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 (transmission shift main switch) or shift lever, the power management 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 hybrid vehicle transaxle assembly.

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

A0040ENE01
DTC No. INF Code DTC Detection Condition Trouble Area
P085D 582 P position (PPOS) signal is logically inconsistent

  • Wire harness or connector

  • Transmission control ECU assembly

  • Power management control ECU
599 P position (PPOS) signal malfunction (output pulse is abnormal)
P0861 597 GND short in P position (PPOS) signal circuit
P0862 598 +B short in P position (PPOS) signal circuit

WIRING DIAGRAM

A0041JTE04

INSPECTION PROCEDURE

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: Chassis / 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 HV ECU

    5. Turn the power switch off.


    B

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

    A

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - TRANSMISSION CONTROL ECU ASSEMBLY)


    1. Disconnect the A21 power management control ECU connector.

    2. Disconnect the A23 transmission control ECU assembly connector.

    3. Turn the power switch on (IG).

    4. A004360E09
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management 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
      A23-22 (PCON) - Body ground Power switch on (IG) Below 1 V
      A23-23 (PPOS) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the power management control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    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 Condition Specified Condition
      A21-22 (PCON) - A23-22 (PCON) Power switch off Below 1 Ω
      A21-28 (PPOS) - A23-23 (PPOS) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A21-22 (PCON) or A23-22 (PCON) - Body ground and other terminals Power switch off 10 kΩ or higher
      A21-28 (PPOS) or A23-23 (PPOS) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Reconnect the A23 transmission control ECU assembly connector.

    8. Reconnect the A21 power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK POWER MANAGEMENT CONTROL ECU (PCON SIGNAL)


    1. Turn the power switch on (IG).

    2. A0041HCE09
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect an oscilloscope between the power management control ECU terminals specified in the table below, and measure the waveform.

      Item Content
      Terminal A21-22 (PCON) - L5-6 (E1)
      Equipment Setting 10 V/DIV., 10 ms/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

    3. Turn the power switch off.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    A

  4. CHECK POWER MANAGEMENT CONTROL ECU (PPOS SIGNAL)


    1. Turn the power switch on (IG).

    2. A0043KVE09
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect an oscilloscope between the power management control ECU terminals specified in the table below, and measure the waveform.

      Item Content
      Terminal A21-28 (PPOS) - L5-6 (E1)
      Equipment Setting 10 V/DIV., 10 ms/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

    3. Turn the power switch off.


    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    A

  5. REPLACE POWER MANAGEMENT CONTROL ECU

    Click here


    NEXT

  6. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

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

    5. Clear DTCs and freeze frame data.

    6. Turn the power switch off.


    NEXT

  7. CHECK DTC OUTPUT (HYBRID CONTROL)


    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 (transmission shift main switch) and leave the vehicle as it is for 10 seconds.

    5. Enter the following menus: Powertrain / Hybrid Control / 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.


    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    A

    COMPLETED