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.

1994 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE

Throttle Control Module (TCM)

On harness side measure voltage between terminals No. 10 or 20, and terminals No. 2, 3, 4, 5, 7, 14 and 15. See Figure-Figure and Figure-Figure . See TCM INSPECTION TABLE.

Fig 1: Identifying TCM Location & Harness Side Terminals (1 Of 2)

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.