HYBRID CONTROL SYSTEM, Diagnostic DTC:P0851-775

DTC Code DTC Name
P0851-775 Park / Neutral Switch Input Circuit Low

DESCRIPTION

The park/neutral position switch can send 8 different switch signals to the hybrid vehicle control ECU. The hybrid vehicle control ECU uses the signals to detect the shift lever position (P, R, N, or D). The hybrid vehicle control ECU also uses this information to determine intended direction of travel (forward or reverse).

DTC No. INF Code DTC Detection Condition Trouble Area
P0851 775 N signal line malfunction

  • Wire harness or connector

  • Park/neutral position switch

  • Hybrid vehicle control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0705-757 Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      P0851-775 only is output. A
      P0705-757 is also output. B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK PARK/NEUTRAL POSITION SWITCH


    1. Turn the power switch off.

    2. Disconnect connector E58 from the hybrid vehicle control ECU.

    3. A000XUTE02
      *1 Rear view of wire harness connector: (to Hybrid Vehicle Control ECU)

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E58-1 (+BS) - E58-15 (N) N Position Below 1 Ω
      E58-1 (+BS) - E58-15 (N) Except N Position 4.2 to 5.2 kΩ

    NG

    INSPECT PARK/NEUTRAL POSITION SWITCH Click here

    OK

  3. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems Click here.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  4. INSPECT PARK/NEUTRAL POSITION SWITCH


    1. A000Z3CE02
      *1 Component without harness connected: (Park/Neutral Position Switch)

      Disconnect the park/neutral position switch connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E49-7 (+B) - E49-2 (N) N position Below 1 Ω
      E49-7 (+B) - E49-2 (N) Except N Position 4.2 to 5.2 kΩ

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH Click here