warning lights CHEVROLET DYNASTY 1993 User Guide

AP BODY INDEX
page page
Cluster and Gauge Service and Testing ....... 58
Gauges ................................ 61
General Information ....................... 58 Instrument Panel Replacement
.............. 72
Interior Lamp Replacement ................. 73
Switch and Panel Component Service ......... 67
GENERAL INFORMATION
INSTRUMENT CLUSTER
There are two conventional instrument cluster as-
semblies available. The clusters incorporates mag-
netic type gauges and an electronically driven
speedometer and odometer assembly (Fig. 1 and 2).
MAGNETIC GAUGES
All gauges on the AP Body clusters are the mag-
netic type gauges. When the ignition switch is in the
OFF position each gauge, except for the voltmeter
and tachometer will show a reading. However, the
readings are only accurate when the ignition switch
is in the ON position.
TACHOMETER DRIVE MODULE
The tachometer drive module is an electronic mod-
ule used to drive the magnetic tachometer in the
high line cluster. This module is located on top of the instrument
cluster.
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. 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
under the individual radio operating instructions re-
fer to the Sound Systems Manual supplied with the
vehicle.
WARNING LAMPS AND INDICATOR LIGHTS
The instrument cluster has warning and indicators
lamps for eight different systems:
² Low oil pressure
² Brake warning
² Seat belt warning
² Malfunction indicator (check engine) lamp
² Air Bag
² High beam indicator
² Right and left turn signals.
² Anti-lock (ABS)
CLUSTER AND GAUGE SERVICE AND TESTING
CAUTION: Disconnect the negative battery cable
before servicing the instrument panel. When power
is required for test purposes, reconnect battery ca-
ble for test only. Disconnect the negative battery
cable after test and before continuing service pro-
cedures.
SENDING UNIT TEST
Check for a defective sending unit or wiring, when
a problem occurs with a cluster gauge. 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.
Fig. 1 Instrument Cluster With Tachometer
Fig. 2 Instrument Cluster Without Tachometer
8E - 58 INSTRUMENT PANEL AND GAUGES Ä

FUEL TANK SENDING UNIT TEST
Refer to Group 14, Fuel for test procedures.
LOW OIL PRESSURE WARNING LAMP TEST
The low oil pressure warning lamp will illuminate
when the ignition key is turned to the ON position
without engine running. The lamp also illuminates
should the engine oil pressure drop below a safe oil
pressure level. To test the system turn ignition key to the ON po-
sition. If the lamp fails to light, inspect for a broken
or disconnected wire at the oil pressure combination
unit, located at the front of the engine (Fig. 3). If the
wire at the connector checks good, pull connector
loose from the switch and with a jumper wire ground
connector to the engine. With the ignition key turned
to the ON position check the warning lamp. If lamp
still fails to light, inspect for a burned out lamp or
disconnected socket in the cluster.
COMBINATION OIL SENDING UNIT TEST
The combination oil sending unit has two func-
tions: (1) The normal closed circuit keeps the oil pressure
warning lamp on until there is oil pressure (Fig. 4).
(2) The sending unit provides a resistance that
varies with oil pressure. To test the normally closed oil lamp circuit, discon-
nect the locking connector and measure the resis-
tance between the switch terminal and the metal
housing. The ohmmeter should read continuity. Start
the engine. If there is oil pressure, the ohmmeter should read
an open circuit. To test the sending unit, measure the resistance
between the sending unit terminal and the metal
housing. The ohmmeter should no continuity. Start
the engine. The ohmmeter should read between 30 to 55 ohms,
depending on engine speed, oil temperature and oil
viscosity. If the above results are not obtained, replace the
sending unit.
SEAT BELT WARNING SYSTEM
For testing of this system refer to Group 8M, Re-
straint Systems.
AIR BAG WARNING SYSTEM
For testing of this system refer to Group 8M, Re-
straint Systems.
MALFUNCTION INDICATOR (CHECK ENGINE) SYSTEM
For testing of this system using DRB II, refer to
the Body Powertrain Diagnostic Procedures.
BRAKE SYSTEM WARNING LAMP TEST
The brake warning lamp illuminates when parking
brake is applied with ignition key turned ON. The
same lamp will also illuminate should one of the two
service brake systems fail when brake pedal is ap-
plied. Refer to Brake system warning Lamp Diagno-
sis (Fig. 5). To test system turn ignition key ON and apply
parking brake. If lamp fails to light, inspect for a
burned out lamp, disconnected socket, a broken or
disconnected wire at switch. The lamp also lights
when the ignition switch is turned to start. To test service brake warning system, raise vehicle
on a hoist and open a wheel cylinder bleeder while a
helper depresses brake pedal and observes warning
lamp. If lamp fails to light, inspect for a burned out
lamp, disconnected socket, a broken or disconnected
wire at switch. If lamp is not burned out and wire continuity is
proven, replace brake warning switch in brake line
Tee fitting mounted on frame rail in engine compart-
ment below master cylinder (Fig. 6).
CAUTION: If wheel cylinder bleeder was opened
check master cylinder fluid level.
Fig. 3 Combination Oil Sending Unit
Fig. 4 Combination Oil Sending Unit Test
Ä INSTRUMENT PANEL AND GAUGES 8E - 59

HORNS
CONTENTS
page page
GENERAL INFORMATION .................. 1
HORN SWITCH REPLACEMENT ............ 3 TESTING HORN SYSTEM
................. 1
GENERAL INFORMATION
WARNING: ON VEHICLES EQUIPPED WITH AIR
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The horn circuit consists of a horn switch, horn re-
lay, and horns. The horn circuit feed is from the fuse
box to the number 1 terminal on the horn relay.
When the horn switch is depressed, this completes
the circuit to ground. This activates the horn relay
and an set of contacts in the relay to close, which al-
lows current to flow to the horn(s). The horn ground
wire is attached to the headlamp ground screw (Fig.
1).
TESTING HORN SYSTEM
HORNS WILL NOT SOUND
If the horns do not sound, check for a blown horn
fuse in the fuse block. If the fuse is blown, replace it
with the same fuse type. If the horns fail to sound
and the new fuse blows when depressing the horn
switch, a short circuit in the horn or the horn wiring
between the fuse terminal and the horn is responsi-
ble. If the fuse is good, disconnect wire connector at
horn. Using an test lamp, connect one lead to the
negative terminal and the other to the positive ter-
minal (Fig. 2). Depress the horn switch, the test
lamp should illuminate. If not connect the test lamp wire to a good ground and depress the horn switch. If
test lamp lights inspect ground wire circuit and re-
pair as needed.
If the test lamp fails to illuminate, check for a de-
fective horn relay. Substituting a known good horn
relay in the circuit. If the test lamp illuminates
when depressing the horn switch, the original relay
is defective. If the test lamp fails to illuminate with
a known good relay, unplug that relay. Connect a
jumper wire from the battery terminal to the horn
terminal on the relay terminal board (Fig. 3, 4, or 5).
If the test lamp connected in place of the horns, fails
to illuminate an open circuit in the wiring between
the relay terminal and the horn switch is at fault re-
pair as necessary.
HORNS SOUND CONTINUOUSLY
CAUTION: Continuous sounding of horns may
cause relay to fail.
Should the horns sound continuously, unplug the
horn relay from the terminal board inside the pas-
senger compartment. Plug in a known good relay. If
the horns stop blowing, relay is defective and must
be replaced. Should the horns still sound, proceed as
follows: Connect one voltmeter lead to battery termi-
nal on relay board and the other lead to switch ter-
minal. Refer to Figs. 6, 7, or 8. Voltmeter will
Fig. 1 Conventional Horn System
Fig. 2 Horn and Connector
Ä HORNS 8G - 1

SERVICE OF DEPLOYED AIR BAG MODULE
After an air bag has been deployed, the air bag
module and clockspring must be replaced because
they cannot be reused. Other air bag system compo-
nents are replaced if damaged.
SCHEDULED MAINTENANCE INSPECTION
Vehicles equipped with a Air Bag System must be
inspected every three years or 30,000 miles / 48,000
Km. The following items should be inspected. (1) Inspect components for damage or deteriora-
tion. (a) If the air bag module housing shows signs of
physical damage or abuse, replace the module. (b) Check that both front impact sensors are
properly installed to the upper crossmember of the
radiator closure panel. Repair as required.
(2) Check the air bag warning lamp for proper op-
eration as follows: (a) Turn ignition switch to the ON position, the
air bag warning lamp should light. If not, test the system using the DRB II and Passive Restraint
System Diagnostic Procedures Manual. Repair as
required.
(b) The air bag warning lamp lights, but fails to go
out after ten seconds. Test the system using the DRB
II and Passive Restraint System Diagnostic Proce-
dures Manual. Repair as required. (c) Erasing of fault codes is not required.
AIR BAG SYSTEM CHECK
WARNING: BEFORE BEGINNING ANY AIR BAG SYS-
TEM CHECK PROCEDURES, REMOVE AND ISOLATE
THE BATTERY NEGATIVE (-) CABLE (GROUND)
FROM THE VEHICLE BATTERY. THIS IS THE ONLY
SURE WAY TO DISABLE THE AIR BAG SYSTEM.
FAILURE TO DO THIS COULD RESULT IN ACCIDEN-
TAL AIR BAG DEPLOYMENT AND POSSIBLE PER-
SONAL INJURY.
WHEN AN UNDEPLOYED AIR BAG ASSEMBLY IS
TO BE REMOVED FROM THE STEERING WHEEL,
DISCONNECT BATTERY GROUND CABLE AND
ISOLATE. ALLOW SYSTEM CAPACITOR TO DIS-
CHARGE FOR TWO MINUTES, THEN BEGIN AIR
BAG REMOVAL. (1) Disconnect the battery negative cable and iso-
late. (2) Remove forward console or cover as necessary.
(3) Connect DRB II to ASDM diagnostic 6-way con-
nector, located at right side of module. (4) Turn the ignition key to ON position. Exit vehicle
with DRB II. Use the latest version of the proper
cartridge. (5) After checking that no one is inside the vehicle,
connect the negative battery cable. (6) Using the DRB II, read and record active fault
data. (7) Read and record any stored faults.
(8) Refer to the Passive Restraint Diagnostic Test
Manual if any faults are found in steps 6 and 7. (9) Erase stored faults if there are no active fault
codes. If problems remain, fault codes will not erase. (10) With the ignition key in the ON position, make
sure no one is in the vehicle. (11) From the passenger side of vehicle, turn the
ignition key to OFF then ON and observe the instru-
ment cluster air bag lamp. It should go on for 6 to 8
seconds, then go out; indicating system is functioning
normally. If air bag warning lamp either fails to light,
blinks on and off or goes on and stays on, there is
a system malfunction. Refer to the Passive Re-
straint Diagnostic Test Manual to diagnose the
problem.
Fig. 3 Seal the Air Bag Exhaust Vents
Fig. 4 Vacuum Heater and A/C Outlets
Ä RESTRAINT SYSTEMS 8M - 3

Wiring Diagram
Name Sheet Number
RS Amplifier ......................... .122, 123
Electronic Cluster ........................ .99, 100
Data Link Connector ....................... .100
Electronic Cluster Printed Circuit Board Connector .......201
Electronic Fuel Pump and Gauge System ..............36
Electronic Vehicle Information Center Connector ........189
Electronic Vehicle Information Center Engine Compartment Sensors ...................... .97, 98
Brake Fluid Level Sensor ......................98
Coolant Level Sensor .........................98
Data Link Connector .........................97
EVIC Engine Node ...........................98
Engine Air Conditioning and Heater System (3.0L, 3.3L & 3.8L Engine) ................55
A/C and Heater Blower Motor Resistor ..............55
A/C Blower Motor ...........................55
A/C Low Pressure Switch ......................55
A/C Switch ...............................55
A/C Variable Output Compressor Clutch .............55
Blower Switch .............................55
Defrost Switch .............................55
Illumination Lamps ..........................55
Engine Coolant Temperature Sending Unit ........30, 31, 32
Engine Coolant Temperature Sensor ..............19, 25
Engine Oil Level Sensor ..................... .31, 32
Engine Oil Pressure and Temperature Warning System (2.5L) .............................30
Engine Coolant Temperature Sending Unit ............30
Engine Oil Pressure Switch .....................30
Engine Oil Pressure and Temperature Warning System (3.0L) .............................31
Engine Coolant Temperature Sending Unit ............31
Engine Oil Level Sensor .......................31
Engine Oil Pressure Sending Unit/Switch ............31
Engine Oil Pressure and Temperature Warning System (3.3L & 3.8L) .............................32
Engine Coolant Temperature Sending Unit ............32
Engine Oil Level Sensor .......................32
Engine Oil Pressure Sending Unit/Switch ............32
Engine Starter System (2.5L) .....................12
Automatic Park/Neutral Start Switch ...............12
Back-Up Lamp Switch ........................12
Engine Starter Motor .........................12
Engine Starter Relay .........................12
Transmission Solenoid ........................12
Engine Starter System (3.0L, 3.3L & 3.8L) .............13
Engine Starter Motor .........................13
Engine Starter Relay .........................13
Electronic Fuel Pump and Gauge System ..............36
Fuel Pump Motor ...........................36
Fuel Pump Relay ...........................36
Fuel Tank Level Gauge Sending Unit Fuel Switch .......36
EVAP/Purge Solenoid .................... .15, 20, 27
Fan Control Relay ......................... .52, 54
Front End Lighting-Aero Headlamps (Dodge Dynasty) . . .69, 70 Left Headlamp (Aero) .........................70
Left Park/Turn Signal Lamp .....................70
Left Side Marker Lamp ........................70Wiring Diagram
Name Sheet Number
Right Headlamp (Aero) ........................69
Right Park/Turn Signal Lamp ....................69
Right Side Marker Lamp .......................69
Front End Lighting-Aero Headlamps with Daytime Running Lights (Dodge Dynasty) .................... .71, 72
Daytime Running Lamp Module ..................72
Left Headlamp (Aero) .........................72
Left Park/Turn Signal Lamp .....................72
Left Side Marker Lamp ........................72
Right Headlamp (Aero) ........................71
Right Park/Turn Signal Lamp ....................71
Right Side Marker Lamp .......................71
Front End Lighting Concealed Headlamps (Imperial) . . . .73, 74
Left Cornering Lamp .........................74
Left High Beam Headlamp ......................74
Left Low Beam Headlamp ......................74
Left Park Lamps ............................74
Left Park/Turn Signal Lamp .....................74
Left Side Turn Lamp .........................74
Right Cornering Lamp ........................73
Right High Beam Headlamp .....................73
Right Low Beam Headlamp .....................73
Right Park Lamps ...........................73
Right Park/Turn Signal Lamp ....................73
Right Side Turn Lamp ........................73
Front End Lighting Concealed Headlamps with D.R.L.1 (Imperial) .......................... .75, 76, 77
Daytime Running Lamp Module ..................76
Left Cornering Lamp .........................77
Left High Beam Headlamp ......................77
Left Low Beam Headlamp ......................77
Left Park Lamps ............................77
Left Park/Turn Signal Lamp .....................77
Left Side Turn Lamp .........................77
Right Cornering Lamp ........................75
Right High Beam Headlamp .....................75
Right Low Beam Headlamp .....................75
Right Park Lamps ...........................75
Right Park/Turn Signal Lamp ....................75
Right Side Turn Lamp ........................75
Front End Lighting Concealed Headlamps with D.R.L.2 (Imperial) .......................... .78, 79, 80
Daytime Running Lamp Module ..................79
Left Cornering Lamp .........................80
Left High Beam Headlamp ......................80
Left Low Beam Headlamp ......................80
Left Park Lamps ............................80
Left Park/Turn Signal Lamp .....................80
Left Side Turn Lamp .........................80
Right Cornering Lamp ........................78
Right High Beam Headlamp .....................78
Right Low Beam Headlamp .....................78
Right Park Lamps ...........................78
Right Park/Turn Signal Lamp ....................78
Right Side Turn Lamp ........................78
Front End Lighting Concealed Headlamps (New Yorker/5th Avenue) .............................. .81, 82
Ä WIRING DIAGRAMS AC-AY BODY 8W - 315

WIRING DIAGRAMS AG-AJ BODY
ALPHABETICAL INDEX
Wiring Diagram
Name Sheet Number
A/C Compressor Clutch .........................89
A/C and Heater System ..................... .91, 92
A/C Compressor Clutch Relay ...................91
A/C Low Pressure Switch ......................91
A/C High Pressure Switch ......................92
A/C Cycling Switch ..........................92
ABS Warning Lamp Diode .......................69
Airbag System ........................... .84, 85
Clock Spring ..............................84
Diagnostic Module ..........................84
Interface Grommet ..........................85
Left Airbag Sensor ..........................85
Right Airbag Sensor .........................85
Squib (Airbag Igniter) ........................84
Air Conditioning System ........................90
A/C Blower Motor ...........................90
A/C/Heater Blower Motor Resistor .................90
A/C Switch ...............................90
Blower Switch .............................90
Defrost Switch .............................90
Illumination Lamps Switch .....................90
Alarm, Security Module ....................... .127
Ambient Air Temperature Sensor ...............117, 119
Anti-Lock Brake System (Except Turbo 3) .............170
Anti-Lock Brake System Controller ..........68, 69, 70, 71
Anti-Lock Brake System .................68, 69, 70, 71
ABS Controller .................... .68, 69, 70, 71
ABS Hydraulic Modulator ......................68
ABS Pump Motor Relay .......................68
ABS System Relay ..........................69
ABS Warning Lamp Diode ......................69
ABS Warning Switch Lamp Switch ................70
Brake Switch ..............................70
Left Front Wheel Sensor .......................71
Left Rear Wheel Sensor .......................71
Park Brake Switch ...........................70
Right Front Wheel Sensor ......................71
Right Rear Wheel Sensor ......................71
Automatic Shutdown Relay ..................20, 27, 33
Battery ...........................1,9,11,53,56
Body Computer ......................... .165, 166
Body Computer #1 ............................40
Body Computer (Mechanical Cluster) ..............79, 80
Body Computer #2 ............................40
Body Computer (Electronic Cluster) ...............81, 82
Body Wiring to Left Instrument Panel ...............147
Body Wiring to Right Instrument Panel ...........150, 151
Bulkhead Disconnect (50-Way) ................153, 154
Center High Mounted Stop Lamp (AG) ...............140
Center High Mounted Stop Lamp (J-21) ..............141
Center High Mounted Stop Lamp (J-27) ..............142
Charging System (2.5L and Turbo) ................9,10Wiring Diagram
Name Sheet Number
Battery ...................................9
Data Link Connector ..........................9
Generator ................................10
Power Distribution Center ....................9,10
Powertrain Control Module ......................9
Charging System (3.0L) ..................... .11, 12
Battery ..................................11
Generator ................................12
Power Distribution Center .................. .11, 12
Cigar Lighter ................................51
Circuit Breakers (Fuse Cavity #2) ...........8,42,110, 111
Circuit Breakers (Fuse Cavity #3) ..............5,53,116
Clockspring .......................... .59, 65, 84
Clutch Pedal Position Jumper ..................13, 15
Clutch Pedal Position Switch .....................14
Combo Flasher ..............................56
Data Link Connector ..................9,19,25,34,72
Daytime Running Lights Module Connector ............173
Decklid Lock Sense Switch ..................... .102
Dimming Interior Lamps & Headlamp Switch .........51, 52
Ash Receiver Lamp ..........................51
Cluster Lamps .............................52
Cigar Lighter ..............................51
Console Switch Module .......................51
A/C Heater Control Switch Lamp .................52
Headlamp Switch ...........................51
Fog Lamp Switch ...........................51
Fuse Panel Switch ...........................51
Left Pod Lamps ............................51
Left Switch Pod ............................51
Transmission Range Lamp .....................51
Diode ....................................89
Diode Package ....................... .83, 102, 104
Distributor .............................. .21, 26
Dome and Courtesy Lamps (AG) ...............125, 126
Cargo Lamp ............................. .126
Dome Lamp ............................. .126
Front Reading Lamps ....................... .126
Front Reading Lamp Switch ................... .126
Glove Box Lamp & Switch .................... .125
Halo Light .............................. .125
Liftgate Ajar Switch ........................ .125
Vanity Mirror Lamps ....................... .126
Vanity Mirror Lamp Switch ................... .126
Dome, Reading and Courtesy Lamps (J-27 Only) .....121, 122
Courtesy Lamp ........................... .121
Decklid Ajar Switch ........................ .122
Glove Box Lamp .......................... .121
Halo Light .............................. .121
Left Door Courtesy Lamp .................... .122
Rear Mirror Courtesy Lamp ................... .122
Right Door Courtesy Lamp ................... .121
Ä WIRING DIAGRAMS AG-AJ BODY 8W - 533

WIRING DIAGRAMS AP BODY D-P
ALPHABETICAL INDEX
Wiring Diagram
Name Sheet Number
ABS Hydraulic Modulator Unit .....................27
ABS Pump Motor Relay .........................27
ABS System Controller ................... .26, 27, 28
ABS System Relay ............................28
ABS Yellow Light Relay .........................28
A/C and Heater System ..................... .47, 48
A/C Cycling Switch ..........................48
A/C High Pressure Switch ......................48
A/C Low Pressure Switch ......................48
Blower Motor ..............................47
Blower Switch .............................47
Defrost Switch .............................47
Illumination Lamp ...........................47
Resistor .................................48
A/C Compressor Clutch Relay .....................50
Airbag Diagnostic Module Connector ................78
Airbag System ...............................35
Clockspring ...............................35
Diagnostic Module ..........................35
Sensors .................................35
Squibb (Airbag Igniter) ........................35
Anti-Lock Braking System ..................26, 27, 28
Data Link Connector .........................27
Hydraulic Modulator Unit ......................27
Pump Motor Relay ..........................27
System Controller ..................... .26, 27, 28
System Relay ..............................28
Wheel Sensors .............................26
Yellow Light Relay ..........................28
Anti-Lock Brake System Controller Connector ...........90
Ash Receiver Lamp ...........................37
Automatic Shut Down Relay 2.2L E.F.I. .............2,14
Automatic Shut Down Relay 2.5L E.F.I. .............2,14
Automatic Shut Down Relay 3.0L .................2,22
Back-Up Lamp Relay ..........................23
Back-Up Lamp Switch .......................7,8,9
Battery .................................1,3,5
Brake Warning Lamp Switch ......................11
Body to Instrument Panel Wiring Left ................87
Cargo Lamp ................................40
Center High Mounted Stop Lamp ................70, 72
Charging System .........................3,4,5,6
Battery .................................3,5
Generator ...............................4,6
Ignition Off Draw Connector ...................3,5
Chime, Key-In, Seat Belt Warning, Headlamp On .........43
Cigar Lighter ................................37
Cigar Lighter Lamp ............................37
Circuit Breakers Headlamp Switch ...........................36
Cavity #8 ..........................2,11,57,58
Cavity #11 ..............................1,60Wiring Diagram
Name Sheet Number
Clockspring .......................... .29, 35, 42
Clutch Pedal Position Jumper ...................8,10
Clutch Pedal Position Switch .....................7,9
Courtesy Lamps .............................72
Data Link Connector ..................... .13, 22, 27
Daytime Running Lamp Jumper ....................30
Daytime Running Lamp Module ....................30
Daytime Running Lights Module Connector ............84
Defrost Switch ..............................47
Dimmer Switch\eadlamp .......................1,36
Dimmer Switch-Optical Horn ....................1,36
Diode 49
Distributor 2.2L, 2.5L ..........................15
Distributor 3.0L ..............................18
Distributor Ignition Coil ..................... .14, 22
Dome Lamp System ....................... .39, 40
Cargo Lamp ..............................40
Dome Lamp ..............................40
Glove Box Lamp ............................39
Glove Box Lamp Switch .......................39
Left Front Door Jamb Switch ....................39
Left Rear Door Jamb Switch ....................40
Liftgate Latch Switch .........................40
Right Front Door Jamb Switch ...................39
Right Rear Door Jamb Switch ...................40
Door and Rear Speakers (Radio) ...................66
Door Jamb Switches ....................... .39, 40
Door Lock System-2 Door .................... .61, 62
Door Lock System-4 Door .................... .63, 64
Engine Coolant Temperature Sending Unit .............12
Engine Coolant Temperature Sensor 2.2L ..............15
Engine Coolant Temperature Sensor 2.5L ..............15
Engine Coolant Temperature Sensor 3.0L ..............18
Engine Oil Pressure Sending Unit/Switch ..............12
Engine Oil Pressure Switch .......................12
Engine Oil Pressure and Temperature System ...........12
Engine to Instrument Panel Wiring ..................86
Engine Starter System ....................7,8,9,10
Engine Starter System (Automatic Transmission) .....2,8,10
Back-Up Lamp Switch .........................8
Clutch Pedal Position Jumper ..................8,10
Engine Starter Motor .......................8,10
Engine Starter Relay ........................8,10
Park/Neutral Position Switch .....................8
Transmission EMCC Solenoid ....................8
Engine Starter System (Manual Transmission) ........2,7,9
Back-Up Lamp Switch .......................7,9
Clutch Pedal Position Switch ...................7,9
Engine Starter Motor ........................7,9
Engine Starter Relay ........................7,9
Squib Igniter (Airbag) ........................35
Exhaust Gas Recirculation Solenoid 2.2L ..............13
Ä WIRING DIAGRAMS AP BODY D-P 8W - 717

BODY DIAGNOSTIC PROCEDURES INDEX
page page
Water Leaks ............................. 2 Wind Noise.............................. 3
WATER LEAKS
Water leaks can be caused by poor sealing, improper
body component alignment, body seam porosity, miss-
ing plugs, or blocked drain holes. Centrifugal and
gravitational force can cause water to drip from an
area somewhat distant from the actual leak point,
making leak detection difficult. All body sealing points
should be water tight in normal wet driving conditions.
Water flowing downward from the front of the vehicle
should not enter the passenger or luggage compart-
ment. Moving sealing surfaces will not always seal
water tight under all conditions. At times, side glass,
door, or convertible top seals will allow water to enter
the passenger compartment during high pressure
washing or hard driving rain (severe) conditions. Over
compensating on door, glass, or top adjustments to stop
a water leak that occurs under severe conditions, can
cause premature seal wear and excessive closing or
latching effort. After a repair procedure has been
performed, water test vehicle to verify leak has stopped
before returning vehicle to use.
VISUAL INSPECTION BEFORE WATER LEAK TESTS
Verify that floor and body plugs are in place, body
drains are clear and body components are aligned and
sealed. If component alignment or sealing is necessary,
refer to the appropriate section of this group for proper
procedures.
WATER LEAK TESTS
WARNING: DO NOT USE ELECTRIC SHOP LIGHTS
OR TOOLS IN WATER TEST AREA, PERSONAL IN-
JURY CAN RESULT.
When a determination has been made on the condi-
tions that a water leak occurs, simulate the conditions
as closely as possible.
² If a leak occurs when the car is parked in a steady
light rain, flood the leak area with a open ended garden
hose.
² If a leak occurs at highway speeds in a steady rain,
test the leak area with a stream or fan spray of water
from a garden hose with an adjustable nozzle. Direct
the spray in the direction comparable to actual condi-
tions. ²
If a leak seems to occur only when the vehicle is
parked on an incline, hoist the end or side of the vehicle
to simulate this condition before water testing. This
method can also be used when the leak occurs when the
vehicle accelerates, stops, or turns. If the leak occurs
on acceleration, hoist the front of the vehicle. If the
leak occurs when braking, hoist the back of the vehicle.
If the leak occurs on left turns, hoist the left side of the
vehicle. If the leak occurs on right turns, hoist the right
side of the vehicle. For hoisting recommendations refer
to Group 0, Lubrication and Maintenance, General
Information section.
WATER LEAK DETECTION
To detect a water leak point of entry, perform a water
test and watch for water tracks or droplets forming on
the inside if the vehicle. If necessary remove interior
trim covers or panels to gain visual access to the leak
area. If the hose can not be positioned without being
held, have someone help perform the water test. Some water leaks must be tested for a considerable
length of time to become apparent. When a leak ap-
pears, determine the highest point of the water track or
drop. The highest point usually will indicate the point
of entry. After leak point has been determined, repair
the leak and water test to verify that leak has stopped. Locating the entry point of water that is leaking into
a cavity between panels can be difficult. The trapped
water splashes or runs from the cavity it is dammed up
in, often at a distance from the entry point. Most water
leaks of this type become apparent after accelerating,
stopping, turning, or when on a incline.
MIRROR INSPECTION METHOD
When a leak point area is visually obstructed, use a
suitable mirror to gain visual access. A mirror can also
be used to deflect light to a limited access area to assist
in locating a leak point.
BRIGHT LIGHT LEAK TEST METHOD
Some water leaks in the luggage compartment can be
detected without water testing. Position the vehicle in
a brightly light area. From inside the darkened lug-
gage compartment inspect around seals and body
seams. If necessary, have a helper direct a drop light
over the suspected leak areas around the lug-
23 - 2 BODY Ä