P3120

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Set the vehicle to READY and wait at least 1 minutes.
2.Turn ignition switch OFF and wait at least 1 minutes.
3.Turn ignition switch ON.
4.Check DTC.
Is DTC detected?
YES- Proceed to .
NO- INSPECTION END


Diagnosis Procedure


WARNING:
- Because hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.
- Be sure to remove the service plug in order to shut off the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.
- Be sure to put the removed service plug in your pocket and carry it with you so that another person does not accidentally connect it while work is in progress.
- Be sure to wear insulating protective equipment consisting of glove, shoes and glasses before beginning work on the high voltage system.
- Clearly identify the persons responsible for high voltage work and ensure that other persons do not touch the vehicle. When not working, cover high voltage parts with an insulating cover sheet or similar item to prevent other persons from contacting them.
- High Voltage Precautions.

CAUTION:
There is the possibility of a malfunction occurring if the vehicle is changed to READY status while the service plug is removed. Therefore do not change the vehicle to READY status unless instructed to do so in the Service Manual.

1. PRECONDITIONING


WARNING:
Shut off high voltage circuit. How to Cut Off High Voltage.
Check voltage in high voltage circuit. (Check that condenser are discharged.)
1.Remove trunk finisher front. Trunk Room Trim.





2.Remove harness cover (1).









3.Measure voltage between high voltage harness terminals.









CAUTION:
For voltage measurements, use a tester which can measure to 500 V or higher.
- GO TO 2.

2. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-1

1.Disconnect Li-ion battery harness connector.
2.Check the insulation resistance of the following Li-ion battery harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 6.

3. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-2

1.Disconnect following battery junction box harness connector.
2.Check the insulation resistance of battery junction box harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connectors.

4. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-3

1.Disconnect following battery junction box harness connector.
2.Check the insulation resistance of battery junction box harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 8.

5. CHECK DC/DC CONVERTER INSULATION RESISTANCE

1.Disconnect DC/DC converter harness connector.
2.Check the insulation resistance of DC/DC converter. Component Inspection.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace DC/DC converter. DC/DC Converter Disassembly and Assembly.

6. CHECK ELECTRIC COMPRESSOR HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE
1.Disconnect following electric compressor harness connector.
2.Check the insulation resistance of high voltage harness connector. Insulation Resistance.

3.Check whether there are neither a water infiltration mark nor a defective seal in the high voltage harness connector.
Is the inspection result normal?
YES- GO TO 7.
NO- Replace high voltage harness connector.

7. CHECK ELECTRIC COMPRESSOR INSULATION RESISTANCE

Check insulation resistance of electric compressor. Electric Compressor Insulation Resistance Check.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace electric compressor. Removal and Installation.

8. CHECK INSULATION RESISTANCE OF TRACTION MOTOR INVERTER HIGH VOLTAGE HARNESS

CONNECTOR
1.Disconnect following traction motor inverter harness connector.
2.Check the insulation resistance of high voltage harness connector. Insulation Resistance.





3.Check whether there are neither a water infiltration mark nor a defective seal in the high voltage harness connector.
Is the inspection result normal?
YES- GO TO 9.
NO- Replace high voltage harness connector.

9. CHECK TRACTION MOTOR INSULATION RESISTANCE

Check insulation resistance of traction motor inverter. Component Tests and General Diagnostics.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace traction motor inverter. Removal and Installation.