1999 DODGE RAM light

cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION.
Reconnect negative battery cable. Measure voltage between ground and
terminal No. 6 (Pink/White wire) of instrument cluster connector C1.
See Fig. 1 . If battery voltage is present, reinstall instrument
cluster and go to SELF- DIAGNOSTICS. If battery voltage is not
present, repair open circuit between fuse No. 12 (15-amp) in junction
block and instrument cluster connector C1 and go to next step.
5) Remove and inspect fuse No. 11 (10-amp) in junction block\
.
If fuse is okay, go to next step. If fuse is blown, locate and repair
cause of blown fuse. Install new fuse and recheck system operation.
6) Turn ignition on. Measure voltage between ground and power
side (Dark Blue/White wire) of fuse No. 11 (10-amp) in junction bloc\
k.
If battery voltage is present, go to step 8). If battery voltage is
not present, locate and repair open circuit to fuse No. 11. See WIRING
DIAGRAMS.
7) Turn ignition off and disconnect negative battery cable.
Install instrument cluster. Connect negative battery cable. Turn
ignition on. Set parking brake and observe instrument cluster brake
warning light. If brake warning light is on, go to next step. If brake
warning light is off, go to step 9).
8) Turn ignition off. Turn parking lights on and adjust
instrument panel lights dimmer rheostat to full bright position. If
instrument panel lights are on, go to step 10). If instrument panel
lights are off, repair instrument cluster illumination ground circuit
between instrument cluster connector C2 terminal No. 7 (Black wire)
and ground. See WIRING DIAGRAMS.
9) Turn ignition off and disconnect negative battery cable.
Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL &
INSTALLATION. Connect negative battery cable. Turn ignition on.
Measure voltage between ground and terminal No. 2 (Dark Blue/White
wire) at instrument cluster connector C1. If battery voltage is
present, go to SELF-DIAGNOSTICS. If battery voltage is not present,
repair open circuit between junction block fuse No. 11 and instrument
cluster.
10) Turn ignition off and disconnect negative battery cable.
Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL &
INSTALLATION. Check continuity between ground and terminal No. 4
(Black/Dark Green wire) at instrument cluster connector C1. If
continuity exists, go to SELF-DIAGNOSTICS. If continuity does not
exist, locate and repair open in ground circuit.
SELF-DIAGNOSTICS
1) With ignition off, press and hold trip odometer RESET
button while turning ignition switch to ON position. Continue to hold
RESET button until odometer window displays CHEC (about 10 seconds).
Release RESET button. If problem exists, system will display
Diagnostic Trouble Codes (DTC). See DIAGNOSTIC CODE CHART table. For
repairs of DTCs, see appropriate BODY CONTROL COMPUTER TESTS article.
DIAGNOSTIC TROUBLE (DTC) CODE CHART







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DTC Description  Correction 




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110 Cluster CPU, RAM Or EEPROM Fault  Replace Cluster 




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900 CCD Bus Inoperative Check CCD Bus Connections At

  Cluster; Check Cluster 

  Fuses; Check CCD Bus Bias;

  Check CCD Bus Voltage; 

  Check CCD Bus Terminations 




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920 Not Receiving VSS Message From PCM Check PCM Software Level; 

   Use Scan Tool To Verify VSS

  Signal Is Sent By PCM 




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921 Not Receiving Distance Pulse  Check PCM Software Level; 

 Message From PCM  Use Scan Tool To Verify 

  Distance Pulse Message Is 

  Sent By PCM 




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940 Not Receiving Air Bag Light On Check CCD Bus Connections At

 Message From Air Bag Module  ACM; Check ACM Fuse 




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950 Not Receiving ABS Light On Message Check CCD Bus Connections 

From Anti-lock Brake Control ModuleAt Anti-Lock Control Module;

  Check Anti-Lock Control 

  Module Fuse 




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999 Undefined Error  Record Failure Message; 

  Press RESET Button To 

  Continue Self-Diagnostic 

  Test 










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\f
2) If no DTCs appear, cluster will start a walking segment
test. First, all segments will be illuminated, then each segment in
sequence. If any segment does not illuminate, repeat test to confirm
and replace instrument cluster. When walking segment test is complete,
bulb check will start.
3) If any bulb does not light, remove instrument cluster and
check bulb and bulb holder. See INSTRUMENT CLUSTER under REMOVAL &
INSTALLATION. Ensure bulb holder is properly installed in cluster. If
bulb and bulb holder are okay, replace instrument cluster. If LED does
not light, replace instrument cluster. When bulb check is complete,
gauge actuator test will start.
4) Each gauge needle should stop at 3 calibration points,
then return to relaxed position. If any gauge does not perform as
specified, remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Inspect all connections between printed
circuit board and gauge terminals, repair as necessary. If connections
are okay, replace instrument cluster. Instrument cluster will
automatically exit self-diagnostics when test is complete.

SYSTEM TESTS
NOTE: There are 2 instrument cluster connectors. These connectors
look identical. Identify connector by wire color. See WIRING
DIAGRAMS.
BRAKE WARNING LIGHT INOPERATIVE
1) Ensure parking brake is released. Turn ignition on. If
brake warning light stays on, check and repair hydraulic brake system
as necessary. See appropriate DISC & DRUM article in BRAKES section.
2) If brake warning light does not illuminate when ignition
is on, check fuse No. 17 (10-amp) on Ram Pickup or fuse No. 11 (10-
amp) on Ram Van and Ram Wagon in junction block. Junction block is
located at left end cover of instrument panel. If fuse is okay, go to
next step. If fuse is blown, locate and repair cause of blown fuse.
Install new fuse and recheck system operation.
3) Turn ignition on. Measure voltage between ground and power
side of fuse No. 17 on Ram Pickup or fuse No. 11 on Ram Van and Ram
Wagon. If battery voltage is present, go to next step. If battery
voltage is not present, locate and repair open circuit between to

junction block. See WIRING DIAGRAMS.
4) Turn ignition off. Disconnect negative battery cable.
Disconnect parking brake switch connector. Switch is located at base
of parking brake lever. Ensure parking brake lever is released. Check
continuity between ground and parking brake switch terminal. If
continuity does not exist, go to next step. If continuity exists,
adjust or replace parking brake switch.
5) Ensure parking brake switch is still disconnected. Turn
ignition off. Remove instrument cluster. See INSTRUMENT CLUSTER under
REMOVAL & INSTALLATION. Check continuity between ground and park brake
switch connector. If continuity does not exist, go to next step. If
continuity exists, repair short to ground between instrument cluster
and park brake switch.
6) Check continuity between park brake switch connector and
instrument cluster connector C1, terminal No. 3 (White/Pink wire on
Ram Van and Ram Wagon; White/Light Green wire on Ram Pickup). See
Fig. 1. If continuity does not exist, repair open circuit. See WIRING
DIAGRAMS. If continuity exists, see PRELIMINARY DIAGNOSIS under SELF-
DIAGNOSTIC SYSTEM.
FOUR WHEEL DRIVE (4WD) LIGHT INOPERATIVE (RAM PICKUP)
1) Remove and inspect fuse No. 17 (10-amp) in junction block\
.
Junction block is located at left end cover of instrument panel. If
fuse is okay, go to next step. If fuse is blown, locate and repair
cause of blown fuse. Install new fuse and recheck system operation.
2) Turn ignition on. Measure voltage between ground and power
side of fuse No. 17. If battery voltage is present, go to next step.
If battery voltage is not present, locate and repair open circuit
between ignition switch and junction block.
3) Turn ignition off. Disconnect negative battery cable.
Disconnect 4WD switch connector. 4WD switch connector is located at
right side of front axle. Check continuity between 4WD switch
connector Black wire and ground. If continuity does not exist, repair
open Black wire between 4WD switch and ground. If continuity exists,
go to next step.
4) Reconnect battery cable. Turn ignition on. Install jumper
wire between 4WD switch connector terminals. 4WD light should
illuminate. If light illuminates, replace 4WD switch. If light does
not illuminate, go to next step.
5) Turn ignition off. Disconnect negative battery cable.
Ensure 4WD switch is still disconnected. Remove instrument cluster.
See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check continuity
between ground and instrument cluster connector C2 terminal No. 10
(Gray wire). See Fig. 1. If continuity does not exist, go to next
step. If continuity exists, repair short to ground in wire between
instrument cluster and 4WD switch.
6) Check continuity of wire between 4WD switch connector and
terminal No. 10 at instrument cluster connector C2. If continuity does
not exist, repair open wire. If continuity exists, replace bulb.
LOW WASHER FLUID LIGHT INOPERATIVE
1) Remove and inspect fuse No. 17 (10-amp) on Ram Pickup or
fuse No. 11 (10-amp) on Ram Van and Ram Wagon in junction block.
Junction block is located at left end cover of instrument panel. If
fuse is okay, go to next step. If fuse is blown, locate and repair
cause of blown fuse. Install new fuse and recheck system operation.
2) Turn ignition on. Measure voltage between ground and power
side of fuse No. 14 (10-amp) on Ram Pickup or fuse No. 11 (10-amp) o\
n
Ram Van and Ram Wagon. If battery voltage is present, go to next step.
If battery voltage is not present, locate and repair open circuit
between ignition switch and junction block.

3) Turn ignition off. Disconnect washer fluid level sensor
connector. Install jumper wire between washer fluid level sensor
connector terminals. Turn ignition on. Low washer fluid level light
should illuminate. Disconnect jumper wire and light should go off. If
light performs as specified, replace washer fluid level sensor. If
light does not perform as specified, go to next step.
4) Turn ignition off. Check continuity between ground and
washer fluid level sensor connector Black wire. If continuity does not
exist, repair open Black wire between washer fluid level sensor and
ground. If continuity exists, go to next step.
5) Ensure washer fluid level sensor is still disconnected.
Turn ignition off. Remove instrument cluster. See INSTRUMENT CLUSTER
under REMOVAL & INSTALLATION. Check continuity between ground and
instrument cluster connector C2 terminal No. 2 (Black/White wire) on
Ram Pickup and terminal No. 9 (Black/Gray wire) on Ram Van and Ram
Wagon. If continuity does not exist, go to next step. If continuity
exists, repair short to ground in White/Black or Black/Gray wire
between instrument cluster and washer fluid level sensor.
6) Check continuity of Black/White wire on Ram Pickup or
Black/Gray wire on Ram Van and Ram Wagon between washer fluid level
sensor connector and instrument cluster connector C2 terminal No. 2 on
Ram Pickup or terminal No. 9 on Ram Van and Ram Wagon. See Fig. 1. If
continuity does not exist, repair open Black/White wire on Ram Pickup
or Black/Gray wire on Ram Van and Ram Wagon. If continuity exists,
replace bulb.
WAIT-TO-START LIGHT INOPERATIVE (RAM PICKUP - DIESEL)
1) Remove and inspect fuse No. 17 (10-amp) in junction block\
.
Junction block is located at left end cover of instrument panel. If
fuse is okay, go to next step. If fuse is blown, locate and repair
cause of blown fuse. Install new fuse and recheck system operation.
2) Turn ignition on. Measure voltage between ground and power
side of fuse No. 17. If battery voltage is present, go to next step.
If battery voltage is not present, locate and repair open circuit
between Power Distribution Center (PDC) and junction block.
3) Disconnect negative battery cable. Remove instrument
cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check
for battery voltage between ground and instrument cluster connector C1
terminal No. 2 (Dark Blue/White wire). See Fig. 1. Turn ignition on.
If battery voltage exists, go to next step. If battery voltage does
not exist, repair open Dark Blue/White wire between junction block and
instrument cluster.
4) Turn ignition off. Disconnect Powertrain Control Module
(PCM) White connector C2. PCM is located at firewall in right side of
engine compartment. Connector C2 is center connector. Check continuity
between ground and instrument cluster connector C1 terminal No. 8
(Orange/Black wire). If continuity does not exist, go to next step. If\
continuity exists, repair short to ground in Orange/Black wire between
instrument cluster and ground.
5) Install instrument cluster. Connect battery cable. Install
jumper wire between PCM White connector C2 terminal No. 20
(Orange/Black wire) and ground. See Fig. 2. Turn ignition on. Wait-to-
start light should illuminate. If wait-to-start light illuminates, see
appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE section. If
wait-to-start light does not illuminate, see SELF-DIAGNOSTICS.

Fig. 8: Removing Shift Indicator (Ram Van & Ram Wagon)
Courtesy of Chrysler Corp.
HEADLIGHT SWITCH
Removal & Installation (Ram Pickup)
1) Disconnect negative battery cable. Open power outlet door
and remove instrument cluster bezel retaining screw. Pry cluster bezel
from clips securing it to instrument panel. See Fig. 3. Disconnect
electrical connectors from power outlet to cluster bezel. Remove
cluster bezel.
2) Remove 3 screws and headlight switch. Disconnect
electrical connectors. Pull knob and stem to stop. Hold down button on
top of switch and remove switch. Remove 2 screws and bezel. To install
switch, reverse removal procedure.
Removal & Installation (Ram Van & Ram Wagon)
1) Disconnect negative battery cable. Turn ignition switch to
UNLOCK position and shift gear selector to "1" position. On models
equipped with tilt steering wheel, tilt wheel to lowest position. On
all models, pry cluster bezel away from clips securing it to
instrument panel. See Fig. 4. Pull left side of bezel far enough to
clear trip odometer reset button and remove bezel.
2) Remove switch bezel attaching screws. Remove switch, and
disconnect wiring harness. Pull headlight switch knob to on position.
Hold down button on top of switch and remove knob and shaft assembly.
Remove switch spanner nut and remove bezel from switch. To install
switch, reverse removal procedure.

M * Lago Alberto, Mexico
12-17 - Serial Number
* Sequential Production Number
MAINTENANCE SERVICE INFORMATION
LIGHT & HEAVY DUTY SERVICE DEFINITIONS
Maintenance service is recommended at different mileage
intervals based on Gross Vehicle Weight Rating (GVWR). See appropriate\
SERVICE SCHEDULES article.
Light Duty
Vehicles with GVWR of 8500 lbs. or less.
Heavy Duty
Vehicles with GVWR of 8501 lbs. or more.
SEVERE & NORMAL SERVICE DEFINITIONS
Service is recommended at mileage intervals based on vehicle
operation. Normal Service and Severe Service schedules are based on
the following primary operating conditions:
Normal Service
* Driven More Than 10 Miles Daily
* NO Severe Service Operating Conditions
Severe Service
NOTE: Use the Severe Service schedule if the vehicle to be serviced
is operated under ANY (one or more) of these conditions:
* Frequent Short Trips Of Less than 5 Miles (8 KM)
* Frequent Driving In Dusty Conditions
* Frequent Trailer Towing
* Frequent Idling
* More Than 50% Of Your Driving Is At Sustained High Speeds
During Hot Weather, Above 90
\bF (32\bC)
SERVICE POINT LOCATIONS

refer to the 5.9L V8 TURBO DIESEL - VIN [D] article.
in the ENGINE MECHANICAL section.
Drain fuel/water separator by pushing up on the valve
located on the bottom of the fuel filter until clear fuel
is visible. Drain fuel into a container and follow proper
disposal procedures.
CAUTION: DO NOT drain fuel/water separator when engine is running or
hot. Allow engine to cool before draining. Verify that the
WATER IN FUEL light on instrument panel is OFF.
ADDITIONAL SERVICE INFORMATION - CNG MODELS
Fig. 11: Locating CNG Components
Courtesy of Chrysler Corp.

BR3500 (8 Stud Dual Wheel)........................ 145 (195)








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BATTERY SPECIFICATIONS
Vehicle is factory equipped with a maintenance free battery.
The top of the battery is permanently sealed, and water never has to
be added, and periodic maintenance is not required either. But,
periodically check the battery terminals and battery hold-down bracket
for corrosion. Replace with a battery of the same group number as
shown on original battery's label.
CAUTION: When battery is disconnected, vehicles equipped with
computers may lose memory data. When battery power is
restored, driveability problems may exist on some vehicles.
These vehicles may require a relearn procedure. See COMPUTER
RELEARN PROCEDURES article in the GENERAL INFORMATION
section.
CAUTIONS & WARNINGS
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
NOTE: See the AIR BAGS article in the ACCESSORIES/SAFETY EQUIPMENT
Section.
Modifications or improper maintenance, including incorrect
removal and installation of the Supplemental Restraint System (SRS),
can adversely affect system performance. DO NOT cover, obstruct or
change the steering wheel horn pad in any way, as such action could
cause improper function of the system. Use only plain water when
cleaning the horn pad. Solvents or cleaners could adversely affect the
air bag cover and cause improper deployment of the system.
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all warnings and service precautions. See
appropriate AIR BAGS article in ACCESSORIES/SAFETY EQUIPMENT.
WARNING: Any maintenance performed on or near the components of the
SRS must be performed only by an authorized dealer.
Do not permit anyone else to service, inspect maintain, or
service any SRS components or wiring. Similarly, no part of
the SRS should ever be handled or disposed of by anyone
except an authorized dealer.
Improper work on the SRS components or wiring could result in
inadvertent deployment of the airbags or could render the SRS
system inoperative. Either situation could result in serious
injury
WARNING: If the car has had any front-end damage, have the SRS system
inspected by an authorized dealer to ensure it is working
properly.
WARNING: If any of the following conditions occur, the SRS is not
working properly. Immediately have it inspected by an
authorized dealer:
* The SRS warning light does not illuminate when you start
the car.
* The SRS warning light does not go off after about 7 seconds.
* The SRS warning light illuminates while driving.