Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 562 (ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)])DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]M-MDS

2010 Mazda 5 Sport, 2.3 L, Standard

DTC Inspection [Immobilizer System (Keyless Entry System)]: M-MDS

2010 Mazda 5 Sport, 2.3 L, StandardSECTION M-MDS

WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.

Connect the M-MDS to the DLC-2.
After vehicle identification, the following can be selected from the M-MDS initialization screen.
- Using an IDS (laptop PC)
  1. "Self-test"
  2. "Module"
  3. "IC"
- Using a PDS (pocket PC):
  1. "Module test"
  2. "IC"
  3. "Self-test"
    
    Fig 1: Identifying DLC2 Connector Location
    Courtesy of MAZDA MOTORS CORP.
Verify the DTC according to the directions on the screen.
- If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection. When several DTCs are detected, repair the malfunctioning location based on the DTC displayed by the security light. (See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .)
NOTE:
- Because of the possibility that one malfunction cause could result in several DTCs being detected, erase the DTCs after the repair is completed, and then check for DTCs again.
After completion of repairs, clear all DTCs stored in the Instrument cluster. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .)

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.