B2273

1NZ-FXE STARTING: SMART KEY SYSTEM: B2273: Ignition 2 Monitor Malfunction

DTC B2273 - Ignition 2 Monitor Malfunction

DESCRIPTION

This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG2 relay actuation circuit inside the power source control ECU to the IG2 relay.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING DATA LIST (IG2 RELAY)
(a) Connect Techstream to the DLC3.
(b) Turn the power switch ON (IG) and press Techstream main switch ON.
(c) Read the DATA LIST according to the displays on the tester.

Power source control ECU





OK:
ON (power switch ON (IG)) appears on the screen.
OK -- REPLACE POWER SOURCE CONTROL ECU
NG -- Continue to next step.

2. CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND)




(a) Disconnect the 3I junction block connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

3. CHECK ENGINE ROOM RELAY BLOCK




(a) Disconnect the 3I and 3K junction block connectors.
(b) Measure the resistance of the junction block connectors.
Standard resistance:






NG -- REPLACE ENGINE ROOM RELAY BLOCK
OK -- REPLACE POWER SOURCE CONTROL ECU