SHIFT PATTERN : System Description
WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
INPUT/OUTPUT SIGNAL CHART
INPUT/OUTPUT SIGNAL DESCRIPTION
| Sensor | Input signal to TCM | TCM function | Actuator | ||
|---|---|---|---|---|---|
| Input speed sensor 1, 2 | Input speed | Shift pattern control |
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| Output speed sensor | Vehicle speed | ||||
| A/T fluid temperature sensor | ATF temperature | ||||
| ECM | Engine speed signal(1) | ||||
| Accelerator pedal position signal(1) | |||||
| Closed throttle position signal(1) | |||||
| Engine and A/T integrated control signal (engine torque)(1) | |||||
| BCM | Stop lamp switch signal(1) | ||||
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SYSTEM DESCRIPTION
It automatically selects the shift pattern (such as road environment and driving style) suitable for the various situations so as to allow the vehicle to be driven efficiently and smoothly.
TCM judges up/down slope according to engine torque data transmitted from the ECM and vehicle speed. Fixing at 4GR, 5GR or 6GR on an up-slope prevents shift hunting and controls the vehicle to gain optimum driving force. On a down-slope, automatic shift-down to 4GR, 5GR or 6GR controls to gain optimum engine brake.