P0871

DTC P0871

DTC Detecting Condition and Trouble Area






Wiring Diagram

Refer to P0641 DTC P0641.

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

- Select a level road with no traffic to minimize the risk of accident.
- Perform the test extremely carefully.
- Perform the road test using 2 persons, a driver and an assistant.

NOTE:

- If DTC other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
- Check that the following conditions are satisfied when using this procedure.


- Battery voltage > 10.5 V

- 0.5 < Gear ratio < 1.0


1) Drive with 30 - 50 km/h (19 mile/h - 31 mile/h) constantly for 40 sec. or more at "D" range. (Keep throttle valve opening constantly in this step).
2) Stop vehicle and turn ignition switch to OFF position.
3) Repeat Step 1) through 2) twice.
4) Turn ignition switch to ON position.

DTC Troubleshooting



1.
Was "CVT System Check" performed?
YES
Go to Step 2.
NO
Go to CVT System Check.

2. Sensor power supply check

Turn off ignition switch and disconnect solenoid connector.
Check for proper terminal connection to solenoid connector.
If connections are OK, turn ignition switch to ON position.
Check that voltage between sensor power supply circuit (B1) and vehicle body ground is 5 V.

Is it in good condition?
YES
Go to Step 3.
NO
Repair or replace defective wire harness.

3. Primary pressure sensor and its circuit check

Check primary pressure sensor and its circuit according to Step 3 through 4 of P0842 DTC P0842 / P0843.

Are they in good condition?
YES
Go to Step 4.
NO
Repair or replace defective parts.

4. Secondary pressure sensor and its circuit check

Check secondary pressure sensor and its circuit according to Step 2 through 3 of P0847 DTC P0847 / P0848.

Are they in good condition?
YES
Go to Step 5.
NO
Repair or replace defective parts.

5. Stall test

Perform stall test. Stall Test

Is it in good condition?
YES
Substitute a known-good TCM and recheck.
NO
Replace CVT assembly.