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4 CHECK HEATED OXYGEN SENSOR 1 HEATER
1. Stop engine.
2. Disconnect HO2S1 harness connector.
3. Check resistance between HO2S1 terminals as follows.
SEF310X
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 (With CONSULT-II) © GO TO 5.
OK (Without CONSULT-
II)
© GO TO 6.
NG © Replace malfunctioning heated oxygen sensor 1.
DTC P1143, P1163 HO2S1
Diagnostic Procedure (Cont’d)
EC-496
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