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

XB122 - Check VCRM

- Key "OFF".

- Disconnect Variable Control Relay Module (VCRM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Key "ON".

- Is fuel pump off?

Yes -- Key "OFF". Replace VCRM. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Key "OFF". Go to XB123. XB123 - Check HFP Relay and Circuits