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FI
FUEL INJECTION SYSTEM
Fault code No. Er-4 Symptom Non-registered data has been received from the meter.
Used diagnostic code No. --
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
Open or short circuit in wiring harness and/or
sub lead.
Repair or replace if there is an open or short
circuit.
Between sensor coupler and ECU coupler
Yellow/Red - Yellow/Red
Black/White - Black/White
Reinstated by turn-
ing the main switch
ON.
Connected condition of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
Cylinder identification sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler
Malfunction in meter Replace the meter.
Malfunction in ECU Replace the ECU.