СИСТЕМА ПОСАДКИ И ЗАПУСКА, Diagnostic DTC:B2274

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (D-ACC RELAY MONITOR)

   
   

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

      Main Body

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      ACC Relay Monitor	D-ACC 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

   
   

   NG

   GO TO POWER SOURCE MODE DOES NOT CHANGE Click here

   OK

   NORMAL

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

   

   
   

   1. Disconnect the L13, DF and DA 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 L13-22 (ACCD) - DA-19 Always Below 1 Ω L13-22 (ACCD) or DA-19 - 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

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE MAIN BODY ECU