Other information:
Diagnosis Procedure
CHECK ECV (ELECTRICAL CONTROL VALVE) POWER SUPPLY
Ignition switch OFF.
Disconnect A/C compressor connector.
Ignition switch ON.
Check voltage between A/C compressor harness connector and ground.
+ −
Voltage
(Approx.)
A/C compressor
Connector Terminal
F4
4
Ground
Battery voltage
Is the inspection result normal?
YES>>
GO TO 3...
DTC Description
DTC DETECTION LOGICThe ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2.A three way catalyst (manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2...