Electrical System and Electrical Engine Controls
ENGINE CONTROL UNIT (ECU)
IMPORTANT: DO NOT OPEN ENGINE CONTROL
The Engine Control Unit is not repairable. If it is found to
be defective, replace it as a unit.
programmed identically with the original
diagnostic messages, poor
Engine Control Unit (ECU) - Bosch shown
performance, or engine damage can
The wiring connector for the Engine Control Unit is
repairable. For later Deere ECUs, see REPLACE (Pull
Type) METRI-PACKTM CONNECTORS later in this group.
For earlier Bosch ECU's, refer to CTM68, Electronic Fuel
METRI-PACK is a trademark of Packard Electric.
TRANSIENT VOLTAGE PROTECTION (TVP)
The TVP module is not repairable. If the TVP module is
defective, the unit must be replaced. The connector on the
TVP module wiring harness is repairable. Refer to
REPLACE WEATHER PACKTM CONNECTOR later in this
Transient Voltage Protection (TVP module)
WEATHER PACK is a trademark of Packard Electric