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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Scan Tool Data Definitions



SCAN TOOL DATA DEFINITIONS

Battery 1: The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the battery positive voltage circuit of the body control module (BCM).

Crank Request Signal: The scan tool displays Yes/No. The scan tool displays Yes when the powertrain control module (PCM) receives a crank request.

Generator L-Terminal Signal Command: The scan tool displays On/Off. The scan tool displays Off until the engine is running, then the PCM supplies then the percentage value varies depending on electrical loads

Ignition 1 Signal: The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the Ignition 1 circuit to the PCM.

Starter Relay Command: The scan tool displays On/Off. The scan tool displays Off until the PCM commands the starter relay On.

TR Sw.: The scan tool displays Invalid, Neutral, Drive, Park, Low, Reverse and Intermediate. The scan tool displays the position of the transaxle switch.