Toyota RAV4 (XA40) 2013-2018 Service Manual: Transmission range sensor circuit malfunction (prndl input)
Description
The park/neutral position (pnp) switch detects the shift lever position and sends signals to the ecm.
Monitor description
These dtcs indicate a problem with the park/neutral position switch and the wire harness in the park/ neutral position switch circuit.
The park/neutral position switch detects the shift lever position and sends a signal to the ecm.
For security, the park/neutral position switch detects the shift lever position so that the engine can be started only when the shift lever is on p or n.
The park/neutral position switch sends a signal to the ecm according to the shift lever position (r, d, 3, 2 or l).
The ecm determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The ecm will illuminate the mil and store the dtc.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Component operating range
Wiring diagram
Inspection procedure
Hint:
Using the intelligent tester's data list allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the data list early in troubleshooting is one way to save time.
Notice:
In the table below, the values listed under "normal condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
- Warm up the engine.
- Turn the ignition switch off.
- Connect the intelligent tester to the can vim. Then connect the can vim to the dlc3.
- Turn the ignition switch on and turn the tester on.
- Enter the following menus: diagnosis / enhanced obd ii / data list.
- Follow the instructions on the tester and read the data list.
- Check wire harness (park/neutral position switch - battery)
- Disconnect the b26 park/neutral position switch connector.
- Turn the ignition switch on.
- Measure the voltage.
Standard voltage 
- Inspect park/neutral position switch
- Disconnect the b26 park/neutral position switch connector.
- Measure the resistance of the park/neutral position switch when the shift lever is moved to each position.
Standard resistance 
- Check wire harness (ecm - battery and body ground)
- Disconnect the b30 ecm connector.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage 
Hint:
*: The voltage will drop slightly due to the illumination of the back-up light.
- Check wire harness (park/neutral position switch - transmission control switch)
- Disconnect the e40 switch connector.
- Turn the ignition switch on.
- Measure the voltage when the shift lever is moved to each position.
Standard voltage 
- Inspect transmission control switch
- Disconnect the e40 switch connector.
- Measure the resistance of the switch when the shift lever is moved to each position.
Standard resistance 
- Check wire harness (transmission control switch - battery and body ground)
- Disconnect the a9 ecm connector.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage 
Hint:
*: The voltage will drop slightly due to the illumination of the back-up light.
Diagnostic trouble code chart
If a dtc is displayed during the dtc check, check the circuit
listed in the table below and proceed to the page given.
Hint:
*1: "Comes on" means the malfunction indicator lamp
(mil) ...
Transmission fluid temperature sensor "A" circuit
Description
The automatic transmission fluid (atf) temperature sensor converts the atf
temperature into a
resistance value which is input into the ecm.
The ecm applies a voltage to the temp ...
Other materials:
Installation
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Install front door belt moulding
assembly lh
Attach the claws to install the belt moulding.
Hint:
Confirm that the moulding is firmly installed.
Install outer r ...
Registering a bluetooth®
phone for the first time
To use the hands-free system, it is necessary to register a
bluetooth® phone with the system.
Once the phone has been registered, it is possible to use the
hands-free system.
For details about registering a bluetooth® device
Turn the bluetooth® connection setting of your cellular phon ...
System voltage
Description
The battery supplies electricity to the ecm even when the ignition switch is
in the off position. This
power allows the ecm to store data such as dtc history, freeze frame data and
fuel trim values. If the
battery voltage falls below a minimum level, the memory is cleared and ...
