DTC Advanced Diagnostics: P0705
DTC P0705:Transmission Range Switch (Multiple Shift - Position Input) (Engine Type: J35Y1)

General Description

Transmission range switch contact point input matrix

Shift lever position
Input per switch
ATP-P
ATP-R
ATP
RVS
ATPN
ATPD
ATPS
ATP
FWD
P
O
X
X
X
X
X
X
R
X
O
O
X
X
X
X
N
X
X
X
O
X
X
X
D
X
X
X
X
O
X
O
S
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.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Execution
Continuous
Sequence
None
Duration
1 second or more
DTC Type
One drive cycle, MIL on, A/T gear position indicator blinks
OBD Status
PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions
Condition
Minimum
Maximum
Battery voltage
[BATTERY VOLTAGE]
11 V
–
[ ]: HDS Parameter

Malfunction Threshold
One of these conditions occurs.
The PCM detects the selected range switch input and another range switch input (except FWD switch input [Forward Switch(ATPFWD)]) simultaneously for at least 1 second.
The PCM detects the P, R, or N range switch input [A/T P, R, or N Switch] and the FWD switch input [Forward Switch(ATPFWD)] simultaneously for at least 1 second.
The PCM detects the D or S range switch input [A/T D or S Switch] and the RVS switch input [Reverse Switch(ATPRVS)] simultaneously for at least 1 second.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Transmission range switch line short to ground
Transmission range switch failure
PCM internal circuit failure

Confirmation Procedure
Operating Condition
1.
Start the engine.
2.
With the brake pedal pressed, place the shift lever in each position for at least 1 second.
With the HDS
None.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on, the A/T gear position indicator blinks, and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The A/T gear position indicator comes off by pressing the engine start/stop button to select the OFF mode. The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.