Legacy Sedan 4WD F4-2.2L SOHC (1992)
Bypass Air Control Valve Testing
CHECK BYPASS AIR VALVE POWER VOLTAGE (AUTO. TRANS. ONLY)
With ignition "ON," measure voltage between air valve connector terminal (E9)2 and ground. It should read 10V minimum.
CHECK BYPASS AIR VALVE
Disconnect air valve connector and measure resistance between valve terminals as follows:
Terminal:
Resistance:
1-2
9 Ohms
2-3
9 Ohms
CHECK ECU VOLTAGE
With ignition "ON," measure voltage between ECU connector terminals and ground as follows:
Connector & terminal:
Voltage:
(F47)2-Ground
7V
(F47)1-Ground
6V
CHECK HARNESS BETWEEN ECU AND AIR VALVE
1.
Disconnect ECU and air control valve connectors.
2.
Measure resistance between ECU and air control valve connectors and ground as follows:
Connector & terminal:
Resistance:
(F47)2-(E9)1
0 Ohms
(F47)1-(E9)3
0 Ohms
(E9)1-Ground
1M Ohms min.
(E9)3-Ground
1M Ohms min.