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DTC B1571 Reference Code Incompatibility

DTC DETECTING CONDITION: 

Reference code incompatibility between body integrated unit and ECM

CAUTION: When the body integrated unit is replaced, registration of the immobilizer system is required. For details, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
Step Check Yes No
1 CONFIRM NUMBER OF REGISTERED IMMOBILIZER KEY. 
Confirm the number of registered immobilizer key. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.		 Is the number of registration 0? Go to step 2  . Go to step 3  .
2 PERFORM IMMOBILIZER SYSTEM REGISTRATION. 
Register the immobilizer system. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.		 Is registration complete? Finish the diagnosis. Go to step 4  .
3 PERFORM ECM REGISTRATION. 
Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.		 Is registration complete? Finish the diagnosis. Go to step 4  .
4 CHECK FOR ANY OTHER DTC ON DISPLAY. 
  1. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY MODE .>
  2. Read the DTC of the ECM. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>
 Are DTCs other than DTC B1571 displayed? Perform the diagnosis for DTC other than DTC B1571. Go to step 5  .
5 PERFORM ECM REGISTRATION. 
  1. Replace the ECM. <Ref. to Engine Control Module (ECM) .> <Ref. to Engine Control Module (ECM) .>
  2. Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
 Is registration complete? Finish the diagnosis. Replace the body integrated unit. <Ref. to Body Integrated Unit .>
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