FixVault

Diagnostic Method

Detect a malfunction by measuring the time from fuel cut completed until the rear oxygen sensor voltage begins to rise.

G13596732Courtesy of SUBARU OF AMERICA, INC.

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Output voltage value of rear oxygen sensor Less than 0.2V
Elapsed time More than value of Map
INTAKE AIR AMOUNT - MAP

Amount of intake air (g/s (oz/s)) 20.00 (0.71) 21.00 (0.74) 22.00 (0.78) 26.00 (0.92) 30.00 (1.06) 40.00 (1.41)
Elapsed time (ms) 4500 4000 4000 4000 4000 4000

Time needed for diagnosis:  Less than 1 s

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.