PLUG-IN CHARGE CONTROL SYSTEM, Diagnostic DTC:P316B-845

DTC Code DTC Name
P316B-845 On-Board Charger Unable to Stop

DESCRIPTION

Refer to the description for DTC P0D67-844 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P316B 845 The electric vehicle charger assembly is activated while the vehicle is being plug-in charged but the electric vehicle charger assembly is not requested to turn on.

  • Electric vehicle charger assembly

  • Plugin charge control ECU assembly

WIRING DIAGRAM

Refer to the wiring diagram for DTC P316C-846 Click here.

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly or electric vehicle charger assembly, turn the power switch off. Also, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly and electric vehicle charger assembly.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

Tech Tips

After the repair, plug-in charge the vehicle for at least 10 minutes with the remote climate control system off and check that the DTC is not output.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Only P316B-845 is output or P316B-845 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
      P0A1D-144, 148, 162, 721, 722, 723, 787, 818, 821, 823 Hybrid Powertrain Control Module
      P2511-149 HV CPU Power Relay Sense Circuit Intermittent No Continuity
      U019B-440 Lost Communication with Battery Charger Control Module

      Tech Tips

      P316B-845 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

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. CHECK DTC OUTPUT (PLUG-IN CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Plug-in Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Only P316B-845 is output or P316B-845 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
      P2511-441 Reset Detected
      P31FC-410 On-Board Charger Status Circuit
      U0293-439, 449 Lost Communication with Hybrid Powertrain Control Module

      Tech Tips

      P316B-845 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

    GO TO DTC CHART (PLUG-IN CHARGE CONTROL SYSTEM) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (CHRQ VOLTAGE)


    1. Turn the power switch on (IG).

    2. A004180E16
      Text in Illustration
      *a

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      z12-18 (CHRQ) - S21-14 (E1) Power switch on (IG) Below 1 V

    3. Turn the power switch off.


    NG

    CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CHRQ VOLTAGE) Click here

    OK

  4. CHECK PLUGIN CHARGE CONTROL ECU ASSEMBLY (CHECK WAVEFORM (CHST))

    Tech Tips

    The following procedure is used to check for a malfunction in an internal circuit of the plugin charge control ECU assembly.


    1. Connect the GTS to the DLC3.

    2. Connect an oscilloscope between the plugin charge control ECU assembly terminals specified in the table below.

    3. Turn the power switch on (IG).

    4. Enter the following menus: Powertrain / Plug-in Control / Data List

    5. Select "Charger State Pulse Duty Ratio" in the Data List.

      Tester Display Measurement Item/Range
      Charger State Pulse Duty Ratio

      Electric vehicle charger assembly charging status indicated by duty/

      Min.: 0.0 %, Max.: 100.0 %
    6. A0040G3E03
      Text in Illustration
      *a

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the waveform.

      Item Contents
      Tester Connection z12-29 (CHST) - S21-14 (E1)
      Equipment Setting 5 V/DIV., 50 ms/DIV.
      Condition Power switch on (IG)

      Tech Tips

      The waveform output from terminal CHST can be measured without connecting the electric vehicle charger cable assembly by turning the power switch on (IG).

    7. A00433HE01
      Text in Illustration
      *a Reference diagram for duty calculation

      Calculate duty (%) based on the CHST waveform.

      Tech Tips

      Calculate duty (%) using the following formula: Duty (%) = T1 / T2 x 100 (%)

    8. Compare the Data List item "Charger State Pulse Duty Ratio" with the duty (%) calculated based on CHST waveform.

      Result
      Result Proceed to
      The difference between "Charger State Pulse Duty Ratio" and the duty (%) calculated based on CHST waveform is less than 20 %. A
      The difference between "Charger State Pulse Duty Ratio" and the duty (%) calculated based on CHST waveform is 20 % or more. B

    9. Turn the power switch off.


    B

    REPLACE PLUGIN CHARGE CONTROL ECU ASSEMBLY Click here

    A

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY Click here

  5. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CHRQ VOLTAGE)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the z12 plugin charge control ECU assembly connector.

    3. Connect the cable to the negative (-) auxiliary battery terminal.

    4. Turn the power switch on (IG).

    5. Measure the voltage according to the value(s) in the table below.

      A0042OJE03
      Standard Voltage
      Tester Connection Condition Specified Condition
      z12-18 (CHRQ) - S20-5 (CHG) Power switch on (IG) Below 1 V
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Plugin Charge Control ECU Assembly)
      *b

      Component with harness connected

      (Electric Vehicle Charger Assembly)

      Tech Tips

      Turning the power switch on (IG) with the plugin charge control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    6. Turn the power switch off.

    7. Disconnect the cable from the negative (-) auxiliary battery terminal.

    8. Reconnect the z12 plugin charge control ECU assembly connector.


    NG

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY Click here

    OK

    REPLACE PLUGIN CHARGE CONTROL ECU ASSEMBLY Click here