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DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER EC-175 C D E F G H I J K L M A EC Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- : Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) TER- MINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage) 2 OR A/F sensor 1 heater [Engine is running] ● Warm-up condition ● Idle speed Approximately 5V 16 W A/F sensor 1 (bank 1) [Engine is running] ● Warm-up condition ● Idle speed Approximately 3.1V 35 R Approximately 2.6V 56 R/L Approximately 2.3V 75 BR Approximately 2.3V PBIB1584E |