Steering Gear And Linkage Removal/Installation: Notes

WARNING:

• The temperature of the steering gear (EPS motor) is high just after turning the steering mechanism from lock to lock repeatedly, and it may cause severe burns. Before performing the work, verify that the steering gear has cooled down.

CAUTION:

• Performing the following procedures could cause an open circuit in the front ABS wheel-speed sensor wiring harness if it is pulled by mistake. Before servicing, disconnect the front ABS wheel-speed sensor and set it aside so that the wiring harness will not be pulled by mistake.
• If the steering wheel rotates after the steering shaft and the steering gear are disconnected, the internal parts of the clock spring could be damaged. Secure the steering wheel using tape or a cable to prevent the steering shaft from rotating after disconnecting the steering shaft.
• If the EPS CM is replaced with a new one, perform the configuration after replacing it.
• If configuration is not performed, the system does not operate normally.
• If the steering gear is dropped it could result in internal damage to the EPS CM, therefore be careful not to drop it. If the steering gear receives an impact, replace the EPS CM.

NOTE:

• The EPS CM prior to replacement stores the vehicle specification information.
• A new EPS CM does not store any vehicle specification information.
• When the ignition is switched ON (engine off or on) after the EPS CM is replaced, the EPS CM reads the vehicle specification information sent via CAN communication from the instrument cluster and stores it.

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
2. Remove the front under cover. (See FRONT UNDER COVER REMOVAL/INSTALLATION .)
3. Disconnect the intermediate shaft from the steering gear and linkage. (See INTERMEDIATE SHAFT REMOVAL/INSTALLATION .)
4. Remove the front ABS wheel-speed sensor from the wheel hub component.
   Fig 1: Front ABS Wheel-Speed Sensor, Wiring Harness, Front Upper Arm, Bracket And Bolts With Torque Specifications

   Courtesy of MAZDA MOTORS CORP.
5. Remove the front ABS wheel-speed sensor wiring harness from the bracket and front upper arm and set it aside so that it does not interfere with the servicing.
6. Detach the connectors shown in the figure.

   Courtesy of MAZDA MOTORS CORP.

7. Disconnect the tie-rod end from the steering knuckle. (See TIE-ROD END REPLACEMENT .)
8. Disconnect the lower radiator hose from the cooling fan component clip and hang it using a cable in a place where it does not interfere with the servicing.

   Courtesy of MAZDA MOTORS CORP.

9. Remove in the order indicated in the table.
10. Install in the reverse order of removal.
11. After installation, inspect the front wheel alignment. (See FRONT WHEEL ALIGNMENT .)
12. If the EPS CM is replaced, perform the following procedure.
    1. Perform the EPS CM configuration using the M-MDS.
       1. Connect the M-MDS to the DLC-2.
       2. Switch the ignition ON (engine off or on).
       3. Perform the following procedure using the M-MDS.
          CAUTION:

          • If the configuration fails, perform the configuration again.
          • Press [Start] for the vehicle identification.
          • Press the [Toolbox] tab.
          • Press the [Work Support] icon.
          • Press [Configuration].
          • Press [Run] for [Configuration].
          • Press [EPS].
       4. Perform the servicing following the instructions on the screen.
          CAUTION:

          • When performing the configuration, CAN communication is cut temporarily and communication error DTCs may be detected. After performing the configuration, perform the DTC inspection and clear DTCs if any are displayed.
       5. Perform the DTC inspection. (Refer to [DTC INSPECTION ] )
          • If a DTC is displayed, clear it. (Refer to [CLEARING DTC ] )
            • If the DTC is displayed again, repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
       6. If the configuration fails, perform the configuration procedure again.
    2. Using the M-MDS, verify that DTCs U2300:54/U2300:55/U2300:56 are not displayed.
       • If DTCs U2300:54/U2300:55/U2300:56 are displayed, go to the DTC troubleshooting procedure. (Refer to [DTC INSPECTION ] )

Fig 2: Steering Gear And Linkage Components Location With Torque Specifications

Courtesy of MAZDA MOTORS CORP.

COMPONENT OPERATIONS

Component no.	Refer to
1	Bolt (See BOLT INSTALLATION NOTE .)
2	Steering gear and linkage
3	Nut (See NUT INSTALLATION NOTE .)