General Description

The ECM provides a 5volt reference voltage to Throttle Position Sensor 2(TPS2). The ECM monitors reference voltage deviation from the power supply circuit of the sensors.

DTC Description

Checking the voltage from sensor power supply every 1.87 sec. under detecting condition, if the value within detecting condition lasts for more than 0.2 sec., PCM sets P0651. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Sensor reference voltage check

● Short in sensor power supply line

● Faulty PCM

Enable Conditions

● IG Key "ON"

Threshold Value

● Sensor supply power < 4.5V or > 5.5V

Diagnosis Time

● Continuous (More than 0.2 seconds failure for every 1.87 seconds test )

MIL ON Condition

● 2 driving cycles

Schematic Diagram
note
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