Toyota Corolla (E120): On–vehicle inspection

1. Inspect pressure switch no.1.

  1. Magnetic clutch control: inspect pressure switch operation.
  1.  Set on the manifold gauge set.
  2.  Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (–) lead to terminal 1.
  3.  Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.

If operation is not as specified, replace the pressure switch.

  1. Cooling fan control: inspect pressure switch operation.
  1. Connect the positive (+) lead from the ohmmeter to terminal 2 and the negative (–) lead to terminal 3.
  2.  Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.

If operation is not as specified, replace the pressure switch.

2. Cooler compressor assy w/magnetic clutch

  1.  connect the positive (+) lead from the battery to terminal and the negative (–) lead to the body ground.
  2.  check that the magnetic clutch energized.

If operation is not as specified, replace the magnet clutch assy.

    Share this page:

    Other materials:

    Shift solenoid ”a” performance (shift solenoid valve s1)
    Dtc p0751 shift solenoid ”a” performance (shift solenoid valve s1) System description The ecm uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual gear position (1st, 2nd, 3rd or o/d gear). Then the ecm compares the actual gear with the shift sc ...

    Circuit description
    When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

    Cd sound skips
    Inspection procedure 1 Disc cleaning Disk cleaning ) if the disk gets dirty, clean the disk by wiping the surface from the center to outside in the radial directions with a soft cloth. Notice: do not use a conventional record cleaner or anti–static preservative. Standard: ...