The PCM provides a 5 volt reference voltage to the Throttle Position Sensor(TPS). The PCM monitors reference voltage deviation from the power supply circuit of the TPS.
PCM sets DTC P0653 if the PCM detects reference voltage higher than threshold value.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical Check | 1. Short to battery in Power circuit 2. Poor connection or damaged harness 3. Faulty ETC |
Enable Conditions |
•
Ignition "ON" | |
Threshold Value |
•
Short to battery
•
TPS power supply voltage > 5.5V | |
Diagnostic Time |
•
0.04 sec. | |
MIL On Condition |
•
1 driving cycle | |
Limp-Home |
•
Forced limited RPM mode : The PCM limits engine speed to 1500rpm
•
Electrical check of the ETC system is prohibited |
