M4 Vehicle Service Manual

Overview-11 3. Binding wire harness connectors. (a) When disconnecting the connections, rst press the two ends of the connectors together, then loosen the lock and press the lock pawl to release the connector connector.. (b) When disconnecti disconnecting ng the connector, do not pull on its wire harness. Grasp the joint directly directly.. (c) Check if the joint is deformed, damaged, or port port lost  before connecting connecting the connector. connector. (d) The connector is not successfull y connected until it makes a click sound.

Loosen crimp

Core Deformed terminal

Pull lightly

4. Wire harness connector inspection. (a) Check while connecting the connectors. Squeeze both ends of the connectors to make sure it is completely plugged in and tightly locked. (b) Check when disconnecting the connectors. Check by lightly pulling the wire harness behind the connector’s joint. Look for any unconnected or dropped terminals, loose clamps, or broken wires. Visually inspect for instances of corrosion, metal fragments, oddities, and water, as well as bending, rust, overheating, pollution or deformed terminals, etc. (c)

Check the contact pressure of the terminals. Prepare a plug that matches the connector’s port, plug it into the socket, then check for the proper rate of tension after they are fully engaged.

The terminal is similar to a plug

Correct

Incorrect

5. Maintenance methods for wire harness connector terminals. (a) Use an airgun or rag to clean the contact contact points if the terminals become dusty. Do not use sandpaper to clean it, as that could damage the electroplated layer. (b) If the contact pressure seems unusual, unusual, change it to a socket of the same type. (c) Any terminal that has been damaged, deformed, or corroded must be changed. If the terminal is not locked to the case, then the case needs to be replaced too.