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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".
DIAGNOSTIC PROCEDURE

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".		 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".		 Is registration complete? Finish the diagnosis. Go to step 4  .
3 PERFORM ECM REGISTRATION. 
Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".		 Is registration complete? Finish the diagnosis. Go to step 4  .
4 CHECK FOR ANY OTHER DTC ON DISPLAY.  Is any other DTC displayed? Perform the diagnosis according to DTC. Go to step 5  .
5 PERFORM ECM REGISTRATION. 
  1. Replace the ECM.
  2. Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".
 Is registration complete? Finish the diagnosis. Replace the body integrated unit. <Ref. to BODY INTEGRATED UNIT .>
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