PLUG-SEAL 7G7919 - Caterpillar

System Operation Description:Many of the troubleshooting procedures direct you to a specific electrical connector. Use the following test steps to help determine whether the connector is the cause of the problem. If a problem is found in a connector, repair the connector and verify that the problem is corrected.Intermittent electrical problems are often caused by poor connections. Always check for an active diagnostic code before you open any connection. Immediately after you reconnect the connector, check for codes again. Sometimes, simply disconnecting a connector and then reconnecting the connector can solve a problem. If this occurs, the following conditions are likely causes:
Loose terminals
Bent terminals
Improperly crimped terminals
Improperly mated connectors
Moisture
Corrosion
Illustration 1 g01162078
(1) Jack (2) Plug (3) Jack (4) PlugThe MS connectors have a metal housing. The pins and the sockets are soldered to the electrical wires. The solder connections are usually protected by a chemical potting which prevents access to the solder point.
Illustration 2 g01162080
(1) Contact pin (2) Sealing plug (3) Socket contact (4) Jack (5) Connector for the pin (6) Socket connector (7) Plug (8) Jack (9) Connector for the pin (10) Socket connector (11) Plug (12) Receptacle lock wedge (13) Plug lock wedgeDeutsch connectors have a plastic housing. The pins and the sockets are crimped onto the electrical wires. The connector has a locking mechanism in order to hold the pins and the sockets. These connectors are repairable without cutting the wires.Use the following test steps in order to thoroughly inspect the connectors and determine if the connectors are the cause of the problem.Test Step 1. Check the Connectors.
Always set the engine control to the OFF/RESET mode before you inspect electrical conductors. Remove the electrical power from the engine.
For the MS connectors, make sure that the receptacle is turned fully in the clockwise direction. Check that the threading is properly aligned and securely mated.
For the Deutsch HD connectors, make sure that the plug and the receptacle are aligned properly with the index markings. Make sure that the receptacle is turned fully in the clockwise direction. Verify that the receptacle is clicked into the locked position. Make sure that the two halves cannot be pulled apart.
For the Deutsch DT style, make sure that the