1999 DODGE RAM glove box

vacuum connector. Remove heater control panel. To install, reverse
removal procedure.
HEATER CORE
Removal & Installation
Remove heater assembly from vehicle. See HEATER ASSEMBLY.
Disable heater assembly and remove heater core.
INSTRUMENT PANEL
Removal & Installation (Dakota & Durango)
1) Disconnect negative battery cable. Disable air bag system.
See AIR BAG SYSTEM SAFETY article. Place front wheels in straight-
ahead position. Remove sill trim from both doorways. Remove kick panel
covers from both sides of vehicle. Remove mounting bolts for hood
release handle.
2) Remove steering column trim panel and support bracket. If
equipped, remove tilt steering column lever. Remove upper and lower
shrouds from steering column. Remove knee bolster. Unplug driver's
side air bag module. Loosen multifunction switch wiring harness
connector screw and disconnect from switch. Screw will remain in
connector.
3) Disconnect PRNDL cable. Disconnect shift cable from
steering column. Remove steering coupler lock pin. Remove toe plate
retaining bolts. Remove steering column mounting bolts and remove
steering column from vehicle.
4) Remove screw from bulkhead wiring harness connector and
disconnect. Disconnect 2 body wiring harness connectors located next
to bulkhead connector. Disconnect 3 wiring harness connectors located
nearest to dash panel from junction block. Disconnect brake light
switch. If equipped, disconnect Rear Wheel Anti-Lock (RWAL) brake
module, located near steering column support brackets.
5) Disconnect plastic retainer clip from parking brake
linkage rod, located at back of parking brake release handle. Remove
rod end from parking brake handle. Remove instrument panel center
support bracket. Unplug vacuum harness connector located at left end
of heater assembly housing. Disconnect Air Bag Control Module (ACM)
connector.
6) Remove glove box. Reach through glove box opening and
disconnect antenna coaxial cable. Disconnect blower motor connector
located above glove box opening, near support brace for heater
assembly housing. Disconnect radio ground strap. Loosen instrument
panel roll-own bracket bolts about 2 turns (bolts are located at lower
corners, on both sides of instrument panel). Remove 5 bolts across top
of dash panel, at base of windshield, removing center screw last.
7) Roll down instrument panel and install a temporary support
hook that is about 18" (457 mm) in length. Install hook from center
hole in instrument panel to center hole of dash panel. Pull lower
instrument panel outward until both roll-down bracket bolts are in
slotted roll-down position. Instrument panel should now be supported
and away from firewall.
8) Disconnect 2 body wiring harness connectors, located on a
bracket near right end of instrument panel. Disconnect blower motor
resistor. Disconnect temperature control cable from heater assembly
housing and remove from housing. Disconnect defrost duct flexible hose
from heater assembly housing.
9) Ensure all electrical and vacuum connectors are
disconnected and instrument panel is free and clear for removal. With
the aid of an assistant, remove temporary support hook. Lift
instrument panel off of roll-down bracket bolts and remove from
vehicle.
10) To install, reverse removal procedure. Ensure all wiring

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 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.


* S YM PTO M C HEC K L IS T *

1 999 D odge P ic ku p R 1500
SYMPTOM CHECK LIST WORKSHEETS
* PLEASE READ THIS FIRST *
NOTE: This article is intended for general information purposes
only. It does not apply specifically to one make or model.
PURPOSE
Why Use the Symptom Check List Worksheets?
One of the most difficult and critical lines of communication
is between the service customer and the technician. The clearer the
technician understands the customer's concerns, the more likely the
problem will be "fixed right the first time".
The Symptom Check List Worksheets in this article are
designed to improve this communication. When used consistently, they
can be helpful in reducing shop comebacks, increasing technician
productivity, and producing satisfied customers. They also provide
other benefits:
* Reduce "No Trouble Found" problems
* Increase customer involvement
* Customer perceive that "they really care and listen"
* Save time during peak write-up periods
* Reduce recontacting customers for additional information
* Improve night drop information
* Insure all the right questions are asked at write-up
Making the Worksheets a Part of Your Normal Routine
The following information contains ideas that may be helpful
in forming habits that promote daily use of the Symptom Check Lists:
* HAVE THE SERVICE ADVISER FILL OUT THE FORM(S) WITH THE
CUSTOMER WHENEVER POSSIBLE.
* Place them in your night drop for the customer to fill out,
along with an instruction sheet to help them understand what
to do.
* Hand out the worksheets to customers while they wait in line
during the peak morning rush and ask them to fill it out. It
will save time for all concerned and improve the quality of
information received from the customer.
* Make sure it is attached to the hard copy when it goes to the
technician.
* Place a copy with the final repair papers and review it with
the customer at delivery.
* Put a new worksheet in the glovebox of all departing
customers.
* Require that you personally see a copy of all worksheets
filled out for shop comebacks.
* Hold a shop meeting to get employee buy-in and their ideas on
how to make it effective in your shop.
There are many other ways to utilize the concept, but as with
every other idea, successful implementation depends on employee
involvement and buy-in.
SYMPTOM CHECK LIST WORKSHEETS

(White/Black wire). Perform CCD BUS test. If scan tool does not
display BUS SHORT TO GROUND, repair open White/Black wire. If scan
tool displays BUS SHORT TO GROUND, replace PCM.
NOT RECEIVING BUS MESSAGES CORRECTLY
NOTE: For connector terminal identification and wiring diagrams,
see BODY CONTROL COMPUTER - INTRODUCTION article. Perform
VERIFICATION TEST VER-1 after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module
connector.
1) Disconnect anti-lock brake controller module. Controller
module is mounted to top of ABS hydraulic unit. Turn ignition on. If
scan tool displays BUS OPERATIONAL, replace anti-lock brake controller
module. If scan tool does not display BUS OPERATIONAL, go to next
step.
2) Turn ignition off and wait 2 minutes. Disconnect Air Bag
Control Module (ACM). ACM is located under center of instrument panel.\
Turn ignition on. If scan tool displays BUS OPERATIONAL, replace ACM.
If scan tool does not display BUS OPERATIONAL, go to next step.
3) Disconnect Central Timer Module (CTM). CTM is located
under left side of instrument panel. Turn ignition on. If scan tool
displays BUS OPERATIONAL, replace CTM. If scan tool does not display
BUS OPERATIONAL, replace scan tool cable or scan tool.
BUS SHORT TO 5 VOLTS
NOTE: For connector terminal identification and wiring diagrams,
see BODY CONTROL COMPUTER - INTRODUCTION article. Perform
VERIFICATION TEST VER-1 after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module
connector.
1) Turn ignition off. Disconnect Powertrain Control Module
(PCM). PCM is mounted in right side of firewall. Turn ignition on. If
scan tool does not display BUS SHORT TO 5 VOLTS, go to step 10). If
scan tool displays BUS SHORT TO 5 VOLTS, go to next step.
2) Turn ignition off. Disconnect anti-lock brake controller
module. Controller module is mounted to top of ABS hydraulic unit.
Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS,
replace anti-lock brake controller module. If scan tool displays BUS
SHORT TO 5 VOLTS, go to next step.
3) Turn ignition off. Disconnect instrument cluster. Turn
ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS,
replace instrument cluster circuit board. If scan tool displays BUS
SHORT TO 5 VOLTS, go to next step.
4) Turn ignition off. Disconnect compass mini-trip computer.
Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS,
replace compass mini-trip computer. If scan tool displays BUS SHORT TO
5 VOLTS, go to next step.
5) Turn ignition off. Disconnect CCD radio. Turn ignition on.
If scan tool does not display BUS SHORT TO 5 VOLTS, replace radio. If
scan tool displays BUS SHORT TO 5 VOLTS, go to next step.
6) Turn ignition off and wait 2 minutes. Disconnect Air Bag
Control Module (ACM). ACM is located under center of instrument panel.\
Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS,
replace ACM. If scan tool displays BUS SHORT TO 5 VOLTS, go to next
step.
7) Turn ignition off. Disconnect Central Timer Module (CTM).\
CTM is mounted behind right corner of dash, beside glove box. Turn


WIP ER /W ASH ER S YSTE M

1999 D odge P ic ku p R 1500
1999 ACCESSORIES & EQUIPMENT
CHRY - Wiper/Washer Systems
Ram Pickup
DESCRIPTION & OPERATION
A permanent magnet wiper motor is used for low, high or
intermittent (delay) wiper functions. Base intermittent (delay) wipe\
r
function provides a .5-18 second delay mode. On high-line models,
delay function is speed sensitive. At vehicle speeds greater than 10
MPH, delay mode range is 1/2-18 seconds. At vehicle speeds less than
10 MPH, delay mode doubles to 1-36 seconds.
Delay function is controlled by Central Timer Module (CTM),
located under passenger side of instrument panel, outboard of glove
box. CTM switches an intermittent wiper relay, located in Power
Distribution Center (PDC). On high line models, CTM is connected to
Chrysler Collision Detection (CCD) data bus network to receive vehicle\
speed information for delay function.
Washer system consists of rubber hoses and nozzles, an
electric pump, sealed motor, low washer fluid indicator (if equipped)
and reservoir.
ADJUSTMENTS
WIPER BLADES
With wiper arms removed, cycle wiper motor into PARK
position. Mount arms on pivot shafts, and ensure distances are as
specified. See Fig. 1. Operate wiper blades, and check whether they
return to proper position. If wiper blades do not return to this
position, check linkage and pivot assembly for wear and binding.
Fig. 1: Adjusting Wiper Blades
Courtesy of Chrysler Corp.
TROUBLE SHOOTING