Mazda MX-5 Miata / Grand Touring. Manual - part 22

Fig. 8: Verifying Lock Lever Is Completely Pushed In 
Courtesy of MAZDA MOTORS CORP. 

ABS CONFIGURATION 

1. Connect the M-MDS or equivalent to the DLC-2. 

 

2008 Mazda MX-5 Miata Grand Touring 

2008 BRAKES Antilock Brake System - MX-5 Miata

  

Fig. 9: Locating DLC-2 Connector 
Courtesy of MAZDA MOTORS CORP. 

2. After the Vehicle is identified, select the following items from the initial screen of the M-MDS. 



When using the IDS (laptop PC) 

1. Select the "Module Programming".  



When using the PDS (Pocket PC) 

1. Select "Programming".  

2. Select "Module Programming".  

3. Then, select the "Programmable Module Installation" and "ABS" from the screen menu.  

4. Perform the configuration according to the directions on the screen.  

5. Retrieve DTCs using the M-MDS, then verify if DTCs are present. 



If a DTC is present, perform the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC 
(ABS) -- MX-5 MIATA )  

ABS HU/CM INSPECTION 

1. Disconnect the ABS HU/CM connector.  

2. Connect the negative battery cable.  

3. Attach the tester lead to the ABS HU/CM harness side connector, then inspect voltage, continuity or 

resistance according to the standard (reference value) on STANDARD (REFERENCE VALUE) 

 

2008 Mazda MX-5 Miata Grand Touring 

2008 BRAKES Antilock Brake System - MX-5 Miata

  

TABLE .  

STANDARD (REFERENCE VALUE) 

Fig. 10: Identifying ABS HU/CM Connector Terminals 
Courtesy of MAZDA MOTORS CORP. 

STANDARD (REFERENCE VALUE) TABLE 

Terminal

Signal name Connected to

Measured 

item

Measured 

terminal 

(measured 

condition)

Standard

Inspection Item

(s)

A

Ground (ABS 

motor)

Ground point

Continuity

A-ground point

Continuity 

detected



Wiring 

harness (A-

ground 

point)  

B

Power supply 

(ABS motor 

operation)

Battery

Voltage

Under any 

condition

B+



Wiring 

harness (B-

battery)  

C

Power supply 

(solenoid)

Battery

Voltage

Under any 

condition

B+



Wiring 

harness (C-

battery)  

D

Ground (ABS 

system)

Ground point

Continuity

D-ground point

Continuity 

detected



Wiring 

harness (D-

ground 

point)  

E

LF wheel-

speed sensor 

(ground)

LF ABS 

wheel-speed 

sensor

Continuity

E-LF ABS 

wheel-speed 

sensor 

connector 

terminal B

Continuity 

detected



Wiring 

harness (E-

LF ABS 

wheel-speed 

sensor 

connector 

 

2008 Mazda MX-5 Miata Grand Touring 

2008 BRAKES Antilock Brake System - MX-5 Miata

  

terminal B) 

F

LF wheel-

speed sensor 

(single)

LF ABS 

wheel-speed 

sensor

Continuity

F-LF ABS 

wheel-speed 

sensor 

connector 

terminal A

Continuity 

detected



Wiring 

harness (F-

LF ABS 

wheel-speed 

sensor 

connector 

terminal A) 

G

LR wheel-

speed sensor 

(signal)

LR ABS 

wheel-speed 

sensor

Continuity

G-LR ABS 

wheel-speed 

sensor 

connector 

terminal A

Continuity 

detected



Wiring 

harness (G-

LR ABS 

wheel-speed 

sensor 

connector 

terminal A) 

H

LR wheel-

speed sensor 

(ground)

LR ABS 

wheel-speed 

sensor

Continuity

H-LR ABS 

wheel-speed 

sensor 

connector 

terminal B

Continuity 

detected



Wiring 

harness (H-

LR ABS 

wheel-speed 

sensor 

connector 

terminal B) 

I

RR wheel-

speed sensor 

(signal)

RR ABS 

wheel-speed 

sensor

Continuity

I-RR ABS 

wheel-speed 

sensor 

connector 

terminal A

Continuity 

detected



Wiring 

harness (I-

RR ABS 

wheel-speed 

sensor 

connector 

terminal A) 

J

Power supply 

(system)

Ignition 

switch

Voltage

Ignition switch 

at ON

B+



Wiring 

harness (J-

ignition 

switch)  

Ignition switch 

is off.

1 V or less

-

K

-

-

-

-

-

-

L

RR wheel-

speed sensor 

(ground)

RR ABS 

wheel-speed 

sensor

Continuity

L-RR ABS 

wheel-speed 

sensor 

connector 

terminal B

Continuity 

detected



Wiring 

harness (L-

RR ABS 

wheel-speed 

sensor 

connector 

terminal B) 



Wiring 

 

2008 Mazda MX-5 Miata Grand Touring 

2008 BRAKES Antilock Brake System - MX-5 Miata