If the PCM detects short to battery in heater circuit, the PCM sets a P0052 DTC.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Detects a short to battery | 1. Poor Connection 2. Short to battery in control circuit 3. HO2S(B2/S1) 4. PCM |
Enable Conditions |
•
No disabling Faults
•
Engine Running
•
Battery Voltage between 11V and 16V | |
Threshold value |
•
Short to battery | |
Diagnosis Time |
•
Continuous (More than 5 seconds failure for every 10 seconds test ) | |
MIL On Condition |
•
3 Driving Cycles |
