| DESCRIPTION |
A/F sensor circuit low input |
| DETECTION CONDITION |
Determination conditions |
- Any one of the following conditions is met:
- Voltage of A/F sensor terminal F is less than specified value
- Voltage of A/F sensor terminal D is less than specified value
- Voltage of A/F sensor terminal B is less than specified value
|
| Preconditions |
- Switch the ignition ON (engine off or on)
- Battery voltage: 11-18 V *1
- The following DTC is not detected:
- Internal PCM malfunction: P064D:00
*1
: Value can be verified by displaying PIDs using M-MDS |
| Drive cycle |
|
| Self test type |
- CMDTC self test, KOER self test
|
| Sensor used |
|
| FAIL-SAFE FUNCTION |
- Fixes duty value of A/F sensor heater
- Stops fuel feedback control of A/F sensor
|
| VEHICLE STATUS WHEN DTCs ARE OUTPUT |
- Illuminates check engine light.
|
| POSSIBLE CAUSE |
- A/F sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- A/F sensor terminal F-PCM terminal 1W
- A/F sensor terminal D-PCM terminal 1AB
- A/F sensor terminal B-PCM terminal 1AG
- A/F sensor malfunction
- PCM malfunction
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