TRACTION BATTERY CAPACITY AUTOMATIC MEASUREMENT



note
  • Do not disconnect the battery cable from the auxiliary battery (-) terminal.
  • To improve the measuring accuracy, working at more than 10° C of the outside temperature is recommended.
1.Perform the regular charging by connecting the regular charging cable.

2.Check that the charging lamp in the combination meter is lit and the battery is charging.

3.Check that the residual traction battery level indicator shows 1 segment or more. If the residual traction battery level indicator shows 0 segment, charge the traction battery until the battery level indicator shows 1 segment or more.


4.Connect the diagnosis connector to the M.U.T.-III.
5.Select the "BMU" from the System Select Screen of the M.U.T.-III.
6.Select the "Special Function" from the BMU Screen.
7.Select the "Traction Battery Capacity Automatic Measurement" from the Special Function Screen. When any malfunction has been found, perform troubleshooting.
8.Check that the "Execution status" displayed on the M.U.T.-III is "Executing". If "Not Completed" or "Not Executed" is displayed, check "Error state" , then restart from the step 1.
9.Recorded values for "Automatic Capacity Measurement Result History 1" and "Automatic Capacity Measurement ODO Value(Result History 1)" will be displayed on the M.U.T.-III.
note Recorded values are used in step 18.
10.Turn on the air conditioner under the following conditions.
<Air conditioner operating conditions>
  • Electric motor switch: LOCK
  • Air flow: largest
  • setting temperature: highest
  • A/C switch: ON
  • MAX switch: ON
note Capacity measurement time can be reduced if executed while the power window is fully open compared to the execution while the power window is fully closed.
11.Check that "Capacity Measurement Discharge Current" is "ON". If "NG/Not Executed" is displayed, restart from the step 10.
12.

Leave the vehicle until the charging lamp goes out.
note Check the charging status in the BMU service data "Item No.2: Charge state(Display)". When using the simplified chart of working time, you can calculate the period of time that the charging indicator spends to be turned off.
note Even if the M.U.T.-III is disconnected during this, the procedures cannot be affected.
13.Turn on the electric motor switch .
14.Select the "BMU" from the System Select Screen of the M.U.T.-III.
15.Select the "Special Function" from the BMU Screen.
16.Select the "Traction Battery Capacity Automatic Measurement" from the Special Function Screen. When any malfunction has been found, perform troubleshooting.
17.Check that the "Execution status" displayed on the M.U.T.-III is "Completed". If "Not Completed" or "Not Executed" is displayed, check "Error status" , then restart from the step 1.
18.Check that values for "Automatic Capacity Measurement Result History 1" and "Automatic Capacity Measurement ODO Value(History 1)" are updated. If not updated, restart from the step 1.
caution Do not operate the electric motor switch or disconnect the charging cable during procedure 1 to 12. If make a mistake during the work or stop the charging inadvertently before the battery is fully charged, restart from the beginning. Under low temperature condition, full charge may be judged and charging may be stopped before the full segment on the battery level indicator is shown.




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