Zanussi ZF 54 SA- User Manual

FreedomLine

®

Transmission

WARNING

To prevent serious eye injury, always wear safe eye
protection when you perform vehicle maintenance or
service.

When you work on an electrical system, the possibility of
electrical shock exists, and sparks can ignite flammable
substances. You must always disconnect the battery
ground cable before you work on an electrical system to
prevent serious personal injury and damage to
components.

For Complete Maintenance and
Diagnostics Information on the
FreedomLine

®

Transmission

Refer to ZF Maintenance and Diagnostics Manual
MM-0150, FreedomLine

®

Transmission, for complete

maintenance and diagnostics information.
To order this publication, contact the OnTrac Service
Center at 866-668-7221, or visit the Tech Library at
meritorhvs.com.

Before You Make a Warranty Repair on
a FreedomLine

®

Transmission

Call OnTrac Customer Service Center at 866-668-7221 for
approval. You’ll be asked to provide the transmission’s
model number, mileage, in-service date, serial number,
VIN number and the reason for the repair.

Fault Codes and Volt-Ohm Meter (VOM)
Diagnostics

ZF FreedomLine

®

transmission control unit (TCU) uses a

series of fault codes to identify system malfunctions that
the TCU detects and stores into memory.

After you retrieve a fault code from the instrument panel
display and identify the fault, use a volt-ohm meter
(VOM) to test the area where the fault code indicates
that the malfunction has occurred. An authorized
distributor/dealer should repair the fault.

How to Retrieve Active and Inactive
Fault Codes from the Instrument Panel
Display

NOTE:

The vehicle must be stationary to retrieve active

fault codes.

1.

Park the vehicle and set the parking brake. Turn the
engine OFF, but leave the ignition ON. Prepare to
record the fault codes before you begin to retrieve
them from the instrument panel display.

2.

Use the following procedures to retrieve active and
inactive fault codes.

Active Fault Codes

NOTE:

All active fault codes will steadily display for

approximately 1-1/2 seconds each.

Ignore fault codes

that flash

. When the TCU has listed all active fault

codes, the list will repeat.

1.

Press and hold the NEUTRAL button and FUNCTION
button at the same time. The TCU will begin to list
the active fault codes on the instrument panel
display.

2.

Record the fault codes.

3.

When you’re finished retrieving fault codes, release
the NEUTRAL and FUNCTION buttons. Turn the
ignition OFF.

Inactive Fault Codes

NOTE:

All inactive fault codes will steadily display for

approximately 1-1/2 seconds each.

Ignore fault codes

that flash

. When the TCU has listed all inactive fault

codes, the list will repeat.

1.

Press and hold the NEUTRAL button, FUNCTION
button and service brake at the same time. The TCU
will begin to list the inactive fault codes on the
instrument panel display.

2.

Record the fault codes.

3.

When you’re finished retrieving fault codes, release
the NEUTRAL and FUNCTION buttons, and the
service brake. Turn the ignition OFF.

To View Active or Inactive Fault Codes
Again

Repeat the previous steps.

How to Clear Inactive Fault Codes from
TCU Memory

NOTE:

Inactive faults are repaired active faults that

have not been cleared from TCU memory.

1.

The vehicle must be stationary to clear inactive fault
codes. Park the vehicle and set the parking brake.
Turn the engine OFF. Turn the ignition OFF.

2.

Press and hold the NEUTRAL button and the
FUNCTION button at the same time.

3.

Turn the ignition ON.

Do not start the engine

. Count

to three and release both buttons.

4.

Count to three and press and hold the NEUTRAL
button and the FUNCTION button at the same time.

5.

Turn the ignition OFF. Count to three and release
both buttons. The fault codes will be cleared from
TCU memory.