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Home >> Mazda >> 2021 >> 6 Touring >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine (VIN M) >> Engine Control System Operation Inspection >> Purge Control System Inspection >> Related PIDs

Related PIDs

Item (definition) Unit/Condition Definition Condition/Specification (Reference)
APP1 % APP sensor No. 1
  • Accelerator pedal released: Approx. 15%
  • Accelerator pedal depressed: Approx. 90.58%
V
  • Accelerator pedal released: Approx. 0.75 V
  • Accelerator pedal depressed: Approx. 4.52 V
APP2 % APP sensor No. 2
  • Accelerator pedal released: Approx. 7.45%
  • Accelerator pedal depressed: Approx. 45.49%
V
  • Accelerator pedal released: Approx. 0.38 V
  • Accelerator pedal depressed: Approx. 2.26 V
EVAPCP % Purge solenoid valve duty value
  • Racing (Engine speed 2, 000 rpm): Approx. 4.7%
  • Racing (Engine speed 4, 000 rpm): Approx. 35.35%
MAF g/Sec Mass air flow
  • Displays MAF
V
  • Ignition switched ON (engine off) (MAF: 0.00 g/s {0 lb/min}): Approx. 1.69 V (ECT is 53 °C {127 °F})
  • Idle (after warm up) (MAF: 2.50 g/s {0.331 lb/min}): Approx. 1.89 V (ECT is 93 °C {199 °F})
  • Racing (engine speed is 2, 000 rpm) (MAF: 3.80 g/s {0.503 lb/min}): Approx. 2.02 V (ECT is 95 °C {203 °F})
LOAD % Engine load
  • Idle (after warm up): Approx. 16.07%
  • Racing (engine speed is 2, 000 rpm): Approx. 13.33%
  • Racing (engine speed is 4, 000 rpm): Approx. 15.29%
TP_REL % Throttle position signal (relative value)
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal depressed: Approx. 82%

If simulation function of M-MDS is not used: 

  1. Start the engine.
  2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  3. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
  4. Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold.
    • If there is a vacuum, inspect the following:
  5. Set the vehicle on a dynamometer or chassis roller.
    WARNING:
    • When the dynamometer or chassis roller is operating, there is a possibility that the operator may come into contact with or be caught up in the rotating parts, leading to serious injuries or death. When performing work while the dynamometer or chassis roller is operating, be careful not to contact or be caught up in any of the rotating parts.
  6. Drive the vehicle at an engine speed to approx. 2000 rpm for 30 s or more.
  7. Put a finger to the purge solenoid valve and verify that there is no vacuum applied during Step 2.
    • If there is no vacuum, inspect the following:
    • If there is vacuum, inspect the following:
      • Vacuum hose (Purge solenoid valve-Charcoal canister)


Item (definition) Unit/Condition Definition Condition/Specification (Reference)
APP1 % APP sensor No. 1
  • Accelerator pedal released: Approx. 15%
  • Accelerator pedal depressed: Approx. 90.58%
V
  • Accelerator pedal released: Approx. 0.75 V
  • Accelerator pedal depressed: Approx. 4.52 V
APP2 % APP sensor No. 2
  • Accelerator pedal released: Approx. 7.45%
  • Accelerator pedal depressed: Approx. 45.49%
V
  • Accelerator pedal released: Approx. 0.38 V
  • Accelerator pedal depressed: Approx. 2.26 V
ECT °C, °F Engine coolant temperature
  • Displays ECT
V
  • ECT is 20 °C {68 °F}: Approx. 3.10 V
  • ECT is 40 °C {104 °F}: Approx. 2.16 V
  • ECT is 60 °C {140 °F}: Approx. 1.40 V
  • ECT is 80 °C {176 °F}: Approx. 0.87 V
  • ECT is 100 °C {212 °F}: Approx. 0.54 V
MAF g/Sec Mass air flow
  • Displays MAF
V
  • Ignition switched ON (engine off) (MAF: 0.00 g/s {0 lb/min}): Approx. 1.69 V (ECT is 53 °C {127 °F})
  • Idle (after warm up) (MAF: 2.50 g/s {0.331 lb/min}): Approx. 1.89 V (ECT is 93 °C {199 °F})
  • Racing (engine speed is 2, 000 rpm) (MAF: 3.80 g/s {0.503 lb/min}): Approx. 2.02 V (ECT is 95 °C {203 °F})
LOAD % Engine load
  • Idle (after warm up): Approx. 16.07%
  • Racing (engine speed is 2, 000 rpm): Approx. 13.33%
  • Racing (engine speed is 4, 000 rpm): Approx. 15.29%
TP_REL % Throttle position signal (relative value)
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal depressed: Approx. 82%
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