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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Mode 2 - Testing Input Signals From System Sensors





Testing input signals front system sensors

H1

Activate sensor to be tested as instructed in service manual.

H2

(Example shows menu for Automatic Transmission)
Activate new sensor to continue testing. Press ENTER to return to "ACTIVATE SENSOR" menu.

Press EXIT to return to test mode selection menu "READ DTC" (see Scan Tool Display Information, Step E1).

H3

Display of "Invalid code" may be due to following:

- Incorrect model

- Incorrect diagnostic unit

- Poor signal

Check to establish cause and repeat test. Press ENTER to return to menu H1 "ACTIVATE SENSOR".

Press EXIT to return to test mode selection menu "READ DTC".