| DETECTION CONDITION |
- The PCM monitors the A/F sensor signal voltage at PCM terminal 2Z. If the either of the following condition is met, the PCM determines that the A/F sensor reference voltage circuit is open.
- The PCM terminal 2Z voltage is specified voltage or more for 5 s
.
- The PCM detects DTC P0030:00 or P0134:00 while the pending code P2243:00 is stored.
MONITORING CONDITIONS
- EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode
- Following conditions are met:
- Engine is running or ignition switch is ON
- Battery voltage: 11-18 V
- A/F sensor element impedance: below 220 ohm
Diagnostic support note
- This is a continuous monitor (A/F sensor, HO2S).
- The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycle or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- The DTC is stored in PCM memory.
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