1999 DODGE RAM fuse

terminals. See Fig. 1. Select 10-amp scale.
3) Turn off all electrical accessories. Turn off interior
lights, underhood lamp, trunk light, illuminated entry, etc. To avoid
damaging ammeter or obtaining a false meter reading, all accessories
must be off before turning test switch knob to OFF position.
4) Turn test switch knob to OFF position to allow current to
flow through ammeter. If meter reads wrong polarity, turn test switch
to ON position and reverse leads. Turn test switch to OFF position.
Observe current reading. If reading is less than 2 amps, turn test
switch to ON position to keep electrical circuits powered-up.
5) Select low amp scale. Switch lead to the correct meter
position. Turn test switch to OFF position and compare results to
normal current draw. See the GENERAL MOTORS PARASITIC LOAD TABLE . If
current draw is unusually high for the vehicle's overall electrical
system, remove system fuses one at a time until current draw returns
to normal.
6) Turn test switch to ON position each time door is opened
or fuse is removed. Turn switch to OFF position to read current draw
value through meter. When the cause of excessive current drain has
been located and repaired, remove test switch and reconnect negative
battery cable to the negative battery terminal.
Fig. 1: Connecting Kent-Moore Disconnect Tool (J-38758)
Courtesy of General Motors Corp.
GENERAL MOTORS PARASITIC LOAD TABLE (MILLIAMPS)









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SEA TS - P O W ER

1999 D odge P ic ku p R 1500
1999 ACCESSORIES & EQUIPMENT
CHRY - Power Seats
Ram Pickup, Ram Van & Ram Wagon
DESCRIPTION & OPERATION
Driver's power seat can be adjusted in 6 different
directions: up, down, forward, back, tilt forward, or tilt rearward.
The power seat system consists of a 6-way switch, motor assembly, seat
adjuster, motor cable, housing and wiring harness.
The power seat system receives battery power through circuit
breaker and a fuse in the Power Distribution Center (PDC). Battery
voltage is available to power seat system at all times. Three
permanent magnet reversible motors are coupled through cables to worm
gear box assemblies located in the seat tracks, providing the various
seat movements.
On Ram Pickup with extended cab (club cab and quad cab),
driver's seat also includes power operated lumbar support. Lumbar
support can be inflated or deflated as needed, using additional
switch. On seats with lumbar support, seat back remains at same
height, while seat cushion raises and lowers. On seats without lumbar
support, entire seat raises and lowers. On all seats, entire seat
moves forward and backward.
TROUBLE SHOOTING
NOTE: Before any testing is attempted, the battery should be fully
charged and all connections and terminals cleaned and
tightened to ensure proper continuity and chassis grounds.
POWER SEAT INOPERATIVE
With dome light on, apply power seat switch in direction of
failure. If dome light dims, power seat may be jamming. Check for
binding or obstructions. If dome light does not dim, check individual
components. See COMPONENT TESTS.
COMPONENT TESTS
HARNESS VOLTAGE TEST
NOTE: This test will determine whether or not voltage is continuous
through body harness to power seat switch.
1) Remove power seat switch from mounting position and
disconnect switch from wiring harness. See POWER SEAT SWITCH under
REMOVAL & INSTALLATION.
2) Connect test light lead to ground terminal (Black wire on
Ram Van and Ram Wagon; Black/Orange wire on Ram Pickup) at power seat
switch harness connector. Using test light, probe power supply wire
(Red/Light Blue wire) at power seat switch harness connector.
3) If test light comes on, power and ground circuits to power
seat switch are good. If test light does not come on, check ground
circuit. See WIRING DIAGRAMS. Repair as necessary. If ground circuit
is okay, check power supply. See CIRCUIT BREAKER. Check ground circuit
for continuity.

CIRCUIT BREAKER
1) Circuit breaker is located in fuse block. On Ram Van and
Ram Wagon, fuse block is located under glove box door. On Ram Pickup,
fuse block is located at extreme left end of instrument panel under
protective cover. On all models, pull circuit breaker outward
slightly, ensuring circuit breaker terminals still contact terminals
in fuse block. Connect negative voltmeter lead to ground. With
positive lead, check each terminal of circuit breaker for voltage.
2) If battery voltage exists at both terminals, circuit
breaker is good. If battery voltage exists at only one terminal,
circuit breaker is defective. Replace circuit breaker. If battery
voltage does not exist at either terminal, check for open or shorted
circuit to fuse box. Repair as necessary.
MOTOR
1) Operate power seat switch to move all 3 seat motors. Seat
should move in all directions. If one or more motors operate, see
POWER SEAT SWITCH. If no motors operate, go to next step.
2) Check circuit breaker in fuse block. See CIRCUIT BREAKER.
If circuit breaker is good, go to next step. If circuit breaker is
faulty, replace circuit breaker and retest system.
3) Remove power seat switch. See POWER SEAT SWITCH under
REMOVAL & INSTALLATION. Check for battery voltage at power supply (Red
wire on Ram Van and Ram Wagon; Red/Light Blue wire on Ram Pickup). If
battery voltage exists, go to next step. If battery voltage does not
exist, repair open in wire.
4) Check for continuity between switch connector ground
circuit (Black wire on Ram Van and Ram Wagon; Black/Orange wire on Ram
Pickup) and ground. If continuity exists, go to next step. If
continuity does not exist, repair open in wire.
5) Test power seat switch. See POWER SEAT SWITCH. Replace
switch as necessary and retest system. If switch tests good, check
wiring harness between switch connector and motor. Repair as
necessary. If wiring is okay, replace defective power seat
adjuster/motors assembly.
POWER SEAT SWITCH
Remove switch from mounting position. See POWER SEAT SWITCH
under REMOVAL & INSTALLATION. Using an ohmmeter, check continuity
between power seat switch terminals as indicated. See POWER SEAT
SWITCH CONTINUITY TEST (RAM PICKUP) or POWER SEAT SWITCH CONTINUITY
TEST (RAM VAN & RAM WAGON) table. See Fig. 1 or 2. If continuity does
not exist as specified, replace switch. If continuity exists as
specified, switch is okay.
Fig. 1: Testing Power Seat Switch Terminals (Ram Pickup)
Courtesy of Chrysler Corp.

STE ER IN G C O LU M N

1999 D odge P ic ku p R 1500
1998-99 STEERING
CHRY - Steering Columns - Trucks & Vans
Caravan, Dakota, Durango, Ram Pickup, Ram Van/Wagon,
Town & Country, Voyager
WARNING: All models are equipped with Air Bag Restraint System (ABRS).
See AIR BAG PRECAUTIONS before working on vehicle. Use
caution when working around steering column (air bag could
deploy).
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION
before disconnecting battery.
DESCRIPTION & OPERATION
All models use collapsible steering columns with an integral
ignition switch and locking device. See Fig. 1. Optional tilt wheel is
available.
AIR BAG PRECAUTIONS
Follow precautions when working with air bag systems:
* When performing air bag repairs, disable ABRS. See AIR BAG
DISABLING.
* Use caution when handling a sensor. Never strike or jar a
sensor. All sensors or mounting bracket bolts must be
carefully torqued to ensure proper sensor operation.
* Never apply power to ABRS if a sensor is not rigidly attached
to vehicle.
* To avoid accidental air bag deployment while trouble shooting
ABRS, DO NOT use electrical test equipment, such as AC
-powered or battery-powered voltmeter, ohmmeter, etc.
* Always carry air bag module with trim cover away from body.
Always place inflatable module on workbench with trim cover
up, away from loose objects.
* DO NOT install used air bag parts from another vehicle. Use
NEW parts only. DO NOT disassemble or tamper with air bag
assembly.
* Wait at least 2 minutes after disconnecting battery before
proceeding with repairs or trouble shooting system. For a
short time after battery is disconnected, ABRS retains enough
voltage to deploy air bag.
NOTE: For additional information, see appropriate AIR BAG RESTRAINT
SYSTEMS article in ACCESSORIES & EQUIPMENT section.
AIR BAG DISABLING
Disconnect and isolate negative battery cable. Disconnect 2-
way yellow clockspring harness connector, located on top of fuse block
between clockspring and instrument panel wiring harness. Clockspring
connector may also be disconnected at Air Bag System Diagnostic Module
(ASDM).

STE ER IN G C O LU M N S W IT C HES
1999 D odge P ic ku p R 1500
1999 ACCESSORIES & EQUIPMENT
CHRY - Steering Column Switches
Dakota, Durango & Ram Pickup
WARNING: Deactivate air bag system before performing any service
operation involving steering column components. See
appropriate AIR BAG RESTRAINT SYSTEMS article. DO NOT apply
electrical power to any component on steering column without
first disconnecting air bag module. Air bag may deploy. Wait
at least 2 minutes after disconnecting negative battery cable
before servicing air bag system. System reserve capacitor,
integral to ACM, maintains air bag system voltage for about 2
minutes after battery is disconnected. Servicing air bag
system before 2-minute period may cause accidental air bag
deployment and possible personal injury.
DESCRIPTION
Turn signal, hazard flasher, headlight beam selector,
headlight flash-to-pass, windshield wipe, pulse wipe and windshield
wash systems use a common switch assembly (multifunction switch)
mounted within upper steering column housing.
Ignition switch and lock cylinder are incorporated into an
assembly attached to side of steering column. Ignition switch assembly
can be serviced as a separate unit, but requires removal of lock
cylinder.
COMPONENT LOCATIONS
COMPONENT LOCATIONS








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Component Location
Combination Flasher Relay ........................... Junction Block
Horn ............................... In Right Front Corner Of Engine
Compartment
Horn Relay ............................ In Power Distribution Center
Junction Block ................. Under Left Side Of Instrument Panel
Power Distribution Center ...... In Left Side Of Engine Compartment,
On Left Inner Panel
Relay/Flasher Module ........ Under Right Side Of Instrument Panel,
Behind Glove Box









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TROUBLE SHOOTING
TURN SIGNAL AND HAZARD FLASHER SYSTEM
Bulbs Burn Out Rapidly
Check charging system. See appropriate GENERATORS &
REGULATORS article in STARTING & CHARGING SYSTEMS.
Hazard Flashers Inoperative
Blown fuse. Faulty hazard flasher. Open circuit in feed wire
to hazard switch. Faulty turn signal/hazard switch. Open or grounded
circuit in wiring to external lights.

Hazard Warning Lights Okay To Front Lights Only
Faulty external bulbs. Faulty contact in turn signal/hazard
switch. Open circuit between hazard switch and turn signal switch.
Open or grounded circuit in wiring to rear lights.
Hazard Warning Lights Okay To Rear Lights Only
Faulty external bulbs. Faulty contact in turn signal/hazard
switch. Open or grounded circuit in wiring to front lights.
Indicator Light Inoperative, External Lights Okay
Burned-out indicator bulb in instrument cluster. Faulty
contact. Open circuit.
Indicator Light Okay, External Lights Inoperative
Open circuit in wiring to external light(s).
Indicator Light Okay, External Lights Glow Dimly Or Do Not
Flash
Loose or corroded external light connections. Poor ground
circuit at external light(s).
Turn Signals Do Not Cancel After Turn
Broken canceling pawl on turn signal switch. Improperly
aligned canceling cam. Broken or loose canceling cam.
Turn Signals Inoperative (Both Sides)
Blown fuse. Faulty turn signal flasher. Loose bulkhead
connector. Loose or faulty rear wiring harness or terminals. Open
circuit to turn signal flasher. Open circuit in feed wire to turn
signal switch. Faulty switch connections. Open or grounded circuit in
wiring to external lights.
Turn Signal Inoperative (One Side)
Faulty external bulb. Poor ground at external light. Open
circuit in wiring to external light(s). Faulty turn signal/hazard
switch.
COMPONENT TESTS
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION
before disconnecting battery.
NOTE: For additional testing procedures, see appropriate CRUISE
CONTROL SYSTEMS and WIPER/WASHER SYSTEMS articles.
NOTE: For component locations, see COMPONENT LOCATIONS.
HORN RELAY
1) Remove horn relay from Power Distribution Center (PDC).
Use label on PDC cover to identify and locate relay. Check continuity
between relay terminals No. 87A and 30. See Fig. 1. If continuity does
not exist, replace relay. If continuity exists, go to next step.
2) Check continuity between relay terminals No. 30 and 87. If
continuity exists, replace relay. If continuity does not exist, check
resistance between relay terminals No. 85 and 86. If resistance is not
70-80 ohms, replace relay. If resistance is 70-80 ohms, go to next
step.
3) Using jumper wires, connect positive battery voltage to

switch connector. See Fig. 4. If continuity does not exist, repair
open Black/Red wire. If continuity exists, go to next step.
3) Check continuity between ground and Black/Red wire at
steering column horn switch connector. If continuity does not exist,
go to next step. If continuity exists, repair short to ground in
Black/Red wire.
4) Continuity between horn switch terminal and ground.
Continuity should exist with horn switch depressed. Continuity should
not exist without horn switch depressed. If continuity is not as
specified, replace horn switch. If continuity is as specified, install
horn relay and go to HORN under COMPONENT TESTS.
TURN SIGNAL & HAZARD WARNING SYSTEMS
1) If bulbs burn out rapidly, check charging system for
overcharging condition. See appropriate GENERATORS & REGULATORS
article in STARTING & CHARGING SYSTEMS. If charging system is okay, go
to next step. If charging system is not okay, repair as necessary.
2) If problem is turn signals failing to cancel after a turn,
inspect multifunction switch or cancelling cam lobes on clockspring
for damage or improper installation. If problem exists, repair as
necessary. If problem does not exist, go to next step.
3) Turn ignition on. Actuate turn signal switch or hazard
warning switch. Observe turn signal indicator light(s) in instrument
cluster. If flash rate is very high, check for a bulb that is not lit
or is dimly lit. Repair circuit or replace bulb as necessary. If turn
signals fail to light, go to next step.
4) Turn ignition off. Check turn signal fuse in junction
block and/or hazard warning fuse in PDC. If fuses are okay, go to next
step. If either fuse is blown, repair short circuit and replace fuse.
5) Check for battery voltage at hazard warning fuse in PDC.
Turn ignition on. Check for battery voltage at turn signal fuse in
junction block. If battery voltage exists, go to next step. If battery
voltage does not exist, repair open circuit to battery or ignition
switch as necessary.
6) Turn ignition off. Disconnect negative battery cable.
Remove combination flasher from junction block and replace with a
known good unit. Connect battery cable and test operation of turn
signal and hazard warning systems. If operation is okay, discard
faulty flasher. If operation is not okay, go to next step.
7) Turn ignition on. Check for battery voltage at combination
flasher terminals No. 51 and 48 in junction block. If battery voltage
exists, go to next step. If battery voltage does not exist, repair
open circuit to fuse in junction block or PDC as necessary.
8) Disconnect negative battery cable. Check continuity
between combination flasher terminal No. 50 and ground. If continuity
exists, go to next step. If continuity does not exist, repair open
ground circuit.
9) Disconnect multifunction switch harness connector. Check
continuity between junction block terminal No. 4 and multifunction
switch terminal No. 13 (Pink wire). If continuity exists, go to next
step. If continuity does not exist, repair open in Pink wire between
multifunction switch and junction block.
10) Check continuity between junction block terminal No. 13
and multifunction switch terminal No. 17 (Red/White wire). If
continuity exists, test multifunction switch. See MULTIFUNCTION SWITCH
under COMPONENT TESTS. If continuity does not exist, repair open in
Red/White wire between junction block and multifunction switch.
REMOVAL & INSTALLATION
WARNING: Deactivate air bag system before performing any service

Some conditions indicate that a service or part replacement
is suggested because the part is close to the end of its useful life
or addresses a customer's need, convenience or request. If a
customer's vehicle has one of these conditions, the procedure may be
only to suggest service.
Example:
An exhaust pipe is rusted, corroded or weak, but no leaks are
present. In this case, the exhaust pipe has not failed.
However, there is evidence that the pipe may need replacement
in the near future. Replacement of the pipe may be suggested
for the customer's convenience in avoiding a future problem.
Example:
The customer desires improved ride and/or handling, but the
vehicle's shocks or struts have not failed. In this case,
replacement may be suggested to satisfy the customer's
wishes. In this case, replacement of the shocks or struts may
not be sold as a requirement.
A customer, of course, has the choice of whether or not a
shop will service his or her vehicle. He or she may decide not to
follow some of your suggestions. When a repair is required, a MAP shop
must refuse partial service on that system if, in the judgment of the
service provider, proceeding with the work could create or continue an
unsafe condition. When a procedure states that required or suggested
repair or replacement is recommended, the customer must be informed of
the generally acceptable repair/replacement options whether or not
performed by the shop.
When presenting suggested repairs to the customer, you must
present the facts, allowing the customer to draw their own conclusions
and make an informed decision about how to proceed.
The following reasons may be used for required and suggested
services. These codes are shown in the "Code" column of the MAP
Uniform Inspection & Communications Standards that follow:
Reasons to Require Repair or Replacement
A - Part no longer performs intended purpose
B - Part does not meet a design specification (regardless of
performance)
C - Part is missing
NOTE: When a repair is required, the shop must refuse partial
service to the system in question, if the repair creates
or continues an unsafe condition.
Reasons to Suggest Repair or Replacement
1 - Part is close to the end of its useful life (just above
discard specifications, or weak; failure likely to occur
soon, etc.)
2 - To address a customer need, convenience, or request (to
stiffen ride, enhance performance, eliminate noise,
etc.)
3 - To comply with maintenance recommended by the vehicle's
Original Equipment Manufacturer (OEM)
4 - Technician's recommendation based on substantial and
informed experience
NOTE: Suggested services are always optional. When presenting
suggested repairs to the customer, you must present