2005 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

Diagnostic procedure

TRANSMITTER ID CODE CANNOT BE REPROGRAMMED - DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT TRANSMITTER BATTERY INSTALLATION AND TYPE 
  • Visually inspect transmitter battery.
  • Are following items okay?
    • Transmitter battery installation (correct polarity)
    • Battery type (CR1620)
 Yes Go to next step.
No Set transmitter battery properly or replace with specified transmitter battery (CR1620), then go to Step 7.
2 INSPECT TRANSMITTER BATTERY TERMINALS FOR RUST AND POOR CONNECTION 
  • Visually inspect transmitter.
    • Is there rust on transmitter battery terminals (positive or negative pole)?
    • Is there poor connection between terminals and battery?
 Yes Replace transmitter battery or repair transmitter battery terminal, then go to Step 7.
No Go to next step.
3 INSPECT TRANSMITTER BATTERY 
  • Inspect transmitter battery.
  • Is battery voltage normal?
 Yes Go to next step.
No Replace transmitter battery, then go to Step 7.
4 INSPECT KEYLESS CONTROL MODULE BRACKET INSTALLATION 
  • Is keyless control module bracket installed securely?
 Yes Go to next step.
No Install bracket securely, then go back to Step 7 of keyless entry system pre-inspection.
5 INSPECT GROUND SCREW INSTALLATION BETWEEN KEYLESS CONTROL MODULE AND KEYLESS CONTROL MODULE BRACKET 
  • Are keyless control module and keyless control module bracket connected securely to ground screw?
 Yes Go to next step.
No Install screw securely, then go back to Step 7 of keyless entry system pre-inspection.
6 VERIFY WHETHER MALFUNCTION IS IN TRANSMITTER OR KEYLESS CONTROL MODULE 
  • Reprogram transmitter ID codes using another known good transmitter.
  • Does keyless entry system operate okay?
 Yes Replace transmitter and reprogram transmitter ID code, then go to next step.
No Replace keyless control module and reprogram transmitter ID code, then go to next step.
7 RECHECK MALFUNCTION SYMPTOM AFTER REPAIR 
  • Does keyless entry system operate properly?
 Yes Troubleshooting completed. Explain repairs to customer.
No Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
Factory Service Tools

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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.