EGR Valve Lift Sensor
- Connect EGR Valve Lift Sensor Test Harness (07GMJ-ML80100
) between EGR valve lift sensor and engine wire harness. See Fig 1
. Turn on ignition. Using a voltmeter, measure voltage between Red (positive) terminal and Green (negative) terminal.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
- If voltage reading is approximately 5 volts, go to next step. If voltage is not as specified, repair open in Yellow/White wire and/or Green/White wire between EGR valve and ECU.
- Measure voltage between White (positive) terminal and Green (negative) terminal. If voltage reading is approximately 1.0 volts, go to next step. If voltage is not as specified, check for short in White/Black or Yellow wires between ECU and EGR valve lift sensor. If wiring is okay, replace EGR valve.
- Disconnect vacuum hose from EGR valve, and connect vacuum pump to EGR valve. While observing voltmeter, slowly apply 8 in. Hg to EGR valve. If voltage increases smoothly from 1.0-4.0 volts as vacuum is applied to EGR valve, EGR valve lift sensor is okay. If voltage does not increase smoothly, replace EGR valve.