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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 476 (On-Board Diagnostic (Immobilizer System)) >> DTC U2510/P1260, U1147/P1260: Communication Error Between Keyless Control Module And PCM (No Response); Communication Error Between Keyless Control Module And PCM (Mismatched Conditions) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
DTC U2510/P1260 AND U1147/P1260 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY DTC USING WDS OR EQUIVALENT 
  • Are either U1900 or U0073, or both, displayed, by either the keyless control module or the PCM, or both?
 Yes Perform troubleshooting according to the corresponding DTC inspection.
(See DTC U0073, U1900, U2516 .)
No Replace the keyless control module and perform procedures for when replacing the keyless control module only.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION .)
(See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING .) Go to the next step.
2 VERIFY DTC 
  • Using the registered key, turn the ignition switch to the ON position.
  • Is the DTC displayed?
    • SECURITY LIGHT: 16
    • WDS or equivalent: U2510 or U1147/P1260
 Yes Replace the PCM and perform procedures for when replacing the PCM only.
(See PCM REMOVAL/INSTALLATION .)
(See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING .)
No DTC troubleshooting completed.
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