B2271

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

DESCRIPTION

This DTC is output when the IG output circuits inside the main body ECU are open or shorted.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check whether DTC B2271 recurs.

Result





B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- Continue to next step.

2. INSPECT FUSE (AM2)

(a) Remove the AM2 fuse from the passenger side junction block.

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

Standard resistance:





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

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY, BODY GROUND)





(a) Disconnect the L13, L12 and DA main body ECU connectors.

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

Standard voltage:





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU