ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:P1C8F14, P1C9414, P1C9914

DTC Code DTC Name
P1C8F14 Park Pawl Motor Phase U Circuit Short to Ground or Open
P1C9414 Park Pawl Motor Phase V Circuit Short to Ground or Open
P1C9914 Park Pawl Motor Phase W Circuit Short to Ground or Open

DESCRIPTION

The shift control actuator assembly consists of a parking lock motor and rotation angle sensor. The hybrid vehicle control ECU receives a P position switch signal from the hybrid vehicle control ECU and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The hybrid vehicle control ECU stores these DTCs when it detects a malfunction in the parking lock motor system.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P1C8F14 Park Pawl Motor Phase U Circuit Short to Ground or Open

When the power switch is on (IG) and the auxiliary battery voltage is 10 V or more, even though the No. 1 integration relay (P-CON relay) operation permission signal is ON, the parking lock motor U phase terminal voltage (AD value recognized by the ECU) is less than 0.4 V for 1 second or more continuously.

(1 trip detection logic)

  • Auxiliary battery

  • Hybrid vehicle control ECU

  • Shift control actuator assembly

  • No. 1 integration relay (P-CON relay)

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Displayed

 DTC stored
P1C9414 Park Pawl Motor Phase V Circuit Short to Ground or Open

When the power switch is on (IG) and the auxiliary battery voltage is 10 V or more, even though the No. 1 integration relay (P-CON relay) operation permission signal is ON, the parking lock motor V phase terminal voltage (AD value recognized by the ECU) is less than 0.4 V for 1 second or more continuously.

(1 trip detection logic)

  • Auxiliary battery

  • Hybrid vehicle control ECU

  • Shift control actuator assembly

  • No. 1 integration relay (P-CON relay)

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Displayed

 DTC stored
P1C9914 Park Pawl Motor Phase W Circuit Short to Ground or Open

When the power switch is on (IG) and the auxiliary battery voltage is 10 V or more, even though the No. 1 integration relay (P-CON relay) operation permission signal is ON, the parking lock motor W phase terminal voltage (AD value recognized by the ECU) is less than 0.4 V for 1 second or more continuously.

(1 trip detection logic)

  • Auxiliary battery

  • Hybrid vehicle control ECU

  • Shift control actuator assembly

  • No. 1 integration relay (P-CON relay)

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Displayed

 DTC stored

CONFIRMATION DRIVING PATTERN

Tech Tips

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Turn the power switch on (IG).

  2. With the brake pedal depressed, select neutral (N).

  3. Push the P position switch (transmission shift main switch).

WIRING DIAGRAM

B006HAYE02

CAUTION / NOTICE / HINT

Note


  • Do not remove/install the auxiliary battery or disconnect the cable from the negative (-) auxiliary battery terminal before instructed.

  • Do not disconnect the connectors before instructed.

  • 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

  • If DTC P1C8F14, P1C9414 or P1C9914 is stored, the P-CON relay will be turned off as a fail-safe.

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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


      Powertrain > Hybrid Control > Trouble Codes

    4. Check if DTCs are output.

      Result
      Result Proceed to
      DTC P1C8F14, P1C9414 and P1C9914 are output simultaneously. A
      Only DTC P1C8F14, P1C9414 or P1C9914 is output. B

      Tech Tips


      • If DTCs P1C8F14, P1C9414 and P1C9914 are stored at the same time, there may be a malfunction in the parking lock motor (BMA signal) power source circuit.

      • If only DTC P1C8F14, P1C9414 or P1C9914 is stored, there may be a malfunction in the parking lock motor (MUA, MVA or MWA) circuit

    5. Turn the power switch off.


    B

    GO TO STEP 7 Click here

    A

  2. CHECK HARNESS AND CONNECTOR (P-CON RELAY POWER SOURCE CIRCUIT)


    1. Disconnect the 1B No. 1 integration relay connector.

    2. B006J20C02
      *a

      Front view of wire harness connector

      (to No. 1 Integration Relay)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1B-9 - Body ground Always 9 to 14 V

    3. Reconnect the 1B No. 1 integration relay connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - P-CON RELAY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (P-CON RELAY - BODY GROUND)


    1. Disconnect the 1B No. 1 integration relay connector.

    2. B006J20C01
      *a

      Front view of wire harness connector

      (to No. 1 Integration Relay)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      1B-11 - Body ground Power switch off Below 1 Ω

    3. Reconnect the 1B No. 1 integration relay connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT NO. 1 INTEGRATION RELAY (P-CON RELAY)

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPLACE NO. 1 INTEGRATION RELAY (P-CON RELAY) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ACTUATOR ASSEMBLY - P-CON RELAY)


    1. Disconnect the C2 shift control actuator assembly connector.

    2. Disconnect the 1B No. 1 integration relay connector.

      Click here

    3. B006I19C01
      *a

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)
      *b

      Front view of wire harness connector

      (to No. 1 Integration Relay)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C2-2(BMA) - 1B-10 Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C2-2(BMA) or 1B-10 - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the 1B No. 1 integration relay connector.

    5. Reconnect the C2 shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - P-CON RELAY)


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the 1B No. 1 integration relay connector.

    3. B006HM4C06
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to No. 1 Integration Relay)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A41-15 (BMA) - 1B-12 Power switch off Below 1 Ω
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A41-15 (BMA) or 1B-12 - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the 1B No. 1 integration relay connector.

    5. Reconnect the A41 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - SHIFT CONTROL ACTUATOR ASSEMBLY)


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the C2 shift control actuator assembly connector.

    3. B006HB2C07
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)

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

      Standard Resistance (Check for Open)
      Tester Display Condition Specified Condition
      A41-1 (MUA) - C2-1 (MUA) Power switch off Below 1 Ω
      A41-2 (MVA) - C2-6 (MVA) Power switch off Below 1 Ω
      A41-3 (MWA) - C2-7 (MWA) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Display Condition Specified Condition
      A41-1 (MUA) or C2-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-2 (MVA) or C2-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-3 (MWA) or C2-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the C2 shift control actuator assembly connector.

    5. Reconnect the A41 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY (PARKING LOCK MOTOR)


    1. Disconnect the C2 shift control actuator assembly connector.

    2. B006JANC01
      *a

      Component without harness connected

      (Shift Control Actuator Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      1(MUA) - 2(BMA) Power switch off 0.5 to 2 Ω
      6(MVA) - 2(BMA) Power switch off 0.5 to 2 Ω
      7(MWA) - 2(BMA) Power switch off 0.5 to 2 Ω
      1(MUA) - 6(MVA) Power switch off 1 to 4 Ω
      6(MVA) - 7(MWA) Power switch off 1 to 4 Ω
      7(MWA) - 1(MUA) Power switch off 1 to 4 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      1 (MUA) - Body ground Power switch off 10 kΩ or higher
      6 (MVA) - Body ground Power switch off 10 kΩ or higher
      7 (MWA) - Body ground Power switch off 10 kΩ or higher

    3. Reconnect the C2 shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - P-CON RELAY)


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

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

    3. Disconnect the 1B No. 1 integration relay connector.

    4. B006J20C02
      *a

      Front view of wire harness connector

      (to No. 1 Integration Relay)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      Auxiliary battery positive (+) cable - 1B-9 Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      Auxiliary battery positive (+) cable or 1B-9 - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Reconnect the 1B No. 1 integration relay connector.

    6. Connect the cable to the positive (+) auxiliary battery terminal.

    7. Connect the cable to the negative (-) auxiliary battery terminal.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHARGE AUXILIARY BATTERY


    1. Charge the auxiliary battery.

      Result
      Proceed to
      NEXT

    NEXT

  11. CLEAR DTC

    Result
    Proceed to
    NEXT

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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


      Powertrain > Hybrid Control > Clear DTCs

    4. Clear the DTCs.

    5. Disconnect the GTS from the DLC3.

    6. Turn the power switch off.

    7. Leave the vehicle as is for 60 seconds or more.

      Note


      • Do not connect the GTS.

      • Do not depress brake pedal.

      • Do not open/close any of the doors.

      Result
      Proceed to
      NEXT

    NEXT

  12. CHECK DTC OUTPUT (SIMULATION TEST)


    1. Connect the GTS to the DLC3.

    2. With the brake pedal released, turn the power switch on (IG) and wait for 10 seconds or more.

      Tech Tips

      Do not turn the power switch on (READY).

    3. Depress the brake pedal and select neutral (N).

    4. Push the P position switch (transmission shift main switch).

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


      Powertrain > Hybrid Control > Trouble Codes

    6. Check if DTCs are output.

      Result
      Result Proceed to
      DTC P1C8F14, P1C9414 or P1C9914 is output. A
      DTCs P1C8F14, P1C9414 and P1C9914 are not output. B

    7. Turn the power switch off.


    A

    REPLACE AUXILIARY BATTERY Click here

    B

    END