Eaton Transmission RWRG0078 Service Manual

RWRG0078 - Fault Code 63 Pre-Authorization | Fault Isolation Procedures TRTS0940

RWRG0078 - Fault Code 63 Pre-Authorization

Overview

The UltraShift PLUS transmission is equipped with an
X-Y Shifter that selects a transmission gear. The X-Y Shifter
motors are controlled with electrical current supplied by the
TECU to move the Shift Finger either side-to-side (rail
selection) or fore-and-aft (gear engagement and
disengagement). Fault Code 63 indicates a failure of the
circuit controlling the Gear Motor and the fore-and-aft
movement of the X-Y Shift Finger.

Note: it has been determined that performing an electrical
pre-test is not needed.

Symptom(s)

• “F” flashes in gear display.

• Service light flashes (if equipped).

• Engine may not crank.

• Transmission may not engage a gear from neutral.

• Transmission does not shift while the vehicle is
moving.

• Until the fault becomes Inactive, driver may have to
shut off engine with transmission in gear.

Warranty Coverage

This Warranty Repair Guideline repair DOES NOT apply if
the Fault Code is Inactive and there are other Active Faults
in the Eaton/OEM System. If there are other Active Faults,
please follow normal troubleshooting procedure using the
correct troubleshooting manual per transmission model.

This Pre-Authorization DOES NOT apply if the failed part
has been replaced within the last 90 days on the truck.

This Pre-Authorization DOES NOT apply if the failed compo­nent is mounted to a Medium Duty transmission.

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.

Possible Causes

FMI 1, 5

• Transmission Harness

• X-Y Shifter Gear Motor

137

© 2017 Eaton. All rights reserved

2017.05.8

Component Identification

1

7

2

6

3

5

4

Pre-Authorized Warranty Repair Guideline RWRG0078

1. X-Y Shifter

2. 2-Way Gear Motor Connector (blue)

3. 2-Way Gear Motor Connector Body (blue)

4. 4-Way Diagnostic Connector

5. 38-Way Transmission Harness Connector

6. 38-Way Vehicle Harness Connector

7. Transmission Electronic Control Unit (TECU)

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Pre-Authorized Warranty Repair Guideline RWRG0078

12

38 36

36
38

B
A

B
A

316

25
17
31

A
B
C

5

Signal

Communication

Relay/Solenoid Driver

Ground

Switched Ground

Battery Voltage

Ignition Voltage

Switched Battery from TECU

Switched 5V from TECU

1. Transmission Electronic Control Unit (TECU)

2. 38-Way Transmission Harness Connector

3. 2-Way Gear Motor Connector Body (blue)

4. 2-Way Gear Motor Connector (blue)

5. 4-Way Diagnostic Connector

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Pre-Authorized Warranty Repair Guideline RWRG0078

Fault Code 63 Troubleshooting

Purpose: Check for Active or Inactive fault

A

codes.

1. Record the transmission fault codes, FMIs,

occurrences, and timestamps from the Service
Activity Report created during the Diagnostic
Procedure. Determine Fault Code 63 FMI 1 or 5.

• If Fault Code 63 FMI 1 is active or inactive, go to
Step

B.

• If Fault Code 63 FMI 5 is active or inactive,

remove X-Y Shifter and inspect for coolant
contamination. If contamination is found, service
per RWRG0005.

• if no contamination, replace X-Y shifter and
Transmission Harness, go to Step

V.

Purpose: Verify repair.

V

1. Key off.

2. Reconnect all connectors and verify that all

components are properly installed.

3. Key on with engine off.

4. Clear fault codes using ServiceRanger.

5. Drive vehicle and attempt to reset the code or

duplicate the previous complaint.

6. Check for fault codes using ServiceRanger.

• If no fault codes set and vehicle operates

properly, test complete.

• If Fault Code 63 sets Active during the test drive,

return to transmission specific diagnostic
manual for extended trouble shooting.

• If a fault code other than 63 sets, troubleshoot

using appropriate troubleshooting manual.

Purpose: Verify if FMI 1 is set

B

Active/Inactive.

1. Determine Fault Code FMIs.

• If FMI 1 is inactive. Replace X-Y Shifter. If it is

Key on Active, proceed with Normal trouble­shooting methods found in appropriate manual.
Go to Step

V.

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Pre-Authorized Warranty Repair Guideline RWRG0078

Warranty Parts

• K-4223RX: X-Y Shifter

• P/N Varies: Transmission Harness

Warranty Labor

• Diagnostics - 0.3 hr

• Software Update if not current version - 0.5 hr

• SRT Transmission Harness R&R

• SRT X-Y Shifter R&R

• Road Test - 0.5 hr

Warranty Coding

• Part: A-7856

• Complaint: STUCK IN GEAR

• Failure: ROOT CAUSE NOT DETERMINED

Warranty Claim Filing

File pre-authorized warranty claim through appropriate OEM
or through Direct Pay.

• RWRG0078

• OEM Warranty Coverage

• Software Revision (from and to)

• XY Shifter and Transmission Harness Kit used

Parts Disposition

Return Parts per OEM or Direct Pay guidelines.

Warranty Disclaimer

If the failure is not the result of an accident, damage, negli­gence, abuse or misuse, improper installation or maintenance
or any other conditions described in the Limits and Exclusions
section of the Eaton Warranty Manual TCWY0600, then Eaton
will treat the condition as covered under its warranty. How­ever, this conclusion does not necessarily mean that a defect
in fact exists. In all cases, Eaton shall make the final determi­nation and interpretation as to the warrantability of the prod­uct.

Filing through Direct Pay

Click here for Direct Pay submission guidelines and claim
forms:

Submission Guidelines
and Claim Forms

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Pre-Authorized Warranty Repair Guideline RWRG0078

Page 142