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

All Doors Fail to Lock

Test 1 - 4:




Test 5:






SYMPTOM
ALL DOORS FAIL TO LOCK

POSSIBLE CAUSES
- Door lock relay output circuit short to ground
- Decklid release relay output short to door lock relay output
- Decklid release relay output short to driver door unlock relay output
- Decklid release relay output short to door unlock relay output
- Remote keyless entry module - unlock ground open