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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On-Board Diagnostic - Automatic Transaxle (Mm8AX-EC) >> DTC P0753-00: On/Off Solenoid Valve No. 1: Circuit Malfunction

DTC P0753-00: On/Off Solenoid Valve No. 1: Circuit Malfunction

System malfunction location ON/OFF solenoid valve No. 1: Circuit malfunction
Detection condition
  • The TCM detects an ON/OFF solenoid valve No. 1 circuit malfunction.

    Precondition 

  • Battery voltage is the standard or more.
Fail-safe
  • Limits engine torque.
  • Inhibits learning control.
  • Inhibits manual mode.
  • Inhibits switching from engine-only driving to EV driving. (With Mazda M Hybrid boost)
  • Inhibits i-stop control. (Without Mazda M Hybrid boost)
  • If there is a short to power supply, inhibits driving (neutral).
  • Inhibits AAS.
  • Inhibits driving in the following gears.
    • 1st gear
    • 2nd gear
    • 3rd gear
    • 4th gear
    • 5th gear
    • Reverse
Possible cause
  1. Malfunction in the following control valve body component parts (Refer to [CONTROL VALVE BODY REMOVAL/INSTALLATION ] in service information).
    • ON/OFF solenoid valve No. 1 circuit (including connector/terminal) (open or short circuit)
    • ON/OFF solenoid valve No. 1
    • ON/OFF solenoid valve No. 3 circuit (including connector/terminal) (short to power supply)
    • Shift solenoid No. 1 circuit (including connector/terminal) (short to power supply)
    • Shift solenoid No. 2 circuit (including connector/terminal) (short to power supply)
    • Shift solenoid No. 3 circuit (including connector/terminal) (short to power supply)
    • Shift solenoid No. 4 circuit (including connector/terminal) (short to power supply)
    • Shift solenoid No. 5 circuit (including connector/terminal) (short to power supply)
    • TCM
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
  2. Perform the following procedure to ensure that the DTC has been resolved:
    • Drive the vehicle. (Use all gears from 1st to 8th gear and R position)
System wiring diagram
  • Not applicable