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10 CHECK HEATED OXYGEN SENSOR 1
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “MANU TRIG” and “HI SPEED” in “DATA MONITOR” mode with CONSULT-II, and select “HO2S1 (B1)/(B2)” and
“HO2S1 MNTR (B1)/(B2)”.
3. Hold engine speed at 2,000 rpm under no load during the following steps.
4. Touch “RECORD” on CONSULT-II screen.
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5. Check the following.
I “HO2S1 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:
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I “HO2S1 (B1)/(B2)” voltage goes above 0.6V at least once.
I “HO2S1 (B1)/(B2)” voltage goes below 0.3V at least once.
I “HO2S1 (B1)/(B2)” voltage never exceeds 1.0V.
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CAUTION:
I 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.
I Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool
J-43897-18 or J-43897-12 and approved anti-seize lubricant.
OK or NG
OK © GO TO 12.
NG © Replace malfunctioning heated oxygen sensor 1.
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO.1-6CYLINDER
MISFIRE
Diagnostic Procedure (Cont’d)
EC-322
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