HYBRID CONTROL SYSTEM, Diagnostic DTC:P0560-117

DTC Code DTC Name
P0560-117 System Voltage

DESCRIPTION

Regular battery power is supplied to the BATT terminal of the EV control ECU in order to store DTCs and freeze frame data. Even if the power switch is turned off, back-up power is supplied.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P0560-117 System Voltage

Malfunction in the EV control ECU back-up power source circuit

(1 trip detection logic)

  • Wire harness or connector

  • EV control ECU

  • Fuse

Master Warning Light:

Comes on

WIRING DIAGRAM

A01MGE7E01
*a MAIN
*b Auxiliary Battery
*c EV Control ECU

CAUTION / NOTICE / HINT

Note

When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work (If the auxiliary battery voltage is needed to conduct inspection, warm up the FC system beforehand).

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (IG) and wait for 5 seconds or more.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (EV CONTROL ECU CONNECTOR)

    Result
    Proceed to
    OK
    NG

    1. A01MGTOC01
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the EV control ECU connectors.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  2. CHECK TERMINAL VOLTAGE (BATT)


    1. A01MG4FC89
      *a

      Component with harness connected

      (EV Control ECU)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G46-3 (BATT) - G45-6 (E1) Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE EV CONTROL ECU Click here

    NG

  3. CHECK FUSE (MPX-B)


    1. A01MJ4BC02
      *1 Motor Compartment Relay Block
      *2 MPX-B Fuse

      Remove the MPX-B fuse from the motor compartment relay block.

    2. Check if there is an open circuit in the MPX-B fuse in the motor compartment relay block.

      OK
      There is no open circuit in the MPX-B fuse.

    3. Install the MPX-B fuse.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FUSE (MPX-B)

    OK

  4. CHECK HARNESS AND CONNECTOR (MPX-B FUSE - BATTERY TERMINAL)


    1. A01MFWPC02
      *1 Motor Compartment Relay Block
      *2 MPX-B Fuse Holder

      Remove the MPX-B fuse from the motor compartment relay block.

    2. Disconnect the cable from the negative (-) auxiliary battery terminal.

    3. Disconnect the cable from the positive (+) auxiliary battery terminal.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (MPX-B fuse holder) - Auxiliary battery positive (+) cable Power switch off Below 1 Ω
      1 (MPX-B fuse holder) - Body ground Power switch off 10 kΩ or higher

    5. Reconnect the cable to the positive (+) auxiliary battery terminal.

    6. Reconnect the cable to the negative (-) auxiliary battery terminal.

    7. Install the MPX-B fuse.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (MPX-B FUSE - EV CONTROL ECU)


    1. Remove the MPX-B fuse from the motor compartment relay block.

    2. Disconnect the EV control ECU connector.

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

      A01MGNSC02
      *1 Motor Compartment Relay Block *2 MPX-B Fuse Holder
      *a

      Rear view of wire harness connector

      (to EV Control ECU)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (MPX-B fuse holder) - G46-3 (BATT) Power switch off Below 1 Ω

    4. Reconnect the EV control ECU connector.

    5. Install the MPX-B fuse.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE EV CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR