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2008 - MX-5 - Suspension

TIRE PRESSURE MONITORING SYSTEM (TPMS) ON-BOARD DIAGNOSIS

On-Board Diagnostic (OBD) Test Description

Read/clear diagnostic results
PID/Data monitor and record
Active command modes

Reading DTCs 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.
3. Verify the DTC according to the directions on the screen.
4. After completion of repairs, clear all DTCs stored in the TPMS. (See Clearing DTCs Procedure.)

Clearing DTCs Procedure

NOTE:

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.
3. Verify the DTC according to the directions on the screen.
4. Press the clear button on the DTC screen to clear the DTC.
5. Verify that no DTCs are displayed.

PID/Data Monitor and Record 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.
3. Select the applicable PID from the PID table.
4. Verify the PID data according to the directions on the screen.

NOTE:

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

Freeze Frame PID Data Access 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.

DTC Table



DTC

Description

Page

M-MDS

B1342

Instrument cluster internal malfunction

(See DTC B1342 [INSTRUMENT CLUSTER].)

B2143

ID registration failure

(See DTC B2143.)

B2477

Instrument cluster configuration not performed

(See DTC B2477 [INSTRUMENT CLUSTER].)

B2868

Wheel unit No.1 internal malfunction

(See DTC B2868, B2869, B2870, B2871.)

B2869

Wheel unit No.2 internal malfunction

(See DTC B2868, B2869, B2870, B2871.)

B2870

Wheel unit No.3 internal malfunction

(See DTC B2868, B2869, B2870, B2871.)

B2871

Wheel unit No.4 internal malfunction

(See DTC B2868, B2869, B2870, B2871.)

U0127

Communication failure between instrument cluster and keyless receiver

(See DTC U0127.)

U2616

Wheel unit No.1 (No response)

(See DTC U2616, U2617, U2618, U2619.)

U2617

Wheel unit No.2 (No response)

(See DTC U2616, U2617, U2618, U2619.)

U2618

Wheel unit No.3 (No response)

(See DTC U2616, U2617, U2618, U2619.)

U2619

Wheel unit No.4 (No response)

(See DTC U2616, U2617, U2618, U2619.)


PID/DATA Monitor Table



PID Name

(Definition)

Unit/

Condition

Condition/Specification

Action

AI_WU1_ID

AI_WU2_ID

AI_WU3_ID

AI_WU4_ID

(Wheel unit ID code (during ID registration))

Indicates the wheel unit ID code. (During wheel unit ID registration.)

  • Replace the wheel unit.

  • Perform the wheel unit ID registration.

AI_WU1_P

AI_WU2_P

AI_WU3_P

AI_WU4_P

(Tire pressure value (during ID registration))

Pa, psi

Indicates the tire pressure. (During ID registration.)

  • Adjust tire pressure.

  • Replace the wheel unit.

  • Perform the wheel unit ID registration.

FFD1_WU1_P

FFD1_WU2_P

FFD1_WU3_P

FFD1_WU4_P

(Tire pressure value (freeze frame PID data 1))

Pa, psi

Indicates the tire pressure. (Freeze frame PID data 1)

Adjust tire pressure.

FFD2_WU1_P

FFD2_WU2_P

FFD2_WU3_P

FFD2_WU4_P

(Tire pressure value (freeze frame PID data 2))

Pa, psi

Indicates the tire pressure. (Freeze frame PID data 2)

Adjust tire pressure.

FFD1_WU1_T

FFD1_WU2_T

FFD1_WU3_T

FFD1_WU4_T

(Internal tire air temperature value (freeze frame PID data 1))

°C, °F

Indicates the internal tire air temperature. (Freeze frame PID data 1)

Adjust tire pressure.

FFD2_WU1_T

FFD2_WU2_T

FFD2_WU3_T

FFD2_WU4_T

(Internal tire air temperature value (freeze frame PID data 2))

°C, °F

Indicates the internal tire air temperature. (Freeze frame PID data 2)

Adjust tire pressure.

FFD1_MLG

(Wheel unit mileage value (freeze frame PID data 1))

m, mi (ft)

Indicates the mileage. (Freeze frame PID data 1)

Adjust tire pressure.

FFD2_MLG

(Wheel unit mileage value (freeze frame PID data 2))

m, mi (ft)

Indicates the mileage. (Freeze frame PID data 2)

Adjust tire pressure.

FFD1_SPD

(Wheel unit speed value (freeze frame PID data 1))

KPH, MPH

Indicates the speed. (Freeze frame PID data 1)

Adjust tire pressure.

FFD2_SPD

(Wheel unit speed value (freeze frame PID data 2))

KPH, MPH

Indicates the speed. (Freeze frame PID data 2)

Adjust tire pressure.

IC_DTC_CNT

(Number of continuous DTCs)

  • DTCs detected: 1—255

  • No DTCs detected: 0

Perform the DTC inspection.

ID_LAST*

(Last received tire transmitter ID code value)

Indicates the last ID that is transmitted from the wheel unit.

  • Replace the wheel unit.

  • Perform the configuration.

ID_WU1*

ID_WU2*

ID_WU3*

ID_WU4*

(Registered wheel unit ID code)

Indicates the registered ID that is transmitted from the wheel unit.

  • Replace the wheel unit.

  • Perform the wheel unit ID registration.

WU1_P*

WU2_P*

WU3_P*

WU4_P*

(Tire pressure value)

Pa, psi

Indicates the tire pressure. (See SUSPENSION TECHNICAL DATA.)

  • Adjust tire pressure.

  • Replace the wheel unit.

WU1_T*

WU2_T*

WU3_T*

WU4_T*

(Internal tire air temperature value)

°C, °F

Indicates the internal tire air temperature.

Replace the wheel unit.


*
Data transmission from the wheel unit occurs when the vehicle speed is 25 km/h {15.5 mph} or more. Due to this, the current air pressure and temperature data can only be displayed after the vehicle is driven at 25 km/h {15.5 mph} or more. Also, the ID_LAST, and tire pressure and internal tire air temperature data are erased when the instrument cluster connector and the battery terminal are disconnected. If the instrument cluster is replaced or the battery terminals are disconnected, drive the vehicle at 25 km/h {15.5 mph} or more and display the tire pressure PID after the data transmission.

Active Command Modes Table



Command Name

Definition

Operation

Note

IDR_MODE

Wheel unit ID registration mode

ON/OFF

Ignition switch at ON




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