EGR Valve Position Sensor: Testing and Inspection

System Inspection




1. Connect the SSTs (NGS) to the DLC-2.




2. Disconnect the vacuum hose from the EGR valve and connect the vacuum pump to the EGR valve.
3. Turn the ignition switch to ON.
4. Select the "PID/DATA MONITOR AND RECORD" function on the NGS display.




5. Select "EGRP V" on the NGS display and press START. The NGS measures and shows the voltage.
- If the harnesses are okay, replace the EGR valve.
- If not as specified, inspect the harness between EGR valve position sensor and PCM.

Inspection

1. Disconnect the EGR valve position sensor connector.
2. Disconnect the vacuum hose from the EGR valve and connect the vacuum Dump to the EGR valve.







3. Use an ohmmeter to measure the resistance between the terminals as shown in the table.
- If not as specified. replace the EGR valve.