
MPI –
Troubleshooting
13-46
INSPECTION PROCEDURE 36
Secondary air control solenoid valve system
Probable cause
The secondary air control solenoid valve switches the pressure introduction into the
secondary air valve between the intake manifold and atmosphere.
D
Malfunction of solenoid valve
D
Improper connector contact, open or short-circuited
harness wire
D
Malfunction of engine-ECU
NG
Replace the engine-ECU.
OK
Check trouble symptom.
NG
Check the harness wire between engine-ECU and solenoid valve
connector, and repair if necessary.
OK
Check trouble symptom.
NG
Check the harness wire between control relay and solenoid valve
connector, and repair if necessary.
OK
Check trouble symptom.
OK
Check the following connector: B-59
NG
Repair
OK
Measure at the engine-ECU connector B-59.
D
Disconnect the connector, and measure at the harness side.
D
Voltage between 6 and earth
(Ignition switch: ON)
OK: System voltage
NG
Check the following connectors:
A-127, A-88
NG
Repair
OK
Measure at the secondary air control solenoid connector A-127.
D
Disconnect the connector, and measure at the harness side.
D
Voltage between 1 and earth
(Ignition switch: ON)
OK: System voltage
NG
Check the following connector: A-88
NG
Repair
Check the secondary air control solenoid valve.
(Refer to Group 15 – INTAKE AND EXHAUST.)*
NG
Replace
NOTE
*:
Refer to Workshop Manual for LANCER EVOLUTION-IV and EVOLUTION-V (Pub. No. S9806CNCP9).