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NC MX-5 Miata Workshop Manual
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2008 - MX-5 - Transmission/Transaxle

PID/DATA MONITOR INSPECTION [SJ6A-EL]

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.

  • When using the IDS (laptop PC)

    1. Select “DataLogger”.

    2. Select “Modules”.

    3. Select “TCM”.

  • When using the PDS (Pocket PC)

    1. Select “Module Tests”.

    2. Select “TCM”.

    3. Select “DataLogger”.

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 parts is not within the specification, it is necessary to inspect the monitored value of input parts corresponding to the applicable output part control. In addition, because the system does not display an output part malfunction as an abnormality in the monitored value, it is necessary to inspect the output parts individually.

PID/DATA MONITOR AND RECORD function table

Monitor item (Definition)

Unit/Condition

Condition/Specification

Action

TCM terminal

BOO TCM

(Brake switch)

On/Off

  • Brake pedal depressed: On

  • Other: Off

Inspect the brake switch.

(See BRAKE SWITCH INSPECTION.)

N/A

DTCCNT

N/A

Indicates number of DTC

Check DTC.

(See DTC TABLE [SJ6A-EL].)

N/A

DWN SW

(Down switch)

On/Off

  • Down shift at M range: On

  • Other: Off

Inspect the selector lever component.

(See SELECTOR LEVER COMPONENT INSPECTION.)

2F

ECT TCM

(ECT)

°C

Indicates ECT

N/A

FDPDTC

(FREEZE FRAME DATA)

N/A

Indicates code of FREEZE FRAME DATA

N/A

N/A

GEAR_RA

(Gear ratio)

N/A

  • 1GR: 3.538

  • 2GR: 2.060

  • 3GR: 1.404

  • 4GR: 1.000

  • 5GR: 0.713

  • 6GR: 0.582

  • R position: 3.168

Inspect following PIDs: OSS, SSA, SSB, SSC, SSD, SSE SSF, SSG, THOP, TSS, VSS

N/A

GEAR_SEL

(Calculated gear range in TCM)

1/2/3/4/5/6

  • 1GR: 1

  • 2GR: 2

  • 3GR: 3

  • 4GR: 4

  • 5GR: 5

  • 6GR: 6

Inspect following PIDs: SSA, SSB, SSC, SSD, SSE, SSF, SSG, THOP, TSS, VSS

N/A

LPS

(Line pressure control solenoid)

A

  • D range, 1GR (idle): 996 mA

  • D range, 3GR: 656 mA

  • R position: 719 mA

Inspect the line pressure control solenoid.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1E, 1R

MNL SW

(M range switch)

On/Off

  • M range: On

  • Other: Off

Inspect the selector lever component.

(See SELECTOR LEVER COMPONENT INSPECTION.)

2G

OSS

(Output shaft speed)

RPM

  • Vehicle speed 40 km/h {25 mph}: 3,800 RPM

  • Indicates output shaft speed

Inspect the VSS.

(See VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL].)

2C, 2D

PNP_TCM

(Park/Neutral)

Drive/Neutral

  • P, N position: Neutral

  • D, M range or R position: Drive

Inspect the TR switch.

(See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL].)

2K, 2M, 2N, 2O

RPM TCM

(Engine speed)

RPM

  • Ignition switch ON: 0 rpm

  • Idle: 700—800 rpm

N/A

SS SW-

(Steering shift switch (down switch))

On/Off

M range

  • Steering shift down switch on: On

  • Other: Off

Inspect the steering shift switch.

(See STEERING SHIFT SWITCH INSPECTION.)

2AB, 2AF

SS SW+

(Steering shift switch (up switch))

On/Off

M range

  • Steering shift up switch on: On

  • Other: Off

Inspect the steering shift switch.

(See STEERING SHIFT SWITCH INSPECTION.)

2AB, 2AF

SSA

(Shift solenoid A)

On/Off

  • 2GR, 3GR, 4GR, 5GR, 6GR: On

  • 1GR: Off

Inspect the shift solenoid A.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1AF

SSB

(Shift solenoid B)

On/Off

  • 1GR, 2GR, 6GR: On

  • 3GR, 4GR, 5GR: Off

Inspect the shift solenoid B.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1AB

SSC

(Shift solenoid C)

On/Off

  • 1GR, 2GR, 3GR: On

  • 4GR, 5GR, 6GR: Off

Inspect the shift solenoid C.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1AA

SSD

(Shift solenoid D)

On/Off

  • 5GR, 6GR: On

  • 1GR, 2GR, 3GR, 4GR: Off

Inspect the shift solenoid D.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1S

SSE

(Shift solenoid E)

On/Off

  • 1GR, 2GR, 3GR, 4GR: On

  • 5GR, 6GR: Off

Inspect the shift solenoid E.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1V

SSF

(Shift solenoid F)

A

  • 5GR, 6GR: 996 mA

  • 1GR, 2GR, 3GR, 4GR: 199 mA

Inspect the shift solenoid F.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1O, 1Z

SSG

(Shift solenoid G)

A

  • 1GR, 2GR, 3GR, 4GR: 996 mA

  • 5GR, 6GR: 199 mA

Inspect the shift solenoid G.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1L, 1Y

TCCC

(TCC solenoid valve)

A

  • TCC on: 996 mA

  • Other: 199 mA

Inspect the TCC control solenoid.

(See SOLENOID VALVE INSPECTION [SJ6A-EL].)

1D, 1Q

TFT

(ATF temperature)

°C

  • ATF temperature 20 °C {68 °F}: 20 °C

  • ATF temperature 40 °C {104 °F}: 40 °C

  • ATF temperature 60 °C {140 °F}: 60 °C

Inspect the TFT sensor.

(See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL].)

1J, 1M

TFTV

(ATF temperature signal voltage)

V

  • ATF temperature 20 °C {68 °F}: 3 V

  • ATF temperature 40 °C {104 °F}: 2.14 V

  • ATF temperature 60 °C {140 °F}: 1.38 V

Inspect the TFT sensor.

(See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL].)

1J, 1M

THOP

(Throttle position)

%

  • CTP: 20%

  • WOT: 89.8%

N/A

TR

(TR switch)

R/N/D/P

  • R position: R

  • N position: N

  • D range: D

  • P position: P

Inspect the TR switch.

(See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL].)

2K, 2M, 2N, 2O

TRD

(TR switch [D range])

On/Off

  • D range: On

  • Other ranges and all positions: Off

Inspect the TR switch.

(See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL].)

2K

TRR

(TR switch [R position])

On/Off

  • R position: On

  • Other positions and all ranges: Off

Inspect the TR switch.

(See TRANSMISSION RANGE (TR) SWITCH INSPECTION [SJ6A-EL].)

2M

TSS

(Turbine shaft speed)

RPM

  • Idle: 700—800 rpm

  • Vehicle speed 40 km/h {25 mph}: 3,800 RPM

Inspect the turbine sensor.

(See TURBINE SENSOR INSPECTION [SJ6A-EL].)

2A, 2B

UP SW

(Up switch)

On/Off

  • Up shift at M range: On

  • Other: Off

Inspect the selector lever component.

(See SELECTOR LEVER COMPONENT INSPECTION.)

2J

VPWR_TCM

(Battery voltage)

V

Ignition switch at ON position: B+

1AD

VSS

(Vehicle speed)

KPH

  • Vehicle speed 40 km/h {25 mph}: 40 KPH

  • Indicates vehicle speed

Inspect the VSS.

(See VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL].)

2C, 2D

Simulation Function Procedure

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.

  • When using the IDS (laptop PC)

    1. Select “DataLogger”.

    2. Select “Modules”.

    3. Select “TCM”.

  • When using the PDS (Pocket PC)

    1. Select “Module Tests”.

    2. Select “TCM”.

    3. Select “DataLogger”.

3. Select the active command modes from the PID table.
4. Perform the active command modes, inspect the operations for each parts.

  • If the operation of output parts cannot be verified after the active command mode inspection is performed, this could indicate the possibility of an open or short circuit, sticking, or operation malfunction in the output parts.

Simulation item tableX: Available

Simulation item

Applicable component

Unit/Condition

Operation

TCM terminal

IG ON

Idle

LPS

Pressure control solenoid control signal in TCM

A

N/A

X

1E, 1R

SSA

Shift solenoid A

On/Off

N/A

X

1AF

SSB

Shift solenoid B

On/Off

N/A

X

1AB

SSC

Shift solenoid C

On/Off

N/A

X

1AA

SSD

Shift solenoid D

On/Off

N/A

X

1S

SSE

Shift solenoid E

On/Off

N/A

X

1V

SSF

Shift solenoid F

A

N/A

X

1O, 1Z

SSG

Shift solenoid G

A

N/A

X

1L, 1Y

TCCC

TCC solenoid valve

A

N/A

X

1D, 1Q



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