1998 DODGE RAM 1500 ground clearance

CLEARANCE LAMP NO. 3 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLEARANCE LAMP NO. 4 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLEARANCE LAMP NO. 5 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLOCKSPRING C1-6WAY
CAV CIRCUIT FUNCTION
1 Z909 20BK (DSAB ETC) GROUND
2 X20 20GY/WT (DSAB ETC) RADIO CONTROL MUX
3 V38 20VT/OR S/C SWITCH NO. 2 SIGNAL
4 V37 20VT S/C SWITCH NO. 1 SIGNAL
5 V937 20VT/BR S/C SWITCH RETURN
6 X3 20DG/VT HORN SWITCH SENSE
8W - 80 - 46 8W-80 CONNECTOR PIN-OUTSDR

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
C315 DK GY At Driver Seat N/S
C316 BK At Passenger Seat N/S
C317 BK At Passenger Seat N/S
C319 BK Bottom Left of Left Door N/S
C320 Right Rear Door 43
C322 DK GY Left Rear of Frame 44, 46
C323 BK Left Side of Instrument Panel N/S
C327 BK Right Rear Fender 50, 51
C328 BK Left Rear Fender 50, 51, 52
Camshaft Position Sensor GY Right Front Side of Engine 3, 9
Capacitor Left Rear of Engine Compartment 4
Center High Mounted Stop
Lamp/Cargo LampBK Rear of Cab 49
Cigar Lighter Outlet NAT Rear of Cigar Lighter 32, 35, 36
Clearance Lamp No. 1 BK Left Roof 48
Clearance Lamp No. 2 BK Left-Center Roof 48
Clearance Lamp No. 3 BK Center Roof 48
Clearance Lamp No. 4 BK Right-Center Roof 48
Clearance Lamp No. 5 BK Right Roof 48
Clockspring C1 BK Steering Column 31
Clockspring C2 YL Steering Column 31
Clockspring C3 BK Steering Column N/S
Clockspring C4 BK Steering Column N/S
Clutch Interlock Brake Switch BK At Clutch Pedal 22, 24
Coil On Plug No.1 BK Left Top Side of Intake Manifold 6
Coil On Plug No.2 BK Right Top Side of Intake Manifold 3
Coil On Plug No.3 BK Left Top Side of Intake Manifold 6
Coil On Plug No.4 BK Right Top Side of Intake Manifold 3
Coil On Plug No.5 BK Left Top Side of Intake Manifold 5, 6
Coil On Plug No.6 BK Right Top Side of Intake Manifold 3
Coil On Plug No.7 BK Left Top Side of Intake Manifold 6
Coil On Plug No.8 BK Right Top Side of Intake Manifold 3
Compass/Mini-Trip Computer BK In Overhead Console N/S
Condenser Fan BK Near Condenser 23, 24
Controller Anti-Lock Brake C1 BK Left Fender Side Shield 22, 24, 25
Controller Anti-Lock Brake C2
(ABS)BK Left Fender Side Shield 22, 25
Crankshaft Position Sensor BK Right Rear of Engine Block 3, 9
Cylinder Lock Switch-Driver
(Premium)BK In Left Front Door 41
Cylinder Lock Switch-Passenger
(Premium)LT GY In Right Front Door N/S
Data Link Connector BK Left Bottom of Instrument Panel 35, 38
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 3
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONDITION POSSIBLE CAUSES CORRECTION
SLIPS IN OVERDRIVE
FOURTH GEAR1. Fluid Level Low. 1. Add fluid and check for leaks.
2. Overdrive Clutch Pack Worn. 2. Remove overdrive unit and rebuild clutch
pack.
3. Overdrive Piston Retainer Bleed
Orifice Blown Out.3. Disassemble transmission, remove
retainer and replace orifice.
4. Overdrive Piston or Seal
Malfunction.4. Remove overdrive unit. Replace seals if
worn. Replace piston if damaged. If piston
retainer is damaged, remove and
disassemble the transmission.
5. 3-4 Shift Valve, Timing Valve or
Accumulator Malfunction.5. Remove and overhaul valve body.
Replace accumulator seals. Make sure all
valves operate freely in bores and do not
bind or stick. Make sure valve body screws
are correctly tightened and separator plates
are properly positioned.
6. Overdrive Unit Thrust Bearing
Failure.6. Disassemble overdrive unit and replace
thrust bearing (NO. 1 thrust bearing is
between overdrive piston and clutch hub;
NO. 2 thrust bearing is between the
planetary gear and the direct clutch spring
plate; NO. 3 thrust bearing is between
overrunning clutch hub and output shaft).
7. O/D Check Valve/Bleed Orifice
Failure.7. Check for function/secure orifice insert in
O/D piston retainer.
DELAYED 3-4 UPSHIFT
(SLOW TO ENGAGE)1. Fluid Level Low. 1. Add fluid and check for leaks.
2. Throttle Valve Cable Mis-adjusted. 2. Adjust throttle valve cable.
3. Overdrive Clutch Pack Worn/
Burnt.3. Remove unit and rebuild clutch pack.
4. TPS Faulty. 4. Test with DRBTscan tool and replace as
necessary
5. Overdrive Clutch Bleed Orifice
Plugged.5. Disassemble transmission and replace
orifice.
6. Overdrive Solenoid or Wiring
Shorted/Open.6. Test solenoid and check wiring for
loose/corroded connections or shorts/
grounds. Replace solenoid if faulty and
repair wiring if necessary.
7. Overdrive Excess Clearance. 7. Remove unit. Measure end play and
select proper spacer.
8. O/D Check Valve Missing or
Stuck.8. Check for presence of check valve.
Repair or replace as required.
TORQUE CONVERTER
LOCKS UP IN SECOND
AND/OR THIRD GEARLockup Solenoid, Relay or Wiring
Shorted/Open.Test solenoid, relay and wiring for
continuity, shorts or grounds. Replace
solenoid and relay if faulty. Repair wiring
and connectors as necessary.
HARSH 1-2, 2-3, 3-4 OR
3-2 SHIFTSLockup Solenoid Malfunction. Remove valve body and replace solenoid
assembly.
DRAUTOMATIC TRANSMISSION - 48RE 21 - 155
AUTOMATIC TRANSMISSION - 48RE (Continued)

REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN AN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The blower motor is located on the passen-
ger side of the vehicle under the instrument panel.
The blower motor can be removed from the vehicle
without having to remove the HVAC housing.
(1) Disconnect and isolate the battery negative
cable.
(2) Disconnect the wire harness connector from the
blower motor. (Fig. 5).
(3) Remove the three screws that secure the
blower motor to the HVAC housing.
(4) Remove the blower motor from the HVAC hous-
ing by rotating and tilting the blower motor as
needed for clearance.
INSTALLATION
(1) Align and install the blower motor into the
HVAC housing.
(2) Install the three screws that secure the blower
motor to the HVAC housing. Tighten the screws to
2.2 N´m (20 in. lbs.).
(3) Connect the wire harness connector to the
blower motor.
(4) Reconnect the battery negative cable.
DEFROST DOOR
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THISIS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN AN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Remove the HVAC housing from the vehicle
(Refer to 24 - HEATING & AIR CONDITIONING/
DISTRIBUTION/HVAC HOUSING - REMOVAL).
(2) Disassemble the HVAC housing (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HVAC HOUSING - DISASSEMBLY).
(3) Remove the defrost door actuator and sleeve
from the lower half of the HVAC housing (Fig. 6).
(4) Gently slide the defrost door toward the out-
side of the housing. Tilt and lift the door out of the
housing.
(5) Inspect the defrost door, seals and the HVAC
housing for damage or binding and repair or replace
components as required.
INSTALLATION
(1) Position the defrost door pivot shaft into the
pivot hole in the lower half of the HVAC housing.
(2) Install the defrost door actuator and sleeve.
(3) Assemble the HVAC housing (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HVAC HOUSING - ASSEMBLY)
(4) Install the HVAC housing (Refer to 24 - HEAT-
ING & AIR CONDITIONING/DISTRIBUTION/HVAC
HOUSING - INSTALLATION)
Fig. 5 HVAC Blower Motor - Typical
1 - RESISTOR BLOCK SCREWS (2)
2 - BLOWER MOTOR RESISTOR BLOCK
3 - RESISTOR BLOCK WIRE CONNECTOR
4 - BLOWER MOTOR SCREW
5 - BLOWER MOTOR
6 - BLOWER MOTOR WIRE CONNECTOR
7 - BLOWER MOTOR SCREW
8 - HVAC HOUSING
9 - WIRE HARNESS RETAINER (2)
10 - BLOWER MOTOR SCREW
DRDISTRIBUTION 24 - 31
BLOWER MOTOR (Continued)

CLUTCH - DESCRIPTION, REAR........21-247
CLUTCH - DIAGNOSIS AND TESTING.......6-1
CLUTCH - DISASSEMBLY, FRONT.......21-205
CLUTCH - DISASSEMBLY, LOW/REVERSE . 21-384
CLUTCH - DISASSEMBLY, REAR........21-248
CLUTCH - INSPECTION, FRONT........21-206
CLUTCH - INSPECTION, LOW/REVERSE . . 21-385
CLUTCH - INSPECTION, REAR.........21-248
CLUTCH - OPERATION, FRONT.........21-205
CLUTCH - OPERATION, OVERDRIVE.....21-217
CLUTCH - OPERATION, REAR..........21-248
CLUTCH - SPECIFICATIONS...............6-5
CLUTCH - WARNING....................6-1
CLUTCH AND BAND OPERATION -
DIAGNOSIS AND TESTING, AIR
TESTING TRANSMISSION.............21-144
CLUTCH ASSEMBLY - ASSEMBLY, INPUT . 21-378
CLUTCH ASSEMBLY - DESCRIPTION,
INPUT............................21-373
CLUTCH ASSEMBLY - DISASSEMBLY,
INPUT............................21-374
CLUTCH ASSEMBLY - OPERATION,
INPUT............................21-373
CLUTCH BREAK-IN - STANDARD
PROCEDURE, A/C COMPRESSOR........24-10
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - ASSEMBLY,
OVERRUNNING.....................21-237
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - CLEANING, OVERRUNNING. . . 21-236
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - DESCRIPTION,
OVERRUNNING.....................21-236
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - DISASSEMBLY,
OVERRUNNING.....................21-236
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - INSPECTION,
OVERRUNNING.....................21-237
CLUTCH CAM/OVERDRIVE PISTON
RETAINER - OPERATION,
OVERRUNNING.....................21-236
CLUTCH COIL - DIAGNOSIS AND
TESTING, A/C COMPRESSOR...........24-10
CLUTCH DISC - INSTALLATION............6-5
CLUTCH DISC - REMOVAL...............6-5
CLUTCH HOUSING - DIAGNOSIS AND
TESTING.............................6-7
CLUTCH HOUSING - INSTALLATION........6-9
CLUTCH HOUSING - REMOVAL............6-9
CLUTCH OPERATION - DIAGNOSIS AND
TESTING, AIR CHECKING
TRANSMISSION.....................21-317
CLUTCH PEDAL POSITION SWITCH -
DESCRIPTION........................6-13
CLUTCH PEDAL POSITION SWITCH -
DIAGNOSIS AND TESTING..............6-13
CLUTCH PEDAL POSITION SWITCH -
OPERATION..........................6-13
CLUTCH RELAY - DESCRIPTION, A/C
COMPRESSOR.......................24-13
CLUTCH RELAY - INSTALLATION, A/C
COMPRESSOR.......................24-14
CLUTCH RELAY - OPERATION, A/C
COMPRESSOR.......................24-13
CLUTCH RELAY - REMOVAL, A/C
COMPRESSOR.......................24-14
CLUTCH RELEASE BEARING -
INSTALLATION........................6-10
CLUTCH RELEASE BEARING - REMOVAL....6-9
CLUTCH/COIL - DESCRIPTION, A/C
COMPRESSOR........................24-9
CLUTCH/COIL - INSPECTION, A/C
COMPRESSOR.......................24-11
CLUTCH/COIL - INSTALLATION, A/C
COMPRESSOR.......................24-12
CLUTCH/COIL - OPERATION, A/C
COMPRESSOR........................24-9
CLUTCH/COIL - REMOVAL, A/C
COMPRESSOR.......................24-10
CLUTCHES - DESCRIPTION, HOLDING . . . 21-371
CLUTCHES - OPERATION, HOLDING
.....21-372
CLUTCH-GAS ENGINES - DESCRIPTION,
FAN DRIVE VISCOUS
...................7-50
CLUTCH-GAS ENGINES - OPERATION,
FAN DRIVE VISCOUS
...................7-50
COAT HOOK - INSTALLATION
...........23-66
COAT HOOK - REMOVAL
...............23-66CODE - DESCRIPTION, PAINT...........23-73
CODE PLATE - DESCRIPTION, BODY....Intro.-3
CODES - DESCRIPTION, DIAGNOSTIC
TROUBLE............................25-1
CODES - SPECIFICATIONS, PAINT........23-73
CODES - STANDARD PROCEDURE,
ERASING TRANSMITTER..............8M-12
CODES - STANDARD PROCEDURE,
SETTING TRANSMITTER..............8M-12
COIL - DESCRIPTION, IGNITION.........8I-11
COIL - DIAGNOSIS AND TESTING, A/C
COMPRESSOR CLUTCH...............24-10
COIL - INSTALLATION, IGNITION.........8I-14
COIL - OPERATION, IGNITION...........8I-12
COIL - REMOVAL, IGNITION............8I-13
COIL CAPACITOR - DESCRIPTION,
IGNITION...........................8I-21
COIL CAPACITOR - INSTALLATION,
IGNITION...........................8I-21
COIL CAPACITOR - OPERATION,
IGNITION...........................8I-21
COIL CAPACITOR - REMOVAL, IGNITION . . . 8I-21
COIL RESISTANCE, 3.7L V-6 - IGNITION....8I-5
COIL RESISTANCE, 4.7L V-8 - IGNITION....8I-5
COIL RESISTANCE, 5.7L V-8 - IGNITION....8I-5
COLUMN - DESCRIPTION...............19-6
COLUMN - DIAGNOSIS AND TESTING,
STEERING...........................19-7
COLUMN - INSTALLATION...............19-9
COLUMN - REMOVAL..................19-7
COLUMN OPENING COVER -
INSTALLATION, STEERING.............23-60
COLUMN OPENING COVER - REMOVAL,
STEERING..........................23-60
COLUMN OPENING SUPPORT BRACKET
- INSTALLATION, STEERING............23-60
COLUMN OPENING SUPPORT BRACKET
- REMOVAL, STEERING................23-60
COMBUSTION PRESSURE LEAKAGE -
DIAGNOSIS AND TESTING, CYLINDER....9-186,
9-8,9-93
COMMUNICATION - DESCRIPTION........8E-1
COMMUNICATION - OPERATION..........8E-2
COMPASS CALIBRATION - STANDARD
PROCEDURE.........................8M-3
COMPASS DEMAGNETIZING -
STANDARD PROCEDURE...............8M-4
COMPASS MINI-TRIP COMPUTER -
DIAGNOSIS AND TESTING..............8M-6
COMPASS VARIATION ADJUSTMENT -
STANDARD PROCEDURE...............8M-5
COMPASS/MINI-TRIP COMPUTER -
DESCRIPTION........................8M-6
COMPASS/MINI-TRIP COMPUTER -
INSTALLATION.......................8M-6
COMPASS/MINI-TRIP COMPUTER -
OPERATION.........................8M-6
COMPASS/MINI-TRIP COMPUTER -
REMOVAL...........................8M-6
COMPRESSION PRESSURE - DIAGNOSIS
AND TESTING, CYLINDER.......9-186,9-8,9-93
COMPRESSION/LEAKAGE TESTS -
DIAGNOSIS AND TESTING, CYLINDER....9-239
COMPRESSOR - DESCRIPTION, A/C
......24-48
COMPRESSOR - DIAGNOSIS AND
TESTING, A/C
.......................24-49
COMPRESSOR - OPERATION, A/C
........24-48
COMPRESSOR CLUTCH BREAK-IN -
STANDARD PROCEDURE, A/C
...........24-10
COMPRESSOR CLUTCH COIL -
DIAGNOSIS AND TESTING, A/C
..........24-10
COMPRESSOR CLUTCH RELAY -
DESCRIPTION, A/C
...................24-13
COMPRESSOR CLUTCH RELAY -
INSTALLATION, A/C
...................24-14
COMPRESSOR CLUTCH RELAY -
OPERATION, A/C
.....................24-13
COMPRESSOR CLUTCH RELAY -
REMOVAL, A/C
......................24-14
COMPRESSOR CLUTCH/COIL -
DESCRIPTION, A/C
....................24-9
COMPRESSOR CLUTCH/COIL -
INSPECTION, A/C
.....................24-11
COMPRESSOR CLUTCH/COIL -
INSTALLATION, A/C
...................24-12
COMPRESSOR CLUTCH/COIL -
OPERATION, A/C
......................24-9COMPRESSOR CLUTCH/COIL -
REMOVAL, A/C......................24-10
COMPUTER - DESCRIPTION, COMPASS/
MINI-TRIP..........................8M-6
COMPUTER - DIAGNOSIS AND TESTING,
COMPASS MINI-TRIP..................8M-6
COMPUTER - INSTALLATION, COMPASS/
MINI-TRIP..........................8M-6
COMPUTER - OPERATION, COMPASS/
MINI-TRIP..........................8M-6
COMPUTER - REMOVAL, COMPASS/
MINI-TRIP..........................8M-6
CONDENSER - DESCRIPTION, A/C.......24-52
CONDENSER - OPERATION, A/C.........24-52
CONDITIONER - DESCRIPTION, HEATER
AND AIR ............................24-1
CONDITIONER - OPERATION, HEATER
AND AIR ............................24-1
CONNECTING ROD - CLEANING, PISTON . . 9-282
CONNECTING ROD - CLEANING, PISTON . . 9-140,
9-212
CONNECTING ROD - DESCRIPTION,
PISTON..............9-139,9-211,9-281,9-48
CONNECTING ROD - INSPECTION........9-283
CONNECTING ROD - INSPECTION,
PISTON.......................9-140,9-213
CONNECTING ROD - INSTALLATION,
PISTON.......................9-140,9-213
CONNECTING ROD - REMOVAL, PISTON . . 9-139,
9-212,9-281
CONNECTING ROD BEARING AND
CRANKSHAFT JOURNAL CLEARANCE -
STANDARD PROCEDURE................9-272
CONNECTING ROD BEARING FITTING -
STANDARD PROCEDURE...............9-129
CONNECTING ROD BEARING FITTING,
STANDARD PROCEDURE................9-49
CONNECTOR - DESCRIPTION, DATA LINK . . 8E-3
CONNECTOR - INSTALLATION.......8W-01-11
CONNECTOR - OPERATION, DATA LINK....8E-3
CONNECTOR - REMOVAL...........8W-01-11
CONNECTOR, GROUND AND SPLICE
INFORMATION - DESCRIPTION........8W-01-7
CONNECTOR/GROUND/SPLICE LOCATION
- DESCRIPTION....................8W-91-1
CONSOLE - DESCRIPTION, OVERHEAD....8M-1
CONSOLE - DIAGNOSIS AND TESTING,
OVERHEAD..........................8M-2
CONSOLE - INSTALLATION, FLOOR......23-67
CONSOLE - OPERATION, OVERHEAD......8M-2
CONSOLE - REMOVAL, FLOOR..........23-67
CONSOLE REMOVAL, REMOVAL -
OVERHEAD..........................8M-6
CONTAINER- GAS ENGINES -
DESCRIPTION, COOLANT RECOVERY......7-33
CONTAINER- GAS ENGINES -
INSTALLATION, COOLANT RECOVERY.....7-33
CONTAINER- GAS ENGINES -
OPERATION, COOLANT RECOVERY........7-33
CONTAINER- GAS ENGINES - REMOVAL,
COOLANT RECOVERY..................7-33
CONTAMINATION - DIAGNOSIS AND
TESTING, BRAKE FLUID................5-23
CONTAMINATION - DIAGNOSIS AND
TESTING, FLUID..............21-202,21-366
CONTINUITY - STANDARD PROCEDURE,
TESTING.........................8W-01-9
CONTROL ACTUATOR - DESCRIPTION,
FUEL..............................14-74
CONTROL ACTUATOR - OPERATION,
FUEL..............................14-74
CONTROL ACTUATOR - REMOVAL, FUEL . . 14-74
CONTROL ARM - INSTALLATION, UPPER . . . 2-28
CONTROL ARM - REMOVAL, UPPER......2-28
CONTROL ARM BUSHINGS - 2WD (LD) -
INSTALLATION, LOWER.................2-15
CONTROL ARM BUSHINGS - 2WD (LD) -
REMOVAL, LOWER....................2-13
CONTROL ARM BUSHINGS - 4WD (LD) -
INSTALLATION, LOWER
.................2-14
CONTROL ARM BUSHINGS - 4WD (LD) -
REMOVAL, LOWER
....................2-13
CONTROL CABLE - INSTALLATION,
THROTTLE
.....................14-40,14-84
CONTROL CABLE - REMOVAL,
THROTTLE
.....................14-38,14-83
CONTROL INFORMATION (VECI) -
DESCRIPTION, VEHICLE EMISSION
.....Intro.-2
DRINDEX 7
Description Group-Page Description Group-Page Description Group-Page