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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Scan Tool Data Definitions

Scan Tool Data Definitions
Calibration ID: Displays the calibration ID for the instrument cluster.
Low Coolant Level: Displays OK and Low. The status of the discrete engine coolant level switch signal. The instrument cluster uses this input to determine display of the CHECK COOLANT LEVEL message on the DIC.
PROM ID: The PROM ID for the instrument cluster.
FC Relay 1 Command: The scan tool displays ON or OFF. This parameter indicates the PCM commanded state of the low speed cooling fans.
FC Relay 2 and S/P Command: The scan tool displays ON or OFF. This parameter indicates tie PCM commanded state of the high speed cooling fans.