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)

Or, hide this message: temporarily or permanently

Input Switch Code Check




Required Special Tools:
MB991502: Scan Tool MUT-II
MB991529: Diagnostic Trouble Code Check Terminal

CAUTION: To prevent damage to the scan tool MB991502, make sure the ignition switch is "OFF" before connecting or disconnecting the scan tool MB991502.

1. Connect the scan tool or a voltmeter to the data link connector (16-pin) under the instrument panel under cover.
2. Turn the ignition switch "ON."
3. Push the auto-cruise control switch in the direction of arrow (B) in the illustration. Then press the cruise control main switch to the "ON" position, and within 1 second push the cruise control switch back in the direction of arrow (A).




4. Operate each switch listed in the input inspection table and take a reading of the input switch codes with the scan tool or a voltmeter.