B2272

1UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2272: Ignition 1 Monitor Malfunction

DTC B2272 - Ignition 1 Monitor Malfunction

DESCRIPTION

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






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (D-IG1 RELAY MONITOR (OUTSIDE))
(a) Use the Data List to check if the D-IG1 relay is functioning properly.

Main Body





OK:
When the engine switch is turned on (IG), ON is displayed on the Techstream.
NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND)
OK -- Continue to next step.

2. CHECK ENGINE SWITCH (SWITCH CONDITION)
(a) Ensure the key is inside the cabin.
(b) 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 Power Source Mode does not Change
OK -- NORMAL
3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND)




(a) Disconnect the L13, DA and DF main body ECU connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
Standard resistance:






Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU