DTC    B2273    Ignition 2 Monitor Malfunction

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DESCRIPTION

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

DTC Code
Detection Condition
Trouble Area
B2273
IG2 relay actuation circuit inside main body ECU or other related circuit is malfunctioning
  1. Main body ECU
  1. IG2 relay
  1. Wire harness or connector

WIRING DIAGRAM


A149374E02


INSPECTION PROCEDURE

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

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

    Main body ECU 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    IG2 Relay Monitor (Inside)
    		IG2 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
Перейдите к шагу 3
OK


2.CHECK ENGINE SWITCH (SWITCH CONDITION)

  1. Ensure the key is inside the cabin.

  1. Check that the power source mode changes as shown below each time the engine switch is pushed.

    OK:
    off → on (ACC) → on (IG) → off



NG
GO TO POWER SOURCE MODE DOES NOT CHANGE (Нажмите здесь)
OK

NORMAL 

3.INSPECT IG2 RELAY
B060778E80

  1. Remove the IG2 relay from the engine room No. 2 relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - 5
    		Always
    		10 kΩ or higher
    3 - 5
    		When battery voltage is applied to terminals 1 and 2
    		Below 1 Ω



NG
REPLACE IG2 RELAY
OK


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

A150540E01

  1. Remove the IG2 relay from the engine room No. 2 relay block.

  1. Disconnect the L12 main body ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Relay block IG2 relay terminal 1 - L12-11 (IG2D)
    		Always
    		Below 1 Ω
    Relay block IG2 relay terminal 2 - Body ground
    		Always
    		Below 1 Ω
    Relay block IG2 relay terminal 1 or L12-11 (IG2D) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU