B2272

2GR-FE STARTING: SMART KEY SYSTEM: B2272: Ignition 1 Monitor Malfunction
B2272 - Ignition 1 Monitor Malfunction

DESCRIPTION

This DTC is output when the IG output circuit from the inside the power source control ECU to the IG1 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) Select the items below in the Data List, and read the displays on the tester.

Power Source Control:

OK:

"OK" (engine switch on (IG)) appears on the screen.

Result:

C -- INSPECT RELAY (Marking: IG1)

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

A -- REPLACE POWER SOURCE CONTROL ECU

2. INSPECT RELAY (Marking: IG1)

(a) Remove the IG1 relay from the instrument panel J/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 (INSTRUMENT PANEL J/B - POWER SOURCE CONTROL ECU)

(a) Disconnect the II J/B connector.

(b) Disconnect the D44 ECU connector.

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

4. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B - BATTERY AND BODY GROUND)

(a) Disconnect the IF and IA J/B connectors.

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

Resistance:

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

5. INSPECT INSTRUMENT PANEL J/B

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

Resistance:

NG -- REPLACE INSTRUMENT PANEL J/B

OK -- REPLACE POWER SOURCE CONTROL ECU