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Home >> Mazda >> 2012 >> CX-9 Touring, 3.7L Eng VIN A, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System MZI-3.7] >> Engine Control System Operation Inspection >> Drive-by-Wire Control System Inspection >> Throttle position (TP) sweep inspection

Throttle position (TP) sweep inspection

  1. Connect the M-MDS to the DLC-2.
  2. Turn the ignition switch to the ON position.
  3. Verify that none of the following DTC are displayed: (See ON-BOARD DIAGNOSTIC TEST article.)
    • P0122:00, P0123:00, P0222:00, P0223:00, P2101:00, P2107:00, P2112:00, P2122:00, P2123:00, P2127:00, P2128:00, P2135:00
      • If any one DTC is displayed, perform DTC inspection. (See DTC TABLE article.)
  4. Access TP1 TP2 PID. (See ON-BOARD DIAGNOSTIC TEST article.)
  5. Verify that the PID reading is within the CTP value. (See PCM INSPECTION article.)
    • If the PID reading is out of range, perform the following:
      • Remove the air duct from the throttle valve body.
      • Verify that the throttle valve opens when the accelerator pedal is depressed.
        • If the throttle valve opens, inspect the throttle position sensor and related wiring harness. (See THROTTLE POSITION (TP) SENSOR INSPECTION article.)
        • If the throttle valve does not open, inspect the throttle actuator control motor and related wiring harness.
  6. Gradually depress the throttle pedal and verify that the PID reading increases accordingly.
  7. Fully depress the throttle pedal and verify that the PID reading is within WOT value. (See PCM INSPECTION article.)
    • If the PID reading is out of range, perform the followings:
      • Remove the air duct from throttle valve body.
      • Verify that the throttle valve opens when throttle pedal is depressed.
        • If the throttle valve opens, inspect the throttle position sensor and related wiring harness. (See THROTTLE POSITION (TP) SENSOR INSPECTION article.)
        • If the throttle valve does not open, inspect the throttle actuator control motor and related wiring harness.