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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSINFINITI2008FX45 AWD V8-4.5L (VK45DE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSMISSION CONTROL SYSTEMSDESCRIPTION AND OPERATIONA/T CONTROL SYSTEMTCM FUNCTION
2008 Infiniti FX45 AWD V8-4.5L (VK45DE)
TCM Function
2008 Infiniti FX45 AWD V8-4.5L (VK45DE)SECTION TCM Function
TCM Function
The function of the TCM is to:
^ Receive input signals sent from various switches and sensors.
^ Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
^ Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors or signals. It always controls the optimum shift position and reduces shifting and lockup shocks.
CONTROL SYSTEM DIAGRAM
The function of the TCM is to:
^ Receive input signals sent from various switches and sensors.
^ Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
^ Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors or signals. It always controls the optimum shift position and reduces shifting and lockup shocks.
CONTROL SYSTEM DIAGRAM
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.