Distributor DODGE RAM 1999 Service Repair Manual

"B" ABBREVIATION TABLE

"B" ABBREVIATION TABLE
ABBREVIATION DEFINITION B/P Backpressure BAC By-Pass Air Control BAP Barometric Absolute Pressure Sensor BARO Barometric BBDC Before Bottom Dead Center BCM Body Control Module BDC Bottom Dead Center BHP Brake Horsepower BLK Black BLU Blue BMAP Barometric & Manifold Absolute Pressure
Sensor BOO Brake On-Off Switch BP Barometric Pressure sensor BPS Barometric Pressure sensor BPT Backpressure Transducer BRN Brown BTDC Before Top Dead Center BTU British Thermal Unit BVSV Bimetallic Switching Valve Baro. Barometric Batt. Battery Bbl. Barrel (Example:4-Bbl.) Blst. Ballast Blwr. Blower Brkr. Breaker

"C" ABBREVIATION TABLE

"C" ABBREVIATION TABLE
ABBREVIATION DEFINITION C Celsius (Degrees) C(3) Computer Controlled Coil Ignition C(4) Computer Controlled Catalytic Converter CANP Canister Purge solenoid CARB California Air Resources Board CAT Catalytic Converter CB Circuit Breaker CBD Closed Bowl Distributor CBVV Carburetor Bowl Vent valve cc Cubic Centimeter CCC Computer Command Control CCD Computer Controlled Dwell CCM Central Control Module CCO Converter Clutch Override CCOT Cycling Clutch Orifice Tube CCW Counterclockwise CDI Capacitor Discharge Ignition CEC Computerized Engine Control CFI Central Fuel Injection CID Cubic Inch Displacement CID Cylinder Identification sensor CIS Continuous Injection System CIS-E Continuous Injection System-Electronic

"C" ABBREVIATION TABLE (con’t)
ABBREVIATION DEFINITION CKT Circuit CLR Clear CNG Compressed Natural Gas CO Carbon Monoxide CO2 Carbon Dioxide CONV Convertible CP Canister Purge CPA Connector Position Assurance CPS Crank Position Sensor CTS Coolant Temperature Sensor CV Check Valve Constant Velocity CVC Constant Vacuum Control CW Clockwise CYL Cylinder Calif. California Carb. Carburetor Chrg. Charging Circ. Circuit Cntrl. Control Comp. Compressor or Compartment Conn. Connector Cont. Continued Conv. Convertible or Converter Cu. In. Cubic Inch Cyl. Cylinder

"D" ABBREVIATION TABLE

"D" ABBREVIATION TABLE


ABBREVIATION DEFINITION "D" Drive DBC Dual Bed Catalyst DC Direct Current or Discharge DDD Dual Diaphragm Distributor DERM Diagnostic Energy Reserve Module DFI Digital Fuel Injection DIC Driver Information Center DIS Direct Ignition System DIS Distributorless Ignition System DIST Distribution DISTR Distributor DK BLU Dark Blue DK GRN Dark Green DME Digital Motor Electronics (Motronic
System) DOHC Double Overhead Cam DOT Department of Transportation DP Dashpot DRB-II Diagnostic Readout Box DVOM Digital Volt/Ohm Meter (see VOM) Def. Defogger or Defroster Def. Defrost Defog. Defogger Diag. Diagnostic Dist. Distributor or Distribution Dr. Door

"E" ABBREVIATION TABLE

“E” ABBREVIATION TABLE
ABBREVIATION DEFINITION EAC Electric Assist Choke _ EACV Electric Air Control Valve _ EBCM Electronic Brake Control Module ECA Electronic Control Assembly ECAT Electronically Controlled Automatic
Transaxle ECM Electronic Control Module ECT Engine Coolant Temperature Sensor ECU Electronic Control Unit or Engine Control
Unit EDF Electric Drive Fan relay assembly EDIS Electronic Distributorless Ignition System EEC Electronic Engine Control EECS Evaporative Emission Control System EEPROM Electronically Erasable PROM EFE Early Fuel Evaporation _ EFI Electronic Fuel Injection _ EGO Exhaust Gas Oxygen sensor (see HEGO) EGR Exhaust Gas Recirculation system _ EGRC EGR Control solenoid or system _ EGRV EGR Vent solenoid or system _ EMR Emission Maintenance Reminder Module ESA Electronic Spark Advance _ ESC Electronic Spark Control _ EST Electronic Spark Timing _ ETR Emergency Tensioning Retractor _ EVAP Fuel Evaporative System _ EVIC Electronic Vehicle Information Center EVO Electronic Variable Orifice _ EVP EGR Valve Position Sensor _ EVR EGR Valve Regulator _ EVRV Electronic Vacuum Regulator Valve Elect. Electronic _ Eng. Engine _ Evap. Evaporative _ Exc. Except _

"F" ABBREVIATION TABLE

"F" ABBREVIATION TABLE
ABBREVIATION DEFINITION F Fahrenheit (Degrees) F/B Fuse Block FBC Feedback Carburetor FI Fuel Injector or Fuel Injection FICD Fast Idle Control Device FIPL Fuel Injector Pump Lever FP Fuel Pump FPM Fuel Pump Monitor FPR-VSV Fuel Pressure Regulator Vacuum Switching
Valve FWD Front Wheel Drive Fed. Federal Ft. Lbs. Foot Pounds


D - A D JU STM EN TS - C NG & G ASO LIN E

1999 D odge P ic ku p R 1500
1999 ENGINE PERFORMANCE
CHRY - On-Vehicle Adjustments - Trucks & RWD Vans - CNG & Gas
Dakota, Durango, Ram Pickup, Ram Van, Ram Wagon
ENGINE MECHANICAL
Before performing any on-vehicle adjustments to fuel or
ignition systems, ensure engine mechanical condition is okay.
VALVE CLEARANCE
NOTE: All engines use hydraulic lifters. No adjustments are
required.
IGNITION TIMING
On all models, ignition timing is controlled by Powertrain
Control Module (PCM). Ignition timing is nonadjustable. DO NOT attempt\
to adjust ignition timing by rotating distributor.
NOTE: On Dakota 3.9L, 5.2L and 5.9L, Durango, Ram Pickup, Ram Van
and Ram Wagon, if distributor is rotated, fuel system
synchronization will be changed. If distributor is removed or
rotated, check fuel system synchronization. See procedures
under FUEL SYSTEM SYNCHRONIZATION under FUEL SYSTEM.
FUEL SYSTEM
FUEL SYSTEM SYNCHRONIZATION
NOTE: Fuel system synchronization is controlled by position of the
distributor. Rotating distributor WILL NOT change ignition
timing, but will change fuel system synchronization. Fuel
system synchronization should be checked anytime distributor
is removed or rotated.
Dakota 3.9L, 5.2L & 5.9L, Durango, Ram Pickup, Ram Van & Ram
Wagon
1) Connect scan tool to Data Link Connector (DLC). DLC is
located below driver's side of instrument panel, near steering column.
See Fig. 1 , 2 or 3.
2) Using scan tool manufacturer's instructions, access SET
SYNC display on scan tool. Following scan tool displays, start engine.
Warm engine to normal operating temperature. Vehicle must be in closed
loop. With engine idling, if scan tool displays IN RANGE along with
0
, this indicates correct distributor location. The degree reading
displayed on scan tool indicates the fuel synchronization, not
ignition timing.
3) If scan tool display is correct, shut engine off. Remove
scan tool. If scan tool does not display IN RANGE along with 0
, go to
next step.
4) If scan tool displays a plus (+) or minus (-) sign next\
to
the degree number, and/or the degree number displayed is not zero,
loosen but DO NOT remove distributor hold-down bolt.
5) Rotate distributor until scan tool displays IN RANGE.
Continue to rotate distributor until a reading as close as possible to

0 is obtained. Tighten distributor hold-down bolt to 16 ft. lbs. (22
N.m). Shut engine off. Remove scan tool.
Fig. 1: Locating Data Link Connector (DLC) (Dakota & Durango)
Courtesy of Courtesy of Chrysler Corp.
Fig. 2: Locating Data Link Connector (DLC) (Ram Pickup)
Courtesy of Courtesy of Chrysler Corp.

NO-START TESTS
NO-START TESTING PROCEDURES
For no-start testing procedures, see TEST NS-1A in SELF-
DIAGNOSTICS - JEEP, TRUCKS & RWD VANS article.
IDLE SPEED & IGNITION TIMING
Idle speed and mixture are controlled by Powertrain Control
Module (PCM). No adjustment is required. PCM controls Idle Air Control\
(IAC) motor for proper idle speed. See TEST TC-25A in SELF-DIAGNOSTICS\
- JEEP, TRUCKS & RWD VANS article.
Ignition timing is controlled by PCM and is nonadjustable. If
vehicle is equipped with a distributor, DO NOT attempt to adjust
timing by rotating distributor. If distributor is rotated, fuel system
synchronization will be changed. If distributor is rotated or removed,
check fuel system synchronization. See FUEL SYSTEM SYNCHRONIZATION
under FUEL SYSTEM in ON-VEHICLE ADJUSTMENTS - TRUCKS & RWD VANS - CNG
& GASOLINE article.
SUMMARY
If no faults were found while performing basic diagnostic
procedures, proceed to SELF-DIAGNOSTICS - JEEP, TRUCKS & RWD VANS
article. If no diagnostic trouble codes are found in self-diagnostics,
proceed to TROUBLE SHOOTING - NO CODES - GASOLINE article for
diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.) or
intermittent diagnostic procedures.

* ONE GAUGE NOT OPERATING PROPERLY
OVERHEAD CONSOLE CONCERNS
* AVERAGE MPH/FUEL ECON INOPERATIVE OR WRONG (CMTC FAILS TO
RESPOND TO INSTRUMENT CLUSTER DIMMING, DISTANCE TO EMPTY
INOPERATIVE OR WRONG, ELAPSED TIME INOPERATIVE/WRONG, SWITCH
ON CMTC INOPERATIVE, TRIP ODOMETER INOPERATIVE/WRONG)
* CMTC DISPLAY SHOWS FAILED
* CMTC SEGMENTS FAIL TO LIGHT UP
* INCORRECT READING BEYOND +/- 5
* REPAIRING "OC" IN CMTC DISPLAY
* REPAIRING "SC" IN CMTC DISPLAY
POWER DOOR LOCK SYSTEM
* DOOR LOCK SWITCH FAILURE (PDL)
* DOOR UNLOCK SWITCH FAILURE (PDL)
* AUTOMATIC (ROLLING) DOOR LOCKS INOPERATIVE
* DOORS LOCK WITH KEY IN IGNITION & LEFT DOOR OPEN
* ONE OR ALL DOORS FAILING TO LOCK FROM ONE SWITCH (ONE OR ALL
DOORS FAILING TO UNLOCK FROM ONE SWITCH)
* REMOTE KEYLESS ENTRY PROBLEM
VEHICLE THEFT/SECURITY SYSTEM
* DOOR DISARM SWITCH FAILURE
* DOOR LOCK SWITCH FAILURE
* DOOR UNLOCK SWITCH FAILURE
* EEPROM CHECKSUM FAILURE
* INTERNAL ROM TEST FAILURE
* IDENTIFYING VTSS PROBLEMS
WINDSHIELD WIPER SYSTEM
* WIPER PARK SWITCH FAILURE
* INTERMITTENT WIPERS INOPERATIVE
* NO WIPER ACTUATION AFTER WASH BUTTON PUSHED
* WIPER SPEED SENSITIVE FEATURE INOPERATIVE
CHIME SYSTEM
CHIME INOPERATIVE WITH EXTREME COOLANT TEMPERATURE
NOTE: For connector terminal identification and wiring diagrams,
see BODY CONTROL COMPUTER - INTRODUCTION article. Perform
VERIFICATION TEST VER-1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to
disconnecting any module connector.
1) Using scan tool, actuate chime. If chime sounds, go to
next step. If chime does not sound, replace Central Timer Module
(CTM). CTM is located under left side of instrument panel.
2) Using scan tool, read Powertrain Control Module (PCM)
DTCs. If no engine coolant temperature related codes exist, go to next
step. If engine coolant temperature related codes exist, see
appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE section.
3) Due to difficult access of coolant temperature sensor, Oil
Pressure Switch (OPS) will be used to verify CCD bus message from PCM.\
Disconnect OPS connector. OPS is located near bottom of distributor.

disconnecting any module connector.
1) Disconnect Oil Pressure Switch (OPS). OPS is located near\
bottom of distributor. Connect a jumper wire between OPS connector
terminals. Start engine and allow to idle for 20 seconds. Increase
engine speed to 1600 RPM. If chime sounds, go to next step. If chime
does not sound, go to step 3).
2) Turn ignition on. Using scan tool, actuate chime. If chime
does not sound, replace Central Timer Module (CTM). CTM is located
under left side of instrument panel. If chime sounds, system is
currently functioning properly.
3) Using scan tool, access CLUSTER MONITOR. With engine
running, read CCD oil pressure. If scan tool reading does not match
instrument cluster reading, replace instrument cluster. If scan tool
reading matches instrument cluster reading, go to next step.
4) Remove jumper wire. Connect a jumper wire between ground
and OPS connector Gray wire. Start engine and allow to idle for 20
seconds. Increase engine speed to 1600 RPM. If chime sounds, repair
open ground circuit between OPS connector and ground. If chime does
not sound, go to next step.
5) Turn ignition on. Using scan tool, actuate chime. If chime
does not sound, replace Central Timer Module (CTM). CTM is located
under left side of instrument panel. If chime sounds, go to next step.
6) Remove instrument cluster. See appropriate INSTRUMENT
PANELS article. Disconnect CTM 14-pin Green connector C1. Using an
external ohmmeter, measure resistance of Dark Blue/Red wire between
CTM 14-pin Green connector C1 terminal No. 2 and instrument cluster
10-pin connector C2 terminal No. 7. If resistance is less than 5 ohms,
replace CTM. If resistance is 5 ohms or more, repair open Dark
Blue/Red wire.
CHIME SOUNDS WITH DRIVER DOOR OPEN
NOTE: For connector terminal identification and wiring diagrams,
see BODY CONTROL COMPUTER - INTRODUCTION article. Perform
VERIFICATION TEST VER-1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to
disconnecting any module connector.
1) Ensure all interior and exterior lights are off. Remove
ignition key and open driver's door. If chime does not sound, system
is currently functioning correctly. If chime sounds, go to next step.
2) Using scan tool, read key-in ignition chime state. If scan
tool displays KEY-IN IGNITION CHIME STATE: "ON/OFF", go to next step.
If scan tool does not display KEY-IN IGNITION CHIME STATE: "ON/OFF",
replace Central Timer Module (CTM). CTM is located under left side of
instrument panel.
3) Disconnect key-in ignition switch connector. See Fig. 1.
Using scan tool, read key-in ignition chime state. If scan tool
displays KEY-IN IGNITION CHIME STATE: ON, go to next step. If scan
tool does not display KEY-IN IGNITION CHIME STATE: ON, replace
ignition switch. See appropriate STEERING COLUMN SWITCHES article.
4) Turn ignition off. Disconnect Central Timer Module (CTM).\
CTM is located under left side of instrument panel. Remove ignition
key. Ensure all lights and accessories are off. Close all doors. Using
external ohmmeter, measure resistance between ground and terminal No.
9 (Light Blue wire) on CTM Green connector "A". If resistance is less
than 10 ohms, repair Light Blue wire between CTM and ignition switch
for short to ground. If resistance is 10 ohms or more, replace CTM.
DOOR AJAR SYSTEM

circuit.
ONE GAUGE NOT OPERATING PROPERLY
NOTE: For connector terminal identification and wiring diagrams,
see BODY CONTROL COMPUTER - INTRODUCTION article. Perform
VERIFICATION TEST VER-1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to
disconnecting or connecting any module connector.
1) Push and hold RESET button while cycling ignition key; ON-
OFF-ON. Instrument cluster self-test will start. If inoperative gauge
reached proper calibration point, go to next step. If inoperative
gauge did not reach proper calibration point, replace instrument
cluster.
2) Stop instrument cluster self-test. If problem is with
speedometer, go to next step. If problem is with oil pressure gauge,
go to step 5). If problem is with temperature gauge, go to step 14).
If problem is with fuel level gauge, go to appropriate SELF-
DIAGNOSTICS article in ENGINE PERFORMANCE section and review
powertrain symptoms. If problem is with volt gauge, go to step 16). If
problem is with tachometer, go to step 18).
3) Using scan tool, select BODY, SYSTEMS TESTS then PCM
MONITOR. If scan tool displays PCM ACTIVE ON BUS, go to next step. If
scan tool does not display PCM ACTIVE ON BUS, go to appropriate
VEHICLE COMMUNICATIONS article.
4) Raise and support all wheels. Start engine and place gear
selector in drive. Using scan tool, select MIC, MONITORS then CCD BUS
ENGINE INFO. Read VSS. If vehicle speed on scan tool matches
speedometer, see appropriate ANTI-LOCK BRAKE article. If vehicle speed
on scan tool does not match speedometer, replace instrument cluster
circuit board.
5) Turn ignition on. If CHECK GAUGES light illuminated, go to
next step. If CHECK GAUGES light did not illuminate, go to step 11).
6) Turn ignition off. Inspect oil level. If oil level is
within specification, go to next step. If oil level is not within
specification, adjust oil level and retest.
7) Turn ignition on. Disconnect engine Oil Pressure Switch
(OPS) connector. OPS is located near bottom of distributor. If CHECK
GAUGES light went out, go to next step. If CHECK GAUGES light did not
go out, go to step 10).
8) Remove OPS. Connect mechanical oil pressure gauge to OPS
port. Start engine. If engine oil pressure at idle is 4 psi or more,
go to next step. If engine oil pressure at idle is less than 4 psi,
repair mechanical engine problem.
9) Run engine to reach normal operating temperature. If
engine oil pressure at idle is 4 psi or more, replace OPS. If engine
oil pressure at idle is less than 4 psi, repair mechanical engine
problem.
10) Turn ignition off. Disconnect PCM White connector C2. PCM
is located in engine compartment on right inner fender. Using an
external ohmmeter, measure resistance between ground and PCM Black
connector terminal No. 23 (Gray/Orange wire). If resistance is less
than 5 ohms, repair short to ground in Gray/Orange wire. If resistance
is 5 ohms or more, replace PCM.
11) Disconnect engine Oil Pressure Switch (OPS) connector.
OPS is located near bottom of distributor. Using an external ohmmeter,
measure resistance between ground and OPS connector Black/Light Blue
wire. If resistance is less than 5 ohms, go to next step. If
resistance is 5 ohms or more, repair open Black/Light Blue wire.
Black/Light Blue wire is a common sensor ground. If no other engine
sensors are failed, repair ground between sensor and splice. If

Leak Detection Pump Right front inner fender.
Windshield Washer Pump In bottom of windshield washer
reservoir.
Windshield Wiper Motor In engine compartment, on
center of firewall.









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SENDING UNITS & SENSORS









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Component Component Location








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Accelerator Pedal Position
Sensor (Diesel) At left front of engine, below\
cable/lever/linkage cover.
Ambient Temperature Sensor Underside of hood panel, near
latch striker.
Battery Temperature Sensor Below battery tray.
Camshaft Position Sensor (3.9L) Inside distributor.
Camshaft Position Sensor (5.2L) Inside distributor.
Camshaft Position Sensor (5.9L) Inside distributor.
Camshaft Position Sensor (8.0L) In timing chain case/cover, on
left front side of engine.