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.

2009 Infiniti M45 BaseFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

Turn ignition switch OFF.
Connect GST to data link connector (1), which is located under
LH dash panel near the hood opener handle.

Fig 1: Connecting GST To Data Link Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
Turn ignition switch ON.
Enter the program according to instructions on the screen or in the operation instructions.
(*: Regarding GST screens in this information, sample screens are shown.)

Fig 2: Display - GST Sample Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
Perform each diagnostic service according to each service procedure.

For further information, see the GST Operation Instructions of the tool maker .

Fig 3: Generic Scan Tool Display - READINESS TESTS

Courtesy of NISSAN MOTOR CO., U.S.A.

Factory Service Tools

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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.