Pay close attention to the engine load, throttle position, RPM, and road speed because a P can be difficult to detect. Monitor how the Converter Lockup Solenoid responds to an increased amount of throttle. The Lockup Solenoid duty cycle should go to 0 percent when the Throttle Position Sensor is above 40 percent and should return to percent when the throttle is returned back to 15 to 20 percent.
The duty cycle should go to 0 percent whenever the throttle is fully released and the vehicle has decelerated below 30 MPH. The Lockup Solenoid duty cycle should go to 0 percent whenever the brake pedal is applied, regardless of speed.
This can be very helpful in the diagnosis of an intermittent P Inspect this wiring for any signs of damage or problems that could cause short -, or open circuits.
Also, perform resistance and continuity checks on the wiring, and replace all wiring with OEM replacements if any deviation from specified values is found. Take note that the actual converter clutch solenoid forms a part of the circuit, and it must therefore be tested as well. Disconnect the solenoid from the rest of the wiring, and test it for resistance and continuity.
Compare obtained readings to the values stated in the manual, and replace the solenoid if readings do not fall within the range specified by the manufacturer.
Once all wiring is installed, secured, and reconnected, clear all codes, and attempt to operate the control solenoid manually by using the scanner.
If the scanner confirms that the solenoid is indeed reacting correctly, continue to activate it several times to see if it fails to react on some input cycles. If the solenoid fails to work even once, there is likely to be an intermittent fault present, which can be extremely challenging to find and repair.
In some cases, it might be necessary to allow the fault to worsen before an accurate diagnosis and definitive repair can be made. Consult the manual on the correct grade and type of fluid for the application, and follow the instructions provided in the manual to ensure that the transmission is filled with the correct volume of fluid. Allow the transmission to reach operating temperature by monitoring the transmission fluid temperature with the scanner, but cycle the transmission through its full range of gears including reverse to make sure that fluid is circulating properly.
Repair all leaks before test-driving the vehicle to prevent possible damage to the transmission. If there are no fluid leaks present and the transmission is hot, clear all codes and operate the vehicle for at least one complete drive cycle with the scanner connected to see if the code returns. If the code does not return after a few complete drive cycles, the repair can be considered successful. This site uses Akismet to reduce spam.
Learn how your comment data is processed. Skip to content. Notify of. Miles: Miles. If there is a big jump in engine speed, there is no lock-up. The list of automotive Makes at the right edge of the screen. Enter the 5 character trouble codes in the search box and submit the search. If your OBD-II trouble codes are for a different car, select that vehicle series before searching for the diagnostic codes because not all OBD2 codes used by one manufacture are used by the other makes.
0コメント