ECD SYSTEM, Diagnostic DTC:P0562, P0563

DTC Code DTC Name
P0562 Battery Voltage Value Too Low
P0563 Battery Voltage Value Too High

DESCRIPTION

Battery voltage is applied to the BATT terminal regardless of the ignition switch operation. This voltage is used to diagnose the engine control system or to retain learning values or other data.

DTC No. DTC Detection Condition Trouble Area Possible to Detect
Ignition Switch Engine Run
P0562

The battery voltage remains less than 6.8 V for 2 sec. or more.

(3 trip detection logic)

  • Battery

  • Batt circuit

 ON -
P0563

The battery voltage exceeds 18 V for 2 sec. or more.

(3 trip detection logic)

  • Battery

  • Charging circuit

 ON -

FAIL-SAFE

DTC No. Fail-safe Operation Fail-safe Deactivation Condition
P0562 - -
P0563 - -

WIRING DIAGRAM

A0136NHE01

INSPECTION PROCEDURE

Tech Tips


  • When DTC P0562 or P0563 is detected, check the battery voltage by selecting the following menu items on the intelligent tester: Powertrain / Engine and ECT / Data List / Batt.

  • If the ECM is replaced, variant coding (variant coding indicates the presence of vehicle accessory items, A/C, etc.) should always be performed Click here.

  • Before removing the ECM and the peripheral parts, wait at least 3 minute after turning the ignition switch off (If the cooling fan is operating, remove the ECM and the peripheral parts after the fan stops.).

PROCEDURE


  1. CHECK DTC OUTPUT (P0562 OR P0563)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to the ON position and turn the intelligent tester on.

    3. Select the following menu items: Powertrain / Engine and ECT / DTC.

    4. Read the DTCs.

      Result
      Result Proceed To
      P0562 A
      P0563 B

    B

    CHECK BATTERY Click here

    A

  2. CHECK IF ENGINE STARTS

    Result
    Result Proceed To
    Engine does not start. A
    Engine starts. B

    B

    CHECK HARNESS AND CONNECTOR (BATTERY - ECM) Click here

    A

  3. CHECK BATTERY TERMINAL CABLE INSTALLATION


    1. Check the installation condition of the battery terminal cable.

      OK
      The terminal cable is installed correctly.

    NG

    REPAIR OR REPLACE BATTERY TERMINAL CABLE

    OK

  4. CHECK BATTERY VOLTAGE


    1. Check the battery voltage.

      Note

      Carry out this check with the engine stopped and the ignition switch off.

      Standard
      Result Proceed To
      11 V or more A
      Below 11 V B

    B

    CHARGE OR REPLACE BATTERY

    A

  5. CHECK HARNESS AND CONNECTOR (BATTERY - ECM)


    1. A013786E02

      Disconnect the battery negative terminal cable.

    2. Disconnect the battery positive terminal cable.

    3. Disconnect the B53 ECM connector.

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

      Standard resistance
      Check for open
      Tester Connection Specified Condition
      BATT (B53-28) - Battery positive terminal Below 1 Ω
      Check for short
      Tester Connection Specified Condition
      BATT (B53-28) - Battery positive terminal - Body ground 10 kΩ or higher

      Note

      After reconnection of the battery cable, the radio and clock should be adjusted as they were previously.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)


    1. A0137PTE01

      Disconnect the A35 (A36) ECM connector.

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

      Standard resistance (Check for open)
      LHD
      Tester Connection Specified Condition
      GND1 (A35-28) - Body ground Below 1 Ω
      GND2 (A35-32) - Body ground Below 1 Ω
      RHD
      Tester Connection Specified Condition
      GND1 (A36-28) - Body ground Below 1 Ω
      GND2 (A36-32) - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)


    1. A0137YQE01

      Disconnect the B53 and B54 ECM connectors.

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

      Standard resistance
      Check for open
      Tester Connection Specified Condition
      E1 (B53-38) - Body ground Below 1 Ω
      E2 (B54-12) - Body ground Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM

  8. CHECK BATTERY


    1. Check if the standard battery (12 V) is installed.

      OK
      The standard battery (12 V) is installed.

    NG

    REPLACE BATTERY

    OK

    CHECK AND REPAIR CHARGING CIRCUIT