1999 DODGE RAM sensor

"R" ABBREVIATION TABLE

"R" ABBREVIATION TABLE
ABBREVIATION DEFINITION RABS Rear Anti-Lock Brake System RAC Remote Accessory Control RAM Random Access Memory RAP Retained Accessory Power RECIRC Recirculation RED Red RH Right hand ROM Read Only Memory RPM Revolutions Per Minute RVB Rear Vacuum Break RWAL Rear Wheel Anti-Lock Brake RWD Rear Wheel Drive Recirc. Recirculate or Recirculation Reg. Regulator Rly. Relay

"S" ABBREVIATION TABLE

"S" ABBREVIATION TABLE
ABBREVIATION DEFINITION SAW Spark Angle Word _ SBC Single Bed Converter _ SBEC Single Board Engine Controller _ SC Super Charged _ SCC Spark Control Computer _ SCS Air Suction Control Solenoid _ SDM Supplemental Restraint System Diagnostic Module _ SDU SRS Diagnostic Unit _ SEN Sensor _ SES Service Engine Soon _ SFI Sequential (Port) Fuel Injection _ SIG RTN Signal Return circuit _ SIL Shift Indicator Light _ SIR Supplemental Inflatable Restraint _ SMEC Single Module Engine Controller _ SOHC Single Overhead Cam _ SOL or SoL Solenoid _ SPFI Sequential Port Fuel Injection _ SPK Spark Control _ SPOUT Spark Output Signal _ SRS Supplemental Restraint System (Air Bag) _ SS 3/4-4/3 Shift Solenoid circuit _ SSI Solid State Ignition _ STAR Self-Test Automatic Readout _ STI Self Test Input circuit _ STO Self-Test Output _ SUB-O2 Sub Oxygen Sensor _ Sen. Or Sens. Sensor _ Sol. Solenoid _ Sprchg. Supercharger _ Strg. Steering _ Susp. Suspension _ Sw. Switch _ Sys. System _

"T" ABBREVIATION TABLE

"T" ABBREVIATION TABLE
ABBREVIATION DEFINITION T.V. Throttle Valve _ TAB Thermactor Air By-Pass _ TAC Thermostatic Air Cleaner _ TAD Thermactor Air Diverter _ TAN Tan _ TBI Throttle Body Injection _ TCC Torque Converter Clutch _ TCCS Toyota Computer Control System TDC Top Dead Center _ TDCL Total Diagnostic Communication TFI Thick Film Ignition system _ TGS Top Gear Switch (cancels SIL in THERMAC Thermostatic Air Cleaner _ THS Transmission Hydraulic Switch _ TP/TPS Throttle Position Sensor _ TPI Tuned Port Injection _ TPS Throttle Position Sensor/Switch TS Temperature Sensor _ TSB Technical Service Bulletin _ TTS Transmission Temperature Switch TV Thermovalve _ TWC Three-Way Catalyst _ Temp. Temperature _ Trans. Transaxle/Transmission _

"V" ABBREVIATION TABLE

"V" ABBREVIATION TABLE
ABBREVIATION DEFINITION V Valve _ VAF Vane Air Flow sensor or circuit _ VAPS Variable Assist Power Steering _ VAT Vane Air Temperature _ VATS Vehicle Anti-Theft System _ VBATT Vehicle Battery Voltage _ VCC Viscous Converter Clutch _ VIN Vehicle Identification Number _ VIO Violet _ VLR Volt Loop Reserve _ VM Vacuum Modulator _ VM Vane Meter _ VOM Volt-Ohmmeter (Analog) _ VPWR Vehicle Power supply voltage (10-14 VREF Voltage Reference (ECA supplied ref VRV Vacuum Regulator Valve _ VSC Vehicle Speed Control sensor or sign VSS Vehicle Speed Sensor or signal _ VSV Vacuum Switching Valve _ Vac. Vacuum _ Volt. Voltage _

HEATER HOSES
HIGH PRESSURE RELIEF VALVES (HPRV)
IDLERS
IN-LINE FILTERS
METAL FITTINGS
METAL LINES
MIX AND AIR CONTROL DOORS (BLEND DOORS)
O-RINGS
ORIFICE TUBES
PILOT-OPERATED ABSOLUTES (POAS)
PLENUMS
PRESSURE CONTROL VALVES
PRESSURE SENSORS
PULLEYS
RADIATORS
RECEIVER-DRIERS
REFRIGERANT
REFRIGERANT OIL
RELAYS
SEALS
SERVICE PORTS
SPRING LOCK COUPLINGS
SUCTION THROTTLING VALVES (STVS)
SWITCHES (ELECTRICAL)
TENSIONERS
THERMISTORS AND PRESSURE SENSORS
THERMOSTATS AND HOUSINGS
VACUUM HOSES AND TUBES
VACUUM RESERVOIRS
VACUUM TUBES
VALVES IN RECEIVER (VIRS)
WATER PUMPS (ELECTRIC AUXILIARY)
WIRING HARNESSES AND CONNECTORS
MOTORIST ASSURANCE PROGRAM (MAP)
OVERVIEW
The Motorist Assurance Program is the consumer outreach
effort of the Automotive Maintenance and Repair Association, Inc.
(AMRA). Participation in the Motorist Assurance Program is drawn from
retailers, suppliers, independent repair facilities, vehicle
manufacturers and industry associations.
Our organization's mission is to strengthen the relationship
between the consumer and the auto repair industry. We produce
materials that give motorists the information and encouragement to
take greater responsibility for their vehicles-through proper,
manufacturer-recommended, maintenance. We encourage participating
service and repair shops (including franchisees and dealers) to adopt
(1) a Pledge of Assurance to their Customers and (2) the Motorist
Assurance Program Standards of Service. All participating service
providers have agreed to subscribe to this Pledge and to adhere to the
promulgated Standards of Service demonstrating to their customers that
they are serious about customer satisfaction.
These Standards of Service require that an inspection of the
vehicle's (problem) system be made and the results communicated to the\
customer according to industry standards. Given that the industry did
not have such standards, the Motorist Assurance Program successfully
promulgated industry inspection communication standards in 1994-95 for
the following systems: Exhaust, Brakes, ABS, Steering and Suspension,
Engine Maintenance and Performance, HVAC, and Electrical Systems.
Further, revisions to all of these inspection communication standards

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Condition Code Procedure
Air control door
binding ................ A ... Require repair or replacement
Air control door
broken ................. A .. Require repair or replacement.
Air control door
leaking ................ A .. Require repair or replacement.
Air control door
seized ................. A .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Cracked ................. 2 .. Suggest repair or replacement.
Drain hole restricted ... A ................. Require repair.
Drain plugged ........... A ................. Require repair.
Duct disconnected ....... A .. Require repair or replacement.
Duct leaking ............ A .. Require repair or replacement.
Duct missing ............ C ............ Require replacement.
Duct restricted ......... A .. Require repair or replacement.
Leaking ................. A .. Require repair or replacement.
Noisy ................... 2 ..... Suggest cleaning or repair.
Odor .................... 2 ..... Suggest cleaning or repair.
Restricted .............. A .... Require cleaning, repair, or
replacement.









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PRESSURE CONTROL VALVES
See:
* EVAPORATOR PRESSURE REGULATORS (EPRS)
* HIGH PRESSURE RELIEF VALVES (HPRV)
* PILOT-OPERATED ABSOLUTES (POAS)
* SUCTION THROTTLING VALVES (STVS)
* VALVES IN RECEIVER (VIRS)
PRESSURE SENSORS
See THERMISTORS AND PRESSURE SENSORS .
PULLEYS
PULLEY INSPECTION








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Condition Code Procedure
Alignment incorrect ..... B .. Require repair or replacement.
Application incorrect ... B ............ Require replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not

Alignment incorrect ..... B .. Require repair or replacement.
Application incorrect ... B ............ Require replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Bearing worn ............ 1 ............ Suggest replacement.
Belt tension incorrect .. B ... Require adjustment or repair.
Bracket cracked ......... A .. Require repair or replacement.
Housing cracked ......... A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 ............ Suggest replacement.
Pulley damaged, affecting
belt life .............. A ............ Require replacement.
Seized .................. A .. Require repair or replacement.









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THERMISTORS AND PRESSURE SENSORS
NOTE: Includes, but not limited to, In-Car Temperature, Ambient
Air Temperature, Sun Load Sensor, etc.
THERMISTOR AND PRESSURE SENSOR INSPECTION









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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Calibration incorrect ... B .. Require repair or replacement.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted,
affecting performance .. A ........... ( 1) Require repair or
replacement.
Connector melted, not
affecting performance .. 2 ........... ( 1) Suggest repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. A ........... ( 2) Require repair or
replacement.
Missing ................. C ............ Require replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance ... 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.

evaporator inlet line and "O" rings with refrigerant oil. Lubricate
orifice tube and "O" ring with refrigerant oil. Insert orifice tube
into evaporator inlet line with short screen toward condenser.
2) Tighten liquid line nut to 18 ft. lbs. (24 N.m). To
complete installation, reverse removal procedure. Evacuate, charge,
and test system for proper operation.
Removal ("F" Body)
Discharge A/C system, using approved recovery/recycling
equipment. Disconnect negative battery cable. Disconnect A/C pressure
switch connector. Use a backup wrench to hold evaporator fitting, and
loosen evaporator liquid line fitting. Remove bolt. Disconnect
evaporator liquid line. Remove and discard "O" rings. Using needle-
nose pliers, remove orifice tube from evaporator inlet line.
Installation
1) Clean evaporator line fitting with refrigerant oil. Coat
inside of inlet line and evaporator line "O" rings with refrigerant
oil. Lubricate orifice tube and "O" ring with refrigerant oil and
insert them into inlet line. Insert orifice tube into evaporator inlet
line with long screen inlet end toward condenser.
2) Tighten bolt to 12 ft. lbs. (16 N.m). Tighten evaporator
line fitting to 28 ft. lbs. (38 N.m). To complete installation,
reverse removal procedure. Evacuate, charge, and test system for
proper operation.
Removal ("J" & "N" Body)
1) Locate orifice tube. See ORIFICE TUBE LOCATION &
REMOVER/INSTALLER APPLICATION table. Discharge A/C system, using
approved recovery/recycling equipment. On "J" body, remove upper
closeout panel. On "N" body, raise and support vehicle. On all models,
disconnect condenser-to-evaporator line at condenser outlet and
discard "O" rings.
2) Disconnect condenser-to-evaporator line clip on right side
body rail, behind engine mount. Remove orifice tube using Orifice Tube
Remover/Installer (J-26549-E) or needle-nose pliers.
3) If difficulty is encountered during removal of a plugged
or restricted orifice tube, remove as much residue as possible. Using
a heat gun, carefully apply heat 1/4" from dimples on condenser inlet
line. Be careful not to overheat line.
4) If A/C pressure switch is located near orifice tube,
remove switch to protect it from heat. While heat is being applied,
grip orifice tube using orifice tube remover/installer or needle-nose
pliers. Use a turning motion along with a push-pull motion to loosen
and remove orifice tube.
Installation
1) Coat inside of condenser inlet line and "O" rings with
refrigerant oil. Lubricate orifice tube "O" ring with refrigerant oil
and insert into condenser inlet line. Insert orifice tube into
condenser inlet line with shorter screen toward evaporator.
2) Connect condenser-to-evaporator line clip on right side
body rail. Lubricate "O" rings and connect condenser inlet line.
Tighten condenser inlet line nut to 12 ft. lbs. (16 N.m). Install
closeout panel. Evacuate, charge, and test system for proper
operation.
Removal ("W" Body)
1) Locate orifice tube. See ORIFICE TUBE LOCATION &
REMOVER/INSTALLER APPLICATION table. Remove air cleaner and duct
assembly. Discharge A/C system, using approved recovery/recycling
equipment. Disconnect negative battery cable. Disconnect ABS modulator
and A/C pressure sensor/fan switch electrical connectors.

2) Disconnect vacuum line at PCV valve located in valve
cover. Install .185" fixed orifice Air Metering Fitting (6714) into
disconnected vacuum line in place of PCV valve.
3) Disconnect purge vacuum hose from passenger's side front
corner of throttle body, next to MAP sensor. Place cap on vacuum hose
fitting on throttle body.
4) Connect scan tool to Data Link Connector (DLC) located
below driver's side of instrument panel, near steering column. See
Fig. 1, 2 or 3.
5) Start engine and warm engine to normal operating
temperature. Using scan tool manufacturer's instructions, select
SYSTEM TEST and then access the MINIMUM AIRFLOW display on scan tool.
When accessed, scan tool will count down to stabilize idle RPM and
display minimum airflow idle RPM. Minimum airflow idle RPM should be
500-900 RPM.
6) Shut engine off. If minimum airflow idle RPM is correct,
throttle body is okay. Go to next step. If minimum airflow idle RPM is
not within specification, using approved cleaner, clean throttle body
and recheck minimum airflow idle RPM. If correct minimum airflow idle
RPM cannot be obtained, replace throttle body. Go to next step.
7) Remove air metering fitting. Reinstall vacuum hoses as
necessary. Reinstall air duct on throttle body. Remove scan tool.
Ram Pickup 8.0L
Throttle body minimum airflow cannot be checked on this
application.
THROTTLE POSITION SENSOR
NOTE: Throttle Position (TP) sensor is nonadjustable. Use following\
procedure to check TP sensor calibration. For complete
testing of TP sensor and wiring circuit, see SELF-DIAGNOSTICS
- JEEP, TRUCKS & RWD VANS article.
Dakota, Ram Pickup, Ram Van & Ram Wagon
1) Remove components for access to electrical connector at TP
sensor mounted on throttle body. With electrical connector installed
on TP sensor, turn ignition on with engine off. DO NOT start engine.
2) Using digital volt-ohmmeter, measure voltage at center
terminal on electrical connector for TP sensor with throttle valve
closed (idle position). Voltage should be greater than .35 volt, but
less than .90 volt.
3) Slowly open throttle to full throttle and note voltage
reading. Voltage should smoothly increase to less than 4.50 volts.
Replace TP sensor if voltage is not within specification.

Fig. 4. Repair as necessary. After repairs are done, clear DTCs.
Fig. 4: Identifying Timing Gear Marks
Courtesy of Chrysler Corp.
IDLE SPEED
Idle speed is controlled by Engine Control Module (ECM). Idle\
speed is not adjustable.
THROTTLE POSITION SENSOR
THROTTLE POSITION SENSOR ADJUSTMENT
Throttle position sensor may also be referred to as
Acceleration Pedal Position Sensor (APPS). Throttle Position (TP)
sensor is not adjustable.










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