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EC-826 < COMPONENT DIAGNOSIS > [MR18DE] P0134 HO2S1 6. Check the following. - “HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes from 5 times (cycles) are counted as shown in the figure. - “HO2S1 (B1)” voltage goes above 0.6V at least once. - “HO2S1 (B1)” voltage goes below 0.3V at least once. - “HO2S1 (B1)” voltage never exceeds 1.0V. CAUTION: • Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m • Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Is the inspection result normal? YES >> INSPECTION END NO >> GO TO 3. 3. CHECK HEATED OXYGEN SENSOR 1 Without CONSULT-III 1. Start engine and warm it up to normal operating temperature. 2. Check the voltage between ECM harness connector terminals as follows under the following condition. 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. • Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool and approved anti-seize lubricant. Is the inspection result normal? YES >> INSPECTION END NO >> GO TO 4 4. REPLACE HEATED OXYGEN SENSOR 1 Replace heated oxygen sensor 1. CAUTION: SEF217YA JMBIA0352ZZ (+) (–) Condition Voltage Connector Terminal Connector Terminal F11 49 (HO2S1 signal) E11 56 Engine speed held • The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more than 5 times within 10 seconds. • The maximum voltage is over 0.6V at least 1 time. → 0.6 - 1.0V → 0 - 0.3V 2 times: 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V → 0.6 - 1.0V → 0 - 0.3V |