DSC HU/Control Module REMOVAL/INSTALLATION: Notes

WARNING:

If the DSC HU/Control Module configuration is not completed, it could result in an unexpected accident due to the DSC being inoperative. If the DSC HU/Control Module is replaced, always use the automatic configuration function so that the DSC operation conditions are correct.
If the DSC related parts sensor initialization procedure is not completed, the DSC will not operate properly and it might cause an unexpected accident. Therefore, after replacing or removing the DSC HU/Control Module, make sure to perform the DSC related parts sensor initialization procedure to insure proper DSC operation.

CAUTION:

The internal parts of the DSC HU/Control Module could be damaged if dropped. Be careful not to drop the DSC HU/Control Module. Replace the DSC HU/Control Module if it is subjected to an impact.
Brake fluid will damage painted surfaces. Be careful not to spill any on painted surfaces. In addition, if there is any brake fluid on the wiring harness, the wire insulation may corrode causing a malfunction such as a short circuit. If brake fluid gets on a painted surface or wiring harness, wash and flush it off completely with water immediately.

NOTE:

When the ignition is switched ON or the engine is started after the DSC HU/Control Module have been replaced, the DSC Control Module reads data from the instrument cluster via CAN communication to perform automatic configuration.
The DSC HU/Control Module prior to replacement stores the vehicle specification information.
A new DSC HU/Control Module does not store any vehicle specification information.
Tighten the brake pipe flare nut using any commercially available flare nut wrench.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] .)
Remove the bolts.

Fig 1: PCM Wiring Harness Protector, Clips And Bolts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the clips from the brackets.
Detach the tabs of the PCM wiring harness protector and the bracket, and remove the bracket.

Courtesy of MAZDA MOTORS CORP.
Set the PCM wiring harness aside in the direction of the arrow shown in the figure.

Courtesy of MAZDA MOTORS CORP.
Remove in the order indicated in the table.
Install in the reverse order of removal.
After installation, add brake fluid, bleed the air, and inspect for fluid leakage. (See BRAKE FLUID AIR BLEEDING .)

If the DSC HU/Control Module is replaced, perform the auto configuration and the initialization of the sensors for DSC-related parts.

Switch the ignition ON (engine off or on) and wait for 10 s or more.
Switch the ignition off and wait for 3 s or more.
Switch the ignition ON (engine off or on) and wait for 3 s or more for the DSC HU/Control Module auto configuration to complete.
Clear the DTC. (See CLEARING DTC [DSC HU/Control Module] .)
Switch the ignition off and wait for 3 s or more.
Switch the ignition ON (engine off or on) and wait for 10 s or more.
Using the M-MDS, verify that DTCs U2300:54/U2300:55/U2300:56/U2300:64 are not displayed.
- If DTCs U2300:54/U2300:55/U2300:56/U2300:64 are displayed, go to the DTC troubleshooting procedure. (See DTC U2300:54/U2300:55/U2300:56/U2300:64 [DSC HU/Control Module] .)
Perform the sensor initialization for the DSC-related parts. (See DSC RELATED PARTS SENSOR INITIALIZATION PROCEDURE .)
Clear the DTC. (See CLEARING DTC [DSC HU/Control Module] .)
Switch the ignition off and wait for 3 s or more.
Switch the ignition ON (engine off or on) and wait for 10 s or more.
Using the M-MDS, verify that DTCs C0044:54/C0061:54/C0062:54/C0063:54 are not displayed.
- If DTCs C0044:54/C0061:54/C0062:54/C0063:54 are displayed, go to the DTC troubleshooting procedure. (See DTC C0044:01/C0044:28/C0044:49/C0044:54 [DSC HU/Control Module] .) (See DTC C0061:28/C0061:54/C0061:64 [DSC HU/Control Module] .) (See DTC C0062:28/C0062:54/C0062:64 [DSC HU/Control Module] .) (See DTC C0063:28/C0063:54/C0063:64 [DSC HU/Control Module] .)

Fig 2: DSC HU/Control Module Components With Torque Specification

Courtesy of MAZDA MOTORS CORP.

PART DESCRIPTION

1	DSC HU/Control Module connector (See DSC HU/Control Module Connector Removal Note .) (See DSC HU/Control Module Connector Installation Note .)
2	Brake pipe (See Brake Pipe Removal Note .) (See Brake Pipe Installation Note .)
3	Nut (See Bolt and Nuts Installation Note .)
4	Bolt (See Bolt and Nuts Installation Note .)
5	DSC HU/Control Module component
6	Nut
7	DSC HU/Control Module
8	Bracket
9	Mount rubber
10	Pipe holder