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

EGR Control Solenoid: Testing and Inspection

ELECTRIC EGR TRANSDUCER SOLENOID CHECK

NOTE: When disconnecting the vacuum hose, place an identification mark on it for proper re-connection.

1. Disconnect the vacuum hose from the electric EGR transducer.
2. Disconnect the harness connector.




3. Plug nipple (A).
4. Connect the hand vacuum pump to nipple (B).
5. Connect a positive pressure-type hand pump to nipple (C).
6. Use a jumper wire to connect the solenoid terminal to the battery terminal.




7. Turn the negative battery terminal side jumper wire on and off and apply vacuum and positive pressure to check the air tightness.




8. Measure the resistance between the solenoid terminals.

Standard value: 31 - 41 ohms [at 20 °C (68 °F)]

9. Replace solenoid if resistance is out of specification.