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Home >> Subaru >> 1988 >> RX 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> SPFI CEC System >> Trouble Shooting >> General Information

General Information

The self-diagnosis system detects and indicates faults in various inputs and outputs of electronic control. The warning light (ECS light) on the instrument panel, indicates that a fault has occurred in the system. The Light Emitting Diode (LED) in the control unit indicates a trouble code has been set. See Fig 1 . If such a failure of sensors should occur, the fail-safe function is provided to ensure minimal driveability.

RELATION BETWEEN MODES & CONNECTORS

Mode Type (1) Read Memory Connector Test Mode Connector
U-Check Disconnect Disconnect
Read Memory Connect Disconnect
D-Check Disconnect Connect
Clear Memory Connect Connect
(1) With ignition on, and engine running in clear memory mode. With ignition on, engine off on all other modes.
Fig 1: Trouble Code Light Location
G42820Courtesy of SUBARU OF AMERICA, INC.