METER / GAUGE SYSTEM Engine Oil Pressure Switch Circuit

DESCRIPTION

The combination meter assembly and engine oil pressure switch assembly are connected via direct line. The combination meter assembly determines the engine oil pressure based on the engine oil pressure switch ON/OFF signal.

Tech Tips


  • The combination meter assembly receives various vehicle information signals from the hybrid vehicle control ECU via CAN communication in order to output warnings.

  • The combination meter assembly operates the following to output oil pressure warnings:


    1. Engine oil pressure warning light

    2. Engine oil pressure warning buzzer

    3. Engine oil pressure warning message on multi-information display

WIRING DIAGRAM

B000QHVE10
*a Hybrid Vehicle Control ECU Assembly
*b Engine Oil Pressure Switch Assembly
*c Combination Meter Assembly
*d CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • The following troubleshooting procedure is based on the assumption that the hybrid control system is normal. Confirm that the hybrid control system is not malfunctioning before performing the following procedure.

    Click here

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE


  1. INSPECT ENGINE OIL PRESSURE SWITCH ASSEMBLY


    1. Remove the engine oil pressure switch assembly.

      Click here

    2. Inspect the engine oil pressure switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ENGINE OIL PRESSURE SWITCH ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (ENGINE OIL PRESSURE SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the P25 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P25-9 (S) - G22-1 Always Below 1 Ω
      P25-9 (S) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR