Component Inspection

INSULATION RESISTANCE

Component Inspection


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 gear consisting of glove, shoes and glasses/face shield 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.
Remove Li-ion battery. Removal and Installation.
- GO TO 2.

2. CHECK LI-ION BATTERY INSULATION RESISTANCE


CAUTION:
Unlike the ordinary tester, the insulation resistance tester applies 500V when measuring. If used incorrectly, there is the danger of electric shock. If used in the vehicle 12V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.
1.Disconnect Li-ion battery controller harness connector.

WARNING:
Immediately insulate disconnected high voltage connectors and terminals with insulating tape.
2.Remove front battery cover from Li-ion battery. Exploded View.
3.Check insulation resistance between Li-ion battery positive terminal (A)/negative terminal (B) and lower battery cover metallic part (C), using an insulation resistance tester.






CAUTION:
- Be sure to set the insulation resistance tester to 500V when performing this test.
- Using a setting higher than 500V can result in damage to the component being inspected.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace Li-ion battery (battery pack). Removal and Installation.