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 engine RPM data signal from the ECM 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 buzzer

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

WIRING DIAGRAM

B006XN9E02
*a Engine Oil Pressure Switch Assembly
*b Combination Meter Assembly
*c CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • 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.

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

    for 2GR-FKS: Click here

    for 2AR-FE: Click here

PROCEDURE


  1. INSPECT ENGINE OIL PRESSURE SWITCH ASSEMBLY


    1. Inspect the engine oil pressure switch assembly.

      for 2GR-FKS: Click here

      for 2AR-FE: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ENGINE OIL PRESSURE SWITCH ASSEMBLY for 2GR-FKS: Click here
    REPLACE ENGINE OIL PRESSURE SWITCH ASSEMBLY for 2AR-FE: Click here

    OK

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


    1. Disconnect the K21 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C87-1 - K21-9 (S) Always Below 1 Ω
      C87-1 or K21-9 (S) - 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