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PID/DATA MONITOR TABLE [EPS CONTROL MODULE]

—: Not applicable

Monitor item

Unit/Operation

Test condition

Specification (Reference)

Inspection item

ECU_IN_TMP

°C, °F

This PID indicates temperature of board in EPS control module.

ENG_RPM

RPM

This PID indicates engine speed.

MT_CURRENT

A

When not steered

Near 0 A

Steered left

Changes to 0 A—positive

Steered right

Changes to 0 A—negative

OH_CR_C

Yes/No

Overheat protection control (complete) is operating

Yes

—

Overheat protection control (complete) is not operating

No

OH_CR_M

Yes/No

Overheat protection control (middle) is operating

Yes

—

Overheat protection control (middle) is not operating

No

OH_HIST_C

Yes/No

Before overheat protection control (complete) has operated

Yes

—

Before overheat protection control (complete) has not operated

No

OH_HIST_M

Yes/No

Before overheat protection control (middle) has operated

Yes

—

Before overheat protection control (middle) has not operated

No

OH_IG_CNT_C

—

The number of times the ignition is switched ON during the period from when overheat protection control (complete) is finished to the time the next overheat protection control (complete) is started

  • Displays a maximum number of 255 times in which the ignition is switched ON until the first overheat protection control (complete) is started.

  • During overheat protection control (complete), the number of times the ignition is switched ON is not counted, and 0 is displayed.

—

OH_IG_CNT_M

—

The number of times the ignition is switched ON during the period from when overheat protection control (middle) is finished to the time the next overheat protection control (middle) is started

  • Displays a maximum number of 255 times in which the ignition is switched ON until the first overheat protection control (middle) is started.

  • During overheat protection control (middle), the number of times the ignition is switched ON is not counted, and 0 is displayed.

—

STR_AB_EST

°

Steering wheel position when vehicle wheels straight-ahead

0 °

  • Perform the DTC inspection for the PCM, DSC HU/CM, and EPS control module. If a DTC is displayed after performing the DTC inspection for the PCM, DSC HU/CM, and EPS control module, repair the malfunctioning part according to the applicable DTC troubleshooting.

    (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

    (See DTC INSPECTION [DSC HU/CM].)

    (See DTC INSPECTION [EPS CONTROL MODULE].)

  • After performing the DTC inspection, perform the following procedures:

    • Switch the ignition off and maintain condition for approx. 3 s.

    • Switch the ignition ON (engine off or on).

    • Set the vehicle wheels straight-ahead, then drive the vehicle straight at 20 km/h {12 mph} or more for 5 s or more.

    • Using the M-MDS, verify the STR_ANG_EST operation condition.

  • If an abnormal value is indicated after verifying the value of the STR_AB_EST ANG again, replace the EPS control module.

    (See ELECTRIC POWER STEERING (EPS) CONTROL MODULE REMOVAL/INSTALLATION.)

Steered left

Changes to 0 °—positive

Steered right

Changes to 0 °—negative

NOTE:

  • The monitor item STR_AB_EST indicates steering angle (estimated absolute angle).

STR_ANG

°

Steering wheel position when ignition is switched ON (engine off or on)

0 °

Steered left

Changes to 0 °—positive

Steered right

Changes to 0 °—negative

NOTE:

  • The monitor item STR_ANG indicates steering angle (relative angle).

  • The monitor item STR_ANG indicates the steering position when the ignition is switched ON as 0 °. Therefore, the steering position when the ignition is switched ON while the steering wheel is being operated is indicated as 0 °. In this case, 0 ° is not indicated even if the steering position is in the straight-ahead position.

  • To indicate monitor item STR_ANG as 0 ° when the steering position is in the straight-ahead position, perform the following procedure.

    1. Set the steering wheel in the straight-ahead position.

    2. Switch the ignition OFF (LOCK) and hold for approx. 2 min.

    3. Switch the ignition ON (engine off or on).

    • If monitor item STR_ANG is not indicated as 0 °, perform the following procedure.

      1. Set the steering wheel in the straight-ahead position.

      2. Switch the ignition OFF (LOCK) and hold for approx. 10—30 min.

      3. Switch the ignition ON (engine off or on).

STR_ROT_SPD

°/s

Not steered

Near 0 °/s

Steered

Changes according to steering speed

STR_TRQ_S_M

Nm

Not steered

Near 0 Nm

Steered left

Changes to 0 Nm—positive

Steered right

Changes to 0 Nm—negative

STR_TRQ_S_S

Nm

Not steered

Near 0 Nm

Steered left

Changes to 0 Nm—positive

Steered right

Changes to 0 Nm—negative

VPWR

V

This PID indicates power supply voltage for EPS control module.

VSPD

KPH, MPH

This PID indicates vehicle speed.
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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