P1409 - Exhaust Gas RECIRCULATION (EGR) Vacuum Regulator Solenoid Circuit
P1409 - EXHAUST GAS RECIRCULATION (EGR) VACUUM REGULATOR SOLENOID CIRCUIT
| Description: | This test checks the electrical function of the EGR vacuum regulator solenoid. The test fails when the EVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed. | |||
| Possible Causes: |
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| Diagnostic Aids: | The EGR vacuum regulator solenoid resistance is between 26 and 40 ohms. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| Vehicles with an EGR system module (ESM) | refer to PINPOINT TEST HH . | |||
| All others | refer to PINPOINT TEST HE . | |||