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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All Doors Fail to Lock From Any Switch

Test 1 - 4:

Test 5 - 9:

SYMPTOM
ALL DOORS FAILING TO LOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Fused B(+) circuit in junction block
- Lock relay output circuit shorted to ground
- Door lock relay-open/shorted coil
- Door lock relay-shorted terminals
- Door unlock relay ground open
- Door unlock relay ground circuit open
- Junction block-lock relay control circuit open
- Body control module - lock relay control open