BODY 8J9370 - Caterpillar

Connectors for the Electronic Control Module (ECM)
Illustration 1 g03789268
Locations of the connectors on the engine ECM
(1) J2 ECM connector
(2) J1 ECM connector The Electronic Control Module (ECM) uses connectors that have 86 terminals to interface to the wiring harness.
Illustration 2 g03068976
Layout of the ECM connector pins
Illustration 3 g03069016
Layout of the harness connector pins
The pins on the harness connectors are not serviceable. If a pin or the connector is damaged, the harness must be replaced.Connectors on the Pump and Electronics Unit (PEU)
Illustration 4 g03789278
Locations of the connectors on the PEU
(3) Connector for the Dosing Control Unit (DCU)
(4) 31-pin interface connector Injector Connectors
Connectors at the valve cover
Illustration 5 g03789439Sensor 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