To VIN # 350000
FRONT HEATED OXYGEN SENSORWith CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Select "MANU TRIG" and "HI SPEED" in "DATA MONITOR" mode with CONSULT. and select "FR O2 SEN-B1 (-B2)" and "FR O2 MNTR-B1 (-B2)".
(3) Hold engine speed at 2,000 rpm under no load during the following steps.
(4) Touch "RECORD" on CONSULT screen.
(5) Check the following.
- "FR O2 MNTR-B1 (-B2)" in "DATA MONITOR" mode changes from "RICH" to "LEAN" to "RICH" 5 times in 10 seconds.
5 times (cycles) are counted as shown left:
R = "FR O2 MNTR-B1 (-B2)", "RICH"
L = "FR O2 MNTR-B1 (-B2)", "LEAN"
- "FR O2 SEN-B1 (-B2)" voltage goes above 0.6 V at least once.
- "FR O2 SEN-B1 (-B2)" voltage goes below 0.3 V at least once.
- "FR O2 SEN-B1 (-B2)" voltage never exceeds 1.0 V.
CAUTION: Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
Without CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Set voltmeter probes between ECM terminal 50 (right bank sensor signal) or 51 (left bank sensor signal) and engine ground.
(3) Check the following with engine speed held at 2,000 rpm constant under no load.
- MIL goes on more than 5 times within 10 seconds in Diagnostic Test Mode II (FRONT HEATED OXYGEN SENSOR MONITOR).
- The maximum voltage is over 0.6 V at least one time.
- The minimum voltage is below 0.3 V at least one time.
- The voltage never exceeds 1.0 V.
CAUTION: Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.