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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On-Board Diagnostics - Automatic Transaxle >> On-Board Diagnostic System PID/Data Monitor Inspection

On-Board Diagnostic System PID/Data Monitor Inspection

  1. Connect the M-MDS to the DLC-2.
  2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
    1. Select "Data Logger".
    2. Select "Modules".
    3. Select "TCM".
  3. Select the applicable PID from the PID table.
  4. Verify the PID data according to the directions on the screen.
    NOTE:
    • The PID data screen function is used for monitoring the calculated value of input/output signals in the module. Therefore, if the monitored value of the output components is not within the specification, it is necessary to inspect the monitored value of input components corresponding to the applicable output component control. In addition, because the system does not display an output component malfunction as an abnormality in the monitored value, it is necessary to inspect the output components individually.
    • When detecting DTCs, PIDs related to a malfunctioning system may not display even if the module is normal. Therefore, if a PID is not displayed, it is necessary to verify the DTC, perform malfunction diagnosis of the DTC that was detected, and do repairs.

PID/DATA monitor item table (Reference)

-: Not applicable

Item Unit/Condition Test condition Specification (Reference) Output part name
APP % Ignition is switched ON (engine off) and accelerator pedal is not depressed Approx. 0 %
Ignition is switched ON (engine off) and accelerator pedal is fully pressed Approx. 100 %
BRAKE_SW Off/On Brake pedal is not depressed Off
Brake pedal is depressed On
ECT °C {°F} Displays engine coolant temperature
ENG_TQ - Displays engine torque
GEAR_SEL P/R/N/1/2/3/4/5/6 In P position P
  • Inspect the following monitor items:
    • OSS
    • SS_ON-OFF1
    • SS ON-OFF2
    • SS_ON-OFF3
    • SS ON-OFF4
    • SS_ON-OFF5
    • SSA_CC
    • SSB_CC
    • THOP
    • TR
    • TSS
      • VSS
In R position R
In N position N
In 1st gear 1
In 2nd gear 2
In 3rd gear 3
In 4th gear 4
In 5th gear 5
In 6th gear 6
LONGI_ACCEL - Vehicle is stopped or driving at constant speed Approx. 0
Accelerated Changes 0-positive
Deceleration Changes 0-negative
M_DOWN Off/On Selector lever is not in M (-) position Off
Selector lever is in M (-) position On
M_UP Off/On Selector lever is not in M (+) position Off
Selector lever is in M (+) position On
OSS RPM The following conditions are met
  • Engine is running
  • Vehicle is stopped
0 RPM
The following conditions are met
  • D position
  • Vehicle speed is 40 km/h {25 mph}
Approx. 1, 260 RPM
PADDLE_DOWN Off/On Down switch of steering shift switch is not operated Off
Down switch of steering shift switch is operated On
PADDLE_UP Off/On Up switch of steering shift switch is not operated Off
Up switch of steering shift switch is operated On
RPM RPM Displays engine speed
SLT A In R position Approx. 719 mA
In D position Approx. 996 mA
SS_ON-OFF1 Off/On In 1st gear Off
In 2nd gear On
In 3rd gear On
In 4th gear On
In 5th gear On
In 6th gear On
SS_ON-OFF2 Off/On In 1st gear On
In 2nd gear On
In 3rd gear Off
In 4th gear Off
In 5th gear Off
In 6th gear On
SS_ON-OFF3 Off/On In 1st gear On
In 2nd gear On
In 3rd gear On
In 4th gear Off
In 5th gear Off
In 6th gear Off
SS_ON-OFF4 Off/On In 1st gear Off
In 2nd gear Off
In 3rd gear Off
In 4th gear Off
In 5th gear On
In 6th gear On
SS_ON-OFF5 Off/On In 1st gear On
In 2nd gear On
In 3rd gear On
In 4th gear On
In 5th gear Off
In 6th gear Off
SSA_CC A In 1st gear Approx. 199 mA
In 2nd gear Approx. 199 mA
In 3rd gear Approx. 199 mA
In 4th gear Approx. 199 mA
In 5th gear Approx. 996 mA
In 6th gear Approx. 996 mA
SSB_CC A In 1st gear Approx. 996 mA
In 2nd gear Approx. 996 mA
In 3rd gear Approx. 996 mA
In 4th gear Approx. 996 mA
In 5th gear Approx. 199 mA
In 6th gear Approx. 199 mA
SSLU_C A Lock-up is not operating Approx. 199 mA
Lock-up is operating Approx. 996 mA
TFT °C {°F} Displays ATF temperature
TFTV V ATF temperature is 20°C {68°F} Approx. 3.0 V
ATF temperature is 40°C {104°F} Approx. 2.1 V
ATF temperature is 60°C {140°F} Approx. 1.4 V
THOP % Ignition is switched ON (engine off) and accelerator pedal is not depressed Approx. 21 %
Ignition is switched ON (engine off) and accelerator pedal is fully depressed Approx. 91 %
TR P/R/N/D/M In P position P
In R position R
In N position N
In D position D
In M position M
TSS RPM The following conditions are met
  • P position
  • Engine speed is 1, 000 RPM
Approx. 1, 000 RPM
The following conditions are met
  • Engine is running
  • D position
  • Vehicle is stopped
0 RPM
VPWR V Displays module supply voltage
VSS KPH {MPH} Displays vehicle speed