Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1995 >> Protege L4-1839cc 1.8L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> EGR Valve Position Sensor >> Testing and Inspection
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 Valve Position Sensor: Testing and Inspection

Inspection
1. Remove the air intake hose.
2. Disconnect the EGR valve position sensor connector.




3. Measure the resistance between terminals A and B by using an ohmmeter.

Specification: 2.7 k Ohms

4. If not as specified, replace the EGR valve.
5. Connect the EGR valve position sensor connector.
6. Connect the air intake hose.




7. Connect the SSTs to the PCM.




8. Disconnect the vacuum hose from the vacuum tube and install a vacuum pump to the valve.
9. Turn the ignition switch to ON.
10. Measure the voltage at the PCM terminal 3J.
11. If not as specified, inspect the harness and connector between the EGR valve position sensor and the PCM terminal.
12. If these harness and connector are OK, replace the EGR valve.

pro multis · About Operation CHARM