Mazda 2 J64J Diagnostic Trouble Codes

ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS AND START SYSTEM]

DTC U0401:68 [ADVANCED KEYLESS AND START SYSTEM]..09-02A-34

• Detection Conditio..09-02A-34
• Possible Causes..09-02A-34
• Diagnostic Procedure..09-02A-34

DTC U201F:00 [ADVANCED KEYLESS AND START SYSTEM]...09-02A-34

• Detection Conditio...09-02A-34
• Possible Causes...09-02A-34
• System Wiring Diagra...09-02A-35
• Diagnostic Procedure...09-02A-35

FOREWORD [ADVANCED KEYLESS AND START SYSTEM]

• The OBD (on-board diagnostic) system has the following functions:
  • Malfunction detection function: Detects malfunctions in the advanced keyless and start system and outputs DTCs.
  • PID/data monitor function: Reads out specific input/output signals and the system status.
• Diagnostic DTCs can be read/cleared using the M-MDS.

DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM]

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.
   • When using the IDS (laptop PC)
     1. Select “Self Test”.
     2. Select “Modules”.
     3. Select “RKE”.
   • When using the PDS (Pocket PC)
     1. Select “Module Tests”.
     2. Select “RKE”.
     3. Select “Self Test”.
3. Verify the DTC according to the directions on the screen
   • If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.
4. After completion of repairs, clear all DTCs stored in the keyless control module. (See 09-02A-5 CLEARING DTC [ADVANCED KEYLESS AND START SYSTEM].)

DTC TABLE (ADVANCED KEYLESS AND START SYSTEM)

DTC M-MDS display	Detection condition	Reference
B1026:51	Steering lock unit not programmed	See 09-02A-9 DTC B1026:51
B1026:87	Communication error between keyless control module and steering lock unit	See 09-02A-9 DTC B1026:87
B1026:96	Steering lock unit status malfunction signal detected	See 09-02A-11 DTC B1026:96
B102B:51	No advanced key programming record (programming never performed in past)	See 09-02A-11 DTC B102B:51

Possible Causes

1. Steering lock unit connector or terminals malfunction
2. Keyless control module connector or terminals malfunction
3. Open or short circuit in wiring harness between steering lock unit and keyless control module
4. Steering lock unit malfunction
5. Keyless control module malfunction

INSPECT STEERING LOCK UNIT CONNECTOR

• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Disconnect the steering lock unit connector.
• Inspect the steering lock unit connector. (Corrosion, damage, and disconnected pins)
• Are the connector and terminals normal?

INSPECT KEYLESS CONTROL MODULE CONNECTOR

• Disconnect the keyless control module connector.
• Inspect the keyless control module connector. (Corrosion, damage, and disconnected pins)
• Are the connector and terminals normal?

INSPECT WIRING HARNESS BETWEEN STEERING LOCK UNIT AND KEYLESS CONTROL MODULE

• Inspect the wiring harness between keyless control module terminal 2L and steering lock unit terminal G for the following:
  • Short to ground
  • Short to power supply
  • Open circuit
• Is the wiring harness normal?

WINDSHIELD WASHER NOZZLE REMOVAL/INSTALLATION

1. Remove the windshield wiper arm. (See 09-19-7 WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION.)
2. Remove the cowl grille. (See 09-16-5 COWL GRILLE REMOVAL/INSTALLATION.)
3. Remove the windshield washer hose from the windshield washer nozzle.
4. Press the windshield washer nozzle tab in the direction of the arrow shown in the figure to detach it.
5. Pull out the windshield washer nozzle from the cowl grille and remove.
6. Install in the reverse order of removal.

WINDSHIELD WASHER NOZZLE ADJUSTMENT
Insert a tape-wrapped flathead screwdriver into the windshield washer nozzle and adjust the area washer fluid is sprayed as shown in the figure.

WINDSHIELD WASHER HOSE REMOVAL/INSTALLATION

1. Remove the mudguard on the left side. (See 09-16-8 MUDGUARD REMOVAL/INSTALLATION.)
2. Remove windshield washer hose No.1 from the washer tank.
3. Detach clip A. 
4. Remove windshield washer hose No.1 from clip B and joint pipe A in the direction of the arrow shown in the figure. 
5. Remove the windshield washer base No.1 from joint pipe A.
6. Remove windshield washer hose No.1 from joint pipe A.
7. Remove the cowl grille. (See 09-16-5 COWL GRILLE REMOVAL/INSTALLATION.)
8. Remove the windshield wiper arm. (See 09-19-7 WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION.)
9. Remove the windshield washer nozzle. (See 09-19-15 WINDSHIELD WASHER NOZZLE REMOVAL/INSTALLATION.)
10. Remove the windshield washer hose from the hook.
11. Remove windshield washer hoses No.2, No.3 and No.4 from joint pipes B and C. 
12. Install in the reverse order of removal.