Li-Ion Battery Controller Diagnosis Procedure

POWER SUPPLY AND GROUND CIRCUIT

LI-ION BATTERY CONTROLLER : 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 gear 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. CHECK FUSE

Check that the 10A fuse (No.64) is not fusing.
NOTE:
Fuse, Fusible Link and Relay Box for fuse layout.
Is the fuse fusing?
YES- GO TO 2.
NO- Replace the fuse after repairing the applicable circuit.

2. CHECK POWER SUPPLY-1

Check voltage between Li-ion battery harness connector and ground.





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

3. CHECK POWER SUPPLY-2

1.Disconnect Li-ion battery harness connector.
2.Check voltage between Li-ion battery harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK GROUND

Check installation status of ground (B264). Circuit Inspection.
Is the inspection result normal?
YES- GO TO 5.
NO- Recover the installation status of Ground.

5. CHECK GROUND CIRCUIT-1

Check continuity between Li-ion battery harness connector and ground.





Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace error-detected parts.

6. PRECONDITIONING


WARNING:
Shut off high voltage circuit. How to Cut Off High Voltage.
Remove Li-ion battery. Removal and Installation.
- GO TO 7.

7. CHECK POWER SUPPLY CIRCUIT

Check continuity between Li-ion battery harness connector and Li-ion battery controller harness connector.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.

8. CHECK GROUND CIRCUIT-2

Check continuity between Li-ion battery harness connector and Li-ion battery controller harness connector.





Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace error-detected parts.