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 M

PINPOINT TEST M: THE KEYLESS ENTRY KEYPAD ILLUMINATION IS INOPERATIVE


Test M1:






Test M1-M3:






Test M3-M5:






Normal Operation
When the keypad illumination is activated, the smart junction box (SJB) supplies power to circuit 66 (LB) to illuminate the keypad. The keypad illumination is grounded through circuit 1205 (BK).

Possible Causes
- DTC B1626 keypad lamp output short circuit to ground
- circuit 66 (LB) open or shorted to ground
- circuit 1205 (BK) open
- keyless entry keypad
- SJB