1993 CHEVROLET DYNASTY fuses

INTERMITTENT WINDSHIELD WIPER MOTOR AND SWITCH SERVICE PROCEDURES
INDEX
page page
Intermittent Windshield Wiper Switch Tests ..... 12
Intermittent Wipe Switch Test ............... 14
Intermittent Wiper Function Tests ............ 14
Intermittent Wiper Motor System Test ......... 12 Pulse Intermittent Windshield Wiper Controller
(PIWWC) .............................. 15
Standard Wiper Switch Test ................ 14
Wiper Switch Service Procedure ............. 15
INTERMITTENT WIPER MOTOR SYSTEM TEST
Intermittent Wiper Motor Service Procedures for
diagnosis of problems which do not involve the delay
function, refer to the Two-Speed Motor Function
Tests. The two-speed functions of all wiper motors
are identical. If a problem occurs, only in the DELAY mode, the
following tests are to be performed.
INTERMITTENT WINDSHIELD WIPER SWITCH
TESTS
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The intermittent wipe function on AC, AG, AJ and
AY vehicles is controlled by the body controller, lo-
cated in the passenger compartment behind the right
side kick panel (Fig. 22). If the body controller is de-
termined to be the problem, refer to Group 8E, In-
strument Panels and Gauges, for replacement
procedures.
CONDITION: WIPERS DO NOT COME ON WHEN THE SWITCH IS IN DELAY POSITION
PROCEDURE
(1) Disconnect 25-way connector (blue) from the
body controller. (2) Place wiper control switch in maximum DE-
LAY position. (3) Connect positive lead of voltmeter to pin 9 of
connector (blue) and negative lead to the good
ground. (a) If voltmeter reads 0, check control switch and
wiring for an open circuit. (b) If voltmeter reads 10 to 15 volts, proceed to
step 4.
(4) Connect positive lead of voltmeter to pin 22 of
blue connector and negative lead to a good ground. (a) If voltmeter reads 0, check fuses and wiring
for an open circuit. (b) If voltmeter reads 10 to 15 volts, reconnect
body controller and proceed to step 5.
(5) Connect positive lead of voltmeter to pin 24 of
blue connector and negative lead to the metal case of
the body controller. Disconnect wiring harness from
wiper motor. Set control switch to the minimum de-
lay mode. (a) If voltmeter reads 0, check wiring from the
intermittent wipe switch to body controller for an
open circuit. (b) If voltmeter reads 10 to 15 volts, proceed to
step 6.
(6) Connect voltmeter to pin L of the Intermittent
wiper switch. Place intermittent wiper switch in the
Max. Delay position. (a) If voltmeter reads zero volts, change the in-
termittent wiper switch. (b) If voltmeter reads 10-15 volts, check the wir-
ing harness from the intermittent wiper switch to
the wiper motor for an open circuit.
(7) If all tests above have been performed and the
problem was not found, replace the body controller.
Fig. 22 Body Controller Location
8K - 12 WINDSHIELD WIPER AND WASHER SYSTEMS Ä

LAMPS
CONTENTS
page page
BULB APPLICATION TABLE ............... 38
CONCEALED HEADLAMPS ................ 27
EXTERIOR LAMP SWITCHES AND HEADLAMP ALIGNMENT ........................... 3
EXTERIOR LAMP SYSTEMS .............. 25
EXTERIOR LAMPSÐAA BODY ............. 7
EXTERIOR LAMPSÐAC BODY ............ 10 EXTERIOR LAMPSÐAG BODY
............ 14
EXTERIOR LAMPSÐAJ BODY ............ 16
EXTERIOR LAMPSÐAP BODY ............ 19
EXTERIOR LAMPSÐAY-BODY ............ 22
GENERAL INFORMATION .................. 1
ILLUMINATED ENTRY SYSTEM ........... 33
GENERAL INFORMATION
Each vehicle is equipped with lamps used for illumi-
nating and indicating purposes. A circuit must have a
good ground to be complete. Circuit ground occurs
when the lamp socket makes contact with the metal
body. On vehicles with plastic lamps, a wire between
the socket and the body makes the grounds. When changing lamp bulbs, check the socket for
corrosion. If corrosion is present, clean contacts with a
wire brush and coat the inside of the socket with
Mopar tMulti-purpose Grease or equivalent.
CAUTION: Do not touch the glass of halogen bulbs
with fingers or any possibly oily surface, reduced
bulb life will result.
BODY IDENTIFICATION
Throughout this Group, references are made to the
vehicle family or body code. To decode the vehicle
identification plates, refer to the Introduction Section
at the front of this manual.
DIAGNOSTIC PROCEDURES
Begin electrical system failure diagnosis by testing
all related fuses and circuit breakers in the fuse block
and engine compartment. When a vehicle experiences problems with the head-
lamp system, verify the condition of the battery con-
nections, charging system, headlamp bulbs, wire con-
nectors, relay, high beam dimmer switch and headlamp
switch. Refer to Wiring Diagrams manual for compo-
nent locations and circuit information.
SYMPTOM
Headlamps are dim when engine is idling of
with ignition turned OFF. Canada cars must
have lamps ON. ACTION
² Clean battery terminal clamps and posts. Refer to
Group 8B, Battery/Starter/Generator Service for
proper procedures.
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Test for high resistance in headlamp circuits.
² Defective headlamp bulb.
SYMPTOM
Bulbs burn out frequently.
ACTION
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Wiring Diagrams
manual for component and splice locations.
SYMPTOM
Headlamps are dim with engine running above
idle. Canada cars must have lamps ON.
ACTION
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Test for high resistance in headlamp circuits.
² Defective headlamp bulb.
SYMPTOM
Headlamps flash randomly.
ACTION
² Test for poor circuit ground.
² Test for high resistance in headlamp circuits.
Ä LAMPS 8L - 1

This connector is included in the power mirror cir-
cuity except, for AC and AY body and should be
checked if the mirrors are inoperative.
MIRROR MOTOR TEST PROCEDURE
(1) Remove power mirror switch from mounting
position. (2) Disconnect switch wiring harness at connector.
In the case of memory mirrors, (green 8-way mirror
connector and memory switch in drivers door panel),
the switch wiring disconnects from the cowl top har-
ness rather than the mirror harness. (3) Using two jumper wires, one connected to a 12
volt source, and the other connected to a good body
ground. Refer to the Mirror Test (Fig. 2 through 5)
for appropriate switch style, and for pin numbers.
(4) If results shown in the Fig. 2 through 5 are not
obtained, check for broken or shorted circuit, or re-
place mirror assembly as necessary.
MIRROR SWITCH TEST PROCEDURE
(1) Remove power mirror switch from mounting
position. (2) Disconnect wiring harness at switch connector.
(3) Using a ohmmeter, test for continuity between
the terminals of the switch as shown in the Mirror
Switch Continuity for appropriate switch style (Fig. 6
through 8). (4) If results shown in the Fig. 5, 6 and 7 are not
obtained, replace the switch.
HEATED MIRROR
Heated mirrors are available on all car lines except
AP Body, with Power Mirrors and Rear Window De-
fogger only. The heated mirror is controlled by the rear window defogger switch. Only time that the
heated mirror is on is when the rear window defog-
ger is on.
TEST PROCEDURES
The mirror should be warm to the touch. (a) If not check fuses.
(b) Test voltage at rear window defogger switch.
² If no voltage repair wire.
² Apply voltage to one wire and ground the other,
refer to Fig. 2 through 5 for pin numbers. Mirror
should become warm to the touch.
Fig. 2 MIRROR TESTÐAP Body
Fig. 3 MIRROR TESTÐAA Body
Fig. 4 MIRROR TESTÐAC and AY Bodies
8T - 2 POWER MIRRORS Ä

GENERAL INFORMATION
CONTENTS
page page
CIRCUIT IDENTIFICATION ................. 3
COMPONENT IDENTIFICATION ............. 3
CONNECTORS ........................... 4
FUSIBLE LINKS ......................... 4
HARNESS REPAIR ....................... 4
LOCATING A SYSTEM .................... 3 SECONDARY IGNITION WIRING
............ 1
SPLICE LOCATIONS ...................... 3
SYMBOLS, FUSES AND RELAYS ........... 7
TROUBLESHOOTING WIRING PROBLEMS .... 4
WIRE CODE IDENTIFICATION .............. 2
WIRING DIAGRAM SHEETS AND INDEXES . . . 1
The wiring diagrams contain the latest information
at the time of publication. Throughout this group ref-
erences may be made to a particular vehicle by letter
or number designation. A chart showing the break-
down of these designations is included below.
SECONDARY IGNITION WIRING
Secondary ignition wiring is shown in Figures 1, 2,
3, 4, and 5. For information on distributor operation
or ignition systems refer to Group 8D Ignition Sys-
tems.
WIRING DIAGRAM SHEETS AND INDEXES
The diagrams are organized to show the basic ve-
hicle and all of its options. Add-on or non-factory op-
tions are not covered. The diagram pages are
identified by a sheet number which is located at the
lower right or left hand corner of each sheet. Page
numbers at the top of each page do not apply to
diagram sheets. Diagram sheets show all information relating to
the system. This includes feeds, grounds, switch in-
ternal circuity, connectors, splices, and pin identifica-
tion for controllers and modules.
1993 MODEL CHART
Ä GENERAL INFORMATION 8W - 1

is non-standard the main wire color will have a slash
(/) after it followed by the tracer color.
CIRCUIT IDENTIFICATION
All circuits in the diagrams use an alpha/numeric
code to identify the wire and its function. To identify
which circuit code applies to a system, refer to the
Circuit Identification Code Chart. This chart shows
the main circuits only and does not show the second-
ary codes that may apply to some models.
LOCATING A SYSTEM
To locate a system or component in the diagrams,
refer to the alphabetical index at the front of the di-
agrams. Determine the diagram sheet number. Sheet
numbers are located at the lower right or left hand
corner of each sheet. Page numbers at the top of
the page do not apply to diagram sheets. The diagram index identifies the main system and
all components in that system. There are also sec-
tions of the index that identify specific components
only (for example modules, lamps, etc.). Refer to a
components name in the index if you are unclear as
to what a system may be called. Diagram pages are arranged starting with the bat-
tery and fuses. Then working into charging, starting,
and ignition systems. After this they start at the
front of the vehicle and work to rear of the vehicle.
The diagrams end with connector identification
pages.
COMPONENT IDENTIFICATION
When looking for a components location on the ve-
hicle refer to the wiring and components section.
This section shows the wire harness routing and the
components location in the vehicle. To use this sec-
tion refer to the wiring diagrams for the location of
the component. Then use the component identifica-
tion index to locate the proper figure number.
SPLICE LOCATIONS
Splices are indicated in the diagrams by a diamond
with a splice circuit code within it (Fig. 9 example 1).
If there is more than one splice per circuit a small
box will be connected to it with the splice number in
it (Fig. 9 example 2). To locate a splice in the wiring harness determine
the splice number from the wiring diagrams then re-
fer to the splice location index. This section shows
the general location of the splice in the harness.
Fig. 6 Wiring Diagram Page Sample
Fig. 7 Wire Color Code Identification
Fig. 8 Wire Color Code Chart
Ä GENERAL INFORMATION 8W - 3

(14) Center the heat shrink tubing over the joint
and heat using a heat gun. Heat the joint until the
tubing is tightly sealed and sealant comes out of both
ends of the tubing. (15) Insert the repaired wire into the connector.
(16) Install the connector locking wedge and recon-
nect the connector to its mating half. (17) Re-tape the wire harness starting 1-1/2 inches
behind the connector and 2 inches past the repair. (18) Connect battery and test all affected systems.
SYMBOLS, FUSES AND RELAYS
Various symbols are used throughout the wiring
diagrams. These symbols can be identified by refer-
ring to the symbol identification chart (Fig. 15). For fuse block, relay bank, or power distribution
center information refer to the fuse charts and relay
bank section.
CAUTION: When replacing a blown fuse it is impor-
tant to replace it with a fuse having the correct am-
perage rating. The use of a fuse with a rating other
than indicated may result in an electrical overload.
If a proper rated fuse continues to blow, it indicates
a problem that should be corrected.
Ä GENERAL INFORMATION 8W - 7

Wiring Diagram
Name Sheet Number
Fan Control Relay ...........................33
Radiator Fan Motor ..........................33
Fog Lamps ............................. .55, 56
Fog Lamp Relay .............................48
Fog Lamp Switch .............................48
Front End Lighting ........................ .55, 56
Front Left Side Marker Lamp ....................56
Front Right Side Marker Lamp ...................55
Left Aero Hi-Low Beam Headlamp .................56
Left Fog Lamp .............................56
Left Park & Turn Signal Lamp ...................56
Right Aero Hi-Low Beam Headlamp ................55
Right Fog Lamp ............................55
Right Park & Turn Signal Lamp ..................55
Fuel Injection Ignition System (2.5L) .......12, 13, 14, 15, 16
Automatic Shutdown Relay ......................14
Distributor ................................15
Engine Coolant Sensor ........................15
EVAP/Purge Solenoid .........................13
Exhaust Gas Recirculation Diagnostic Solenoid .........13
Heated Oxygen Sensor ........................12
Idle Air Control Motor .........................12
Ignition Coil ...............................14
Injector ..................................16
MAP Sensor ...............................13
Powertrain Control Module ............12, 13, 14, 15, 16
Throttle Position (Sensor) ......................12
Vehicle Speed Senosr .........................15
Fuel Injection Ignition System Flex Fuel (2.5L Engine) ................ .17, 18, 19, 20, 21, 22
Auto Shutdown Relay ........................20
Distributor ...............................22
Engine Coolant Sensor ........................21
EVAP/Purge Solenoid .........................19
Fuel Sensor ...............................17
Heated Oxygen Sensor ........................18
Idle Air Control Motor ........................18
Ignition Coil ...............................20
Injectors .................................17
MAP Sensor ..............................19
Powertrain Control Module (PCM) . . . .17, 18, 19, 20, 21, 22
Throttle Position (Sensor) ......................18
Vehicle Speed Sensor ........................21
Fuel Injection Ignition System (3.0L) ............. .23, 24, 25, 26, 27, 28, 29, 30, 31
Automatic Shutdown Relay .....................28
Distributor ...............................27
Engine Coolant Sensor ........................27
Exhaust Gas Recirculation Diagnostic Solenoid .........24
EVAP/Purge Solenoid .........................23
Heated Oxygen Sensor ........................24
Idle Air Control Motor ........................30
Injectors .................................26
Ignition Coil ...............................29
MAP Sensor ..............................30
Power Steering Pressure Switch ..................25Wiring Diagram
Name Sheet Number
Powertrain Control Module (PCM) .............. .23, 24, 25, 27, 28, 29, 30, 31
Throttle Position (Sensor) ......................24
Vehicle Speed Sensor ........................28
Fuel Pump Motor .............................69
Fuel Pump Relay .............................70
Fuel Tank Electrical Systems ...................69, 70
Fuel Pump Motor ...........................69
Fuel Pump Relays ...........................70
Fuel Tank Level Gauge Sending Unit ...............69
Fuse Application Chart .....................1,2,3,4
Fuses Fuse 1 ..............................4,80,84
Fuse 2 .............4,5,39,40,53,74,80,84,87,89
Fuse 3 ..............................1,95,99
Fuse 4 ..............................1,95,99
Fuse 5 ...............1,49,51,68,71,72,84,87,89
Fuse 6 ..............................2,65,89
Fuse 7 ..............................3,11,59
Fuse 8 ......................3,11,44,45,47,77
Fuse 9 .........................3,11,68,71,72
Fuse 11 ...............3,9,11,16,22,37,47,60,84
Fuse 12 ...............................1,61
Fuse 14 ...............................2,48
Fuse 15 .......................2,45,47,48,106
Fuse 16 ..........................2,44,45,59
Fuse 18 .............................4,11,64
Fuse 19 .............................4,11,61
Fuse 20 ..........................4,11,87,89
Fuseblock Module & Relay Blank ..................107
Glove Box Lamp and Switch ......................54
Hazard Flasher ..............................61
Headlamp Dimmer Switch .....................1,50
Headlamp, Key-in, Seat Belt Chimes .................45
Headlamp Optical Horn Dimmer Switch .............1,50
Headlamp Switch ...........................1,49
Headlamp and Fog Lamp Switch ..............48, 49, 50
Fog Lamp Relay ............................48
Fog Lamp Switch ...........................48
Headlamp Switch ...........................49
Optical Horn & Headlamp Dimmer Switch ............50
Headlamp Switch Controlled Interior Lighting .........51, 52
A/C Lamps ...............................52
Ash Receiver Lamp ..........................52
Cigar Lighter Lamp ..........................52
Heater Lamp ..............................52
Radio Lamp ...............................52
Heated Oxygen Sensor ................... .12, 18, 24
Heated Rear Window ..........................84
Heated Rear Window .........................84
Switch ..................................84
Timer ...................................84
Heater System ...............................68
Bi-level Control Switch ........................68
Blower Motor ..............................68
Blower Slide Control .........................68
Heater Control Switch ........................68
8W - 182 WIRING DIAGRAMS AA-BODY Ä

Wiring Diagram
Name Sheet Number
Left Cornering Lamp .........................82
Left High Beam Headlamp ......................82
Left Low Beam Headlamp ......................82
Left Park/Turn Signal Lamp .....................82
Left Side Marker Lamp ........................82
Right Cornering Lamp ........................81
Right High Beam Headlamp .....................81
Right Low Beam Headlamp .....................81
Right Park/Turn Signal Lamp ....................81
Right Side Marker Lamp .......................81
Front End Lighting Concealed Headlamps with D.R.L. (New Yorker/5th Avenue) ................... .83, 84
Daytime Running Lamp Module ..................84
Left Cornering Lamp .........................84
Left High Beam Headlamp ......................84
Left Low Beam Headlamp ......................84
Left Park/Turn Signal Lamp .....................84
Left Side Marker Lamp ........................84
Right Cornering Lamp ........................83
Right High Beam Headlamp .....................83
Right Low Beam Headlamp .....................83
Right Park/Turn Signal Lamp ....................83
Right Side Marker Lamp .......................83
Fuel Injection Ignition System (3.0L) ......19, 20, 21, 22, 23
Automatic Shut Down Relay ....................23
Data Link Connector .........................23
Distributor ...............................19
Distributor Ignition Coil .......................23
Engine Coolant Temperature Sensor ...............19
EVAP/Purge Solenoid .........................20
Exhaust Gas Recirculation Solenoid ................21
Heated Oxygen Sensor ........................19
Idle Air Control Motor ........................21
Injectors .................................20
MAP Sensor ..............................21
Power Steering Switch ........................19
Powertrain Control Module ...........19, 20, 21, 22, 23
Throttle Position (Sensor) ......................21
Fuel Injection Ignition System (3.3L & 3.8L) .............. .24, 25, 26, 27, 28, 29
Automatic Shut Down Relay ....................29
Camshaft Position Sensor ......................28
Crankshaft Position Sensor .....................28
Data Link Connector .........................29
Direct Ignition System Coil Pack ..................24
Engine Coolant Temperature Sensor ...............25
EVAP/Purge Solenoid .........................27
Exhaust Gas Recirculation Solenoid ................26
Heated Oxygen Sensor ........................25
Idle Air Control Motor ........................26
Injectors .................................24
MAP Sensor ..............................26
Power Steering Switch ........................25
Powertrain Control Module .........24, 25, 26, 27, 28, 29
Throttle Position (Sensor) ......................26
Fuel Pump Motor .............................36
Fuel Pump Relay .............................36Wiring Diagram
Name Sheet Number
Fuel Tank Level Gauge Sending Unit .................36
Fuse Application Chart .....................1,2,3,4
Fuseblock Module ........................... .168
Fuses Fuse #1 ...............................2,66
Fuse #2 ........................2,37,43,59,66
Fuse #3 .............1,66,69,71,73,75,78,81,83,
96, 102, 105, 110
Fuse #4 .............1,66,69,71,73,75,78,81,83,
96, 102, 105, 110
Fuse #5 ................1,51,53,55,65,85,95,99,
101, 116, 119, 121, 128, 132, 136, 148
Fuse #6 .....................4,11,15,22,27,37
Fuse #7 ..................4,11,15,22,27,41,147
Fuse #8 . . .4, 11, 15, 22, 27, 57, 67, 95, 100, 102, 104, 107, 109, 128, 132, 135, 141
Fuse #9 ............3,11,57, 115, 124, 125, 148, 158
Fuse #10 ....................3,11,51,53,55,115
Fuse #11 .......................3,11,12,33,53
Fuse #12 ...................... .88, 91, 112, 159
Fuse #13 ...........................4,99,159
Fuse #14 ...............................1,64
Fuse #15 ...........2,6,7,9,57,64, 118, 126, 128, 1
32, 136, 139, 151, 160
Fuse #16 ..............................2,122
Fuse #17 .......................4, 143, 146, 148
Fuse #18 ........3,11,62, 103, 106, 108, 130, 134, 137
Fuse #19 ............................3,11,59
Fuse #20 .....................3,11, 119, 121, 126
Fuse F1-Power Distribution Center .........4,5,7,9,148
Fuse F2-Hazard Lamp ......................5,7,9
Generator ..............................6,8,10
Glove Box Module and Front Cigar Lighter ............111
Ash Receiver Lamp ........................ .111
Deck Lid Release Switch ..................... .111
Front Cigar Lighter ........................ .111
Glove Box Lamp and Switch ...................111
Hazard Flasher ..............................59
Headlamp Dimmer Switch .....................1,66
Headlamp Switch .........................1,65,66
Optical Horn/Headlamp Dimmer Switch .............66
Headlamps-Aero ..................... .69, 70, 71, 72
Headlamps-Concealed . . .73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84
Headlamp Switch Controlled Interior Lighting ...........85
Headlamp Switch Lamp .......................85
Transmission Range Lamp with Electronic Cluster .......85
Heated Oxygen Sensor ................... .14, 19, 25
Heated Rear Window ......................... .148
Heated Rear Window Switch ...................148
Rear Window Grid ......................... .148
Heated Rear Window Switch ...................4,148
Heater Bi-Lever Control Switch ....................51
Heater Blower Motor ...........................51
Heater Blower Motor Resistor .....................51
Heater System ...............................51
Bi-level Control Switch ........................51
Blower Motor ..............................51
8W - 316 WIRING DIAGRAMS AC-AY BODY Ä