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Home >> Acura >> 2018 >> RLX Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - Advanced Diagnostics (Except Hybrid) >> Advanced Diagnostics >> DTC: P2820 >> Operation Chart

Operation Chart

Shift Position/Mode Clutch Pressure Control Solenoid Valve Operation Shift Solenoid Valve Operation
A B C D E F G H A B C D E F G
P x x/o x x x x x x o/x o/x x o x o x
R o/x o x x x o x x o o x x o x x
R* o o x o o x x x x→o x→o x x o x x
N x x/o x x x x x x o/x o/x o o o x x
D Low o/x x x x x o o o/x x x o/x x o x x
2nd o/x x o x x o o o/x x x o/x x o x x
3rd o/x o x x x o o o/x x x o/x x o x x
4th o/x o o x x x o o/x x x o/x x o x x
5th-A o/x o x o x x o o/x x x o/x x o x x
5th-B** o/x x o o x x o o/x x x o/x x o x x
6th o/x o o o x x x o/x x x o/x x o x x
7th o/x o x o x o x o/x x x o/x x o x x
8th o/x x o o x o x o/x x x o/x x o x x
9th o/x x x o o o x o/x x x o/x x o x x
10th o/x x o o o x x o/x x x o/x x o x x

o: Operated (Clutch pressure control solenoid valve is linear controlled or shift solenoid valve is ON.)

x: Not operated (Clutch pressure control solenoid valve and shift solenoid valve are OFF.)

*: Reverse preparation

**: Select from 6th only

Clutch pressure control solenoid valve A controls the line pressure in the hydraulic circuit. A spool in clutch pressure control solenoid valve A pushes the valve according to the duty cycle controlled by the transmission control module (TCM) (the hydraulic pressure is proportional to the current). Each transmission fluid pressure sensor value while steady forward driving or while reverse preparation (from reverse shifting command to completion) is monitored, and if the transmission fluid pressure sensor value is within a specified range, the TCM detects a clutch pressure control solenoid valve A stuck off failure and stores a DTC.