B2271

2GR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2271: Ignition Hold Monitor Malfunction

DTC B2271 - Ignition Hold Monitor Malfunction

DESCRIPTION

This DTC is output when the IG output circuits inside the power source control ECU are open or short.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (AM2)
(a) Remove the AM2 fuse from the cowl side J/B RH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND)




(a) Disconnect the K73 ECU connector.
(b) Measure the voltage and resistance of the wire harness side connector.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE POWER SOURCE CONTROL ECU