2001 DODGE RAM control arm

8W-90 CONNECTOR/GROUND LOCATIONS
TABLE OF CONTENTS
page
CONNECTOR/GROUND LOCATIONS
DESCRIPTION............................1
CONNECTOR/GROUND
LOCATIONS
DESCRIPTION
This section provides illustrations identifying con-
nector and ground locations in the vehicle. A connec-tor and ground index is provided. Use the wiring
diagrams in each section for connector and ground
identification. Refer to the index for the proper figure
number. For items that are not shown in this section
N/S is placed in the Fig. column.
Connector Name/Number Color Location Fig.
4WD Switch BK On Front Axle N/S
A/C Compressor Clutch BK Rear of A/C Compressor 4,5,6,8
A/C Heater Control BK Center of Instrument Panel 25
A/C Heater Temperature Select NAT Center of Instrument Panel 25
A/C High Pressure Switch BK At A/C Compressor 4,5,6,8
A/C Low Pressure Switch BK Top of A/C Accumulator 1,2
Accelerator Pedal Position Sensor (Diesel) Left Front of Engine 10,11
Aftermarket Trailer Tow Connector Rear of Vehicle N/S
Airbag Control Module Center of I.P. at Airbag Control
Module23
Ambient Temperature Sensor BK Radiator Left Support N/S
Ash Receiver Lamp Center of Instrument Panel 26
Back-up Lamp Switch BK Top of Transmission 13
Battery Temperature Sensor BK Below Battery Tray 16
Blend Door Actuator Center of Instrument Panel N/S
Blower Motor BK Bottom Right of Instrument Panel 23
Blower Motor Resistor Block BK Bottom Right of Instrument Panel 26
Brake Lamp Switch Brake Pedal Arm 23,24
Brake Pressure Switch At Master Cylinder 14
Bypass Jumper GN Top Of Clutch Pedal 27
C105 Rear of Front Bumper N/S
C106 BK Rear of Front Bumper 17
C114 BK Radiator Left Support 15
C125 (Diesel) BK Left Rear of Engine Compartment 2
C126 (Diesel) GY Left Rear of Engine Compartment 2
C129 BK Above Left Front Body Cushion 15,22
C130 At Power Distribution Center 1,2
C134 BK Left Cowl 23,25,27
BR/BE8W-90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 1

Connector Name/Number Color Location Fig.
Cummins Bus (-) Left Front of Engine 10
Cup Holder Lamp Center of Instrument Panel 23,26
Data Link Connector BK Left Bottom of Instrument Panel 23,24
Day/Night Mirror BK Day/Night Mirror N/S
Daytime Running Lamp Module BK Left Fender Side Shield 14
Dome Lamp Rear of Cab 18
Driver Airbag BK Steering Wheel N/S
Driver Door Arm/Disarm Switch BK In Door 19
Driver Door Jamb Switch NAT Door Jamb 19
Driver Door Lock Motor BK In Door 19
Driver Door Window/Lock Switch BL In Door 19
Driver Heated Seat Module BL Under Seat N/S
Driver Heated Seat Switch RD Center of Instrument Panel N/S
Driver Lumbar Motor Under Seat N/S
Driver Power Seat Front Vertical Motor BK Under Seat N/S
Driver Power Seat Horizontal Motor BK Under Seat N/S
Driver Power Seat Rear Vertical Motor Under Seat N/S
Driver Power Seat Switch At Seat N/S
Driver Power Window Motor In Door 19
Duty Cycle EVAP/Purge Solenoid BK Right Fender Side Shield 17
Electric Brake Provision Bottom Left of Instrument Panel N/S
Engine Control Module (Diesel) Left Side Engine 12
Engine Coolant Temperature Sensor (Diesel) BK Left Front of Cylinder Head
(Diesel)10
Engine Coolant Temperature Sensor (Gas) BK On Thermostat Housing 3,6
Engine Oil Pressure Sensor (V6, V8) BK Near Distributor 3
Engine Oil Pressure Sensor (V10) Near Oil Filter 6
Engine Oil Pressure Sensor (Diesel) Left Side of Engine 12
Fuel Heater (Diesel) Left Side of Engine 10
Fuel Injection Pump (Diesel) Left Side of Engine, Below ECM 10
Fuel Injector No.1 BK At Fuel Injector 4,5
Fuel Injector No. 2 BK At Fuel Injector 4,5,6
Fuel Injector No. 3 BK At Fuel Injector 4,5,6
Fuel Injector No. 4 BK At Fuel Injector 4,5,6
Fuel Injector No. 5 BK At Fuel Injector 4,5,6
Fuel Injector No. 6 BK At Fuel Injector 4,5,6
Fuel Injector No. 7 BK At Fuel Injector 4,6
Fuel Injector No. 8 BK At Fuel Injector 4,6
Fuel Injector No. 9 BK At Fuel Injector 6
Fuel Injector No. 10 BK At Fuel Injector 6
Fuel Pump Module LTGY At Frame Rail 22
Fuel Transfer Pump (Diesel) Left Rear of Engine Bottom of
Pump10
BR/BE8W-90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 3
CONNECTOR/GROUND LOCATIONS (Continued)

Connector Name/Number Color Location Fig.
Joint Connector No. 7 NAT Left Side of Instrument Pane 24
Joint Connector No. 8 NAT Center of Instrument Panel 23
Junction Block C1 BL Left Cowl 27
Junction Block C2 NAT Left Cowl 27
Junction Block C3 Left Cowl 20
Junction Block C4 BR Left Cowl 25
Junction Block C5 GN Left Cowl 25
Junction Block C6 BK Left Cowl 25
Junction Block C7 LTGY Left Cowl 25
Junction Block C8 OR Left Cowl 25
Junction Block C9 NAT Left Cowl 25
Leak Detection Pump BK Right Fender Side Shield 17
Left Back-Up Lamp GY Rear of Lamp N/S
Left Fog Lamp BK Rear of Fog Lamp N/S
Left Front Door Speaker (Premium) BK In Door 19
Left Front Door Speaker (Standard) BK In Door 19
Left Front Fender Lamp On Fender 21
Left Front Wheel Speed Sensor BK Left Fender Side Shield 14
Left Headlamp BK At Headlamp N/S
Left License Lamp BK At Rear Bumper 21
Left Outboard Clearance Lamp BK Behind Front of Headliner 20
Left Outboard Headlamp BL At Headlamp N/S
Left Outboard Identification Lamp BK Behind Front of Headliner 20
Left Park/Turn Signal Lamp BK At Lamp N/S
Left Power Mirror BK In Door 19
Left Rear Fender Lamp BK On Fender 21
Left Rear Speaker (Premium) At B Pillar 18
Left Rear Speaker (Standard) At B Pillar 18
Left Rear Door Speaker In Door 18
Left Remote Radio Switch Steering Wheel N/S
Left Speed Control Switch Steering Wheel N/S
Left Tail/Stop Turn Signal Lamp BK At Rear Bumper 21
Left Tweeter Left A Pillar N/S
Left Visor/Vanity Lamp BK Left A-Pillar 20
Low Note Horn BK Front Bumper Right Support 17
Manifold Absolute Pressure Sensor (V6, V8) BK On Throttle Body 4,5
Manifold Absolute Pressure Sensor (V10) BK Top of Intake Manifold 9
Manifold Air Pressure Sensor (Diesel) BK Rear of Intake Manifold 10
Multi-Function Switch On Steering Column 24
Output Speed Sensor BK Left Side of Transmission 13
Overdrive Switch On Shift Lever Arm N/S
Overhead Console BK Front of Headliner 20
BR/BE8W-90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 5
CONNECTOR/GROUND LOCATIONS (Continued)

Connector Name/Number Color Location Fig.
Oxygen Sensor 1/1 Left Bank Up Left Exhaust Manifold Downpipe 13
Oxygen Sensor 1/1 Upstream Catalytic Converter Inlet Side 13
Oxygen Sensor 1/2 Downstream Catalytic Converter Outlet Side 13
Oxygen Sensor 1/2 Left Bank Down Catalytic Converter Outlet Side 13
Oxygen Sensor 1/2 Pre-catalyst Catalytic Converter Inlet Side 13
Oxygen Sensor 1/3 Post Catalyst Catalytic Converter Outlet Side 13
Oxygen Sensor 1/3 Post Catalyst Post Catalyst 13
Oxygen Sensor 2/1 Right Bank Up Right Exhaust Manifold Downpipe 13
Oxygen Sensor 2/2 Right Bank Down Catalytic Converter Outlet Side 13
Park/Neutral Position Switch BK Left Side of Transmission 13
Passenger Airbag At Glove Box 23,26
Passenger Airbag On/Off Switch C1 Lower Right Side of Instrument
Panel23
Passenger Airbag On/Off Switch C2 Lower Right Side of Instrument
Panel23
Passenger Door Arm/Disarm Switch LTGY In Door 19
Passenger Door Jamb Switch NAT In Door 19
Passenger Door Lock Motor BK In Door 19
Passenger Door Window/Lock Switch In Door 19
Passenger Heated Seat Switch BL Center of Instrument Panel N/S
Passenger Heated Seat Module Under Seat N/S
Passenger Lumbar Motor Under Seat N/S
Passenger Power Seat Front Vertical Motor Under Seat N/S
Passenger Power Seat Horizontal Motor Under Seat N/S
Passenger Power Seat Rear Vertical Motor Under Seat N/S
Passenger Power Seat Switch At Seat N/S
Passenger Power Window Motor In Door N/S
Power Seat Heater Control Module Under Seat N/S
Power Mirror Switch Driver Door 19
Power Outlet BK Center of I.P. 25
Powertrain Control Module C1 Right Rear Engine Compartment 1,2
Powertrain Control Module C2 Right Rear Engine Compartment 1,2
Powertrain Control Module C3 Right Rear Engine Compartment 1,2
Radio Choke Relay BK Instrument Panel Center support 23,25
Radio C1 GY Rear of Radio 25
Radio C2 BK Rear of Radio 25
Radio C3 BK Instrument Panel Center support 25
Rear Wheel Speed Sensor BK Left Frame Rail, Near Fuel Tank 21,22
Right Back-Up Lamp BK Rear of Lamp N/S
Right Fog Lamp BK Rear of Fog Lamp N/S
Right Front Door Speaker(Premium BK In Door 19
Right Front Door Speaker(Standard BK In Door 19
Right Front Fender Lamp On Fender 21
8W - 90 - 6 8W-90 CONNECTOR/GROUND LOCATIONSBR/BE
CONNECTOR/GROUND LOCATIONS (Continued)

COOLING SYSTEM TESTER METHOD
WARNING: WITH COOLING SYSTEM TESTER IN
PLACE, PRESSURE WILL BUILD UP FAST. EXCES-
SIVE PRESSURE BUILT UP, BY CONTINUOUS
ENGINE OPERATION, MUST BE RELEASED TO A
SAFE PRESSURE POINT. NEVER PERMIT PRES-
SURE TO EXCEED 138 kPa (20 psi).
Install Cooling System Tester 7700 or equivalent to
pressure cap neck. Start the engine and observe the
tester's pressure gauge. If gauge pulsates with every
power stroke of a cylinder a combustion pressure
leak is evident.
CHEMICAL TEST METHOD
Combustion leaks into the cooling system can also
be checked by using Bloc-Chek Kit C-3685-A or
equivalent. Perform test following the procedures
supplied with the tool kit.
REMOVAL
The alloy cast iron cylinder heads (Fig. 7) are held
in place by eight bolts. The spark plugs are located
at the peak of the wedge between the valves.
(1) Disconnect the battery negative cable from the
battery.
(2) Drain cooling system. (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Remove the intake manifold-to-generator
bracket support rod. Remove the generator.
(4) Remove closed crankcase ventilation system.
(5) Disconnect the evaporation control system.
(6) Remove the air cleaner, air in-let hose and res-
onator.
(7) Perform fuel system pressure release procedure
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE).
(8) Disconnect the fuel supply line from the fuel
rail (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/
QUICK CONNECT FITTING - STANDARD PROCE-
DURE).
(9) Disconnect accelerator linkage and if so
equipped, the speed control and transmission kick-
down cables.
(10) Remove distributor cap and wires.
(11) Disconnect the coil wires.
(12) Disconnect coolant temperature sending unit
wire.
(13) Disconnect heater hoses and bypass hose.
(14) Disconnect the vacuum supply hoses from the
intake manifold.
(15) Disconnect the fuel injector harness and
secure out of the way.
(16) Remove cylinder head covers and gaskets
(Refer to 9 - ENGINE/CYLINDER HEAD/CYLIN-
DER HEAD COVER(S) - REMOVAL).(17) Remove intake manifold and throttle body as
an assembly. Discard the flange side gaskets and the
front and rear cross-over gaskets.
(18) Remove exhaust manifolds (Refer to 9 -
ENGINE/MANIFOLDS/EXHAUST MANIFOLD -
REMOVAL).
(19) Remove rocker arm assemblies and push rods.
Identify to ensure installation in original locations.
(20) Remove the head bolts from each cylinder
head and remove cylinder heads. Discard the cylin-
der head gasket.
(21) Remove spark plugs.
CLEANING
Clean all surfaces of cylinder block and cylinder
heads.
Clean cylinder block front and rear gasket surfaces
using a suitable solvent.
INSPECTION
Inspect all surfaces with a straightedge if there is
any reason to suspect leakage. If out-of-flatness
exceeds 0.00075mm (0.0001in.) times the span length
in any direction, either replace head or lightly
machine the head surface.
FOR EXAMPLE:ÐA 305 mm (12 in.) span is
0.102 mm (0.004 in.) out-of-flat. The allowable out-of-
flat is 305 x 0.00075 (12 x 0.00075) equals 0.23 mm
(0.009 in.). This amount of out-of-flat is acceptable.
The cylinder head surface finish should be
1.78-3.00 microns (70-125 microinches).
Inspect push rods. Replace worn or bent rods.
INSTALLATION
The alloy cast iron cylinder heads (Fig. 7) are held
in place by eight bolts. The spark plugs are located
at the peak of the wedge between the valves.
(1) Position the new cylinder head gaskets onto
the cylinder block.
(2) Position the cylinder heads onto head gaskets
and cylinder block.
(3) Starting at top center, tighten all cylinder head
bolts, in sequence, to 68 N´m (50 ft. lbs.) torque (Fig.
7). Repeat procedure, tighten all cylinder head bolts
to 143 N´m (105 ft. lbs.) torque. Repeat procedure to
confirm that all bolts are at 143 N´m (105 ft. lbs.)
torque.
CAUTION: When tightening the rocker arm bolts, be
sure the piston in that cylinder is NOT at TDC. Con-
tact between the valves and piston could occur.
(4) Install push rods and rocker arm assemblies in
their original positions. Tighten the bolts to 28 N´m
(21 ft. lbs.) torque.
BR/BEENGINE 3.9L 9 - 23
CYLINDER HEAD (Continued)

(8) Install closed crankcase ventilation and evapo-
ration control systems.
(9) Connect the coil wires.
(10) Connect the heat indicator sending unit wire.
(11) Connect the heater hoses and bypass hose.
(12) Install distributor cap and wires.
(13) Hook up the return spring.
(14) Connect the accelerator linkage (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/THROTTLE
CONTROL CABLE - INSTALLATION) and if so
equipped, the speed control and transmission kick-
down cables.
(15) Install the fuel lines (Refer to 14 - FUEL SYS-
TEM/FUEL DELIVERY/QUICK CONNECT FIT-
TING - STANDARD PROCEDURE).
(16) Install the accessory drive bracket and A/C
Compressor (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING/A/C COMPRESSOR -
INSTALLATION).
(17) Install the generator (Refer to 8 - ELECTRI-
CAL/CHARGING/GENERATOR - INSTALLATION)
and drive belt (Refer to 7 - COOLING/ACCESSORY
DRIVE/DRIVE BELTS - INSTALLATION).
(18) Install the air cleaner.
(19) Fill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(20) Connect the negative cable to the battery.
EXHAUST MANIFOLD
DESCRIPTION
The exhaust manifolds (Fig. 71) are constructed of
cast iron and are LOG type with balanced flow. One
exhaust manifold is attached to each cylinder head.
OPERATION
The exhaust manifolds collect the engine exhaust
exiting the combustion chambers, then channels the
exhaust gases to the exhaust pipes attached to the
manifolds.
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Raise and support the vehicle.
(3) Disconnect the exhaust pipe from the exhaust
manifold (Refer to 11 - EXHAUST SYSTEM/EX-
HAUST PIPE - REMOVAL).
(4) Lower the vehicle.
(5) Remove the exhaust heat shields.
(6) Remove bolts, nuts and washers attaching
manifold to cylinder head.
(7) Remove manifold from the cylinder head.
CLEANING
Clean mating surfaces on cylinder head and mani-
fold. Wash with solvent and blow dry with com-
pressed air.
INSPECTION
Inspect manifold for cracks.
Inspect mating surfaces of manifold for flatness
with a straight edge. Gasket surfaces must be flat
within 0.2 mm per 300 mm (0.008 inch per foot).
INSTALLATION
CAUTION: If the studs came out with the nuts when
removing the engine exhaust manifold, install new
studs. Apply sealer on the coarse thread ends.
Water leaks may develop at the studs if this precau-
tion is not taken.
(1) Position the engine exhaust manifolds on the
two studs located on the cylinder head. Install coni-
cal washers and nuts on these studs (Fig. 72).
(2) Install two bolts and conical washers at the
inner ends of the engine exhaust manifold outboard
arms. Install two bolts WITHOUT washers on the
center arm of engine exhaust manifold (Fig. 72).
Starting at the center arm and working outward,
tighten the bolts and nuts to 34 N´m (25 ft. lbs.)
torque.
(3) Install the exhaust heat shields.
(4) Raise and support the vehicle.
Fig. 71 Exhaust ManifoldsÐ3.9L Engine
1 - EXHAUST MANIFOLD (RIGHT)
2 - EXHAUST MANIFOLD (LEFT)
3 - BOLTS & WASHERS
4 - NUTS & WASHERS
BR/BEENGINE 3.9L 9 - 55
INTAKE MANIFOLD (Continued)

CONDITION POSSIBLE CAUSES CORRECTION
ENGINE MISSES ON
ACCELERATION1. Worn or incorrectly gapped spark
plugs1. Replace spark plugs or clean and
set gap. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG -
CLEANING)
2. Spark plug cables defective or
crossed2. Replace or rewire secondary ignition
cables. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
CABLE - REMOVAL)
3. Dirt in fuel system 3. Clean fuel system
4. Burned, warped or pitted valves 4. Install new valves
5. Faulty coil 5. Test and replace as necessary
(Refer to 8 - ELECTRICAL/IGNITION
CONTROL/IGNITION COIL -
REMOVAL)
DIAGNOSIS AND TESTINGÐ MECHANICAL
ENGINE MECHANICAL DIAGNOSIS CHART
CONDITION POSSIBLE CAUSES CORRECTION
NOISY VALVES/LIFTERS 1. High or low oil level in crankcase 1. Check for correct oil level. Adjust
oil level by draining or adding as
needed
2. Thin or diluted oil 2. Change oil. (Refer to 9 -
ENGINE/LUBRICATION/OIL -
STANDARD PROCEDURE)
3. Low oil pressure 3. Check engine oil level. If ok,
Perform oil pressure test. (Refer to
9 - ENGINE/LUBRICATION -
DIAGNOSIS AND TESTING) for
engine oil pressure test/
specifications
4. Dirt in tappets/lash adjusters 4. Clean/replace hydraulic
tappets/lash adjusters
5. Bent push rod(s) 5. Install new push rods
6. Worn rocker arms 6. Inspect oil supply to rocker arms
and replace worn arms as needed
7. Worn tappets/lash adjusters 7. Install new hydraulic tappets/lash
adjusters
8. Worn valve guides 8. Inspect all valve guides and
replace as necessary
9. Excessive runout of valve seats
or valve faces9. Grind valves and seats
BR/BEENGINE 5.2L 9 - 63
ENGINE 5.2L (Continued)

COOLING SYSTEM TESTER METHOD
WARNING: WITH COOLING SYSTEM TESTER IN
PLACE, PRESSURE WILL BUILD UP FAST. EXCES-
SIVE PRESSURE BUILT UP, BY CONTINUOUS
ENGINE OPERATION, MUST BE RELEASED TO A
SAFE PRESSURE POINT. NEVER PERMIT PRES-
SURE TO EXCEED 138 kPa (20 psi).
Install Cooling System Tester 7700 or equivalent to
pressure cap neck. Start the engine and observe the
tester's pressure gauge. If gauge pulsates with every
power stroke of a cylinder a combustion pressure
leak is evident.
CHEMICAL TEST METHOD
Combustion leaks into the cooling system can also
be checked by using Bloc-Chek Kit C-3685-A or
equivalent. Perform test following the procedures
supplied with the tool kit.
REMOVAL
(1) Disconnect the battery negative cable.
(2) Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Remove the air cleaner resonator and duct
work.
(4) Remove the intake manifold-to-generator
bracket support rod. Remove the generator.
(5) Remove closed crankcase ventilation system.
(6) Disconnect the evaporation control system.
(7) Perform the Fuel System Pressure Release pro-
cedure (Refer to 14 - FUEL SYSTEM/FUEL DELIV-
ERY - STANDARD PROCEDURE). Disconnect the
fuel supply line (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE).
(8) Disconnect accelerator linkage and if so
equipped, the speed control and transmission kick-
down cables.
(9) Remove distributor cap and wires.
(10) Disconnect the coil wires.
(11) Disconnect heat indicator sending unit wire.
(12) Disconnect heater hoses and bypass hose.
(13) Remove cylinder head covers and gaskets
(Refer to 9 - ENGINE/CYLINDER HEAD/CYLIN-
DER HEAD COVER(S) - REMOVAL).
(14) Remove intake manifold (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE MANIFOLD -
REMOVAL) and throttle body as an assembly. Dis-
card the flange side gaskets and the front and rear
cross-over gaskets.
(15) Remove exhaust manifolds (Refer to 9 -
ENGINE/MANIFOLDS/EXHAUST MANIFOLD -
REMOVAL).
(16) Remove rocker arm assemblies and push rods.
Identify to ensure installation in original locations.(17) Remove the head bolts from each cylinder
head and remove cylinder heads. Discard the cylin-
der head gasket.
(18) Remove spark plugs.
CLEANING
Clean all surfaces of cylinder block and cylinder
heads.
Clean cylinder block front and rear gasket surfaces
using a suitable solvent.
INSPECTION
Inspect all surfaces with a straightedge if there is
any reason to suspect leakage. If out-of-flatness
exceeds 0.00075mm (0.0001in.) times the span length
in any direction, either replace head or lightly
machine the head surface.
FOR EXAMPLE:ÐA 305 mm (12 in.) span is
0.102 mm (0.004 in.) out-of-flat. The allowable out-of-
flat is 305 x 0.00075 (12 x 0.00075) equals 0.23 mm
(0.009 in.). This amount of out-of-flat is acceptable.
The cylinder head surface finish should be
1.78-3.00 microns (70-125 microinches).
Inspect push rods. Replace worn or bent rods.
INSTALLATION
(1) Clean all surfaces of cylinder block and cylin-
der heads.
(2) Clean cylinder block front and rear gasket sur-
faces using a suitable solvent.
(3) Position new cylinder head gaskets onto the
cylinder block.
(4) Position cylinder heads onto head gaskets and
cylinder block.
(5) Starting at top center, tighten all cylinder head
bolts, in sequence (Fig. 6).
Fig. 6 Cylinder Head Bolt Tightening Sequence
9 - 80 ENGINE 5.2LBR/BE
CYLINDER HEAD (Continued)