PLUG-IN CHARGE CONTROL SYSTEM, Diagnostic DTC:P316C-846

DTC Code DTC Name
P316C-846 On-Board Charger Unable to Start

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P316C 846

The electric vehicle charger assembly is not activated while the vehicle is being plug-in charged and the electric vehicle charger assembly is requested to turn on. (The electric vehicle charger assembly cannot be activated.)

(1 trip detection logic)

  • Electric vehicle charger assembly

  • Plugin charge control ECU assembly

  • Power management control ECU

  • Wire harness or connector
Related Date List
DTC No. INF Code Data List
P316C 846

  • Charging Control Status

  • Charge Request to Charger

  • On-Board Charger Input Voltage

  • Charger Output Voltage

  • Voltage with Charge Cable Connected

  • Charge Cable Inserted

  • Charge Cable Engaged

WIRING DIAGRAM

A0041X1E01

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, check that the Data List item "State of Charge (All Bat)" is 70% or less, then plug-in charge the vehicle until it completes and check that DTCs are 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 P316C-846 is output or P316C-846 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
      P0ADC-226 Hybrid Battery Positive Contactor Control Circuit High
      P0AE0-228 Hybrid Battery Negative Contactor Control Circuit High
      P2511-149 HV CPU Power Relay Sense Circuit Intermittent No Continuity
      P3004-131, 803 Power Cable Malfunction
      U019B-440 Lost Communication with Battery Charger Control Module

      Tech Tips

      P316C-846 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 P316C-846 is output or P316C-846 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
      P0D20-422 Charger Relay Stuck Open
      P0D3E-234 On-Board Charger Input AC Voltage Sensor Range / Performance
      P0D3F-235 On-Board Charger Input AC Voltage Sensor Circuit Low
      P0D40-236 On-Board Charger Input AC Voltage Sensor Circuit High
      P2511-441 Reset Detected
      U0293-439, 449 Lost Communication with Hybrid Powertrain Control Module

      Tech Tips

      P316C-846 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 CHARGING

    Tech Tips


    • Check with the customer if the 220 to 240 V power used for plug-in charging was supplied by a power company.

    • If the electric vehicle charger cable assembly that was used to plug-in charge the vehicle is available, perform a reproduction test using it and a known good socket as follows. This allows the electric vehicle charger cable assembly to be determined as OK or NG when the vehicle is not malfunctioning.


    1. Plug-in charge the vehicle using a known good socket.


      1. Connect the Techstream to the DLC3.

      2. Turn the power switch on (IG).

      3. Clear DTC.

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

      5. Check that "State of Charge (All Bat)" shows 70% or less.

      6. Turn the power switch off.

      7. Connect the electric vehicle charger cable assembly and fully charge the vehicle. Check that plug-in charge control system DTCs are not output.

        Note

        Use the same 220 to 240 V power that the customer used to plug-in charge the vehicle when the DTC was stored, if possible.

        Result
        Result Proceed to
        DTCs are output or plug-in charge cannot be completed. A
        DTCs are not output and plug-in charge has been completed. B

        Tech Tips


        • This DTC is output if the vehicle cannot be plug-in charged because the AC input voltage rises or fluctuates, AC input voltage sine waveform fluctuates, or frequency is too high or too low.

        • As the voltage fluctuates quickly, it is difficult to check the plug-in charge status by checking the freeze frame data or Data list.


    B

    END (NO MALFUNCTION VEHICLE)

    A

  4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHRQ))


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

      A00420AE02
      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-18 (CHRQ) - S20-5 (CHG) Power switch off 4.2 kΩ or higher
      Text in Illustration
      *a

      Component with harness connected

      (Plugin Charge Control ECU Assembly)
      *b

      Component with harness connected

      (Electric Vehicle Charger Assembly)

    NG

    CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CHECK FOR SHORT (CHRQ)) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHEN))


    1. A0040VRE03
      Text in Illustration
      *a

      Component with harness connected

      (Electric Vehicle Charger Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S20-3 (CHEN) - S20-5 (CHG) Power switch off 3.8 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHEN)) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (CHPW FREQUENCY INSPECTION)


    1. Turn the power switch on (IG).

    2. A004180E17
      Text in Illustration
      *a

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the frequency according to the following table.

      Standard Frequency
      Tester Connection Condition Specified Condition
      z12-30 (CHPW) - S21-14 (E1) Power switch on (IG) 9 to 11 Hz

    3. Turn the power switch off.


    NG

    CHECK PLUGIN CHARGE CONTROL ECU ASSEMBLY (CHPW FREQUENCY INSPECTION) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (ILMT FREQUENCY INSPECTION)


    1. Turn the power switch on (IG).

    2. A004180E18
      Text in Illustration
      *a

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the frequency according to the following table.

      Standard Frequency
      Tester Connection Condition Specified Condition
      z12-22 (ILMT) - S21-14 (E1) Power switch on (IG) 9 to 11 Hz

    3. Turn the power switch off.


    NG

    CHECK PLUGIN CHARGE CONTROL ECU ASSEMBLY (ILMT FREQUENCY INSPECTION) Click here

    OK

  8. 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

  9. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CHECK FOR SHORT (CHRQ))

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

      A0042OJE04
      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-18 (CHRQ) - S20-5 (CHG) Power switch off 4.2 kΩ or higher
      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)

    4. 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

  10. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHEN))


    1. Disconnect the L6 power management control ECU connector.

    2. A0040VRE04
      Text in Illustration
      *a

      Component with harness connected

      (Electric Vehicle Charger Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S20-3 (CHEN) - S20-5 (CHG) Power switch off 4.0 kΩ or higher

    3. Reconnect the L6 power management control ECU connector.


    NG

    CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHEN)) Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  11. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT (CHEN))


    1. Disconnect the L6 power management control ECU connector.

    2. A0042T3E02

      Disconnect the S20 electric vehicle charger assembly connector.

    3. A0042YEE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Electric Vehicle Charger Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S20-3 (CHEN) - S20-5 (CHG) Power switch off 10 kΩ or higher

    4. Reconnect the S20 electric vehicle charger assembly connector.

    5. Reconnect the L6 power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY Click here

  12. CHECK PLUGIN CHARGE CONTROL ECU ASSEMBLY (CHPW FREQUENCY INSPECTION)

    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. A00436AE03
      Text in Illustration
      *a

      Component without harness connected

      (Plugin Charge Control ECU Assembly)
      *b

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the frequency according to the following table.

      Standard Frequency
      Tester Connection Condition Specified Condition
      z12-30 (CHPW) - S21-14 (E1) Power switch on (IG) 9 to 11 Hz

      Note

      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 PLUGIN CHARGE CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY Click here

  13. CHECK PLUGIN CHARGE CONTROL ECU ASSEMBLY (ILMT FREQUENCY INSPECTION)

    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. A00436AE04
      Text in Illustration
      *a

      Component without harness connected

      (Plugin Charge Control ECU Assembly)
      *b

      Component with harness connected

      (Plugin Charge Control ECU Assembly)

      Measure the frequency according to the following table.

      Standard Frequency
      Tester Connection Condition Specified Condition
      z12-22 (ILMT) - S21-14 (E1) Power switch on (IG) 9 to 11 Hz

      Note

      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 PLUGIN CHARGE CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY Click here