Engine Immobiliser System (w/ Smart Key System)

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM (w/ Smart Key System): B2784: Antenna Coil Open / Short
B2784 - Antenna Coil Open / Short

DESCRIPTION

This DTC is output when there is an open or short malfunction in the key coil (built into engine switch).





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
If the certification ECU is replaced, register the key and ECU communication ID Engine Immobiliser System (W/ Smart Key System).

PROCEDURE

1. CHECK DTC OUTPUT

(a) Delete the DTCs Engine Immobiliser System (w/ Smart Key System).

(b) Recheck for DTCs Engine Immobiliser System (w/ Smart Key System).

Result:





B -- END
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ENGINE SWITCH)

(a) Disconnect the E58 ECU and E52 switch connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK ENGINE SWITCH

(a) After replacing the engine switch Removal with a normal one, check that the engine starts.

OK:

The engine starts.

NG -- REPLACE CERTIFICATION ECU

OK -- END