DTC Detection Logic
NOTE:
If DTC P1078 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
"DTC LOGIC ". DTC DETECTING CONDITION AND POSSIBLE CAUSE REFERENCE
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| P1078 |
Exhaust valve timing control position sensor (bank 1) circuit |
An excessively high or low voltage from the sensor is sent to ECM. |
- Harness or connectors [EVT control position sensor (bank 1) circuit is open or shorted)
- Exhaust valve timing control position sensor
- Crankshaft position sensor (POS)
- Camshaft position sensor (PHASE) (bank 1)
- Accumulation of debris to the signal pick-up portion of the camshaft
|
| P1084 |
Exhaust valve timing control position sensor (bank 2) circuit |
- Harness or connectors [EVT control position sensor (bank 2) circuit is open or shorted)
[CKP sensor (POS) circuit is shorted.]
[CMP sensor (PHASE) (bank 2) circuit is shorted.]
(Battery current sensor circuit is shorted.)
(APP sensor 2 circuit is shorted.)
(EVAP control system pressure sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is shorted.)
- Exhaust valve timing control position sensor (bank 2)
- Crankshaft position sensor (POS)
- Camshaft position sensor (PHASE) (bank 2)
- Battery current sensor
- Accelerator pedal position sensor
- EVAP control system pressure sensor
- Refrigerant pressure sensor
- Accumulation of debris to the signal pick-up portion of the camshaft
|