HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADB-227, P0ADC-226

DTC Code DTC Name
P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low
P0ADC-226 Hybrid Battery Positive Contactor Control Circuit High

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0ADB 227 Short to GND in the SMRB circuit

  • Wire harness or connector

  • HV battery junction block

  • Hybrid vehicle control ECU
P0ADC 226 Open or short to +B in the SMRB circuit

WIRING DIAGRAM

Refer to the wiring diagram for DTC 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 HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 1 BATTERY PACK WIRE CONNECTOR)


    1. Turn the power switch off.

    2. A01H1YGE02

      Disconnect the No. 1 battery pack wire connector.

    3. Disconnect connector E58 from the hybrid vehicle control ECU.

    4. Turn the power switch on (IG).

    5. A01GXNNE04

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      E58-5 (SMRB) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU and No. 1 battery pack wire connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    6. Turn the power switch off.

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

      Standard resistance (Check for open)
      Tester Connection Switch Condition Specified Condition
      E58-5 (SMRB) - zR3-5 (SMRB) Power switch off Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Switch Condition Specified Condition
      E58-5 (SMRB) or zR3-5 (SMRB) - Body ground and other terminals Power switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (NO. 1 BATTERY PACK WIRE CONNECTOR - HV BATTERY JUNCTION BLOCK)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Turn the power switch off.

    2. Remove the service plug grip. Click here

      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.

    3. A01GYR7E02

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      zR3-5 (SMRB) - zR3-1 (IG0) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-2 (SI0) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-3 (IGCT) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-4 (SMRG) Power switch off 37.6 to 64.2 Ω
      zR3-5 (SMRB) - zR3-6 (GND) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-7 (ILK) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-8 (GND) Power switch off 18.8 to 32.1 Ω
      zR3-5 (SMRB) - zR3-9 (IG1) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-10 (GND0) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-11 (SHLD) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-12 (BTH-) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-13 (BTH+) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-15 (IDH) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-16 (GND) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-17 (SI1) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - zR3-18 (GND1) Power switch off 10 kΩ or higher
      zR3-5 (SMRB) - Body ground Power switch off 10 kΩ or higher

    NG

    INSPECT HV BATTERY JUNCTION BLOCK (SMRB) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1 BATTERY PACK WIRE CONNECTOR - BODY GROUND)

    CAUTION:

    Be sure to wear insulated gloves.


    1. A01GY3VE04

      Turn the power switch off.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      zR3-8 (GND) - Body ground Power switch off Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

  4. INSPECT HV BATTERY JUNCTION BLOCK (SMRB)

    CAUTION:

    Be sure to wear insulated gloves.


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

    2. Disconnect the HV battery junction block connector.

    3. Remove the HV battery junction block from the vehicle. Click here

    4. A01GZI8E05

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

      Standard resistance
      Tester Connection Condition Specified Condition
      g2-1 - z30-1 Auxiliary battery voltage is not applied between terminals z38-3 (SMRB) and z38-2 (GND) 10 kΩ or higher
      g2-1 - z30-1 Auxiliary battery voltage is applied between terminals z38-3 (SMRB) and z38-2 (GND) Below 1 Ω

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

      Standard resistance
      Tester Connection Condition Specified Condition
      z38-3 (SMRB) - z38-2 (GND) -35 to 80°C (-31 to 176° F) 18.8 to 32.1 Ω

    NG

    REPLACE HV BATTERY JUNCTION BLOCK Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR