X0460

Hybrid/EV Battery Cooling Performance Decrement

History of poor HV battery cooling performance

Vehicle Control History Data:

Countermeasures:

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X0540

Ready ON Prevention

Incorrect HV battery is installed

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

"Hi" is displayed for both of these items when they are normal.

If "Lo" is displayed for either item, the ignition switch cannot be turned to ON (READY) due to an incorrect HV supply stack sub-assembly having been installed.

Countermeasures:

Replace the HV supply stack sub-assembly with a correct one.

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Incorrect ECM is installed

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

Number of Hybrid Battery Mismatch Judgment with Engine ECU

"0" is displayed for this item when it is normal.

If a value of "3" or higher is displayed for this item, the ignition switch cannot be turned to ON (READY) due to an incorrect ECM having been installed.

Countermeasures:

Check the part number and replace the ECM with a correct one.

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Battery diagnosis request was ignored

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

Hybrid/EV Battery Check Status Light Request

If a value of "6" or higher is displayed for this item and no other conditions are preventing the ignition switch from being turned to ON (READY), the ignition switch cannot be turned to ON (READY) due to Battery Diagnosis not being performed and the vehicle being driven for a certain amount of time after message rearding traction battery ("Have Traction Battery Inspected", "Maintenance Required For Traction Battery At Your Dealer", etc.) was displayed on the multi-information display.

Countermeasures:

Perform Battery Diagnosis using the GTS.

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High voltage wire harness between HV supply stack sub-assemblies is disconnected

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

High Voltage Line between Stack Engaged

If "ON" is displayed for this item, the ignition switch cannot be turned to ON (READY) as the high voltage wire harness connecting 2 or more HV supply stack sub-assemblies is disconnected.

Countermeasures:

Inspect the high voltage wire harnesses connecting the HV supply stack sub-assemblies.

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Excessive engine cranking requests when HV battery cannot be used

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

Number of Cranking when No Hybrid/EV Battery

If a value higher than "15" is displayed for this item, the ignition switch cannot be turned to ON (READY) as engine cranking operation requests have exceeded a threshold when the HV battery could not be used.

Countermeasures:

Repair the malfunctions indicated by the output DTCs and clear the DTCs.

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Extremely low HV battery temperature judgment

(The ignition switch does not turn to ON (READY).)

Vehicle Control History Data:

Hybrid Battery Extremely Low Temperature Judgment

If "ON" is displayed for this item, the ignition switch cannot be turned to ON (READY) as the temperature of the HV battery is extremely low.

The values of "HV Battery Temperature 1 to 6" and "Hybrid/EV Battery Cooling Fan Intake Air Temperature 1" can be used as a reference.

Countermeasures:

Wait for the HV battery temperature to increase.

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High HV battery cell voltage

(The ignition switch is slow to turn to ON (READY).)

Vehicle Control History Data:

Countermeasures:

Perform troubleshooting for any DTCs that are output.

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Low HV battery cell voltage

(The ignition switch is slow to turn to ON (READY).)

Vehicle Control History Data:

Countermeasures:

Perform troubleshooting for any DTCs that are output.

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X0570

Limit to Charge / Discharge Control Value by Hybrid/EV Battery

Stores a history of discharging power or limiting the charging to protect the service life and for safety if used daily for extended periods, such as when driven for a long period of time or charged repeatedly.

Vehicle Control History Data:

Check the vehicle usage conditions and explain to the user that it is related to a protective function during an extended time of use, and not a vehicle malfunction.

Countermeasures:

Temporarily avoid driving the vehicle and increase time not in use to eliminate the problem.

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