2021 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE

Shift-Lock Solenoid Inspection

NOTE:
  • The shift-lock solenoid is built into the selector lever component.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  2. Remove the following parts:
    1. Selector lever knob (See SELECTOR LEVER COMPONENT REMOVAL/INSTALLATION .)
    2. Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
    3. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)
    4. Cup holder (See CUP HOLDER REMOVAL/INSTALLATION .)
    5. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
    6. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION (US) .)
    7. Rear console bracket No. 1 (See REAR CONSOLE REMOVAL/INSTALLATION (US) .)
  3. Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  4. Verify that the voltages of each of the selector lever component terminals are as indicated in the table.
    G13176616Courtesy of MAZDA MOTORS CORP.
    G13177010Courtesy of MAZDA MOTORS CORP.

Standard 

Terminal Connected to Test condition Voltage (V)
A IG1 relay No. 2 Ignition switched ON (engine on) B+
Except above Below 1.0
E Shift panel indicator The following conditions are met (except emergency manual shift-lock release system is operated)
  • Selector lever is in P position
  • Ignition is switched to ON
  • Brake pedal is depressed (brake light switch is on)
 Below 1.0
Except above B+
  • If the voltage is not as indicated in the table, repair or replace the related wiring harness.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.