DTC P1571 Reference Code Incompatibility: DTC Detecting Condition

Reference code incompatibility between body integrated unit and ECM

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".	Is registration for all keys complete?	END.	Go to step 2.
2 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other immobilizer DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Execute the registration procedure next. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".	Replace the ECM. <Ref. to ENGINE CONTROL MODULE (ECM) (H4DOTC), or > <Ref. to ENGINE CONTROL MODULE (ECM) . > Replace the body integrated unit <Ref. to BODY INTEGRATED UNIT .> and replace all the ignition keys (including transponder). Execute the registration procedure next. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".