Clark Forklift Fault Codes ECX/EPX

Fault

Code

Fault Name

Fault Description

Control

Troublabootiug

1

"NO SEAT
SWITCH"

No input from seat
switch

TRACTION

• Controller detects the seat switch is
open during operation.
• Check seat switch wiring and connec
tions
• Check for inoperative seat switch.

8

"WATCH-
DOG"

Watchdog circuit
has been triggered

TRACTION

• It is a self-diagnosing test

13

"EEPROM
KO"

Warning: EEprom
fault controller
will use default
parameters

TRACTION

• Fault in the area of memory in which the
adjustment parameters are stored;
• This fault does not inhibit truck opera
tion, but the controller will use default
parameters.
• If fault persists when key is switched
OFF and ON again.
• If the fault disappears, remember that
the parameters stored previously have
been cancelled and replaced by the
default values.

17

"LOGIC
FAILURE#3

Failure in overload
protection hard-
ware circuit

TRACTION

• Fault in the hardware section of the
logic board that manages the hardware
current protection.

18

"LOGIC
FAILURE#2

Failure in U,V,W
voltage feedback
circuit

TRACTION

• Fault in the hardware section of the
logic board that manages the phase 's
voltage feedback.

19

"LOGIC
FAILURE#1

An over voltage or
under voltage con-
dition has been
detected

TRACTION

• This fault signals that the under voltage 1
over voltage protection interrupt has
been triggered
• A real under voltage 1over voltage key
input (TB l) happened. Voltage has been
below 16V
• A real over voltage on the power capaci
tors happened, voltage has been 63V.
• Fault in the hardware section of the
logic board that manages the over volt-
age protection.
• Possible plugging in or unplugging of
battery or charger with the key switch
on.

30

"VMN
LOW"

Wrong voltage on
motor power out
puts; failure in the
power section or
in the mosfet
driver circuit or in
the motor

TRACTION

• This test is carried out during initial
diagnosis and in standby. Possible
causes
• A real under voltage over voltage situa
tion occurred.
• problem with motor connections or the
motor power circuit; check if the 3
phases are correctly connected; check if
there's chassis ground of the motor to
truck frame.
• A problem with motor connection or
power circuit.
• Check if all 3 phases are correctly con
nected.
• Check for short between motor terminal
and chassis
• Perform diode test
• unhook battery at controller and do a
diode check between Batt + and Batt -
(should read .3 to .5 volts)
• Diode test
-Disconnect all power and motor leads
from control.
- Select diode test on your multi meter.
-Place positive meter lead on control -
Battery terminal place negative meter
lead on terminals U,V,W meter should
read .3V to .5V if not replace control.
-Place negative meter lead on control +
Battery terminal place negative meter
lead on terminals U,V,W meter should
read .3V to .5V if not replace control.
- If code presist replace control
• Fault in the inverter power section

Replace con
troller

31

"VMN
HIGH"

Wrong voltage on
motor power out
puts; failure in the
power section or
in the mosfet
driver circuit or in
the motor

TRACTION

• This test is carried out during initial
diagnosis and in standby. Possible
causes:
• Problem with motor connections or the
motor power circuit; check if the 3
phases are correctly connected; check if
there's chassis ground of the motor to
truck frame.
• Unhook battery at controller and do a
diode check between Batt + and Batt -
(should read .3 to .5 volts)
• Possible high batteryto the case of the
battery
• Fau1t in the controller power section.
• Possible bad battery, Excessive voltage
to case of battery.

Replace controller

36

"INPUT
ERROR #l"

Warning : Seat
switch is Open
during running

TRACTION

• The seat switch is open with over speed
of the " Park Speed Limit " setting.

37

"CONTAC
TOR
CLOSED"

Line contactor
power contact
closed at power up

TRACTION

• Before driving the line contactor coil,
the controller checks if the line contactor is stuck. The controller drives the
bridge for a while, trying to discharge
the capacitor bank. If they don't dis
charge, the fau1t condition is entered. It
is suggested to check the contactor con
tact, see if it is mechanically stuck.

38

"CONTAC-
TOR OPEN"

Line contactor
power contact
does not pull in

TRACTION

• The controller has driven the line contactor, but the contactor did not close.
• The wires to the coil are open or a loose
connection.
• Open fuse or cut cable.
• The contact does not pu11 in properly
• Check contactor set voltage.

53

"STBY
HIGH"
1

Wrong voltage in
current sensor
feedback circuit

TRACTION

• The microprocessors verify if the feed
back of current sensor device output is
within the zero current window. Possible causes of the fau1t.
• Current sensor failure.
• Failure in the controller: If the fau1t per
sists, replace the power unit.

60

"CAPACI
TOR
CHARGE"

Power Capacitor
Voltage does not
increase when the
key is turned ON;
failure in power
section, or in
Logic PCB, or in
driver PCB, or in
the motor TRAC
TION

• Wben key is switched on, the controller
tries to charge the capacitors through a
power resistor, and check if the capaci
tor is charged (112 battery volts) within a
timeout. Ifthey do not charge, an fault is
signaled; the line contactor does not
elose.
• The charging resistor is open
• The charging circuit has a failure
• There is a problem in the power section.
• Possible Motor connection open.

61

TRACTION

• Temperature of control is greater than
75°C. Maximum current reduced pro
portionally to the temperature increase.
At 1oooc the maximum current of both
controls is reduced to zero.

65

"MOTOR
TCSTART"
Warning: Right or
left or both
motors tempera
ture high (over adj
#4)

TRACTION

• Drive motors analog temperature sensor
is greater than the temperature set in
ADJUSTMENT #4 (130°C) in the
Replace con-
• If it happens when the motor is cold, check the wring. If all is ok,

Check temperature

Shown on handse in

tester mode. Replace controller

66

"BATTERY
LOW"
Warning: Battery
charge leve! below
10%

TRACTION

• When battery leve! reaches 10% or less
or (10% on the dash display), the current
leve! for the drive motors is reduced to
50% of the prograrnmed leve! and the
lift function is locked out.

71

"MOTOR
SHUT
DOWN"
Warning: Motors
temp. are very
high (over
MOTORSHUT
DOWN pararn.)

TRACTION

• This fault occurs when the motor temper
ature switches are open (digital sensor),
or if the analog sensor temperature over
takes the cut off leve!.
• The cut off leve! is adjusted with the
MOTOR SHUTDOWN parameter
(145°C) in the ADJUSTMENT submenu.
• If this fault occurs, maximum current is
reduced to zero and the motor is stopped.
Replace con-
• If the shutdown occurs when the motor is
cold check the wiring. If wiring is ok

Replace controller

72

"MOTOR
LOCKED"
Drive motor
locked up

TRACTION

• After 15 seconds the motor stalled with
maximum current, controller reduces
maximum current to 50%.
• Check if Line Contactor is pulled in.
• Possible bad encoder bearing

74

"DRIVER
SHORTED"

Line contactarcoil
driver is shorted

TRACTION

• When the key is turned ON, the micro
processor checks that the line contactar
coil driver is not shorted
• If it is, this fault is signaled.
• Check if there is an external short or low
impedance pull-down between NLC
(I'B8) and -Batt.
• If no extemal causes can be found.

Replace con
troller

75

"CONTAC-
TOR
DRIVER"

Line contactar coil
driver is open (not
able to drive the
coil to the correct
voltage)

TRACTION

• When the initial diagnosis is fmished,
the traction logic closes the line contac
tor and checks the voltage drain of the
driver.
• If this is not low, the driver is unable to
close and the fault is signaled.

Replace con
troller

76

"COIL
SHORTED"

Init: Line contac-
tor coil driver pro-
tection circuit is
damaged or Stby
or running: short
on line contactar
TRACTION

• When the key is tumed on, the micro
processor checks that the line contactar
coil driver short circuit protection hard
ware If it does not react in a correct way
to the microprocessor stimulus, the fault
is signaled.
• When the fault occurs while the line
contactar is closed this, indicates a short
circuit across the line contactar coil.
check if there is an extemal short circuit
and if the ohmic value (xxx Omhs) of
the line contactar coil is correct

Replace contac
tor coil

77

"MAINTE-
NANCE
HOURS"

Displayed when
the normal hour
meter exceeds the
maintenance
hours set for the
vehiele

TRACTION

• This is just an indication that the vehicle
is due for its Periodic Maintenance.

78

"VACC Not
OK"

Warning: Accel
erator signal
(CPOT) voltage
higher than
VACCMIN+lV
While the trae
tion enable
switch is open

TRACTION

• This fault indicates that the accelerator
voltage is 1volt greater than the mini
mum value prograrnmed by PROGRAM
VACC function.
• The potentiometer is not correctly cali
brated.
• The potentiometer is defective.
• Use tester mode to check for voltage
change when accelerator is depressed,
should be approx 1.5volts (0.4-1.9volts
accelerator), 2.7volts (0.4-3.1volts
accelerator) of change. If not 1.5volts
(0.4-1.9volts accelerator), 2.7volts
(0.4-3.1volts accelerator) check for wir
ing shorts, if no shorts, replace accelera
tor. If accelerator still doesn't change
and voltage is greater than 2.0volts
(0.4-1.9volts accelerator), 3.2volts
(0.4-3.1volts accelerator) replace con
troJ.

Replace accel
erator

79

"INCOR-
RECT
START
(SRO)"

Warning: Wrong
traction request
sequence
This fault indi
cates an incorrect
starting sequence

TRACTION

• IfSRO FUNCTION is active, every time
work is stopped the operator must put
the truck in neutral.
• If forward, reverse or seat switch is
active when key switch is turned on.
• If forward, reverse closed without seat
switch input.
• If the fault persist after checking the
wiring,

Replace con
troller

80

"FOR-

Warning: For
ward and reverse
inputs are both
active

TRACTION

• Processor is continuously checking for a
request for forward and reverse at the
same time.
• Defective wiring.
• Running micro switch failure.
• lncorrect operation.
• If defect persist

Replace con
troller

81

"TH
MOTOR
SENSOR
KO"

Warning:Motor
TractionTraction
temperature sensor
is out of range

TRACTION

• The range of the motor temperature ana
log sensor is always checked and a fault
is signaled if it's out of range
• When this fault occurs. The maximum
current is reduced to half and maximum
speed is reduced to 60 Hz.

82

"ENCODER
ERROR"

Motor speed sen-
sor (encoder) does
not work properly

TRACTION

• This fault indicates that the frequency
supplied the motor is greater tbat 20 Hz,
and the signal feedback from the
encoder has a jump higher than 20 Hz in
less than ten milliseconds. This condi
tion clearly shows a malfunctioning of
the encoder signal.
• Check encoder wiring; if no fault is
found in the wiring it is necessary to
replace the encoder.

86

"PEDAL
WIRE KO"

Fault in Accelera-
tor negative
(NPOT) Input cir
cuit.
This fault indi
cates that accelera
tor wiring (NPOT
or PPOT) wire is
open.

TRACTION

• Check accelerator wiring and connec-
tions for opens
• Check accelerator input voltage using
PcConsole handset in tester mode (volt
age should range from 2.0 VDC to
approx. 0.30 VDC).
• Check voltage between NPOT (pin A3)
Battery Neg. (pin E2) voltage should be
greater than 0.30 VDC. This voltage
should remain constant all the way
through the pedal stroke.
• Check if controller input NPOT (A3) is
good. Remove pins (Al, A2, A3) from
connector, now connect a 4.7K ohm
resistor between PPOT (A2) and NPOT
(A3) now plug the connector back in,
this will polarize NPOT. Now check
voltage between (E2) -Batt and (A3)
NPOT the reading should be approx.
0.6VDC

Repair wiring as
required
Ifaccelerator
voltage is greater
than 2.0 VDC or
less than 0.30
VDC replace
accelerator
Ifvoltage is not
greater than 0.3
VDC proceed to
the next step
Ifit sill read O
VDC the con
troller has a
failed input
Ifit reads cor
rectly 0.6 VDC
the problem is in
the accelerator
or the hamess

150

"WATCH
DOG"

Watchdog circuit
has been triggered

PUMP

• It is a self-diagnosing test

155

"EEPROM
KO"

Warning:
Eeprom fault
controller will
use default
parameters

PUMP

• Fault in the area of memory in which the
adjustrnent parameters are stored; this
fault does not inhibit truck operation,
but the controller will use default
parameters.
• If defect persists when key is switched
OFF and ON again, replace the logic
board. If the fault disappears, remember
that the parameters stored previously
have been cancelled and replaced by the
default values.

Fault
Code

FaultName

Fault Description

Control

Troubleshooting

Ac:tion
Required

159

"LOGIC
FAILURE#3

Failure in overload
protection hard
ware circuit

PUMP

• Fault in the hardware section of the con
troller that manages the hardware cur-
rent protection.

Replace con
troller

160

"LOGIC
FAILURE#2

Failure in U,V,W
voltage feedback
circuit

PUMP

• Fault in the hardware section of the con-
troller that manages the phase 's voltage
feedback.

Replace con
troller

161

"LOGIC
FAILURE#1

An over voltage or
under voltage con
dition has been
detected

PUMP

• This fault signals that the under voltage 1
over voltage protection interrupt has
been triggered. 1\vo possible reasons:
• A real under voltage 1over voltage situ
ation happened.
• Verify battery setting.
• Fault in the hardware section of the con
troller that manages the over voltage
protection. Replace logic Card.
• Possible plugging in or unplugging of
battery or charger with the key switch
on.

Replace con
troller

171

"MOTOR
SHUT-
DOWN"

Warning: Pump
motor temp. are
very high (over
MOTORSHUT
DOWN param.)

PUMP

• This fault occurs when the purnp motor
temperature switches are open (digital
sensor), or if the analog sensor tempera
ture overtakes the cut off leve!.
• The cut off leve! is adjusted with the
MOTOR SHUTDOWN parameter
(145°C) in the ADJUSTMENT sub
menu.
• If this fault occurs, maximurn current is
reduced to 130 amps needed for steer
ing.
• If the shutdown occurs when the motor
is cold check the wiring. If wiring is ok
replace logic board.

172

"VMN
LOW"

Wrong voltage on
motor power out
puts; failure in the
power section or
in the mosfet
driver circuit or in
the motorPUMP

PUMP

• This test is carried out during initial
diagnosis and in standby. possible
causes.
• A real under voltage 1over voltage situ
ation happened.
• Problem with motor connections or the
motor power circuit; check if the
3phases are correctly connected; check
if there's chassis ground of the motor to
truck frame.
• A problem with motor connection or
power circuit.
• Check if all 3 phases are correctly con
nected.
• Check for short between motor terminal
and chassis
• Perform diode test
• Unhook battery at controller and do a
diode check between Batt+ and Batt
(should read .3 to .5volts)
• Unhook motor cables from controller
and do diode test between Batt+ and all
three phases, U,V,W. Check between
Batt- and all three phases, U,V,W
(should read .3 to .5volts)
• Diode test
- Disconnect all power and motor leads
from control.
- Select diode test on your multi meter.
- Place positive meter lead on control -
Battery terminal place negative meter
lead on terminals U,V,W meter should
read .3V to .5V if not replace control.
- Place negative meter lead on control +
Battery terminal place negative meter
lead on terminals U,V,W meter should
read .3V to .5V if not replace control.
- If code presist replace contro
• Fault in the inverter power section. Fault
in the hardware section of the controller
that manages the over voltage protec
tion.

Replace con-
troller

173

"VMN
HIGH"

Wrong voltage on
motor power out
puts; failure in the
power section or
in the mosfet
driver circuit or in
the motor

PUMP

• This test is carried out during initial
diagnosis and in standby. Possible
causes:
• Problem with motor connections or the
motor power circuit; check if the 3
phases are correctly connected; check if
there's chassis ground of the motor to
truck frame.
• unhook battery at controller and do a
diode check between Batt + and Batt -
(should read .3 to .5 volts)
• Possible high battery voltage to the case
of the battery.
• Fault in the inverter power section.
• Possible bad battery, Excessive voltage
to case of battery.

Replace con
troller

174

"TH
MOTOR
SENSOR
KO"

Warning:Motor
Pump tempera
ture sensor is out
ofrange

PUMP

• The range of the motor temperature ana
log sensor is always checked and a fault
is signaled if it's out of range
• When this fault occurs. The maximum
current is reduced to half and maximum
speed is reduced to 60 Hz.

182

"MOTOR
LOCKED"

Pump motor
locked up

PUMP

• After 15 seconds of the motor being
stalled with maximum current, control
ler reduces maximum current to 50%.
• Check if pump contactar is pulled in
• Possible bad encoder bearing.
• Possible bad encoder (sensor bearing).

195

"STBYI
HIGH"

Wrong voltage in
current sensor
feedback circuit

PUMP

• The microprocessors verify if the feed
back of current sensor device output is
within the zero current window. Possi
ble causes of the fault;
• Current sensor failure.
• Failure in the logic card: first replace the
logic card; if the fault persist, replace the
power unit.

196

"THERMIC
SENSOR
KO"

Warning: Pump
tem perature sen
sor is our of
range

PUMP

• The range of the temperature sensor is
always checked and a warning is sig
naled if it is out of range. This fault will
reduce the maximum current output of
the controller to 50%.

201

"ENCODER
ERROR"

Motor speed sen-
sor (encoder) does
not work properly

PUMP

• This fault indicates that the frequency
supplied the motor is greater tbat 20 Hz,
and the signal feedback from the
encoder has a jump higher than 20 Hz in
less than ten milliseconds. This condi
tion clearly shows a malfunctioning of
the encoder signal. Check encoder wir-
ing; if no fau1t is found in the wiring.

Replace
encoder

202

"CAP
CHARGE"

Power Capacitor
Voltage does not
increase when the
key is turned ON;
failure in power
section, or in
Logic PCB, or in
driver PCB, or in
the motor

PUMP

• When key is switched on, the inverter
tries to charge the capacitors through a
power resistor, and check if the capaci
tor is charged (l/2 battery volts) within a
timeout. If they do not charge, a fault is
signaled; the line contactor does not
elose.
• The charging resistor is open
• The charging circuit has a failure
• There is a problem in the power section.
• Possible Motor connection open.

203

"HIGH
TEMPERA-
TURE"

Warning: Pump
Controller tem
perature higher
that 75 degrees e

PUMP

• Temperature of control is greater than
75°C. Maximum current reduced pro
portionally to the temperature increase.
At 100°C the maximum current of both
controls is reduced to zero.

204

"VACC NOT
OK"

Warning: Lift
Sensor siganal
(CPOT) voltage
higher than
VACCMIN+lV
While the trac
tion enable
switch is open

PUMP

• This fau1t indicates that the Lift Sensor
voltage is 1volt greater than the mini
muro value programmed by PROGRAM
VACC function.
• The potentiometer is not correctly cali
brated.
• The potentiometer is defective.
• Tilt or sideshift switch activated at star
tup.

Reset VACC
Replace VACC

205

"INCOR
RECT
START"

Warning: Wrong
Hydraulic
request sequence
PUMP

PUMP

• This fau1t indicates an incorrect starting
sequence.
• Lift, Tilt, AUX1, AUX2 or enable
switch failure
• Error in sequence made by operator.
• Incorrect wiring.
• If the fault persist after checking the
wiring,
• Pot partially activated at startup

Replace con
troller

206

"PEDAL
WIRE KO"

Fault in Accelera-
tor negative
(NPOT) Input cir
cuit.

PUMP

• Check accelerator wiring and connec
tions for opens
• Check accelerator input voltage using
PcConsole handset in tester mode (volt
age should range from xx VDC to
approx. x:x VDC).

207

"MOTOR
TCSTART"

Warning: Pump
motors tempera
ture high

PUMP

• Pump motor analog temperature sensor
is greater than the temperature set in
ADJUSTMENT #4 (130°C) in the
ADJUSTMET submenu.
• When this fault occurs, current goes
down to IMX PROTECTION value and
motor rpm begins to decrease. Motor
current and speed decrease linearly as
the temperature increases until
MOTORSHUTDOWN is reached.
• If it happens when the motor is cold,
check the wring. If all is ole,,

Check tempera
ture shown on
handset in tester
mode
Replace con-
troller

208

"BATTERY
LOW "

Warning: Battery
charge level
below 10%

PUMP

• When battery level reaches 10% or less,
the current level for the drive motors is
reduced to 50% ofthe prograrnmed leve)

209

"DRIVER
SHORTED"

Line contactor coil
driver is shorted

PUMP

• When the key is turned on, the micro
processor checks that the line contactor
coil driver is not shorted; If it is, this
fault is signaled. Check if there is an
externa} short or low impedance pull
down between NLC (TB8) and Batt- If
no externa}causes can be found.

Replace con
troller

210

"CONTAC-
TOR
DRIVER''

Line contactor coil
driver is open (not
able to drive the
coil to the correct
voltage)

PUMP

• When the initial diagnosis is finished,
the controller closes the line contactor
and checks the voltage drain of the
driver. If this is not low, the driver is
unable to elose and the fault is signaled.

Replace con
troller

211

"COIL
SHORTED"

Init: Line contac-
tor and EB coil
driver protection
circuit is damaged
or Stby or running:
short on line con
tactor or EB coil

PUMP

• When the key is turned on, the micro
processor checks that the line contactor
coil driver short circuit protection hard
ware If it does not react in a correct way
to the micro processor stimulus, the fault
is signaled. When the fault that occurs
while the line contactor is closed this
indicates a short circuit across the line
contactor coil. check if there is an exter
na} short circuit and if the ohrnic value
(xxx Ornhs) of the line contactor coil is
correct

212

"COIL
INTER
UPTED"

Brake coil open

PUMP

• Check for open wiring to the brake coil.

Repair wiring

217

"WRONG
SET BAT-
TERY"

Battery voltage
does not corre-
spond to pro-
gramrned "SET
BATTERY"

PUMP

• Tbis fault indicates tbat actual battery
voltage is 20% bigber or 20% lower than
"SET BATTERY" parameter setting.
Replace battery with correct battery.

218

"SAFETY"

Input B5 is not
connected to Batt-

PUMP

• Check that the jumper is in place
between B5 and B11. See wiring día
gram.

222

''NO CAN
MSG"

Pump has lost Can
communication
with Traction

PUMP

• This Fault is present in combi Systems
(traction + Pump). The traction has
detected a fault and has informed the
pump controller through the can-bus
Jine. The pump is waiting for the trae
tion ok. The fault must be looked for in
the traction controller or can-bus circuit.

223

''WAITING
FOR TRAC"

Pump is waiting
for cummunica-
tion from the trae-
tion

PUMP

• This alarm is present in combi Systems
(traction + Pump). The traction has
detected a faulure has informed the
pump inverter through the can-bus Jine.
The pump is waiting for the traction ok.
The faulure must be looked for in the
traction inverter.

225

"SEATKO"

Seat input read by
traction is differ-
ent than seat input
read by pump

PUMP

• Check seat switch wiring at TB4 and
PB4
• May be problem with CAN BUS com
munications.

225

"AUX OUT-
PUTKO"

EB coil driver
shorted or open

PUMP

• The rnicroprocessor checks the driver of
the electromechanical brake coil. If the
status of the driver output does not cor
respond to the signal coming from the
rnicroprocessor, the fault is signaled.

243

"NO CAN
MSG5"

Traction has lost
Can communica-
tion with Pump

TRACTION

• Traction (node #2) signals that it has lost
communication with the Pump (node
#5) Tbis fault could be deterrnined to be
a problem in the truck CAN-BUS Jine or
be an intemal problem in the controller
logic card. First check the CAN_BUS
connections.

244

"SAFETY
KO"

Alarm: Pump
safety input is
open

TRACTION

• Check wiring pin B5 is connected to pin
B11 on the pump control.
• No jumper for pin B5 to pin B11 on the
traction control.

245

"WRONG
SET BAT-
TERY"

Battery voltage
does not corre
spond to pro
grammed "SET
BATTERY"

TRACTION

• This fault indicates that actual battery
voltage is 20% higher or 20% lower than
"SET BATTERY" parameter setting.
Replace battery with correct battery.

246

"SAFETY"

Alarm: Pump
safety input is
open

TRACTION

• Check jumper pin B5 to pin B11 on the
pump.
• No jumper for pin B5 to pin B11 on the
traction control.

249

"THERMIC
SENSOR
KO"

Warning: Trae
tion temperature
sensor is our of
range

TRACTION

• The range of the temperature sensor is
always checked and a warning is sig
naled if it is out of range. This fault will
reduce the maximum current output of
the controller to 50%.

251

"WAITING
FORNODE"

Traction is wait
ing for communi
cation from the
pump

TRACTION

• This alarm is present in combi systems
(traction + pump). The traction has
detected a failure has informed the
pump inverter through the can-bus line.
The pump is waiting for the traction ok.
The failure must be looked for in the
traction inverter.

253

"AUX OUT-
PUTKO"

EB coi! driver
shorted or open

TRACTION

• The microprocessor checks the driver of
the electromechanical brake coil. If the
status of the driver output does not cor
respond to the signa! coming from the
microprocessor, the fault is signaled. It
is suggested to check for an externa!
short or a low impedance pull-down
between NAUX (C31) and -Batt.
• If no externa}cause is found

Replace con-
troller

255

"HAND-
BRAKE"

Handbrake switch
closed

TRACTION

• lndicate that handbrake is activated
• Check wiring and handbrake switch.

Repair wiring
orreplace
switch if
needed

Blank

"DASH DIS-
PLAY"

Dash Display
blank

TRACTION

• Check 5 volt power supply for dash dis-
play If no 5 volts
• Check wiring and connector at control
and display. If not wiring or connec-
tions

Replace 5 V
power supply
Replace dash
display