Nissan Murano: Security Control System :: Basic Inspection / Additional Service When Replacing Control Unit. Ecm
Description
Performing the following procedure can automatically activate recommunication of ECM and BCM, but only when the ECM is replaced with a new one*.
*: New one means an ECM that has never been energized on-board.
(In this step, initialization procedure by CONSULT is not necessary)
CAUTION:
When replacing the ECM, a new ECM must be used. The functions controlled by the ECM do not operate properly if a ECM from another Nissan Murano vehicle is used.
NOTE:
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If multiple keys are attached to the key holder, separate them before beginning work.
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Distinguish keys with unregistered key IDs from those with registered IDs.
Work Procedure
PERFORM ECM RECOMMUNICATING FUNCTION
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Install ECM.
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Contact back side of registered Intelligent Key* to push-button ignition switch, then place ignition switch ON.
*: To perform this step, use the key that is used before performing ECM replacement.
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Maintain ignition switch in the ON position for at least 5 seconds.
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Ignition switch OFF.
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Check that the engine starts.
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GO TO 2.
PERFORM ADDITIONAL SERVICE WHEN REPLACING ECM
Perform Work Procedure.
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Work End.
Work Flow
OVERALL SEQUENCEDETAILED FLOWGET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurs)...
Other information:
System Description
SYSTEM DIAGRAMSIGNAL TRANSMISSION FUNCTION LISTSeveral types of signals are transmitted from the following units to the driver seat control unit via CAN communication. Component Signal
ABS actuator and electric unit (control unit)
Nissan Murano Vehicle speed signal
Combination meter
Vehicle speed signal
BCM
Ignition switch signal
Key ID signal
Key link signal
Log-in permit signal
TCM
Shift position signal
AV control unit
User information signal
IPDM E/R
Detention switch signal
DESCRIPTIONLog-in function is the function that registers the setting status of various systems and retrieves the status for each Intelligent Key as desired...
Diagnosis Procedure
CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
Harness connector B101
Harness connector M84
Is the inspection result normal?
YES>>
GO TO 2...