Eaton Transmission RWRG0069 Service Manual
Roadranger Warranty Repair Guideline RWRG0069
RWRG0069 - Fault Code 64 on Generation 1 Electronic Clutch Actuator (ECA)
Overview
The UltraShift PLUS transmission is equipped with an Electronic Clutch Actuator (ECA) that controls the position of the
clutch assembly. Power and ground to the ECA are OEM-supplied through a 3-Way Connector directly connected to the vehicle batteries. The ECA is connected to the Transmission
Electronic Control Unit (TECU) by an 8-Way Connector that is
part of the transmission harness. The ECA communicates with
the TECU over the High Integrity Link (HIL) to change position,
show faults or include other operation information.
Note: It has been determined that performing an electrical pretest is not needed.
Symptom(s)
• “F” flashes in gear display.
Service light flashes (if equipped).
•
• If the fault occurs at power up, engine
starts, bu
• If the fault occurs while driving, ECA maintains current
clutch position or moves to the last position commanded by the TECU. Transmission may continue
shift
t TECU will not engage a gear.
until vehicle is stopped.
cranks and
to
Warranty Coverage
• This Warranty Repair Guideline repair DOES NOT apply if a Generation (Gen) 2 ECA is installed on the truck
(see Step A and the Compon
entification.). If the truck is equipped with a Gen
Id
please follow normal troubleshooting pro
ECA
and
call 800-826-4357 for additional assistance.
• This Warranty Repair Guideline repair DOES NOT apply if the Generation (Gen) 1 ECA has been replaced
within the last 90 days on the
has been replaced within the last 90 days follow
mal troubleshooting procedure and call 800-826-4357
for additional assistance.
• The warranty coverage varies depending on vehicle
vocation and transmission model type. Warranty coverage is the same as that of its respective transmission
coverage including extended warranty.
ent ID for proper ECA
truck.
If the Gen 1 ECA
Possible Causes
FMI 12:
• ECA Power Harness
•ECA
2
cedure
nor-
FMI 7:
• ECA Power Harness
• Mechanical Clutch System
•ECA
Page 89
Roadranger Warranty Repair Guideline RWRG0069
4
1
7
6
5
7
6
2
3
• 1. 38-Way Vehicle Harness Connector
• 2. Transmission Electronic Control Unit (TECU)
• 3. ECA Shield
• 4. Electronic Clutch Actuator (ECA)
• 5. 8-Way ECA Connector
• 6. 3-Way ECA Power Supply Connector
Page 90
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