Description
Performs ID verification through BCM when mechanical key is inserted in the ignition key cylinder.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC DETECTION LOGIC 
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Insert mechanical key into the key cylinder.
2. Check "Self diagnostic result" with CONSULT.
Is DTC detected?
YES >> Refer to SEC "Diagnosis Procedure".
NO >> Inspection End.
1.PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the onscreen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES >> Mechanical key was unregistered.
NO >> BCM is malfunctioning.
B2190, P1614 NATS antenna AMPDescription Performs ID verification through BCM and NATS antenna amplifier when ignition key is inserted and ignition switch turned ON. Prohibits the start of engine when an unregistered ID of ...

Description BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with ECM if ignition switch is turned ON and starts the engine if the ID is OK ...
Electric ignition system
ELECTRIC IGNITION SYSTEM : System Diagram
ELECTRIC IGNITION SYSTEM : System Description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*3
Piston position
Ignition timing control
Igni ...
P0890 TCM
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0890
Transmission Control Module
Power Relay Sense Circuit Low
Under the following diagnosis
conditions, the battery voltage
supplied to the TCM is less than
...