HYBRID CONTROL SYSTEM, Diagnostic DTC:P085D-582, P085D-599, P0861-597, P0862-598

DTC Code DTC Name
P085D-582 Gear Shift Control Module "A" Performance
P085D-599 Gear Shift Control Module "A" Performance
P0861-597 Gear Shift Control Module "A" Communication Circuit Low
P0862-598 Gear Shift Control Module "A" Communication Circuit High

DESCRIPTION

When a signal is input from the P position switch (integration control and panel assembly) or shift lever (transmission instrument panel shift assembly), the EV control ECU transmits a P position control (PCON) signal to the transmission control ECU assembly. Based on this signal, the transmission control ECU assembly actuates the shift control actuator assembly in order to mechanically lock or unlock the counter drive gear in the FCV transaxle with motor assembly.

P position state (engaged or released) of the shift control actuator assembly is sent to the EV control ECU as a P position (PPOS) signal.

A01MGFNE02
DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P085D-582 Gear Shift Control Module "A" Performance P position (PPOS) signal is logically inconsistent

  • Wire harness or connector

  • Transmission control ECU assembly

  • EV control ECU

Master Warning Light:

Comes on
P085D-599 Gear Shift Control Module "A" Performance P position (PPOS) signal malfunction (output pulse is abnormal)

  • Wire harness or connector

  • Transmission control ECU assembly

  • EV control ECU

Master Warning Light:

Comes on
P0861-597 Gear Shift Control Module "A" Communication Circuit Low GND short in P position (PPOS) signal circuit

  • Wire harness or connector

  • Transmission control ECU assembly

  • EV control ECU

Master Warning Light:

Comes on
P0862-598 Gear Shift Control Module "A" Communication Circuit High +B short in P position (PPOS) signal circuit

  • Wire harness or connector

  • Transmission control ECU assembly

  • EV control ECU

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P085D-582

  • Shift Position Status (T/M Control)

  • P Request (T/M Control)

  • T/M ECU Pulse Consecutive Error

  • T/M ECU Pulse Single Error

  • T/M Control ECU State
P085D-599
P0861-597
P0862-598

WIRING DIAGRAM

A01MFNUE02
*1 Transmission Control ECU Assembly
*2 EV Control ECU
*3 Certification ECU (Smart Key ECU Assembly)

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 10 seconds or more.

  2. While depressing the brake pedal, move the shift lever to N and wait for 10 seconds or more.

  3. Push the P position switch (integration control and panel assembly) and wait for 10 seconds or more.

PROCEDURE


  1. CHECK DTC OUTPUT (TRANSMISSION CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Body Electrical / Transmission Control / Trouble Codes.


      Body Electrical > Transmission Control > Trouble Codes

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Electronic shift lever system DTCs are not output. A
      Any of the following DTCs are output. B
      DTC No. Relevant Diagnosis
      C2309 Open in B+ Circuit
      C2311 Communication Error from EV ECU

    5. Turn the power switch off.


    B

    GO TO DTC CHART (ELECTRONIC SHIFT LEVER SYSTEM) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (EV CONTROL ECU - TRANSMISSION CONTROL ECU)


    1. Disconnect the EV control ECU connector.

    2. Disconnect the transmission control ECU assembly connector.

    3. Disconnect the G41 certification ECU (smart key ECU assembly) connector.

    4. Turn the power switch on (IG).

    5. A01MJA6C02
      *a

      Rear view of wire harness connector

      (to EV Control ECU)
      *b

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G45-8 (PCON) - Body ground Power switch on (IG) Below 1 V
      G45-15 (PPOS) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the EV control ECU 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
      Tester Connection Condition Specified Condition
      A26-22 (PCON) - G45-8 (PCON) Power switch off Below 1 Ω
      A26-23 (PPOS) - G45-15 (PPOS) Power switch off Below 1 Ω
      A26-22 (PCON) or G45-8 (PCON) - Body ground and other terminals Power switch off 10 kΩ or higher
      A26-23 (PPOS) or G45-15 (PPOS) - Body ground and other terminals Power switch off 10 kΩ or higher

    8. Reconnect the certification ECU (smart key ECU assembly) connector.

    9. Reconnect the transmission control ECU assembly connector.

    10. Reconnect the EV control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK EV CONTROL ECU (PCON SIGNAL)


    1. Connect an oscilloscope between the EV control ECU terminals specified in the table below.

    2. Turn the power switch on (IG).

    3. A01MHPJC07
      *a

      Component with harness connected

      (EV Control ECU)

      Measure the waveform.

      Item Content
      Terminal G45-8 (PCON) - G45-6 (E1)
      Equipment Setting 10V/DIV., 10ms/DIV.
      Condition Power switch on (IG)
      Result
      Result Proceed to
      P position control (PCON) signal waveform appears A
      P position control (PCON) signal waveform does not appear B

    4. Turn the power switch off.


    B

    REPLACE EV CONTROL ECU Click here

    A

  4. CHECK EV CONTROL ECU (PPOS SIGNAL)


    1. Connect an oscilloscope between the EV control ECU terminals specified in the table below.

    2. Turn the power switch on (IG).

    3. A01MFTPC07
      *a

      Component with harness connected

      (EV Control ECU)

      Measure the waveform.

      Item Content
      Terminal G45-15 (PPOS) - G45-6 (E1)
      Equipment Setting 10V/DIV., 10ms/DIV.
      Condition Power switch on (IG)
      Result
      Result Proceed to
      P position (PPOS) signal waveform appears A
      P position (PPOS) signal waveform does not appear B

    4. Turn the power switch off.


    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    A

  5. REPLACE EV CONTROL ECU

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  6. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / EV / Trouble Codes.


      Powertrain > EV > Trouble Codes

    4. Read and record the DTCs and freeze frame data.

    5. Clear DTCs and freeze frame data.


      Powertrain > EV > Clear DTCs

    6. Turn the power switch off and wait for 3 minutes or more.

      Result
      Proceed to
      NEXT

    NEXT

  7. CHECK DTC OUTPUT (EV)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG) and leave the vehicle as it is for 10 seconds.

    3. Depress the brake pedal, move the shift lever to N and leave the vehicle as it is for 10 seconds.

    4. Push the P position switch (integration control and panel assembly) and leave the vehicle as it is for 10 seconds.

    5. Enter the following menus: Powertrain / EV / Trouble Codes.


      Powertrain > EV > Trouble Codes

    6. Check if DTCs are output.

      Result
      Result Proceed to
      No DTCs are output. A
      P085D-582, P085D-599, P0861-597 or P0862-598 is output again. B

    7. Turn the power switch off.


    A

    COMPLETED

    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here