HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AE2-773

DTC Code DTC Name
P0AE2-773 Hybrid Battery Precharge Contactor Circuit Stuck Closed

DESCRIPTION

Refer to the description for DTC P0AE6-225 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0AE2 773 SMRP on the HV battery positive side stuck closed

  • Hybrid battery junction block assembly

  • Inverter with converter assembly

WIRING DIAGRAM

See the wiring diagram of P0AE6-225 Click here.

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, 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 disconnecting 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.

Tech Tips

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

PROCEDURE


  1. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester 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
      P0E2-773 only is output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0A1A-151, 155, 156, 200, 658, 659, 791, 792, 793 Generator Control Module
      P0A1B-163, 164, 168, 193, 511, 661, 786, 794, 795, 796 Drive Motor "A" Control Module
      P0A1C-708, 709, 710, 715, 797, 798, 799 Drive Motor "B" Control Module
      P0A1D-148 Hybrid Powertrain Control Module
      P0A3F-243 Drive Motor "A" Position Sensor Circuit
      P0A40-500 Drive Motor "A" Position Sensor Circuit Range/Performance
      P0A41-245 Drive Motor "A" Position Sensor Circuit Low
      P0A45-669 Drive Motor "B" Position Sensor Circuit
      P0A46-671 Drive Motor "B" Position Sensor Circuit Range/Performance
      P0A47-670 Drive Motor "B" Position Sensor Circuit Low
      P0A4B-253 Generator Position Sensor Circuit
      P0A4C-513 Generator Position Sensor Circuit Range/Performance
      P0A4D-255 Generator Position Sensor Circuit Low
      P0A78-266, 267, 586 Drive Motor "A" Inverter Performance
      P0A91-702 Drive Motor "B" Performance
      P0A94-442 DC / DC Converter Performance
      P0AE0-228 Hybrid Battery Negative Contactor Control Circuit High
      P0AA4-232 Hybrid Battery Negative Contactor Circuit Stuck Closed
      P0AE7-224 Hybrid Battery Precharge Contactor Control Circuit High
      P0C76-523 Hybrid Battery System Discharge Time Too Long
      P2511-149 HV CPU Power Relay Sense Circuit Intermittent No Continuity
      P3004-132 Power Cable Malfunction
      P310A-711 Communication Error from RMG to Motor
      P310B-622 Communication Error from Motor to RMG
      P3233-750 Short to B+ in Blocking of HV Gate Connection
      P324E-788 MG-ECU Power Relay Intermittent Circuit
      U0110 (all INF codes)*1 Lost Communication with Drive Motor Control Module "A"

      Tech Tips


      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.

      • P0AE2-773 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 Click here

    A

  2. CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read the freeze frame data of DTC P0AE2-773.

      Result
      Result Proceed to
      Pre-boost voltage (VL) is less than 55 V. A
      Post-boost voltage (VL) is 55 V or more. B

    5. Turn the power switch off.


    A

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    B

  3. CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

    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. Remove the battery cover sub-assembly Click here.

    3. A01NG3BE02
      Text in Illustration
      *1 Hybrid Battery Junction Block Assembly

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      g3-1 - z22-1 Power switch off 10 kΩ or higher

      Tech Tips


      • If a system main relay is stuck closed, inspect the HV relay assembly without removing it from the vehicle, in order to keep the relay closed.

      • If the result of reading the freeze frame data is B, the HV battery junction block must be replaced. Measuring resistance can determine that this is either a present or past malfunction.

    4. Install the battery cover sub-assembly Click here.


    NG

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

    OK

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here