Dtc B2273 Ignition 2 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

READ VALUE USING INTELLIGENT TESTER (IG2 RELAY MONITOR (INSIDE))

CHECK WHETHER DTC OUTPUT RECURS

INSPECT FUSE (IG2 MAIN)

INSPECT INTEGRATION NO.1 RELAY (IG2 RELAY)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION RELAY (IG2 RELAY) AND BODY GROUND)

DTC B2273 Ignition 2 Monitor Malfunction


DESCRIPTION

This DTC is stored when a malfunction occurs in the IG2D output circuit, which is between the integration relay (IG2 relay) actuation circuit inside the main body ECU and the integration relay (IG2 relay).

DTC Code
Detection Condition
Trouble Area
B2273
The integration relay (IG2 relay) actuation circuit inside the main body ECU or other related circuit is malfunctioning.
  1. Main body ECU
  2. IG2 MAIN fuse
  3. Integration relay (IG2 relay)
  4. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2273 Ignition 2 Monitor Malfunction


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (IG2 RELAY MONITOR (INSIDE))

  1. Use the Data List to check if the integration relay (IG2 relay) is functioning properly.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    IG2 Relay Monitor (Inside)
    		Integration relay (IG2 relay) inner relay monitor/ON or OFF
    		ON: Engine switch on (IG)
    OFF: Engine switch off
    		-
    OK:
    When the engine switch is turned on (IG), ON is displayed on the tester.


NG
Go to step 3
OK


2.CHECK WHETHER DTC OUTPUT RECURS

  1. Clear the DTCs (Click here).

  1. Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2273 is output.

    Result
    Result
    		Proceed to
    No DTC output
    		A
    DTC B2273 output
    		B


B
REPLACE MAIN BODY ECU
A

USE SIMULATION METHOD TO CHECK (Click here)

3.INSPECT FUSE (IG2 MAIN)

  1. Remove the IG2 MAIN fuse from the integration relay.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    IG2 MAIN fuse
    		Always
    		Below 1 Ω


NG
REPLACE FUSE (IG2 MAIN)
OK


4.INSPECT INTEGRATION NO.1 RELAY (IG2 RELAY)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2273 Ignition 2 Monitor Malfunction

  1. Install the IG2 MAIN fuse to the integration relay.

  1. Remove the integration relay 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
    1B-8 - 1C-1
    		Battery voltage applied to terminals 1B-6 and 1B-7
    		Below 1 Ω
    1B-8 - 1C-1
    		Battery voltage not applied to terminals 1B-6 and 1B-7
    		10 kΩ or higher


NG
REPLACE INTEGRATION NO.1 RELAY (IG2 RELAY)
OK


5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION RELAY (IG2 RELAY) AND BODY GROUND)

Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2273 Ignition 2 Monitor Malfunction

  1. Disconnect the E2 main body ECU connector.

  1. Disconnect the 1B integration relay connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E2-11 (IG2D) - 1B-6
    		Always
    		Below 1 Ω
    1B-7 - Body ground
    		Always
    		Below 1 Ω
    E2-11 (IG2D) or 1B-6 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU