If difference in actual and target value or low voltage and high current is detected, ECM sets DTC P21010000. This fault might be caused by short to ground in motor (+), short to power in motor (-), or open in control circuit.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Voltage monitoring | 1. Open in control circuit of ACV 2. Short to ground in control (+) circuit of ACV 3. Short to power in control (-) circuit of ACV 4. Defected ACV | |
Enable Condition |
•
Engine running | ||
Threshold Valu | Case 1 |
•
Difference in actual and target value is detected | |
Case 2 |
•
Low voltage error on ACV
•
High current error on ACV | ||
Detecting Time |
•
2 sec. (Case 2) | ||
Fail Safe | Engine OFF |
•
No | |
EGR OFF |
•
No | ||
Torque Limit |
•
Yes | ||
MIL |
•
Off (Case 1)
•
On (Case 2) | ||
