Contents: Examination ⇊ Replacement ⇊
Examination
1. Three pairs of transmission control solenoid valves are subject to testing: Lock/Shift Control Valve A, Shift Control Valves B and C, and Clutch Pressure Control Valves.
Lock/Shift Control Solenoid Valve A
2. Disconnect the 2-pin electrical connector of the lock/shift control solenoid valve assembly A, and measure the resistance between each connector terminal (valve side) and ground. Compare the measurement results with the specifications. Replace the valve assembly if necessary.
3. Using a jumper wire, connect each terminal of the connector to the positive battery terminal one by one; you should hear a distinct audible click as each valve operates. If you do not hear a click, take the vehicle to a service station for a full diagnosis of the ECM and solenoid circuits.
Shift control solenoid valves B and C
4. Disconnect the 2-pin electrical connectors of the shift control solenoid valves and measure the resistance between terminals 1 and 2 of each. Compare the measurement results with the requirements of the Specifications. If necessary, replace the defective valve assembly.
5. Using a jumper wire, connect terminal 2 of each valve connector to the positive pole of the battery in turn - terminal 1 should be grounded. You should hear a distinct audible click as each valve operates. If you do not hear a click, the faulty valve must be replaced.
Electromagnetic valves for controlling clutch operation
6. Disconnect the clutch pressure control valve connectors and measure the resistance between terminals 1 and 2 of each connector. Compare the measurement results with the specifications. Replace the defective valve if necessary.
7. Using a jumper wire, connect terminal 1 of each valve to the positive pole of the battery in turn - terminal 2 should be grounded. You should hear a distinct audible click as each valve operates. If you do not hear a click, the faulty valve must be replaced.
Replacement
Note: It is not possible to replace just one of the electromagnetic valves (A and clutch pressure control) individually - they are replaced as an assembly, whereas valves B and C can be replaced separately.
1. Remove the mounting bolts and remove the valve assembly.
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2. Thoroughly wipe the mating surfaces and clean the oil passages.
3. Replace the sealing gasket/ring and install the new valve assembly in its original place. Tighten the mounting bolts to the required torque.
4. Check the electrical connector for signs of contamination and oxidation of the contact terminals, clean and reconnect if necessary.
5. Check the proper functioning of the electromagnetic control valves.
The article is based on information from the website: hondabook