B2784

ENGINE IMMOBILIZER: ENGINE IMMOBILIZER SYSTEM: B2784: Antenna Coil Open / Short

DTC 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

PROCEDURE

1. CHECK DTC OUTPUT
(a) Delete the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- END
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ENGINE SWITCH)




(a) Disconnect the P33 ECU and J31 switch connectors.
(b) Measures 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. REPLACE ENGINE SWITCH
(a) Replace the engine switch Removalfor 4GR-FE, Removal for 2GR-FE).
NEXT -- Continue to next step.
4. CHECK ENGINE START
(a) Check that the engine starts.
OK:
The engine starts.
NG -- REPLACE CERTIFICATION ECU
OK -- END