Last updated: April 4, 2000
Date: Wed, 25 Nov 1998 02:48:14 -0800
From: Stephen Stanley (firstname.lastname@example.org)
The following information is taken from the European Workshop Manual
Supplement, dated 7/94, as a result it may not apply to all FD's out there,
but may be worth a try. It is certainly going to be safer that Dana's
recommended oil slick technique - furthermore, you won't get the EPA
complaining about the pollution you cause when the oil slick runs off into
- Make sure that the ABS memory error codes have been cleared from memory
[connect TBS to GND in the diagnostic connector, turn ignition on (don't
start engine), press the brake pedal 10 times at intervals of less than 1
second. If successful, the ABS warning light will come on for 3 seconds,
then go out] Remove jumper wire and turn igntion off.
- Make sure your battery is fullly charged, when you turn the ignition on,
the ABS light should come on for 2-4 seconds, then go out.
- Assuming the above succeeds.... and the manual only worries if the light
- Jack up the car and support it on safety stands. Ensure the car is in
neutral (or N if an auto)
- Release the parking brake
- Rotate each wheel by hand and inspect for brake drag (not sure the of
relevance of that step)
- Connect a jumper wire between TBS and GND in the daignostics connector
- With ignition off, get an assistant to press the brake pedal and ensure
the right front wheel stops
- With the brake pedal still depressed, turn the ignition switch on and
verify that the brake is released momentarily (approx 0.5 secs) and that the
wheel turns when pressure-reduction operates.
- Check remaining wheel in the following order: Left Front, Right Rear,
- If steps 9 and 10 show correct operation, then the following systems are
- - Brake piping to ABS hydraulic unit
- - braking system including ABS hydraulic unit
- - electrical system in ABS hydraulic unit (solenoid, ABS motor etc)
- - ABS control module, its output system (solenoid, relay etc) and harness
The following items are not tested using the above procedure:
- - Input system and harness of ABS control module
- - Intermittent failure
- - fluid leakage
Hope this helps
I particularly like step 12:
- replace the ABS hydraulic unit if necessary
Date: Tue, 21 Mar 2000 13:33:50 -0800
From: "Ulen, Robert S" (Robert.Ulen@PSS.Boeing.com)
ABS ECU (Reference page P-46 of the Workshop Manual)
- With engine OFF, short "TBS" to "GND" terminals in the diagnostic plug
(located on LH engine bay wheel well near battery). There is a "map" of
the plug terminals located inside the plug lid.
- Turn the ignition switch ON, but do not start the engine.
- Read any stored trouble codes on the ABS Warning light. If no codes are
stored, the light will come on for approx. 2 seconds, then go out. If
code(s) are stored, the ABS Warning light will flash as follows to
indicate code number. A Long flash represents the tens digit (10, 20,
30, etc.), and a short flash represents the ones digit (1 thru 9).
Example: Long, short, short flash represents code 12. If any trouble
codes are found, refer to page P-48 of the Workshop Manual for trouble
shooting details. The Check Engine light stays ON during the ABS trouble
- Cancel any stored trouble codes as follows:
With the "TBS" and "GND" terminals still shorted, and the ignition switch
still ON, press the brake pedal 10 times at a rate of more than once per
second. Ref. page P-47 of Workshop Manual.
Note: In the non-troubleshooting mode, if the ABS Warning light remains ON
or flashes (when car is stopped) 2 to 4 seconds after the ignition switch is
turned ON, there probably are stored codes in the ABS control unit due to a
malfunction. The ABS will not operate if codes are present. Ref. page P-53
of the Workshop Manual.