CONNECTOR-PORT 8D9088 - Caterpillar

These tests are designed to establish whether a component and related parts are working correctly and if not, to pinpoint the faulty component.These tests may also be used for basic health checks, to determine if problems exist, or as a guide to check for intermittent problems.P-201: Inspecting Electrical Connectors
Many of the Operational Procedures and Diagnostic Code Procedures in this troubleshooting guide will direct you to check a specific electrical connector. Use the following steps to help determine if the connector is the cause of the problem. If a problem is found in the electrical connector, repair the connector and continue the test procedure.1. Check connector lock ring.Make sure the connector was locked correctly and the lock ring is capable of locking the connector together.2. Perform 10 pound pull test on each pin/wire.Each pin and connector should easily withstand 10 pounds of pull and remain in the connector body. This test checks whether the wire was correctly crimped in the pin and whether the pin was correctly inserted into the connector. Repair as needed.Any time a wire is removed from a connector for testing purposes, repeat the 10 pound pull test on the wire after re-inserting it into the connector, to be sure it was properly installed. Pins should ALWAYS be crimped onto the wires; NEVER soldered. Use 1U5804 Crimping Tool (part of 4C3406 Connector Repair Kit).3. Visually inspect wiring.Look for worn or abraded wires. Check for pinched or damaged harnesses.4. Visually inspect connectors.Verify that pins and sockets are not corroded or damaged. Verify correct alignment and location of pins in the connector.5. Check individual pin, socket and connections.This is especially important for intermittent problems. Using a new pin, insert the pin into each socket one at a time to check for a good grip on the pin by the socket. Repeat for each pin on the mating side of the connector, using a new socket for the test.P-210: Electrical Power Supply Test
The Electronic Control Module (ECM) of the 3176 System, receives electrical power (battery voltage) through wiring supplied by the vehicle manufacturer. In typical applications, the 3176 System receives power whenever the key is turned on.Some vehicles may be equipped with an engine protection shutdown system (such as a Kysor or Vigil shutdown system). An idle time shutdown system (external to the 3176 System) may also be used. These devices interrupt electrical power to the ECM, to shut the engine down. Some of these devices will not supply power to the ECM until the engine is cranked, until oil pressure comes up to acceptable limits, or until an override button is pressed. Keep in mind that these devices may be the cause of loss of (or intermittent) power to the ECM.This procedure tests whether correct voltage is being supplied by the vehicle wiring. Detailed tests to identify specific failures in the vehicle wiring are the responsibility of the vehicle manufacturer.Note that the ECAP or DDT is supplied with electrical power through connections in the 3176 Engine Wiring Harness.