The PCM provides a 5volt reference voltage to the Air-con Pressure Transducer(APT). The PCM monitors reference voltage deviation from the power supply circuit of the APT.
PCM sets DTC P06A4 if the PCM detects reference voltage of APT is lower than threshold value.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
•
Electrical check | 1. Short to ground in power circuit 2. Poor connection or damaged harness 3. Faulty APT |
Enable Conditions |
•
IG "ON" | ||
Threshold Value |
•
Short to ground
•
APT power supply voltage < 0.7 V | ||
Case 2 | DTC Strategy |
•
Electrical check | |
Enable Conditions |
•
IG ON | ||
Threshold Value |
•
Sensor or harness problem
•
0.7 V ≤ APT power supply voltage < 4.5 V | ||
Diagnostic Time |
•
0.1 sec. | ||
Mil On Condition |
•
1 driving cycle | ||
( ※ APT : Air-Con Pressure Transducer )
