B2272

2GR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2272: Ignition 1 Monitor Malfunction

DTC B2272 - Ignition 1 Monitor Malfunction

DESCRIPTION

This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG1 relay actuation circuit inside the power source control ECU to the IG1 relay.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (COWL SIDE J/B RH - POWER SOURCE CONTROL ECU AND BODY GROUND)





(a) Disconnect the DA and DD J/B connectors.
(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 -- Continue to next step.
2. CHECK COWL SIDE J/B RH (RH-IG1 RELAY)





(a) Disconnect the DD and DM J/B connectors.
(b) Measure the resistance of the J/B connectors.
Standard resistance:






NG -- REPLACE COWL SIDE J/B RH
OK -- REPLACE POWER SOURCE CONTROL ECU