If output voltage of APS 1 is below threshold value for more than 0.18 sec., ECM sets DTC P21220000. This fault might be caused by short to ground in power/signal circuit or open in power circuit of APS.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Voltage monitoring | 1. Open or short to ground in power circuit of APS1 2. Open in power circuit of APS1 3. Short to ground in signal circuit of APS 1 4. Defected APS | |
Enable Conditions |
•
Engine running | ||
Threshold Value |
•
Output voltage is below threshold value | ||
Diagnostic Time |
•
0.18 sec | ||
Fail Safe | Engine OFF |
•
No | |
EGR Off |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
On | ||
