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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 B1600/P1260: Key ID Number Data Cannot Be Read >> 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 B1600/P1260 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY DTC USING WDS OR EQUIVALENT 
  • Is B1600/P1260 displayed?
 Yes Go to Step 3.
No Go to the next step.
2 VERIFY DTC USING WDS OR EQUIVALENT 
  • Is B2431/P1260 displayed?
 Yes SECURITY LIGHT: 13, WDS or equivalent: B2431/P1260.
(See SECURITY LIGHT: 13, DTC B2431/P1260 .)
No Go to the next step.
3 VERIFY WHETHER KEY IS VALID OR NOT 
  • Are there any keys with which the engine can be started, other than the key that is a cause of the displayed DTC?
 Yes Go to Step 5.
No Go to the next step.
4 VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL  Yes Replace the coil, then go to Step 6.
(See COIL REMOVAL/INSTALLATION .)
No
5 VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL 
  • Using another valid key, turn the ignition switch to the ON position.
  • Verify the DTC using the WDS or equivalent.
    • Is B1600/P1260 displayed again?
 Yes Replace the coil, then go to the next step.
(See COIL REMOVAL/INSTALLATION .)
No
6 INSPECT KEYLESS CONTROL MODULE 
  • Using the registered key, turn the ignition switch to the ON position.
    • Is B1600/P1260 displayed again?
 Yes 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 .)
No DTC troubleshooting completed.
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