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Home >> Infiniti >> 2017 >> QX70 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 191 (Hybrid Battery System (Introduction And Diagnostic Trouble Codes (DTCS)) P0A09-P0C6E) (Hybrid)) >> Basic Inspection >> Module Charge Balance >> Work Procedure >> Single Module Replacement Procedure

Single Module Replacement Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Even when replacing only one module, voltage adjustment must be performed for all of the other 11 modules.

NOTE:

Voltage adjustment under low temperature conditions may require a long time. To prevent this from occurring, it is advisable to adjust voltage under room temperature conditions [20°C +- 10°C (68°F +- 18°F) ].

  1. CHECK ADJUSTMENT VOLTAGE VALUE

    1. Measure voltage of all modules (12), using a circuit tester.
    2. Use the minimum module voltage for the voltage adjustment value.
      CAUTION:
      • If the measured minimum module voltage is less than 28.0 V, use 28.0 V for the adjustment voltage.
      • Adjustment voltage must be in 100 mV. (Drop all digits less than 100.)

        Example: 28.825 V (MINIMUM MODULE VOLTAGE) = 28.800 V (Adjustment voltage value)

      Adjustment voltage value : MINIMUM MODULE VOLTAGE
      (If MINIMUM VOLTAGE VALUE is less than 28.0 V, use 28.0 V.)

    GO TO STEP 2  .

  2. CHECK MODULE VOLTAGE

    CAUTION:

    For details on the module charge balancer operation, refer to the adjuster operation information.

    1. Set the new module to the module charge balancer.
    2. Measure module voltage and compare it with "adjustment voltage value" confirmed in STEP 1.

    Module voltage is lower than adjustment voltage value 

    GO TO STEP 4  .

    Module voltage is higher than adjustment voltage value 

    GO TO STEP 3  .

  3. DISCHARGE OF MODULE VOLTAGE

    CAUTION:

    For details on the module charge balancer operation, refer to the adjuster operation information.

    Discharge the module to 26.0 V using module charge balancer.

    Discharge voltage : 26.0 V

    GO TO STEP 4  .

  4. MODULE VOLTAGE ADJUSTMENT

    CAUTION:

    For details on the module charge balancer operation, refer to the adjuster operation information.

    1. Enter the "adjustment voltage value" in the module charge balancer.
      Adjustment voltage value : MINIMUM MODULE VOLTAGE
      (If MINIMUM VOLTAGE VALUE is less than 28.0 V, use 28.0 V.)
    2. Start the voltage adjustment.

    After module voltage adjustment, GO TO STEP 5  .

  5. CHECK CELL VOLTAGE

    G-20 With CONSULT

    1. After adjusting the voltage, install the module to the vehicle.
    2. Select "DATA MONITOR" mode.
    3. Check the difference between "MAXIMUM CELL VOLTAGE" and "MINIMUM CELL VOLTAGE" to see that the difference is within the specified value.
      Standard : 100 mV or less
      CAUTION:

      If the difference between the maximum cell voltage and the minimum cell voltage is more than 100 mV, DTC is detected. Be sure to check that the difference is 100 mV or less.

    WORK END