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DTC INSPECTION [EVP CONTROL UNIT]

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2016 – MX-5 – Brakes

DTC INSPECTION [EVP CONTROL UNIT]

CMDTC self test

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.

a. Select “Self Test”.

b. Select “All CMDTCs”.

3. Verify the DTC according to the directions on the screen.

NOTE:

  • Snapshot data appears at the top of the help screen when the displayed DTC is selected.

  • Snapshot data stores the currently detected DTC data.

4. After completion of repairs, clear all DTCs stored in the module. (See CLEARING DTC [EVP CONTROL UNIT].)

ODDTC self test

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.

a. Select “Self Test”.

b. Select “Modules”.

c. Select “EVP”.

3. Verify the DTC according to the directions on the screen.

4. After completion of repairs, clear all DTCs stored in the module. (See CLEARING DTC [EVP CONTROL UNIT].)

Snapshot Data Table

NOTE:

  • Refer to PID monitor table for confirm the EVP system operation status while the EVP control unit does not store the DTC. (See PID/DATA MONITOR TABLE [EVP CONTROL UNIT].)

  • Snapshot data items are not displayed, according to detected DTC.

—: Not applicable

Snapshot data item

Unit

Definition

Data read/use method

Corresponding data monitor items

AAT

°C, °F

Ambient air temperature

—

—

APP_STATUS

Accelerator Pedal Off/

Under 20%/

Over 20%/

FAIL

Accelerator pedal position

—

—

BRK_SIG

Off/On

Brake pedal signal

—

BRK_SIG

CFG_STATUS

Config Complete/

Not Configured/

Config Error

Configuration status

—

—

ECT_STATUS

Under 0 degrees C/

0 – Under 80 degrees C/

Over 80 degrees C/

FAIL

Engine coolant temperature status

—

—

ECU_TEMP

°C, °F

ECU internal temperature

—

ECU_TEMP

IC_VPWR

V

Instrument cluster power supply

  • The EVP control unit constantly receives the power supply voltage value of the instrument cluster sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the power supply voltage of the instrument cluster when the DTC was detected, and it is displayed in the M-MDS.

—

IG-ON_TIMER

hh:mm:ss*1

Elapsed time since ignition was switched ON

NOTE:

  • The instrument cluster records the elapsed time since the ignition was switched ON.

  • The EVP control unit constantly receives the elapsed time since the ignition was switched ON sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the elapsed time since the ignition was switched ON when the DTC was detected, and it is displayed in the M-MDS.

—

PWR_MODE_KEY

Key Out/Key Recently Out/Key Approved (Position 0)/Post Accessory (Position 0)/Accessory (Position 1)/Post Ignition (Position 1)/Ignition On (Position 2)/Running (Position 2)/Running – Starting In Progress (Position 2)/Crank (Position 3)

  • Key Out: Ignition switched off

  • Key Recently Out (Position 0): Elapsed time within 3 s since ignition was switched off

  • Accessory (Position 1): Ignition is switched to ACC

  • Post Ignition (Position 2): Elapsed time within 3 s since ignition was switched ON

  • Ignition On (Position 2): Ignition switched ON (engine off)

  • Running (Position 2): Ignition switched ON (engine on)

  • Running – Starting: Cranking condition

  • The EVP control unit constantly receives the ignition switch status sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the ignition switch status when the DTC was detected, and it is displayed in the M-MDS.

—

RPM_STATUS

Engine Stop/

Under 1500 rpm/

Over 1500 rpm/

FAIL

Engine RPM status

  • The EVP control unit constantly receives the ignition switch status sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the ignition switch status when the DTC was detected, and it is displayed in the M-MDS.

—

SHIFT_STATUS

P/N

D/

R/

FAIL

Shift position status

  • The EVP control unit constantly receives the selector lever position sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the selector lever position when the DTC was detected, and it is displayed in the M-MDS.

—

TOTAL_DIST

km, ft, mi

Accumulated total traveled distance from completion of vehicle until EVP control unit detects DTC (Odometer value in instrument cluster)

The distance traveled when the EVP control unit detected a DTC can be calculated by performing the following procedure.

  1. Verify the odometer value in the instrument cluster.

  2. Verify the snap shot data item TOTAL_DIST.

  3. Subtract 2 from 1.

—

TOTAL_TIME

hh:mm:ss*1

Accumulated total elapsed time since vehicle completion until EVP control unit detects a DTC

NOTE:

  • When the ROOM fuse is removed, and the ignition is switched off, the time is not included in the elapsed time.

The elapsed time when the EVP control unit detected a DTC can be calculated by performing the following procedure.

  1. Verify the PID item TOTAL_TIME of the instrument cluster.

  2. Verify the snap shot data item TOTAL_TIME.

  3. Subtract 2 from 1.

—

VP_C

A

Electric vacuum pump operation current

—

VP_C

VP_MV

V

Electric vacuum pump terminal voltage (-)

—

VP_MV

VP_PV

V

Electric vacuum pump terminal voltage (+)

—

VP_PV

VPD_THR

kPa, mmHg, inHg

Electric vacuum pump deactivation threshold

  • If the power brake unit vacuum is larger than the value which is calculated by subtracting VPD_THR from barometric pressure, the electric vacuum pump is deactivated

—

VPD_THR

VPR1_V

Off/On

Electric vacuum pump relay 1 status

—

VPR1_V

VPR2_V

Off/On

Electric vacuum pump relay 2 status

—

VPR2_V

VPWR

V

Power supply

—

VPWR

VS1

kPa, mmHg, inHg

Power brake unit vacuum (absolute pressure) detected by vacuum sensor 1

—

VS1

VS1_V

V

Vacuum sensor 1 power supply

—

VS1_V

VS2

kPa, mmHg, inHg

Power brake unit vacuum (absolute pressure) detected by vacuum sensor 2

—

VS2

VSPD_STATUS

Stop/

0 – 10 km/h/

Over 10 km/h/

FAIL

Vehicle speed status

  • The EVP control unit constantly receives the vehicle speed sent via CAN signal from the instrument cluster.

  • If a DTC is detected, the EVP control unit records the vehicle speed when the DTC was detected, and it is displayed in the M-MDS.

—

*1
Fractions of seconds may be indicated after the decimal point

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