Prelude L4-1958cc SOHC (1988)
EGR Control Solenoid Valve: Testing and Inspection
Prelude & 1985-87 Accord W/Fuel Injected Engine
1.
Disconnect wire harness from the number 2 control box.
2.
Disconnect number 10 vacuum hose from the vacuum hose manifold, then connect suitable hand vacuum pump to the hose. Ensure there is air
flow.
3.
If air flow is not present, replace EGR control solenoid valve and retest.
4.
Connect positive lead of a 12 volt battery to black/yellow terminal of number 2 control box and the negative lead to the blue/red terminal on
Accord or red terminal on Prelude.
5.
Apply air pressure to the number 10 vacuum hose. Ensure there is no air flow.
6.
If air flow is present, replace EGR control solenoid valve.
