HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADF-229

DTC Code DTC Name
P0ADF-229 Hybrid Battery Negative Contactor Control Circuit Low

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0ADF 229

Short to GND in the SMRG circuit

Primary circuit of SMR (-) is malfunctioning.

(2 trip detection logic)

  • Wire harness or connector

  • Hybrid battery junction block assembly

  • Hybrid vehicle control ECU
Related Data List
DTC No. Data List
P0ADF-229

  • VL-Voltage before Boosting

  • VH-Voltage after Boosting

  • Power Resource VB

  • SMRP Status

  • SMRB Status

  • SMRG Status

  • SMRP Control Status

  • SMRB Control Status

  • SMRG Control Status

  • Conv Shutdown

  • MG2 Inverter Shutdown

  • MG1 Inverter Shutdown

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225 Click here.

CAUTION / NOTICE / HINT

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 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.

Note

After turning the ignition 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


  • If DTC P0ADF-229 is stored, the ignition switch cannot be turned to ON (READY).

  • After the repair, clear the DTCs, perform the following procedure and check that the same DTC (including pending DTC) is not output.


    1. Turn the ignition switch off and wait for 30 seconds or more.

    2. Turn the ignition switch to ON (READY) and wait for 30 seconds or more.

    3. Turn the ignition switch off and wait for 60 seconds or more.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND)


    1. Disconnect the hybrid vehicle control ECU connector.

    2. A004G80E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F55-1 (SMRG) - Body ground Ignition switch off 25.0 to 59.0 Ω

    3. Connect the hybrid vehicle control ECU connector.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - 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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 1 hybrid vehicle battery cover panel LH Click here.

    3. Disconnect the hybrid battery junction block assembly connector.

    4. Disconnect the hybrid vehicle control ECU connector.

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

      A004F00E02
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F55-1 (SMRG) and K33-3 (SMRG) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

    6. Connect the hybrid vehicle control ECU connector.

    7. Connect the hybrid battery junction block assembly connector.

    8. Install the No. 1 hybrid vehicle battery cover panel LH.


    OK

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR