ENTRY AND START SYSTEM, Diagnostic DTC:B2272

DESCRIPTION

This DTC is output when a malfunction occurs in the IG1D output circuit, which is between the D-IG1-1 relay actuation circuit inside the main body ECU and the D-IG1-1 relay.

WIRING DIAGRAM

*a	from Battery
*b	Main Body ECU

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (IG1 RELAY MONITOR (OUTSIDE))

   
   

   1. Use the Data List to check if the D-IG1-1 relay is functioning properly.

      Main Body

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      IG1 Relay Monitor (Outside)	D-IG1-1 relay outer 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

   CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND) Click here

   OK

2. CHECK ENGINE SWITCH (SWITCH CONDITION)

   
   

   1. Ensure the key is inside the cabin.

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

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

   
   

   OK

   NORMAL

   NG

   GO TO POWER SOURCE MODE DOES NOT CHANGE Click here

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

   

   *1	Front view of wire harness connector: (to Main Body ECU)

   
   

   1. Disconnect the L13, DA and DF main body ECU connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition L13-3 (IG1D) - DA-32 Always Below 1 Ω L13-3 (IG1D) or DA-32 - Body ground Always 10 kΩ or higher DA-40 - Body ground Always Below 1 Ω

      Standard voltage
      Tester Connection Condition Specified Condition DF-1 - Body ground Always 11 to 14 V

   
   

   OK

   REPLACE MAIN BODY ECU

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR