DTC P0418 Secondary Air Injection System Control "A" Circuit: Description
Refer to DTC P0412
.
DTC DETECTION CONDITION CHART
| DTC No. |
DTC Detection Condition |
Trouble Area |
| P0418 |
Both of the following conditions are met, when idling just after cold start (1 trip detection logic):
- Air injection (AIR) system does not operate
- Air injection control driver (AID) outputs air pump malfunction signal (20% duty signal)
|
- Open in air pump drive circuit
- Short between air pump circuit and +B circuit
- Air pump
- Air injection control driver (AID)
- ECM
|
| P0418 |
Both of the following conditions are met, when idling just after cold start (1 trip detection logic):
- Air injection (AIR) system operates
- Air injection control driver (AID) outputs air pump malfunction signal (20% duty signal)
|
- Short between air pump circuit and body ground
- Air pump
- AID
- ECM
|