Dtc B2271 Ignition Hold Monitor Malfunction

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WHETHER DTC OUTPUT RECURS

INSPECT FUSE (AM2)

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

DTC B2271 Ignition Hold Monitor Malfunction


DESCRIPTION

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

DTC Code
Detection Condition
Trouble Area
B2271
The IG1 No. 3 relay actuation circuit or integration relay (IG2 relay) actuation circuit inside the main body ECU is abnormal.
  1. Main body ECU
  1. AM2 fuse
  1. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2271 Ignition Hold Monitor Malfunction


INSPECTION PROCEDURE

1.CHECK WHETHER DTC OUTPUT RECURS

  1. Clear the DTCs (Click here).

  1. Check whether DTC B2271 is output.

    Result
    Result
    		Proceed to
    DTC B2271 output
    		A
    No DTC output
    		B


B
USE SIMULATION METHOD TO CHECK (Click here)
A


2.INSPECT FUSE (AM2)

  1. Remove the AM2 fuse from the engine room relay block.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    AM2 fuse
    		Always
    		Below 1 Ω


NG
REPLACE FUSE
OK


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

Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2271 Ignition Hold Monitor Malfunction

  1. Disconnect the E1, E2 and 2D main body ECU connectors.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E1-6 (AM1) - Body ground
    		Always
    		11 to 14 V
    E2-1 (AM2) - Body ground
    		Always
    		11 to 14 V
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2D-62 (GND2) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU