DTC P2800
DTC P2800: Transmission Range Switch ATP RVS Switch (Open or Short)
General Description
Transmission range switch contact point input matrix
| Shift lever position | Input per switch | ||||||
|---|---|---|---|---|---|---|---|
| ATP-P | ATP-R | ATPRVS | ATPN | ATPD | ATPS (ATPL) | ATPFWD | |
| 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 |
| L | 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 RVS switch is open while driving the vehicle in R, the PCM detects an RVS switch open failure and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | Depending on the driving conditions |
| DTC Type | Two drive cycles, MIL on, A/T gear position indicator blinks |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Engine speed [ENGINE SPEED] | 500 rpm | - |
[ ]: HDS Parameter
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [BATTERY VOLTAGE] | 11 V | - |
| Shift lever position | R | |
[ ]: HDS Parameter
Malfunction Threshold
The R position signal input [A/T R SWITCH] is detected but the RVS position signal input [REVERSE SWITCH (ATPRVS)] is not detected.
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 ATPRVS line open (includes a loose or disconnected connector)
- Transmission range switch failure
- Shift cable adjustment failure
- PCM internal circuit failure
Confirmation Procedure
Operating Condition
- 1.
Start the engine.
- 2.
Drive the vehicle in R at 3 mph (5 km/h) or less for at least 2 seconds.
- 3.
Drive the vehicle in R at 3 mph (5 km/h) or more for at least 2 seconds.
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.
Conditions for clearing the DTC
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 or by disconnecting the 12 volt battery.