B2273

1UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2273: Ignition 2 Monitor Malfunction
B2273 - Ignition 2 Monitor Malfunction

DESCRIPTION

This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG2 relay actuation circuit inside the power source control ECU to the IG2 relay.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT RELAY (Marking: IG2)

(a) Remove the IG2 relay from the engine room No. 2 relay block.





(b) Measure the resistance of the relay.

Standard resistance:





NG -- REPLACE RELAY
OK -- Continue to next step.

2. CHECK WIRE HARNESS (ENGINE ROOM NO. 2 RELAY BLOCK - POWER SOURCE CONTROL ECU)

(a) Remove the IG2 relay from the engine room relay block No. 2.





(b) Disconnect the K73 ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE POWER SOURCE CONTROL ECU