EGR COOLER BYPASS CONTROL SOLENOID VALVE CHECK



 1.Disconnect the vacuum hoses from the EGR cooler bypass control solenoid valve.
2.Disconnect the harness connector.

3.Connect a hand vacuum pump to nipple (A) of the EGR cooler bypass control solenoid valve.
4.As described in the chart below, check airtightness by applying a vacuum with voltage applied directly from the battery to the EGR cooler bypass control solenoid valve, and without applying voltage.
BATTERY POSITIVE VOLTAGE
 NIPPLE (B) CONDITION
 NORMAL CONDITION
Applied
 Open
 Vacuum leaks
Closed
 Vacuum maintained
Not applied
 Open
 Vacuum maintained

5.Measure the resistance between terminal No. 1 and No. 2.
Standard value: 29 - 35 Ω (at 20°C)
6.Replace the solenoid if airtightness or resistance is out of specification.