P3117

Description

This DTC shows a decrease in insulation resistance of the high voltage circuit.
When detecting a decrease in insulation resistance of the high voltage circuit during use of air-conditioner, VCM turns ON/OFF the electric compressor and the PTC elements heater to check changes in insulation resistance and identifies a decrease in insulation resistance of the air-conditioning system.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT
1.Set the vehicle as the following condition and wait at least 30 minutes.





2.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure"
NO- GO TO 3.

3. PERFORM DTC CONFIRMATION PROCEDURE-II

With CONSULT
1.Set the vehicle as the following condition and wait at least 30 minutes.





2.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure"
NO- INSPECTION END


Diagnosis Procedure


1. CHECK A/C REFRIGERANT GAS

Interview the customer and check maintenance records to see if there is possibility that a refrigerant gas other than EV specific refrigerant gas is mixed in A/C refrigerant gas.
NOTE:
If A/C refrigerant gas other than EV specific refrigerant gas is used, insulation resistance may decrease.
Is the inspection result normal?
YES-1 (DTC P3117 is detected during Step 1 of DTC CONFIRMATION PROCEDURE)-Replace electric compressor. Refer to "Removal and Installation" Removal And Installation.
YES-2 (DTC P3117 is detected during Step 1 of DTC CONFIRMATION PROCEDURE)-Replace PTC elements heater. Refer to "Removal and Installation" Removal And Installation.
NO- Change A/C refrigerant gas and compressor oil.