1999 DODGE RAM brake

brakelines are attached to and is mounted in the engine compartment.
ECM OUTPUT SIGNALS
APPS & CKP Output To PCM
See ACCELERATOR PEDAL POSITION SENSOR (APPS) OUTPUT FROM ECM
under PCM INPUT SIGNALS.
CCD Bus
These circuits are connected between Engine Control Module
(ECM) and Powertrain Control Module (PCM) to allow communication
between modules.
DLC Output
Data Link Connector (DLC) is connected to Engine Control
Module (ECM). Using a scan tool, data can be retrieved (output) from\
ECM.
5-Volt Sensor Supply Output
Engine Control Module (ECM) supplies a 5-volt reference
signal to the following sensors:
* Crankshaft Position (CKP) Sensor
* Camshaft Position (CMP) Sensor
* Intake Air Temperature (IAT) Sensor
* Engine Oil Pressure Sensor
* Manifold Absolute Pressure (MAP) Sensor
Engine Control Module (ECM) also supplies voltage to the
following sensors:
* Accelerator Pedal Position Sensor (APPS)
* Intake Air Temperature (IAT) Sensor
* Engine Oil Pressure Sensor
* Engine Coolant Temperature (ECT) Sensor
* Manifold Absolute Pressure (MAP) Sensor
* Water-In-Fuel (WIF) Sensor
Fuel Injection Pump Relay
The Engine Control Module (ECM) energizes the fuel injection
pump and integral Fuel Pump Control Module (FPCM) through the relay.
When ignition is turned on, ECM supplies 12 volts to fuel injection
pump relay, located in Power Distribution Center.
Fuel Pump Control Module (FPCM)
Fuel Pump Control Module (FPCM) controls fuel pump using
inputs from Engine Control Module (ECM). FPCM is integral to top of
fuel pump. ECM and FPCM are interconnected together for fuel injection
control.
Fuel Transfer Pump
Engine Control Module (ECM) supplies power to fuel transfer
pump. Transfer fuel pump supplies fuel under low pressure (14 psi)
while engine is running to fuel injection pump. Fuel transfer pump
supplies an excess of fuel to cool fuel injection pump. Excess fuel is
returned to fuel tank by fuel injection pump.
Intake Manifold Air Heater Relays
Intake manifold air heater relays provide voltage to intake
manifold air heater for warming of intake. See Fig. 5. Warming of
intake air aids in engine starting and improved driveability during
cold ambient temperatures. Intake manifold air heater relays are
mounted on inner wheelwell, below driver's side battery. See Fig. 6.

converter lock-up. ECM uses various input signals such as transmission
temperature, output shaft speed, central module timer, engine speed,
APPS and brake switch position to determine operation of transmission
torque converter clutch solenoid. Transmission torque converter clutch
solenoid is located on transmission valve body.
FUEL SYSTEM
FUEL DELIVERY
Fuel Injection Pump
A camshaft-driven Bosch VP44 in-line fuel injection pump is
used to supply high pressure fuel to each fuel injector in precise
metered amounts at the correct time. See Fig. 2. The pump is timed to
camshaft gear. Pump output is controlled by integral Fuel Pump Control
Module (FPCM). Because of electronic control, idle speeds and pump
timing are not adjustable. See ON-VEHICLE ADJUSTMENTS - TRUCKS -
DIESEL article. FPCM can operate engine if crankshaft position sensor
signal does not exist. Fuel injection occurs near completion of
compression stroke for each cylinder.
Fuel injection pump contains an overflow valve which allows
excess fuel to return to the fuel tank. Overflow valve is located on
side of fuel injection pump and is used to attach the fuel return line
to the fuel injection pump.
Fuel Transfer Pump
Fuel transfer pump is located on driver's side of cylinder
block, above starter. See Fig. 2. A 12 volt, 12-amp electric vane-type
pump supplies low fuel pressure from fuel tank, through fuel
heater/fuel filter/water separator to fuel injection pump. Fuel
transfer pump contains internal check valves to prevent fuel from
bleeding back into fuel tank during engine shutdown. Pump will self
prime with ignition on for 2 seconds. Pump has 2 modes, 100 percent
duty cycle (10 psi) when engine is running and 25 percent duty cycle
(7 psi) when engine is cranking.
Fuel Filter/Water Separator
Fuel filter/water separator, located on left side of engine,
protects injection pump by removing water and contaminants from fuel.
See Fig. 2 . Assembly also includes fuel heater and Water-In-Fuel (WIF)
sensor.
In-Tank Fuel Filter
A separate in-tank fuel filter is attached to bottom of fuel
tank module. In-tank fuel filter does not require service under normal
conditions.
FUEL CONTROL
Fuel Injector
Fuel injector delivers atomized fuel into the cylinder.
During fuel injection, fuel pressure from fuel injection pump
increases to fuel injector opening pressure or pop pressure of 4500
psi (316 kg/cm

). This is the pressure required to lift fuel injector
needle valve from its seat, allowing fuel to be injected into the
cylinder. Once fuel pressure decreases to less then the opening
pressure, a spring forces needle valve closed and stops fuel injection
into the cylinders. Each fuel injector is connected to injection pump
by a high pressure (as much as 17,405 psi) line.
Fuel Injection Timing
Pump output is controlled by integral Fuel Pump Control

using DLC and a scan tool. The DLC also provides a means to
communicate with various vehicle control modules, check system
operating conditions and to operate various system components.
MALFUNCTION INDICATOR LIGHT (MIL)
The MIL is located on the instrument panel, just below
tachometer and may also be referred to as the CHECK ENGINE light. MIL
comes on for a short period and then goes off as a bulb and wiring
circuit test each time ignition switch is turned to the ON position.
If Engine Control Module (ECM) receives an incorrect signal or
receives no signal from certain sensors or components, ECM will turn
on the MIL to warn the driver that a malfunction exists in the
electronic system.
MISCELLANEOUS CONTROLS
TRANSMISSION
Transmission Overdrive Solenoid (A/T Models)
Engine Control Module (ECM) operates transmission overdrive
solenoid for controlling transmission overdrive shifts. Transmission
overdrive solenoid is located on transmission valve body.
Transmission Torque Converter Clutch Solenoid (A/T Models)
Engine Control Module (ECM) operates transmission torque
converter clutch solenoid for torque converter lock-up. ECM uses
various input signals such as transmission temperature, output shaft
speed, central module timer, engine speed, APPS and brake switch
position to determine operation of transmission torque converter
clutch solenoid. Torque converter clutch solenoid is located on
transmission valve body.

(IAC) motor.
Battery Temperature Sensor
PCM uses sensor to determine battery temperature and to
control battery charging rate. Temperature data along with battery
voltage data, is used by PCM to vary charging rate. System voltage is
higher at colder temperatures and is gradually reduced at warmer
temperatures.
Battery Voltage
PCM monitors battery voltage to determine fuel injector pulse
width and generator field control. This is done to compensate for
reduced current flow through injector caused by lowered voltage.
Brake Switch
This switch may also be referred to as a brakelight switch.
PCM uses this switch input to maintain idle speed at a preprogrammed
RPM when brakes are applied. If PCM receives an input signal from
brake switch when speed control system is on, PCM will turn speed
control system off.
Camshaft Position (CMP) Sensor
On models equipped with a distributor, CMP sensor is made up
of a Hall Effect switch (sync signal generator) and a rotating pulse
ring (shutter) on distributor shaft. See Fig. 1. On Distributorless
Ignition System (DIS), CMP sensor reads slots in cam timing sprocket.
PCM uses this information along with information from Crankshaft
Position (CKP) sensor to determine if fuel injectors and ignition
coils are properly sequenced for correct cylinders.
Fig. 1: Cut-Away View Of Hall Effect Distributor (Typical)
Courtesy of Chrysler Corp.
Crankshaft Position (CKP) Sensor
CKP sensor detects sets of slots on flywheel/torque converter

operating. When ground is supplied to injector by PCM, armature and
pintle inside injector move a short distance against spring and open a
small orifice. Since fuel is under high pressure, a fine spray is
developed.
Modes Of Operation
As input signals to PCM change, PCM adjusts its response to
output devices. Modes of operation come in 2 types, open loop and
closed loop. In open loop mode, PCM is not using input from HO2S and
is responding to preset programming to determine injector pulse width
and ignition timing. In closed loop mode, PCM adjusts ignition timing
and uses input from HO2S to fine tune injector pulse width.
The following inputs may be used to determine PCM mode:
* A/C Control Positions
* A/C Switch
* Battery Voltage
* Brake Switch
* Camshaft Position (CMP) Sensor
* Crankshaft Position (CKP) Sensor
* Engine Coolant Temperature (ECT) Sensor
* Engine Speed (RPM)
* Heated Oxygen Sensor (HO2S)
* Intake Air Temperature (IAT) Sensor
* Manifold Absolute Pressure (MAP) Sensor
* Park/Neutral (P/N) Switch
* Starter Relay
* Throttle Position (TP) Sensor
* Vehicle Speed Sensor (VSS)
From these inputs, PCM determines which mode vehicle is in
and responds appropriately. Not all inputs are used in all modes or by
all models. Modes of operation are:
* Ignition Switch On (Engine Not Running) - This is an open
loop mode. PCM pre-positions IAC motor based on ECT sensor
input. PCM determines atmospheric pressure from MAP sensor
and determines basic fuel strategy. PCM modifies fuel
strategy according to IAT sensor, ECT sensor and TP sensor
inputs. PCM activates ASD relay, which in turn activates fuel
pump for only 2 seconds unless engine is cranked. PCM also
energizes HO2S heater element for approximately 2 seconds
unless engine is cranked.
* Engine Start-Up - This is an open loop mode. When starter is
engaged, PCM receives input from battery voltage, ignition
switch, CKP sensor, CMP sensor, ECT sensor, IAT sensor, MAP
sensor and TP sensor. Based on these inputs, voltage is
applied to fuel injectors with PCM controlling injection
sequence, rate, and pulse width. PCM provides ground for
injectors to fire in proper order.
PCM determines proper ignition timing according to input
received from CKP sensor. If PCM does not receive CKP sensor signal
within 3 seconds after engine begins cranking, fuel injection system
is shut down and a Diagnostic Trouble Code (FTC) is set in PCM memory.\
* Engine Warm-Up - This is an open loop mode. PCM determines
injector pulse width using input information from battery
voltage, CKP sensor, CMP sensor, ECT sensor, IAT sensor, MAP
sensor and TP sensor. PCM also monitors A/C request and P/N
switch (A/T only) for fuel calculation. PCM controls engine
idle speed through IAC motor. PCM controls ignition timing
based on CKP sensor input.

CHECKING FLUID LEVEL
Transmission
1) Drive vehicle until engine and transmission are at normal
operating temperature. Park vehicle on level surface. Apply parking
brake.
2) With engine idling, move shift lever through all gear
ranges, ending in Neutral. Check fluid level. Fluid level should be at
the MAX arrow mark area on dipstick with transmission fluid
temperature at 180
F (82C). Add appropriate type of transmission
fluid if necessary. See RECOMMENDED FLUID. DO NOT overfill
transmission.
Transfer Case
Park vehicle on level surface. Remove transfer case fill plug
from rear of transfer case. Fluid level should even with bottom of
transfer case fill plug hole on rear of transfer case. Add appropriate
type of transfer case fluid if necessary. See RECOMMENDED FLUID.
Install and tighten transfer case fill plug to specification. See
TORQUE SPECIFICATIONS.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
Park vehicle on level surface. Remove fill plug from rear of
PTO adapter. See Fig. 3. Fluid level should even with bottom of fill
plug hole on rear of PTO adapter. Add appropriate type of fluid if
necessary. See RECOMMENDED FLUID. Install and tighten fill plug to
specification. See TORQUE SPECIFICATIONS.
Fig. 3: Locating Fill Plug & Drain Plug On PTO Adapter (Ram
Pickup 2WD 2500 & 3500)
Courtesy of Chrysler Corp.
RECOMMENDED FLUID

Transmission
Manufacturer recommends using Mopar ATF Plus Type 7176.
Manufacturer does not recommend using additives with transmission
fluid.
Transfer Case
Manufacturer recommends using Mopar ATF Plus Type 7176.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
Manufacturer recommends using Mopar ATF Plus Type 7176.
FLUID CAPACITIES
TRANSMISSION REFILL CAPACITIES ( 1)








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Application Refill Dry Fill
Qts. (L) Qts. (L\
)
Dakota & Durango
42RE, 44RE & 46RE ... ( 2) 1.5 (1.4) .... ( 3) 9.5-11.4 (9.0-10.8)
Ram Pickup
42RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.5-11.0 (8.0-10.4)
46RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.7-13.0 (8.2-12.3)
47RE ................ ( 2) 1.5 (1.4) .... ( 3) 8.7-16.9 (8.2-16.0)
Ram Van/Wagon
32RH & 36RH ......... ( 2) 1.5 (1.4) ...... ( 3) 8.5-9.0 (8.0-8.5)
46RE ................ ( 2) 1.5 (1.4) .. ( 3) 11.4-11.6 (10.8-11.0)
( 1) - Approximate quantity listed.
( 2) - Add fluid until fluid level is at MIN arrow mark on dipstick.
Start engine and allow engine to idle. With brakes applied,
shift transmission through all gears and back to Neutral. Add
additional fluid to bring fluid level to MIN mark on dipstick.
Recheck fluid level with transmission at normal operating
temperature. Adjust fluid level to MAX arrow mark on dipstick.
( 3) - Quantity may vary by type of oil cooler and oil cooler lines.









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TRANSFER CASE REFILL CAPACITIES ( 1)








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Application Pts. (L)\
Dakota & Durango
NV231 .................................................... 2.5 (1.2)\
NV242 .................................................... 2.8 (1.4)\
Ram Pickup
1500 ..................................................... 2.5 (1.2)\
2500 & 3500
2WD With Power Take-Off (PTO) Adapter ................. 9.0 (4.3\
)
5.9L Diesel & V10 ..................................... 6.5 (3.1)\
All Others ............................................ 5.0 (2.4)\
(1) - Approximate quantity listed.









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POWER TAKE-OFF (PTO) ADAPTER REFILL CAPACITIES ( 1)








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Application Pts. (L)\
Ram Pickup
2WD 2500 & 3500 ........................................ 4.6 (2.2)\

(1) - Approximate quantity listed.








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DRAINING & FILLING
Transmission
1) Raise and support vehicle. Loosen oil pan bolts, allowing
fluid to drain from oil pan. Remove oil pan bolts, oil pan and gasket.
Remove oil filter bolts and oil filter from valve body.
2) Adjust kickdown band and low-reverse bands if necessary.
See KICKDOWN BAND and LOW-REVERSE BAND under ADJUSTMENTS.
3) Clean oil pan, magnet and all sealing surfaces. Install
NEW oil filter. Install and tighten oil filter bolts to specification.
See TORQUE SPECIFICATIONS.
4) Using NEW gasket, install oil pan. Install and tighten oil
pan bolts to specification. See TORQUE SPECIFICATIONS.
5) Add Mopar ATF Plus Type 7176 fluid until fluid level is at
MIN arrow mark on dipstick. Start engine and allow engine to idle.
With brakes applied, shift transmission through all gears and back to
Neutral.
6) Add additional fluid to bring fluid level to MIN mark on
dipstick. Recheck fluid level with transmission at normal operating
temperature. Adjust fluid level to MAX arrow mark on dipstick. DO NOT
overfill transmission.
Transfer Case
1) Ensure vehicle is parked on level surface. Remove transfer
case drain plug. Transfer case drain plug is located on rear of
transfer case at driver's side corner of transfer case. Allow fluid to
drain from transfer case.
2) Reinstall transfer case drain plug. Tighten transfer case
drain plug to specification. See TORQUE SPECIFICATIONS. Remove
transfer case fill plug from rear of transfer case. Transfer case fill
plug is located on rear of transfer case, just below identification
tag.
3) Fill transfer case with appropriate type of transfer case
fluid until fluid level is even with bottom of fill plug hole on
transfer case. See RECOMMENDED FLUID. Install and tighten transfer
case fill plug to specification. See TORQUE SPECIFICATIONS.
Power Take-Off (PTO) Adapter (Ram Pickup 2WD 2500 & 3500)
1) Ensure vehicle is parked on level surface. Remove drain
plug from rear of PTO adapter. See Fig. 3. Allow fluid to drain from
PTO adapter.
2) Reinstall drain plug. Tighten drain plug to specification.
See TORQUE SPECIFICATIONS. Remove fill plug from rear of PTO adapter.
See Fig. 3 .
3) Fill PTO adapter with appropriate type of fluid until
fluid level is even with bottom of fill plug hole on PTO adapter. See
RECOMMENDED FLUID. Install and tighten fill plug to specification. See
TORQUE SPECIFICATIONS.
ADJUSTMENTS
KICKDOWN BAND
1) Kickdown band is front band on transmission. Raise and
support vehicle. Loosen kickdown band adjusting screw lock nut while
preventing kickdown adjusting screw from rotating. Kickdown band
adjusting screw is located on side of transmission, near manual lever
shaft. See Fig. 4.
2) Back off kickdown band adjusting screw lock nut 5 turns.