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

Air Injection Pump Relay: Testing and Inspection

Check for continuity between the terminals according to the table.
- There should be continuity between the A1 and A2 terminals of the air pump relay 2P large connector when power and ground are connected to the B1 and B2 terminals of the air pump relay 2P small connector.
- There should be no continuity between the A1 and A2 terminals when power is disconnected from the air pump 2P small connector.