light DODGE NEON 1999 Service Service Manual

ply circuit shorts to ground, neither sensor will pro-
duce a signal (output voltage to the PCM).
When the ignition key is turned and left in the On
position, the PCM automatically energizes the Auto
Shutdown (ASD) relay. However, the controller de-en-
ergizes the relay within one second because it has
not received a camshaft position sensor signal indi-
cating engine rotation.
During cranking, the ASD relay will not energize
until the PCM receives a camshaft position sensor
signal. Secondly, the ASD relay remains energized
only if the controller senses a crankshaft position
sensor signal immediately after detecting the cam-
shaft position sensor signal.
(1) Check battery voltage. Voltage should approxi-
mately 12.66 volts or higher to perform failure to
start test.
(2) Disconnect the harness connector from the coil
pack (Fig. 20).
(3) Connect a test light to the B+ (battery voltage)
terminal of the coil electrical connector and ground.
The B+ wire for the DIS coil is the center terminal.
Do not spread the terminal with the test light
probe.
(4) Turn the ignition key to theON position.The
test light should flash On and then Off.Do not turn
the Key to off position, leave it in the On posi-
tion.
(a) If the test light flashes momentarily, the
PCM grounded the ASD relay. Proceed to step 5.
(b) If the test light did not flash, the ASD relay
did not energize. The cause is either the relay or
one of the relay circuits. Use the DRB scan tool to
test the ASD relay and circuits. Refer to the appro-
priate Powertrain Diagnostics Procedure Manual.
Refer to the wiring diagrams section for circuit
information.
(5) Crank the engine. (If the key was placed in the
off position after step 4, place the key in the On posi-tion before cranking. Wait for the test light to flash
once, then crank the engine.)
(6) If the test light momentarily flashes during
cranking, the PCM is not receiving a crankshaft posi-
tion sensor signal.
(7) If the test light did not flash during cranking,
unplug the crankshaft position sensor connector.
Turn the ignition key to the off position. Turn the
key to the On position, wait for the test light to
momentarily flash once, then crank the engine. If the
test light momentarily flashes, the crankshaft posi-
tion sensor is shorted and must be replaced. If the
light did not flash, the cause of the no-start is in
either the crankshaft position sensor/camshaft posi-
tion sensor 8 volt supply circuit, or the camshaft
position sensor output or ground circuits.
IGNITION TIMING PROCEDURE
The engines for this vehicle, use a fixed ignition
system. The PCM regulates ignition timing. Basic
ignition timing is not adjustable.
CAMSHAFT POSITION SENSOR AND CRANKSHAFT
POSITION SENSOR
The output voltage of a properly operating cam-
shaft position sensor or crankshaft position sensor
switches from high (5.0 volts) to low (0.3 volts). By
connecting an Moper Diagonostic System (MDS) and
engine analyzer to the vehicle, technicians can view
the square wave pattern.
ENGINE COOLANT TEMPERATURE SENSOR
Refer to Group 14, Fuel System for Diagnosis and
Testing.
INTAKE AIR TEMPERATURE SENSOR
Refer to Group 14, Fuel System, for Diagnosis and
Testing.
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
TEST
Refer to Group 14, Fuel System for Diagnosis and
Testing.
THROTTLE POSITION SENSOR
To perform a complete test of the this sensor and
its circuitry, refer to the DRB scan tool and appropri-
ate Powertrain Diagnostics Procedures manual. To
test the throttle position sensor only, refer to the fol-
lowing:
The Throttle Position Sensor (TPS) can be tested
with a digital voltmeter (DVM). The center terminal
of the sensor is the output terminal. One of the other
terminals is a 5 volt supply and the remaining ter-
minal is ground.
Fig. 20 Ignition Coil Engine Harness Connector
PLIGNITION SYSTEM 8D - 9
DIAGNOSIS AND TESTING (Continued)

Connect the DVM between the center and sensor
ground terminal. Refer to Group 8W - Wiring Dia-
grams for correct pinout.
With the ignition switch in the ON position, check
the output voltage at the center terminal wire of the
connector. Check the output voltage at idle and at
Wide-Open-Throttle (WOT). At idle, TPS output volt-
age should be approximately 0.38 volts to 1.2 volts.
At wide open throttle, TPS output voltage should be
approximately 3.1 volts to 4.4 volts. The output volt-
age should gradually increase as the throttle plate
moves slowly from idle to WOT.
Check for spread terminals at the sensor and PCM
connections before replacing the TPS.
SPARK PLUG CONDITION
NORMAL OPERATING CONDITIONS
The few deposits present will be probably light tan
or slightly gray in color with most grades of commer-
cial gasoline (Fig. 21). There will not be evidence of
electrode burning. Gap growth will not average more
than approximately 0.025 mm (.001 in) per 1600 km
(1000 miles) of operation for non platinum spark
plugs. Non-platnium spark plugs that have normal
wear can usually be cleaned, have the electrodes filed
and regapped, and then reinstalled.
CAUTION: Never attempt to file the electrodes or
use a wire brush for cleaning platinum spark plugs.
This would damage the platinum pads which would
shorten spark plug life.Some fuel refiners in several areas of the United
States have introduced a manganese additive (MMT)
for unleaded fuel. During combustion, fuel with MMT
may coat the entire tip of the spark plug with a rust
colored deposit. The rust color deposits can be misdi-
agnosed as being caused by coolant in the combustion
chamber. Spark plug performance is not affected by
MMT deposits.
COLD FOULING (CARBON FOULING)
Cold fouling is sometimes referred to as carbon
fouling because the deposits that cause cold fouling
are basically carbon (Fig. 21). A dry, black deposit on
one or two plugs in a set may be caused by sticking
valves or misfire conditions. Cold (carbon) fouling of
the entire set may be caused by a clogged air cleaner.
Cold fouling is normal after short operating peri-
ods. The spark plugs do not reach a high enough
operating temperature during short operating peri-
ods.Replace carbon fouled plugs with new
spark plugs.
FUEL FOULING
A spark plug that is coated with excessive wet fuel
is called fuel fouled. This condition is normally
observed during hard start periods.Clean fuel
fouled spark plugs with compressed air and
reinstall them in the engine.
OIL FOULING
A spark plug that is coated with excessive wet oil
is oil fouled. In older engines, wet fouling can be
caused by worn rings or excessive cylinder wear.
Break-in fouling of new engines may occur before
normal oil control is achieved.Replace oil fouled
spark plugs with new ones.
OIL OR ASH ENCRUSTED
If one or more plugs are oil or ash encrusted, eval-
uate the engine for the cause of oil entering the com-
bustion chambers (Fig. 22). Sometimes fuel additives
can cause ash encrustation on an entire set of spark
plugs.Ash encrusted spark plugs can be cleaned
and reused.
HIGH SPEED MISS
When replacing spark plugs because of a high
speed miss condition;wide open throttle opera-
tion should be avoided for approximately 80 km
(50 miles) after installation of new plugs.This
will allow deposit shifting in the combustion chamber
to take place gradually and avoid plug destroying
splash fouling shortly after the plug change.
Fig. 21 Normal Operation and Cold (Carbon) Fouling
8D - 10 IGNITION SYSTEMPL
DIAGNOSIS AND TESTING (Continued)

INSTRUMENT PANEL AND SYSTEMS
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
DOME LAMP............................ 1
ELECTRONIC DIGITAL CLOCK.............. 1
INSTRUMENT CLUSTER................... 2
WARNING AND INDICATOR LAMPS......... 2
DIAGNOSIS AND TESTING
AIRBAG WARNING SYSTEM............... 2
BRAKE SYSTEM WARNING LAMP TEST...... 2
FOG LAMP SWITCH TEST................. 2
FUEL TANK SENDING UNIT TEST........... 3
HEADLAMP SWITCH TEST................. 3
HEATER A/C BLOWER SWITCH TEST........ 3
HEATER BLOWER SWITCH TEST............ 3
INDIVIDUAL GAUGE INOPERATIVE.......... 4
INSTRUMENT PANEL AND COMPONENTS.... 4
LOW OIL PRESSURE WARNING LAMP TEST . . 4
MULTIPLE GAUGE INOPERATIVE TEST....... 4
SEAT BELT REMINDER SYSTEM TEST....... 6
SENDING UNIT......................... 6
SERVICE ENGINE SOON INDICATOR......... 6
VEHICLE SPEED SENSOR TEST............. 6
REMOVAL AND INSTALLATION
ASH RECEIVER RETAINER AND LAMP....... 6
CENTER BEZEL.......................... 6
CIGAR LIGHTER RECEPTACLE.............. 6
CLUSTER LAMP......................... 7
CLUSTER PRINTED CIRCUIT BOARD........ 7CLUSTER.............................. 7
DOME LENS/LAMP....................... 8
FLOOR CONSOLE........................ 8
GAUGE................................ 8
GLOVE BOX DOOR/BIN................... 8
GLOVE BOX SWITCH/LAMP................ 9
HEADLAMP SWITCH..................... 9
HEATER A/C CONTROL BLOWER SWITCH . . . 10
HEATER A/C CONTROL LAMP............ 10
HEATER A/C CONTROL................... 9
HEATER CONTROL BLOWER SWITCH....... 10
IGNITION KEY LAMP.................... 10
INSTRUMENT PANEL.................... 10
LEFT TRIM PANEL...................... 10
ODOMETER............................ 10
RADIO................................ 12
REAR WINDOW DEFOGGER AND/OR FOG
LAMP SWITCH....................... 12
RIGHT TRIM PANEL..................... 12
SHIFTER KNOB......................... 13
STEERING COLUMN COVER LINER......... 13
STEERING COLUMN COVER.............. 13
STEERING COLUMN SHROUDS............ 13
TOP COVER AND CLUSTER BEZEL
REMOVAL........................... 14
TRANSMISSION RANGE INDICATOR LAMP . . 14
TRUNK LAMP/LENS..................... 14
VEHICLE SPEED SENSOR................ 14
GENERAL INFORMATION
INTRODUCTION
The purpose of the dash gauges and indicator
lamps is to keep the driver informed about the oper-
ating condition of the vehicle. If an abnormal condi-
tion occurs, the driver is informed by indicator lamp.
The driver can seek service before damage occurs.
Indicator lamps use ON/OFF switch functions for
operation, while gauges use a sending unit or sensor.
DESCRIPTION AND OPERATION
DOME LAMP
The Dome Lamp operates when a door is open or
when the headlamp switch is placed in courtesy posi-
tion.
ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position.
PLINSTRUMENT PANEL AND SYSTEMS 8E - 1

When the ignition switch is in the OFF position, or
when the radio frequency is being displayed, time
keeping is accurately maintained.
The procedure for setting the clock varies slightly
with each radio. The correct procedure is described in
the individual radio operating instructions. Refer to
the Owner's Manual supplied with the vehicle.
INSTRUMENT CLUSTER
There are two conventional instrument cluster
assemblies available. The clusters electronically drive
the speedometer, odometer, and gauges (Fig. 1) and
(Fig. 2).
GAUGES
All gauges in the electronic clusters are the analog
type gauges. When the ignition switch is moved to
the OFF position, the cluster drives each gauge to its
lowest position.
WARNING AND INDICATOR LAMPS
The instrument cluster has warning lamps and
indicators for the following systems:
²Airbag
²Anti-lock Brakes (ABS) if equipped
²Brake warning
²Charging System
²Door Ajar
²High beam indicator
²Low oil pressure
²Malfunction indicator (service engine soon) lamp
²Right and left turn signals.
²Seat belt warning
DIAGNOSIS AND TESTING
AIRBAG WARNING SYSTEM
For testing of this system refer to Group 8M,
Restraint Systems.
BRAKE SYSTEM WARNING LAMP TEST
The brake warning lamp illuminates when the
parking brake is applied with ignition switch turned
to the ON position. The same lamp will also illumi-
nate if one of the two service brake systems fail the
when brake pedal is applied.
To test the system:
²As the ignition switch is turned to the start posi-
tion the lamp should light.
²Turn ignition switch to the ON position and
apply the parking brake. The lamp should light.
If lamp fails to light inspect for:
²A burned out lamp
²Loose, corroded or damaged socket
²A damaged circuit board
²A broken or disconnected wire at the switch
²Defective switch
To test the service brake warning system, refer to
Group 5, Brakes, Hydraulic System Control Valves.
FOG LAMP SWITCH TEST
(1) Remove the fog lamp switch. Refer to the Rear
Window Defogger and/or Fog Lamp Switch Removal.
(2) Using two jumper wires, connect Pin 2 and Pin
4 of the switch to battery voltage.
(3) Using a test lamp, connect the test lamp to Pin
3 as shown in (Fig. 3). Refer to (Fig. 4) for fog lamp
switch circuit.
(4) Push the fog lamp switch button. The test lamp
and the LED indicator on the front of the switch
should illuminate.
(5) If either the LED or the test lamp fails to illu-
minate, replace the switch.Fig. 1 Instrument Cluster Without Tachometer
Fig. 2 Instrument Cluster With Tachometer
Fig. 3 Fog Lamp Switch Test
8E - 2 INSTRUMENT PANEL AND SYSTEMSPL
DESCRIPTION AND OPERATION (Continued)

(2) Use a ohmmeter, and check continuity between
the terminals of the switch as shown in the Heater
Blower Test (Fig. 7).
(3) If switch fails any part of the continuity test,
other then Pin 1 to Pin 7, replace heater control. If
no continuity between Pin 1 to Pin 7 check the
lamps, replace if necessary.
INSTRUMENT PANEL AND COMPONENTS
CAUTION: Disconnect the battery negative cable
before servicing the instrument panel or compo-
nents. When power is required for test purposes,
connect battery cable for test only. Disconnect the
battery negative cable after test and before continu-
ing service procedures.
LOW OIL PRESSURE WARNING LAMP TEST
The low oil pressure warning lamp will illuminate
when the ignition switch is turned to the ON position
without engine running. The lamp also illuminates if
the engine oil pressure drops below a safe oil pres-
sure level.
To test the system, turn the ignition switch to the
ON position. If the lamp fails to light, inspect for a
broken or disconnected wire at the oil pressure
switch, located at the front of the engine (Fig. 8). If
the wire at the connector checks good, pull the con-
nector loose from the switch and with a jumper wire,
ground the connector to the engine. With the ignition
switch turned to the ON position, check the warning
lamp. If the lamp still fails to light, inspect for aburned out lamp or disconnected socket in the clus-
ter.
MULTIPLE GAUGE INOPERATIVE TEST
Test speedometer, tachometer and other gauges for
malfunction:
(1) Remove the cluster. Refer to Cluster Removal
and Installation.
(2) Check for ignition voltage at Pin J1-5 of the
cluster wire harness connector (Fig. 9) and (Fig. 10).
Check for battery voltage at Pin J1-6 of the connec-
tor. If no voltage, repair as necessary.
(3) Check Pin J1-8 of the connector for continuity
to ground. If no ground, repair as necessary.
(4) If the voltage and ground are OK, and the pins
or the connectors are not distorted, replace the
printed circuit board.
(5) Install cluster.
INDIVIDUAL GAUGE INOPERATIVE
FUEL GAUGE
(1) Disconnect the fuel gauge sending unit.
Fig. 7 Heater Blower Switch Test
Fig. 8 Oil Pressure Switch
Fig. 9 Cluster Wire Harness Connector
8E - 4 INSTRUMENT PANEL AND SYSTEMSPL
DIAGNOSIS AND TESTING (Continued)

(8) If all tests performed test good, replace the dial
and gauge assembly.
(9) If the tachometer continues to be inoperative,
replace the print circuit board.
TEMPERATURE GAUGE
(1) Disconnect the coolant temperature sensor
(Fig. 12).
(2) Turn ignition switch ON. The temperature
gauge should be at its lowest position. Turn ignition
switch OFF.
(3) Ground temperature gauge sending unit con-
nector Pin 3. Refer to Group 8W, wiring Diagrams.
Turn ignition switch ON. The temperature gauge
should be at its highest position. After the seat belt
lamp goes out, the cluster should chime for about
eight seconds.
(a) If OK, check temperature sending unit con-
nector for proper connection. If connections are OK,
replace the sending unit.
(b) If not OK, and the high temperature chime
sounds but the gauge shows cold, replace the gauge
assembly. If gauge is still not working, replace the
printed circuit board.
SPEEDOMETER SYSTEM
The vehicle is equipped with a electronically driven
speedometer and odometer assemblies. A signal is
sent from a transmission-mounted vehicle speed sen-
sor to the speedometer circuitry through the wiring
harness.
SEAT BELT REMINDER SYSTEM TEST
For testing of this system refer to Group 8U,
Chime Warning/Reminder Systems.
SENDING UNIT
When a problem occurs with a cluster gauge check
for a defective sending unit or wiring. Do this before
disassembling the cluster.(1) Sending units and wiring can be checked by
grounding the connector leads at the sending unit in
the vehicle.
(2) With the ignition in the ON position, a
grounded input will cause the fuel or temperature
gauge to read at or above maximum.
SERVICE ENGINE SOON INDICATOR
Refer to Group 25, Emission Control Systems for
procedures.
VEHICLE SPEED SENSOR TEST
To test the vehicle speed sensor and related compo-
nents use a scan tool (DRB), and refer to the appro-
priate Powertrain Diagnostics Test Procedure
Manual.
REMOVAL AND INSTALLATION
ASH RECEIVER RETAINER AND LAMP
REMOVAL
(1) Open up and remove the ash receiver recepta-
cle.
(2) Remove the center bezel.
(3) Remove the two ash receiver retainer attaching
screws from the upper-rearward face and remove
retainer.
(4) For lamp replacement, remove the clamp and
lamp hood from the top of the retainer. Remove the
wiring clip at the forward edge of the retainer and
remove the lamp socket from the hood and replace
lamp.
INSTALLATION
For installation reverse the above procedures.
When installing the retainer ensure that the forward
tabs are inserted properly into the slots in the instru-
ment panel.
CENTER BEZEL
REMOVAL
(1) Open the ash receiver receptacle.
(2) Grasp the bezel and pull rearward disengaging
the clips.
INSTALLATION
For installation, reverse the above procedures.
CIGAR LIGHTER RECEPTACLE
REMOVAL
(1) Remove the cigar lighter element.
(2) Reach underneath the instrument panel
through the bottom access hole and disconnect the
cigar lighter receptacle wiring connectors.
Fig. 12 Engine Coolant Temperature Sensor
8E - 6 INSTRUMENT PANEL AND SYSTEMSPL
DIAGNOSIS AND TESTING (Continued)

(3) Press the cigar lighter receptacle from the
mounting ring by pushing it rearward from the back
side of the panel. Considerable force may be required
to disengage the receptacle. Remove the mounting
ring from the panel and discard. A new ring should
be used upon reinstallation to assure retention.
INSTALLATION
For installation, reverse the above procedures.
CLUSTER
CAUTION: Cluster MUST be stored in a face up posi-
tion or damage will occur to the gauge operation.
REMOVAL
(1) Disconnect the battery to ensure no DTCs are
generated.
(2) Remove the instrument panel top cover and
cluster bezel.
(3) Remove the four screws attaching cluster hous-
ing to the base panel.
(4) Pull the cluster rearward to disconnect from
base panel.
(5) Remove the cluster assembly.
INSTALLATION
For installation, reverse the above procedures.
CLUSTER LAMP
The Instrument Cluster illumination Lamps location
are shown in (Fig. 13). The cluster is viewed from the
rear. To replace lamp(s), the cluster must be removed.
Refer to Cluster Removal and Installation procedure.
CLUSTER PRINTED CIRCUIT BOARD
REMOVAL
(1) Remove the cluster, refer to Cluster Removal.
(2) Remove the attaching screws and rear cover
(Fig. 14). The bottom screws attaching lens to hous-
ing can be accessed without removing foam pad.
Fig. 13 Instrument Cluster Illumination Lamps
Fig. 14 Cluster Assembly
PLINSTRUMENT PANEL AND SYSTEMS 8E - 7
REMOVAL AND INSTALLATION (Continued)

(3) Disconnect the odometer connector and remove
eight attaching screws that attach the printed circuit
board and housing (Fig. 15).
(4) Carefully remove printed circuit board from the
cluster.
INSTALLATION
For installation, reverse the above procedures.
Carefully place board on the cluster and ensure that
the odometer connector is placed through the board.
Gently press board on cluster with a slight rocking
motion to ensure pins on gauges line up.
DOME LENS/LAMP
REMOVAL
Pry either the forward or rearward edge of the lens
away from the retainer and replace the lamp.
INSTALLATION
For installation, snap lens into retainer.
FLOOR CONSOLE
REMOVAL
(1) Remove the MTX shifter knob only.
(2) Remove the attaching screws from each side of
the cup holder.
(a) Non-armrest console. Remove the two screws
from the rear of the console (Fig. 16).
(b) Armrest console. Remove the four screws in
the console bin.
(3) Pull the parking brake lever up all the way.
(4) Lift the console at the rear and guide it out
from under the instrument panel.
INSTALLATION
For installation, reverse the above procedures.
GAUGE
REMOVAL
(1) Remove the cluster. Refer to Cluster Removal.
(2) Remove the attaching screws PC board cover
(Fig. 15). The bottom screws attaching lens to hous-
ing can be accessed without removing the foam pad.
(3) Disconnect the odometer connector.
(4) Remove the lens attaching screws and remove
the lens.
(5) Carefully pry out the dial and gauge assembly.
INSTALLATION
For installation, reverse the above procedures.
(1) When handling or storing the cluster ensure
that overlays are not damaged. Set the cluster in the
face up position or the gauge operation will be dam-
aged.
(2) The gauges are replaced as an dial and gauge
assembly.
GLOVE BOX DOOR/BIN
REMOVAL
(1) Disconnect battery negative cable and isolate it
or remove fuse 12 prior to removing the switch, or
the wires may short to ground.
(2) Remove the screws along the bottom of glove
box door.
(3) Open the glove box and push the glove box
sides inward allowing the door bumpers to clear and
box to tip forward.
(4) Pull the glove box door/bin rearward and
remove from vehicle.
INSTALLATION
For installation, reverse the above procedures.
Fig. 15 Printed Circuit Board
Fig. 16 Floor Console with Transmission Range
Indicator
8E - 8 INSTRUMENT PANEL AND SYSTEMSPL
REMOVAL AND INSTALLATION (Continued)

(6) Remove the screws attaching lens, dial and
gauge assembly to the housing. The bottom screws
attaching lens to the housing can be accessed without
removing the foam pad.
(7) Remove the lens, dial and gauge assembly from
housing.
(8) Remove the two screws holding the odometer to
dial and gauge assembly. When setting the dial/gauge
and/or cluster assembly down, it must be face up or
the gauge operation will be damaged.
INSTALLATION
For installation, reverse the above procedures.
Carefully place the dial and gauge assembly on the
cluster and ensure that the odometer connector is
placed through the board. Install with a slight rock-
ing motion to ensure the pins on gauges line up.
RADIO
For Radio removal procedures, Refer to Group 8F,
Audio Systems.
REAR WINDOW DEFOGGER AND/OR FOG LAMP
SWITCH
REMOVAL
(1) Remove the top cover and cluster bezel assem-
bly. Refer to the Top Cover and Cluster Bezel
Removal above.
(2) Reach in and disengage the bezel latches and
remove assembly (Fig. 23).
(3) Pull the bezel and switch(s) rearward from the
opening and disconnect the wire connector(s).
(4) Remove the switch from the bezel.
INSTALLATION
For installation, reverse the above procedures.
RIGHT TRIM PANEL
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Using a trim stick (special tool #C-4755), gently
pry up on the top cover and cluster bezel to remove
(Fig. 19).
(3) Open the ash receiver.
(4) Using a trim stick (special tool #C-4755), gently
pry out on the center bezel and remove.
(5) Remove the six attaching screws across the for-
ward portion of the right upper trim panel. Then pull
Fig. 20 Center Floor Pan Bracket
Fig. 21 Side Bracket
Fig. 22 Odometer
Fig. 23 Rear Window Defogger and Fog Lamp
Switch
8E - 12 INSTRUMENT PANEL AND SYSTEMSPL
REMOVAL AND INSTALLATION (Continued)

INSTRUMENT PANEL AND SYSTEMS
CONTENTS
page page
DIAGNOSIS AND TESTING
FOG LAMP SWITCH TEST................ 1
HEADLAMP LEVELING SWITCH........... 1
INSTRUMENT PANEL AND COMPONENTS . . . 2
REMOVAL AND INSTALLATION
END CAP RHD ......................... 2FRONT FOG LAMP SWITCH.............. 2
HEADLAMP LEVELING SWITCH........... 3
REAR WINDOW DEFOGGER AND/OR REAR
FOG LAMP SWITCH................... 3
DIAGNOSIS AND TESTING
FOG LAMP SWITCH TEST
Refer to Group 8W, Wiring Diagrams for wiring or
circuit information.
FRONT
(1) Remove the fog lamp switch and disconnect the
connector at the center stack.
(2) Using two jumper wires connect Pin L7 to bat-
tery voltage, and connect Pin Z03 to ground (Fig. 1).
(3) Push the fog lamp switch button. The LED
indicator on the front of the switch should illuminate.
Check Pin L35 with a test lamp for battery voltage.
(4) If either the LED or the test lamp fails to illu-
minate, replace the switch.
REAR
(1) Remove the fog lamp switch. Refer to Rear
Window Defogger and/or Fog Lamp Switch Removal.
(2) Using two jumper wires connect Pin 2 and Pin
4 of the switch to battery voltage.
(3) Using a test lamp, connect the test lamp to Pin
3 as shown in (Fig. 2). Refer to Group 8W, Wiring
Diagrams for fog lamp switch circuit.(4) Push the fog lamp switch button. The test lamp
should illuminate, and the LED indicator on the
front of the switch.
(5) If either the LED, or the test lamp fails to illu-
minate, replace the switch.
HEADLAMP LEVELING SWITCH
(1) Remove the headlamp leveling switch from the
instrument panel and disconnect the wire harness
connector from the switch. Refer to Wiring Diagrams
for the proper wire circuits and the wire connector
connections.
(2) If the L.E.D. is not illuminated, using a voltme-
ter, connect B+ lead to Pin 4 of the Wire harness con-
nector. Connect the negative lead to Pin 3. Turn ON
the headlamp switch to the low beam position and
ensure the instrument panel dimmer switch is on
day light driving position. If voltage is present,
replace switch. If no voltage, connect the ground lead
to a good ground, if voltage, repair Pin 3 ground cir-
cuit as necessary, and if no voltage, refer to Wiring
Diagrams and test circuit back to headlamp switch.
(3) Using a voltmeter, connect B+ lead to Pin 2 of
the Wire harness connector. Connect the negative
lead to Pin 3. Turn ON the headlamp switch to the
low beam position. If battery voltage, go to Step 5. If
not OK, go to Step 4.
Fig. 1 Front Fog Lamp Switch Circuit Diagram
Fig. 2 Rear Fog Lamp Switch Test
PLINSTRUMENT PANEL AND SYSTEMS 8E - 1