Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2009CAMRY HYBRIDREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERSTARTING SYSTEM (HYBRID)SMART KEY SYSTEMDTC B2273 IGNITION 2 MONITOR MALFUNCTIONINSPECTION PROCEDURE

2009 Toyota Camry Hybrid

Inspection Procedure

2009 Toyota Camry HybridSECTION Inspection Procedure

READ VALUE OF TECHSTREAM

Connect Techstream to the DLC3.
Turn the power switch on (IG) and turn Techstream main switch on.
Read the Data List according to the displays on the tester.
HINT:

When using Techstream with the power 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 tester and vehicle starts.

Main Body:

DATA LIST AND MAIN BODY

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
IG2 Relay Monitor (Outside)	Status of IG2 relay monitor (outer) / ON or OFF	ON: Power switch on (IG) (IG2 relay is ON) OFF: Power switch off (IG2 relay is OFF)	-

OK:

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

NG: Go to step 3

OK: Go to Next Step

CHECK POWER SWITCH CONDITION
1. Check the power source mode change.
  1. When the key is inside the vehicle and the shift lever is in the P position, check that pressing the power switch causes the power source mode to change as follows:
    OK:
    
    off → on (ACC) → on (IG) → off
    
    HINT:
    - If power mode does not change to ON (IG and ACC) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC) ).
    - If power mode does not change to ON (IG) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (IG) ).
    - If power mode does not change to ON (ACC) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC) ).
NG: Go to OTHER PROBLEM

OK: Go to Next Step

INSPECT RELAY (IG2 RELAY)

Remove the IG2 relay from the engine room R/B.
Measure the resistance according to the value (s) in the table below.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
3-5	10 kΩ or higher
3-5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

Fig 1: View Of Relay (IG2 Relay)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY

OK: Go to Next Step

CHECK WIRE HARNESS (ENGINE ROOM R/B - MAIN BODY ECU AND BODY GROUND)

Remove the IG2 relay from the engine room R/B.

Fig 2: Identifying IG2 Relay From Engine Room R/B Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the E6 ECU connector.

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

Standard resistance

RESISTANCE SPECIFICATION

Terminal No. (Symbol)	Condition	Specified Condition
Engine Room R/B IG2 relay terminal 1 -E6-11 (IG2D)	Always	Below 1 Ω
Engine Room R/B IG2 relay terminal 2 -Body ground	Always	Below 1 Ω
E6-11 (IG2D) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MAIN BODY ECU

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.