ON.
(3) - Steering wheel turned.
(4) - Blower on HIGH.
(5) - Headlights ON.
(6) - Monitor in DCV Manual Mode, Reference Pin to PWR GND (40/60).
(7) - HO2S should switch from rich (red LED) to lean (green LED), or lean to rich, at least once every 3 seconds. HO2S voltage should toggle above and below 0.450 DCV and should never be a negative value.

Reference values shown may vary ± 20% depending on operating conditions and other factors. RPM values are axle and tire dependent.