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DTC P0133, P0153 HO2S1 EC-779 [VG33E] C D E F G H I J K L M A EC 7. Make sure that “OK” is displayed after touching “SELF-DIAG Overall Function Check UBS00DHZ Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a WITH GST 1. Start engine and warm it up to normal operating temperature. 2. Set voltmeter probes between ECM terminal 50 [HOS1 (B1) sig- 3. Check the following with engine speed held at 2,000 rpm con- – The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more 4. If NG, go to EC-783, "Diagnostic Procedure" SEF658Y 1 time: 0 - 0.3V → 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 SEF919UA |