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Home >> Scion >> 2013 >> iQ EV >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes P0A90-509 - P3004-133) (Electric) >> Hybrid Control System >> DTC P0AFC-129: EV Battery Pack Sensor Module >> Procedure

DTC P0AFC-129: EV Battery Pack Sensor Module: Procedure

  1. CHECK DTC OUTPUT (EV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV / Trouble Codes.
    4. Check if DTCs related to the EV control system are output.

      Result

      Result Proceed to
      Only P0AFC-129 is output or P0AFC-129 and DTCs other than the ones in the table below are also output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0A1A-151, 155, 156, 658, 659 Generator Control Module
      P0A1B-164, 193, 512, 661, 786 Drive Motor "A" Control Module
      P0A1D-148 EV Control Module
      P0A1F-832, 833 Battery Energy Control Module
      P0A78-266, 267 Drive Motor "A" Inverter Performance
      P0A94-589, 590 Inverter Performance
      P0ADF-229 EV Battery Negative Contactor Control Circuit Low
      P0AE0-228 EV Battery Negative Contactor Control Circuit High
      P2511-149 ECM/PCM Power Relay Sense Circuit Intermittent
      P3004-132 High Voltage Power Resource
      P324E-788 MG-ECU Power Relay Intermittent Circuit
      U0110(all INF codes)*1 Lost Communication with Drive Motor Control Module "A"
      U0111-826 Lost Communication with Battery Energy Control Module "A"

      HINT: 

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
      • P0AFC-129 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.
    5. Turn the power switch off.

    B → See step   8 

    A: Go to next step 

  2. CHECK DTC OUTPUT (EV BATTERY) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV Battery / Trouble Codes.
    4. Check if DTCs related to the EV battery system are output.
      RESULT

      Result Proceed to
      DTCs related to EV Battery are not output, or DTCs other than the following are output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0AFC-123 EV Battery No. 1 Pack Sensor Module
      P0B3D-123 EV Battery No. 1 Voltage Sense "A" Circuit Low
      P0B42-123 EV Battery No. 1 Voltage Sense "B" Circuit Low
      P0B47-123 EV Battery No. 1 Voltage Sense "C" Circuit Low
      P0B4C-123 EV Battery No. 1 Voltage Sense "D" Circuit Low
      P0B51-123 EV Battery No. 1 Voltage Sense "E" Circuit Low
      P0B56-123 EV Battery No. 1 Voltage Sense "F" Circuit Low
      P0B5B-123 EV Battery No. 1 Voltage Sense "G" Circuit Low
      P0B60-123 EV Battery No. 1 Voltage Sense "H" Circuit Low
      P0B65-123 EV Battery No. 1 Voltage Sense "I" Circuit Low
      P0B6A-123 EV Battery No. 1 Voltage Sense "J" Circuit Low
      P0B6F-123 EV Battery No. 1 Voltage Sense "K" Circuit Low
      P0B74-123 EV Battery No. 1 Voltage Sense "L" Circuit Low
      P0B79-123 EV Battery No. 1 Voltage Sense "M" Circuit Low
      P300E-123 EV Battery No. 2 Pack Sensor Module
      P308A-123 EV Battery No. 1 Voltage Sensor All Circuits Low
      P32B2-123 EV Battery No. 2 Voltage Sensor "A" Circuit Low
      P32B7-123 EV Battery No. 2 Voltage Sensor "B" Circuit Low
      P32BC-123 EV Battery No. 2 Voltage Sensor "C" Circuit Low
      P32C2-123 EV Battery No. 2 Voltage Sensor "D" Circuit Low
      P32C7-123 EV Battery No. 2 Voltage Sensor "E" Circuit Low
      P32CC-123 EV Battery No. 2 Voltage Sensor "F" Circuit Low
      P32D2-123 EV Battery No. 2 Voltage Sensor "G" Circuit Low
      P32D7-123 EV Battery No. 2 Voltage Sensor "H" Circuit Low
      P32DC-123 EV Battery No. 2 Voltage Sensor "I" Circuit Low
      P32E2-123 EV Battery No. 2 Voltage Sensor "J" Circuit Low
      P32E7-123 EV Battery No. 2 Voltage Sensor "K" Circuit Low
      P32EC-123 EV Battery No. 2 Voltage Sensor "L" Circuit Low
      P32F2-123 EV Battery No. 2 Voltage Sensor "M" Circuit Low

      HINT: 

      P0AFC-129 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

    5. Turn the power switch off.

    B → See step   9 

    A: Go to next step 

  3. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV / Trouble Codes.
    4. Read and record the DTCs and freeze frame data.
    5. Clear the DTCs and freeze frame data.
    6. Turn the power switch off.

    NEXT: Go to next step 

  4. CHECK DTC OUTPUT (EV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV / Trouble Codes.
    4. Check if DTCs related to the EV control system are output.

      Result

      Result Proceed to
      P3004-131 is not output. A
      Power switch could not be turned on (READY) and DTC P3004-131 is output. B

      HINT: 

      Because P3004-131 uses 2-trip detection logic, the DTC detection conditions need to be met 2 times.

    5. Turn the power switch off.

    B → See step   10 

    A: Go to next step 

  5. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU). Refer to  PROCEDURE - Step 6 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ELECTRIC VEHICLE BATTERY ASSEMBLY) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the power management control ECU connector.
    3. Disconnect the electric vehicle battery assembly connector.
      Fig 1: Identifying Electric Vehicle Battery Assembly Connector
      GTY392787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.
      Fig 2: Measuring Resistance Of Power Management Control ECU - Electric Vehicle Battery Assembly Harness & Connector
      GTY385809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      C21-3 (SMRB) - Gi1-13 Power switch off Below 1 Ω
      C21-5 (SMRG) - Gi1-15 Power switch off Below 1 Ω
      C21-10 (SR2B) - Gi1-14 Power switch off Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Electric Vehicle Battery Assembly)
    5. Reconnect the electric vehicle battery assembly connector.
    6. Reconnect the power management control ECU connector.

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK → See step   7 

  7. REPLACE ELECTRIC VEHICLE BATTERY ASSEMBLY. Refer to  COMPONENTS 
  8. GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  9. GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  10. GO TO DTC CHART (P3004-131). Refer to  DTC P3004-131: High Voltage Power Resource  
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