Diagnosis Procedure
Since 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 disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.
- The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.
- Be sure to wear insulating protective equipment before beginning work on the high voltage system.
- Never allow workers other than the responsible person to touch the vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.
- Refer to HIGH VOLTAGE PRECAUTIONS .
Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Information. A malfunction may occur if this is not observed.
- PERFORM SELF-DIAGNOSIS
WITH CONSULT
- Perform "All DTC Reading" with CONSULT.
- Check if the "P3049 - P3060" is detected in "Self Diagnostic Result" of "HV BAT".
Is P3049 - P3060 detected?
YES
Perform diagnosis procedure of applicable DTC.
NO
GO TO STEP 2 .
- PRECONDITIONINGWARNING:
Follow the instructions below before starting the procedure.
- Disconnect high voltage circuit. Refer to HOW TO DISCONNECT HIGH VOLTAGE .
- Check voltage in high voltage circuit. Refer to CHECK VOLTAGE IN HIGH VOLTAGE CIRCUIT .
GO TO STEP 3 .
- CHECK CELL VOLTAGE DETECTION HARNESS
- Remove Li-ion battery. Refer to REMOVAL AND INSTALLATION .
- Refer to below table and check connection status of connectors and continuity between Li-ion battery controller and Module, according to detected DTC.
DTC Trouble diagnosis name Cell detection voltage harness Module Li-ion battery controller Continuity Connector Terminal Connector Terminal P308B CELL CONTROLLER ASIC1 OPEN Cell 1 - 4 voltage detection harness - High voltage harness of Module 1 LB3 33 Existed LB8 1 50 LB7 2 34 LB8 3 51 LB7 4 35 P308C CELL CONTROLLER ASIC2 OPEN Cell 5 - 8 voltage detection harness LB7 4 LB3 35 Existed LB8 5 52 LB7 6 36 LB8 7 53 LB7 8 37 P308D CELL CONTROLLER ASIC3 OPEN Cell 9 - 12 voltage detection harness LB7 8 LB3 37 Existed LB10 1 54 LB9 2 38 LB10 3 55 LB9 4 39 P308E CELL CONTROLLER ASIC4 OPEN Cell 13 - 16 voltage detection harness LB9 4 LB3 39 Existed LB10 5 56 LB9 6 40 LB10 7 57 LB9 8 42 P308F CELL CONTROLLER ASIC5 OPEN Cell 17 - 20 voltage detection harness LB9 8 LB3 42 Existed LB12 1 58 LB11 2 43 LB12 3 59 LB11 4 44 P3090 CELL CONTROLLER ASIC6 OPEN Cell 21 - 24 voltage detection harness LB11 4 LB3 44 Existed LB12 5 60 LB11 6 45 LB12 7 61 LB11 8 46 P3091 CELL CONTROLLER ASIC7 OPEN Cell 25 - 28 voltage detection harness LB11 8 LB3 46 Existed LB14 1 62 LB13 2 47 LB14 3 63 LB13 4 48 P3092 CELL CONTROLLER ASIC8 OPEN Cell 29 - 32 voltage detection harness LB13 4 LB3 48 Existed LB14 5 LB4 77 LB13 6 65 LB14 7 78 LB13 8 66 P3093 CELL CONTROLLER ASIC9 OPEN Cell 33 - 36 voltage detection harness LB13 8 LB4 66 Existed LB16 1 80 LB15 2 69 LB16 3 81 LB15 4 70 P3094 CELL CONTROLLER ASIC10 OPEN Cell 37 - 40 voltage detection harness LB15 4 LB4 70 Existed LB16 5 82 LB15 6 71 LB16 7 83 LB15 8 72 P3095 CELL CONTROLLER ASIC11 OPEN Cell 41 - 44 voltage detection harness LB15 8 LB4 72 Existed LB18 1 84 LB17 2 73 LB18 3 85 LB17 4 74 P3096 CELL CONTROLLER ASIC12 OPEN Cell 45 - 48 voltage detection harness LB17 4 LB4 74 Existed LB18 5 86 LB17 6 75 LB18 7 87 LB17 8 76 Is the inspection result normal?
YES
Replace Li-ion battery controller. Refer to DISASSEMBLY AND ASSEMBLY .
NO
Replace cell voltage detection harness.