Checking output signals from TPS under detecting condition, if the difference between real and target throttle position is above the specified value, ECM sets P0638.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Limp-home check | 1. Throttle stuck 2. Open in motor circuit 3. Faulty motor 4. Faulty ECM |
Enable Conditions |
•
IG On
•
Battery voltage is higher than 8V | |
Threshold Value |
•
When the difference between actual and target throttle position is higher than limit value after ETC motor drives. | |
Diagnostic Time |
•
0.5 sec | |
MIL ON Condition |
•
5 sec |
