B2273

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

DESCRIPTION

This DTC is stored when a malfunction occurs in the IG output circuit, which is between the IG2 relay actuation circuit inside the main body ECU and the IG2 relay.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (IG2 RELAY MONITOR (INSIDE))

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Body Electrical / Main Body / Data List.

(d) Read the display on the Techstream.

Main Body





OK:

When the engine switch is turned on (IG), ON is displayed on the Techstream.

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

2. CHECK SWITCH CONDITION (ENGINE SWITCH)

(a) Make sure that the electrical key is inside the cabin.

(b) With the shift lever in P, 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 -- USE SIMULATION METHOD TO CHECK Electronic Circuit Inspection Procedure

3. INSPECT IG2 RELAY

(a) Remove the IG2 relay from the engine room No. 1 relay block.





(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 (IG2 RELAY - MAIN BODY ECU AND BODY GROUND)

(a) Remove the IG2 relay from the engine room No. 1 relay block.





(b) Disconnect the E16 main body ECU connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)