TOOL GP- 1U6680 - Caterpillar

The Electronic Control Module (ECM) uses connectors that have 86 terminals to interface to the wiring harness.The Electronic Control Module (ECM) uses connectors that have 64 terminals to interface to the wiring harness.
Illustration 2 g01746473
Layout of the Connector Pins (view from the rear)
Removal and Installation of the Harness Connector Terminals
Terminal Removal
Table 1
Required Tools
Tool Part Number Part Description Qty
A 266-1683 Removal Tool 1
Illustration 3 g01784793
Removal of Terminal Position Assurance Components
Remove the connector from the ECM. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install".
Use a screwdriver that has a flat blade (1) to remove the two terminal position assurance components (2) from the connector (3). Note: Do not use Tooling (A) to remove the Terminal Position Assurance components.
Illustration 4 g01784822
Removal Tool
Insert the Tooling (A) into the hole that is adjacent to the terminal in order to release the locking device. Note: Make sure that the tool stays perpendicular to the face of the connector.
Hold the tool in position and gently pull the wire in order to remove the terminal from the rear of the connector (3).
Remove the Tooling (A) from the face of the connector (3). Note: If a terminal must be replaced, part number 267-9572 must be used.Terminal Insertion
Push the terminal into the rear of the connector (3) until the terminal engages with the locking device.
Gently pull on the wire in order to make sure that the terminal is retained by the locking device.
Install the two terminal position assurance components (2) into the sides of the connector (3).
Connect the connector to the ECM. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install". Injector Connectors
Connectors at the valve cover
Illustration 5 g03838886Sensor Connectors
Analog Sensor Connector (active)
Illustration 6 g01240891Analog Sensor Connector (passive)
Illustration 7 g01241538Connectors for the Termination Resistor
Illustration 8 g01355248Engine Speed/Timing Connector
Illustration 9 g01155187Ampseal Connector (typical)
Illustration 10 g02219254Deutsch Connectors (typical)
Illustration 11 g02220494