Shift Solenoid Valves "A" & "B"
WARNING: This page is about a different car, the 2002 Nissan Sentra, 2002 Infiniti G20, 2001 Nissan Sentra, and 2001 Infiniti G20. However, it is still accessible from the selected car via links, so may be relevant.
The TCM/ECM activates shift solenoid valves according to signals from TP sensor and revolution sensor. Optimum gear position is selected following memorized shift schedule. When solenoid valve is commanded on, drain circuit closes and pilot pressure is applied to shift valve.
SHIFT SOLENOID OPERATION (1)
| Gear Position | Shift Solenoid "A" | Shift Solenoid "B" | |||
|---|---|---|---|---|---|
| "P" Or "N" | On | On | |||
| "OD" | |||||
| 1st Gear | On | On | |||
| 2nd Gear | Off | On | |||
| 3rd Gear | Off | Off | |||
| 4th Gear | On | On | |||
| "D" (Drive) | |||||
| 1st Gear | On | On | |||
| 2nd Gear | Off | On | |||
| 3rd Gear | Off | Off | |||
| "2" (Second) | |||||
| 1st Gear | On | On | |||
| 2nd Gear | Off | On | |||
| "L" (Low) | On | On | |||
|
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