LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2005 >> MPV LX-SV >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Symptom Troubleshooting (Keyless Entry System) >> No.3 Transmitter Id Code Cannot Be Reprogrammed >> Diagnostic procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
scientia non olet · About LEMON Manuals