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

Test G: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad

PINPOINT TEST G: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPAD


G1-G6:






G6-G8:






Normal Operation
The smart junction box (SJB) sends voltage signals to the keyless entry keypad through circuits CPK29 (GY/BU), CPK30 (VT/GN), and CPK31 (YE/GN). When a button is pressed on the keypad, one or more of the voltage signals is routed to ground through circuit GD133 (BK). Based on the input received, the SJB is able to determine which number on the keypad is pressed.

DTC B2A26 - is an on-demand DTC that sets when the SJB detects a short to ground from any of the keypad input circuits.

Possible Causes
- Circuit CPK29 (GY/BU) open or short to ground
- Circuit CPK30 (VT/GN) open or short to ground
- Circuit CPK31 (YE/GN) open or short to ground
- Circuit GD133 (BK) open
- Keyless entry keypad
- SJB