Dtc B2272 Ignition 1 Monitor Malfunction. Corolla Auris

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER

CHECK ENGINE SWITCH CONDITION

INSPECT RELAY (IG1 RELAY)

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - MAIN BODY ECU)

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - BATTERY AND BODY GROUND)

DESCRIPTION

УКАЗАНИЕ:

When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedures for the engine immobiliser system.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and turn the intelligent tester main switch on.
   

3. Select the item below in the Data List, and read the display on the tester.
   

   УКАЗАНИЕ:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   IG1 Relay Mon1	Status of IG1 relay monitor (outer) / ON or OFF	ON: Engine switch on (IG) (IG1 relay is ON) OFF: Engine switch off (IG1 relay is OFF)	-

   OK:

   "ON" (engine switch on (IG)) appears on the screen.
   

1. Check the power source mode change.
   

   1. for AT:
      When the key is inside the vehicle and the shift lever is in the P position, check that pressing the engine switch causes the power source mode to change as follows:
      for MT:
      When the key is inside the vehicle, check that pressing the engine switch causes the power source mode to change as follows:
      

      OK:

      off → on (ACC) → on (IG) → off
      

      УКАЗАНИЕ:

      1. If power source mode does not change to ON (IG and ACC) (See page Нажмите здесь).
         
      2. If power source mode does not change to ON (IG) (See page Нажмите здесь).
         

1. Remove the IG1 relay from the instrument panel junction block.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	When battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
   3 - 5	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

1. Disconnect the 2F junction block connector.
   

   
   
   
   

2. Disconnect the E51 ECU connector.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   2F-3 - E51-6 (IG1D)	Always	Below 1 Ω
   E51-6 (IG1D) - Body ground	Always	10 kΩ or higher

1. Disconnect the 2E and 2G junction block connectors.
   

   
   
   
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   2E-17 - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   2G-1 - Body ground	Always	11 to 14 V