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SEF308XB
Overall Function Check
NHEC0091
Use this procedure to check the overall function of the heated oxy-
gen sensor 1 (front) circuit. During this check, a 1st trip DTC might
not be confirmed.
WITH GST
NHEC0091S01
1) Start engine and warm it up to normal operating temperature.
2) Set voltmeter probes between ECM terminal 63 [HO2S1 (B1)
signal] or 62 [HO2S1 (B2) signal] and engine ground.
3) Check the following with engine speed held at 2,000 rpm con-
stant under no load.
I The voltage does not remain in the range of 0.2 - 0.4V.
4) If NG, go to “Diagnostic Procedure”, EC-197.
DTC P0130 (BANK 1), P0150 (BANK 2) HO2S1 (FRONT) (CIRCUIT)
Overall Function Check
EC-194
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