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:
How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the engine immobiliser
system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
cran ...
Check for open circuit
For an open circuit in the wire harness in fig. 1,
Check the resistance or voltage, as described below.
Check the resistance.
Disconnect connectors a and c, and measure
the resistance between them.
Standard resistance (fig. 2)
Hint:
Measure the resistance while lightly s ...
Rear combination light assembly
Components
Removal
Hint:
Use the same procedures for the rh and lh sides.
The procedures listed below are for the lh side.
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal t ...
