Retrieving and Clearing DTCs on the Lincoln Mark VIII(8)

Using a Rotunda Super Star II Tester


ATTENTION

BEFORE TRYING TO RETRIEVE ANY CODES IN THE SYSTEM, YOU MAY WANT TO HAVE THE BATTERY & CHARGING SYSTEM CHECKED. A WEAK BATTERY WILL CAUSE ALL SORTS OF PROBLEMS IN THE AIR SUSPENSION. AUTOZONE AND A FEW OTHER AUTO PARTS STORES WILL USUALLY DO THIS FOR FREE.


Function Test Procedure

#1) Open hood and locate diagnostic connector on front of RH front shock tower. (this connector is on the pass. side strut tower and may have a black cap reading "SUSP/EVO")

#2) Install battery charger to provide power during testing.

NOTE:

If you have a bad battery (weak cell), you may still experience problems during this test even though you have the battery charger on the vehicle.


#3) Open luggage compartment and ensure air suspension switch is OFF.


#4) Set Super Star II Tester mode switch to FAST and set selector switch to EEC/MCU.

#5) Turn Scan Tool power switch on.

#6) Set HOLD/TEST push button in HOLD position (Button is up)


#7) Turn ignition switch to OFF, then ON.

#8) Ensure both doors on vehicle are closed. (the system most likely will not do ANYTHING while the doors are open)


#9) Install Super Star II Tester in diagnostic connector

#10) Press HOLD/TEST button and latch in TEST position (button is down)
Codes for function tests will be displayed one after the other.


When the desired test code number appears, release and depress the HOLD/TEST button.

This is an excellent way to test independant parts of the system and/or perform wiggle tests(this is to power up a part, then "wiggle" the connector in order to find a loose connection and/or bad wire).

It is also the easiest way to test a sensor, by listening for the beap. The closer the beeps are to each other, the closer to trim height you will be. if you don't hear a beep, or you heard a beep, then it quits, you know you have a bad sensor.

I RECOMMEND PULLING THE CODES (211) OUT OF THE SUSPENSION MODULE MEMORY FIRST BEOFRE PERFORMING ANY TESTS!

211=DISPLAY CODE(S) IN MEMORY

212=LF PUMP WITH AUDIBLE SENSOR CHECK

213=LF VENT WITH AUDIBLE SENSOR CHECK

214=RF PUMP WITH AUDIBLE SENSOR CHECK

215=RF VENT WITH AUDIBLE SENSOR CHECK

216=LR PUMP WITH AUDIBLE SENSOR CHECK

217=LR VENT WITH AUDIBLE SENSOR CHECK

218=RR PUMP WITH AUDIBLE SENSOR CHECK

219=RR VENT WITH AUDIBLE SENSOR CHECK

221=COMPRESSOR RUN

222=ACTUATOR(EVO) OUTPUT TEST (toggles all solenoids & actuator)

223=LF HEIGHT SENSOR TRIM DETECTION CHECK (Audible sound)

224=RF HEIGHT SENSOR TRIM DETECTION CHECK (Audible sound)

225=REAR SENSOR TRIM DETECTION CHECK (Audible sound)

226=SPEED SENSOR DETECTION

227=PULSE EVO ACTUATOR

228=ERASE ALL TROUBLE CODES IN MEMORY

 

Unlatch HOLD/TEST button to end selected test and to continue scrolling through the other codes. Relatch button to re-enter code display function.


SUSPENSION CODES AND POSSIBLE CAUSES

 

15=NO FAULTS STORED IN MEMORY = Some problems won't set a code

18=MODULE DETECTS LOW BATTERY = Bad battery and/or malfunctioning voltage regulator

19=MODULE DETECTS HIGH BATTERY = Malfunctioning voltage regulator and/or bad battery

20 = MODULE MEMORY ERROR = Maybe a bad module

25=HEIGHT SENSOR POWER NOT 5 VOLTS = Maybe a bad sensor or in the wiring

35=EVO ACTUATOR = EVO actuator disconnected, bad(rare) or in the wiring

45=STEERING SENSOR = Sensor disconnected or bad(rare) or in the wiring

50=LF HEIGHT SENSOR OUT OF RANGE = Maybe a bad sensor or in the wiring

55=RF HEIGHT SENSOR OUT OF RANGE = Maybe a bad sensor or in the wiring

60=REAR HEIGHT SENSOR OUT OF RANGE = Maybe a bad sensor or in the wiring

70=VENT SOLENOID=Maybe a bad compressor vent solenoid or in the wiring

75=COMPRESSOR RELAY CONTROL CIRCUIT = Maybe bad relay or in the wiring

80=LF SOLENOID CIRCUIT = Maybe a bad solenoid or in the wiring

85=RF SOLENOID CIRCUIT = Maybe a bad solenoid or in the wiring

90=LR SOLENOID CIRCUIT = Maybe a bad solenoid or in the wiring

95=RR SOLENOID CIRCUIT = Maybe a bad solenoid or in the wiring

98=COMPRESSOR RUN TIME EXCEEDED = Exceeded 90 second time-out

99=UNABLE TO DETECT RAISING OR LOWERIN = Clogged dryer or bad vent solenoid

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