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Home >> Toyota >> 2011 >> Camry Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 101 (Hybrid Vehicle Control System (P311) (Hybrid) (Diagnostic Codes (P0AA1-233 - U0424-537)) >> Hybrid Control System >> DTC P0ADB-227: Hybrid Battery Positive Contactor Control Circuit Low; DTC P0ADC-226: Hybrid Battery Positive Contactor Control Circuit High >> Procedure

DTC P0ADB-227: Hybrid Battery Positive Contactor Control Circuit Low; DTC P0ADC-226: Hybrid Battery Positive Contactor Control Circuit High: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR). Refer to  PROCEDURE - Step 3 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  2. CHECK CONNECTOR CONNECTION CONDITION (BATTERY PACK WIRE CONNECTOR). Refer to  PROCEDURE - Step 3 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY PACK WIRE CONNECTOR) 
    1. Turn the power switch off.
    2. Disconnect the A61 hybrid vehicle control ECU connector.
    3. Disconnect the On1 battery pack wire connector. Refer to REMOVAL .
      Fig 1: Identifying On1 Battery Pack Wire Connector Location
      GTY180714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the power switch on (IG).
    5. Measure the voltage according to the value(s) in the table below.
      Fig 2: Identifying Hybrid Vehicle Control ECU Connector Terminal Identification
      GTY167811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Tester Connection Specified Condition
      SMRB (A61-60) - Body ground Below 1 V
      NOTE:

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector 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 Specified Condition
      SMRB (A61-60) - CON2 (On1-3) Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      SMRB (A61-60) or CON2 (On1-3) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK CONNECTOR CONNECTION CONDITION (HV RELAY CONNECTOR) See step   6 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - HV RELAY ASSEMBLY) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Turn the power switch off and remove the service plug grip. Refer to PRECAUTION .
      NOTE:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the n3 HV relay assembly connector. Refer to REMOVAL .
      Fig 3: Identifying n3 HV Relay Assembly Connector Location
      GTY192883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.
      Fig 4: Identifying Battery Pack Wire And HV Relay Assembly Connector Terminal Identification
      GTY189071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Turning the power switch on (IG) with the battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      Standard voltage

      Tester Connection Specified Condition
      CON2 (On1-3) - Body ground Below 1 V
    5. Turn the power switch off.
    6. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Specified Condition
      CON2 (On1-3) - CON2 (n3-3) Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      CON2 (On1-3) or CON2 (n3-3) - Body ground 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR 
    WARNING:

    Be sure to wear insulated gloves.

    1. Connect the battery pack wire connector.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 5: Identifying Battery Pack Wire Connector Terminal Identification
      GTY167893Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      GND (n3-2) - Body ground Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. INSPECT HV RELAY ASSEMBLY (SMRB) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Check that the service plug grip is not installed.
    2. Remove the HV relay assembly from the vehicle. Refer to REMOVAL .
    3. Measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying s1 HV Relay Assembly Connector Terminal Identification
      GTY192900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      h4-1 - s1-1 Below 1 Ω
      (When battery voltage (12 V) applied to terminals n3-2 and n3-3)
      h4-1 - s1-1 10 kΩ or more
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Condition
      CON2 (n3-3) - GND (n3-2) 18.8 to 32.1 Ω at -35 to 80°C (-31 to 176°F)

    NG → See step   9 

    OK → See step   8 

  8. REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL 
  9. REPLACE HV RELAY ASSEMBLY. Refer to  REMOVAL 
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