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DTC    P0AE0-228    Hybrid Battery Negative Contactor Control Circuit High

for Preparation Click here


DESCRIPTION

Refer to the description for DTC P0AE6-225 .

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0AE0
228
Open or +B short in SMR3 (CON3) circuit
  1. Wire harness or connector
  2. Hybrid battery junction block assembly
  3. Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225 .

INSPECTION PROCEDURE

CAUTION:
  1. 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.
  2. 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).

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

NOTICE:
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).

1.READ VALUE USING INTELLIGENT TESTER (SMRG STATUS)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / Data List / SMRG Status.

  1. Read the Data List.

    OK:
    Tester Connection
    		Switch Condition
    		Specified Condition
    SMRG Status
    		Power switch on (IG)
    		OFF

  1. Turn the power switch off.



NG
Go to step 4
OK


2.CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


  1. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors.


    A237663E01


    Text in Illustration 
    *A
    		for LHD
    		*B
    		for RHD

    OK:
    The connectors are connected securely and there are no contact pressure problems.



NG
CONNECT SECURELY
OK


3.CHECK CONNECTOR CONNECTION CONDITION (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY CONNECTOR)


    A240953

  1. Check the condition of the hybrid battery junction block assembly connector.

    OK:
    The connector are connected securely and there are no contact problems.



NG
CONNECT SECURELY
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)  

4.CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE)

  1. Turn the power switch on (IG).



    A249277E15

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H3-2 (SMRG) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *a
    		Component with harness connected
    (Power Management Control ECU)

  1. Turn the power switch off.



NG
Go to step 6
OK


5.CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


  1. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors.


    A237663E01


    Text in Illustration 
    *A
    		for LHD
    		*B
    		for RHD

    OK:
    The connectors are connected securely and there are no contact pressure problems.



NG
CONNECT SECURELY
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)  

6.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

  1. Disconnect connector H3 from the power management control ECU.



    A204445E33

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H3-2 (SMRG) - Body ground
    		Power switch off
    		19.0 to 35.5 Ω

    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Power Management Control ECU)

  1. Connect the power management control ECU connector.



NG
Go to step 8
OK


7.CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

CAUTION:
Be sure to wear insulated gloves.

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

    NOTICE:
    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.



    A248780E01

  1. Remove the IGCT NO. 2 and AM2 fuses from the engine room junction block assembly.
    Text in Illustration 
    *1
    		Engine Room Junction Block Assembly
    *2
    		AM2 fuse
    *3
    		IGCT NO. 2 fuse

  1. Remove the upper hybrid battery cover sub-assembly.

  1. Disconnect connector i3 from the hybrid battery junction block assembly.

  1. Disconnect all the connectors from the power management control ECU.



    A238662E33

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H3-2 (SMRG) - A19-2 (+B2)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A20-5 (+B1)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - H3-1 (AM22)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - H4-7 (AM21)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A20-6 (MREL)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A20-1 (IG2)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - H4-1 (ACCD)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - H4-2 (IG1D)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A20-2 (IG2D)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - H3-14 (SPDI)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A19-16 (GI)
    		Power switch off
    		10 kΩ or higher
    H3-2 (SMRG) - A19-4 (FCTL)
    		Power switch off
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Power Management Control ECU)

  1. Connect the power management control ECU connectors.

  1. Connect the hybrid battery junction block assembly connector.

  1. Install the upper hybrid battery cover sub-assembly.

  1. Install the IGCT NO. 2 and AM2 fuses from the engine room junction block assembly.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)  

8.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - HYBRID BATTERY JUNCTION BLOCK)

CAUTION:
Be sure to wear insulated gloves.

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

    NOTICE:
    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.

  1. Remove the upper hybrid battery cover sub-assembly.

  1. Disconnect connector i3 from the hybrid battery junction block assembly.

  1. Disconnect connector H3 from the power management control ECU.



    A213116E38

  1. Measure the resistance according to the value(s) in the table below.
    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Power Management Control ECU)
    *b
    		Rear view of wire harness connector
    (to Hybrid Battery Junction Block Assembly)

    Standard Resistance (Check for Open):
    Tester Connection
    		Switch Condition
    		Specified Condition
    H3-2 (SMRG) - i3-1 (SMRG)
    		Power switch off
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Switch Condition
    		Specified Condition
    H3-2 (SMRG) and i3-1 (SMRG) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher

  1. Connect the power management control ECU connector.

  1. Connect the hybrid battery junction block assembly connector.

  1. Install the upper hybrid battery cover sub-assembly.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK HARNESS AND CONNECTOR (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY - BODY GROUND)

CAUTION:
Be sure to wear insulated gloves.

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

    NOTICE:
    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.

  1. Remove the upper hybrid battery cover sub-assembly.

  1. Disconnect connector i3 from the hybrid battery junction block assembly.



    A209512E14

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    i3-2 (GND) - Body ground
    		Power switch off
    		Below 1 Ω

    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Hybrid Battery Junction Block Assembly)

  1. Connect the hybrid battery junction block assembly connector.

  1. Install the upper hybrid battery cover sub-assembly.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


10.INSPECT HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

CAUTION:
Be sure to wear insulated gloves.

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

    NOTICE:
    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.

  1. Remove the hybrid battery junction block assembly.



    A215628E46

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    i3-1 (SMRG) - i3-2 (GND)
    -40 to 80°C (104 to 176°F)
    		-40 to 80°C (-40 to 176°F)
    		19.0 to 35.5 Ω

    Text in Illustration 
    *1
    		Hybrid Battery Junction Block Assembly

  1. Install the hybrid battery junction block assembly.



NG
REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (Click here)
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)