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Test 3

WARNING: This page does not describe the selected car, but rather 195 other vehicles, including the 2018 Honda Ridgeline, 2018 Honda Pilot, 2018 Honda Odyssey, 2018 Honda HR-V, and 2018 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
  1. Warm engine to normal operating temperature. Operate engine at idle. Attach a vacuum gauge to EGR vacuum hose. Locate EGR vacuum solenoid.
  2. Using a jumper wire, ground signal wire from ECM to EGR vacuum solenoid. Vacuum should be present at EGR vacuum hose. On some models, engine speed may have to be increased 3000-4000 RPM.
  3. Connect a hand-held vacuum pump to EGR valve. Start engine. Apply vacuum to EGR valve. If engine runs rough or stalls, and gauge holds vacuum, EGR valve is functioning properly.
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