| DTC P0666:00 |
ECU internal temperature sensor circuit malfunction |
| DETECTION CONDITION |
- Under the following condition, there is malfunction in circuit of ECU internal temperature sensor:
- Battery voltage is 8 V or more
.
Diagnostic support note
- The check engine light illuminates if the TCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the TCM.
- The automatic transaxle warning light illuminates if the TCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the TCM.
- PENDING CODE is available.
- FREEZE FRAME DATA is available.
- DTC is stored in the TCM memory.
|
| FAIL-SAFE FUNCTION |
- Inhibits learning control.
- Inhibits neutral idle control.
|
| POSSIBLE CAUSE |
- Control valve body malfunction
- ECU internal temperature sensor (built-into TCM) malfunction
|
| SYSTEM WIRING DIAGRAM |
Not applicable |