B2273

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): B2273: Ignition 2 Monitor Malfunction
B2273 - Ignition 2 Monitor Malfunction

DESCRIPTION

This DTC is stored when there is a problem in the IG2 output circuit, which is from the inside of the power source control ECU to the IG2 relay.

HINT
When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Power Source Control / Data List.

(e) Read the Data List according to the displays on the Techstream.

HINT
When using the Techstream with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the Techstream and vehicle starts.

Power Source Control





OK:

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

NG -- INSPECT IG2 RELAY
OK -- Continue to next step.

2. CHECK FOR DTC

(a) Clear the DTC Smart Access System With Push-Button Start (for Start Function).

(b) Turn the engine switch on (IG).

(c) Depress the brake pedal.

(d) After 10 seconds have elapsed, check for DTCs.

Result:





B -- REPLACE POWER SOURCE CONTROL ECU Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

3. INSPECT IG2 RELAY

(a) Remove the IG2 relay from the engine room relay block No. 2.





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

Standard Resistance:





NG -- REPLACE IG2 RELAY
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - IG2 RELAY)

(a) Disconnect the J55 connector from the power source control ECU.





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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - IG2 RELAY)

OK -- REPLACE POWER SOURCE CONTROL ECU Removal