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