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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Test K: The Smart Unlock Does Not Operate Correctly

PINPOINT TEST K: THE SMART UNLOCK DOES NOT OPERATE CORRECTLY

Normal Operation
Smart unlock automatically unlocks the driver door if the key is in the ignition and the driver door is open when the vehicle is locked using the driver door lock control switch. The vehicle may still be locked with the key in the ignition using the manual lock button, a remote keyless entry (RKE) transmitter, the keyless entry keypad or a key in the driver door lock cylinder.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Driver door ajar switch
- Key-in-ignition switch
- Universal asynchronous receiver-transmitter (UART)-based protocol (UBP) communications network
- Vehicle security module (VSM)


K1:






K2-K4: