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DTC P0705 (2017 2018 2019): General Description

GHH452257Courtesy of HONDA, U.S.A., INC.

Transmission range switch contact point input matrix

Shift lever position Input per switch
ATP-P ATP-R ATPRVS ATPN ATPD ATPL ATPFWD
O X X X X X X
X O O X X X X
X X X O X X X
X X X X O X O
X X X X X O O

O: Closed

X: Open

The transmission range switch is attached to a control shaft. Operating the shift lever makes the control shaft rotate via the shift cable. The A/T gear position indicator shows which position is selected according to the Low/High signal combinations, which vary based on the control shaft rotational angle. The control shaft changes the position of the transmission range switch, activates the manual valve, and switches hydraulic pressure to shift the transmission through forward/neutral/reverse. The transmission range switch signal is used to determine the shift schedule. The voltage is high (5 V or 12 V) at the powertrain control module (PCM) input terminal when each transmission range switch position is open, and it is low (0 V) when each switch is closed. If the PCM detects multiple switch inputs instead of the correct switch input for the selected range at that time, it detects a malfunction and stores a DTC.