LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2019 >> 3 Base, 4D Hatchback, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security And Locks >> LF Control Unit Inspection [(Us)] >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

LF Control Unit Inspection [(Us)]: Notes

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)] .)
  2. Remove the front side trim. (See LF CONTROL UNIT REMOVAL/INSTALLATION .)
  3. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)] .)
  4. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (See TERMINAL VOLTAGE TABLE (REFERENCE) .)
    • If the voltage is not as specified in the terminal voltage table (See TERMINAL VOLTAGE TABLE (REFERENCE) .), inspect the parts under Inspection item(s).
      • If the system does not work normally even though the inspection items are normal, replace the LF control unit.