B2273

2GR-FE STARTING: SMART KEY SYSTEM: B2273: Ignition 2 Monitor Malfunction
B2273 - Ignition 2 Monitor Malfunction

DESCRIPTION

This DTC is output when the IG output circuit from the inside of the power source control ECU to the IG2 relay is malfunctioning.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG) and press Techstream main switch on.

(c) Read the Data List according to the displays on the tester.

Power Source Control:





OK:

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

Result:





C -- INSPECT RELAY (Marking: IG2)

B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

A -- REPLACE POWER SOURCE CONTROL ECU

2. INSPECT RELAY (Marking: IG2)

(a) Remove the IG2 relay from the engine room R/B.





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

Resistance:





NG -- REPLACE RELAY
OK -- Continue to next step.

3. CHECK WIRE HARNESS (ENGINE ROOM R/B - POWER SOURCE CONTROL ECU AND BODY GROUND)

(a) Remove the IG2 relay from the engine room J/B and R/B.





(b) Disconnect the D44 ECU connector.





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

Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER SOURCE CONTROL ECU