BLOWER MOTOR SWITCH
The heater-only or heater-A/C blower motor is con-
trolled by a four position rotary-type blower motor
switch, mounted in the heater-A/C control panel. The
switch allows the selection of one of four blower
motor speeds, but can only be turned off by selecting
the Off position with the heater-A/C mode control
switch.
The blower motor switch receives ignition-switched
battery current through the mode control switch from
a fuse in the fuseblock module. The blower motor
switch directs the battery current to the blower
motor resistor, or to the blower motor relay, as
required to achieve the selected blower motor speed.
The blower motor switch cannot be repaired and, if
faulty or damaged, it must be replaced. The blower
motor switch knob is available for service replace-
ment.
COMPRESSOR
The
air
conditioning
system
uses
a
Sanden
SD7H15 seven cylinder, reciprocating wobble plate-
type compressor on all models. This compressor has a
fixed displacement of 150 cubic centimeters (9.375
cubic inches), and has both the suction and discharge
ports located on the cylinder head. A label identifying
the use of R-134a refrigerant is located on the com-
pressor.
The compressor is driven by the engine through an
electric clutch, drive pulley and belt arrangement.
The compressor is lubricated by refrigerant oil that is
circulated throughout the refrigerant system with the
refrigerant.
The compressor draws in low-pressure refrigerant
vapor from the evaporator through its suction port. It
then compresses the refrigerant into a high-pressure,
high-temperature refrigerant vapor, which is then
pumped to the condenser through the compressor dis-
charge port.
The compressor cannot be repaired. If faulty or
damaged, the entire compressor assembly must be
replaced. The compressor clutch, pulley and clutch
coil are available for service.
COMPRESSOR CLUTCH
The compressor clutch assembly consists of a sta-
tionary electromagnetic coil, a hub bearing and pul-
ley assembly, and a clutch plate (Fig. 3). The
electromagnetic coil unit and the hub bearing and
pulley assembly are each retained on the nose of the
compressor front housing with snap rings. The clutch
plate is keyed to the compressor shaft and secured
with a nut.
These components provide the means to engage
and disengage the compressor from the engine ser-
pentine accessory drive belt. When the clutch coil is
energized, it magnetically draws the clutch into con-
tact with the pulley and drives the compressor shaft.
When the coil is not energized, the pulley freewheels
on the clutch hub bearing, which is part of the pulley.
The compressor clutch and coil are the only serviced
parts on the compressor.
The compressor clutch engagement is controlled by
several components: the heater-A/C mode control
switch, the low pressure cycling clutch switch, the
high pressure cut-off switch, the compressor clutch
relay, and the Powertrain Control Module (PCM).
The PCM may delay compressor clutch engagement
for up to thirty seconds. Refer to Group 14 - Fuel
System for more information on the PCM controls.
COMPRESSOR CLUTCH RELAY
The compressor clutch relay is a International
Standards Organization (ISO) micro-relay. The termi-
nal designations and functions are the same as a con-
ventional
ISO
relay.
However,
the
micro-relay
terminal orientation (footprint) is different, the cur-
rent capacity is lower, and the relay case dimensions
are smaller than those of the conventional ISO relay.
The compressor clutch relay is a electromechanical
device that switches battery current to the compres-
sor clutch coil when the Powertrain Control Module
(PCM) grounds the coil side of the relay. The PCM
responds to inputs from the heater-A/C mode control
switch, the low pressure cycling clutch switch, and
the high pressure cut-off switch. See Compressor
Clutch Relay in the Diagnosis and Testing section of
this group for more information.
The compressor clutch relay is located in the Power
Distribution Center (PDC) in the engine compart-
ment. Refer to the PDC label for relay identification
and location.
The compressor clutch relay cannot be repaired
and, if faulty or damaged, it must be replaced.
Fig. 3 Compressor Clutch
24 - 6
HEATING AND AIR CONDITIONING
TJ
DESCRIPTION AND OPERATION (Continued)
Содержание Wrangler 1999
Страница 1: ...HOFRPH WR WKH UDQJOHU OHFWURQLF 6HUYLFH 0DQXDO OLFN 2Q 7KH RJR 7R HJLQ...
Страница 7: ...FASTENER IDENTIFICATION TJ INTRODUCTION 5 GENERAL INFORMATION Continued...
Страница 8: ...FASTENER STRENGTH 6 INTRODUCTION TJ GENERAL INFORMATION Continued...
Страница 10: ...METRIC CONVERSION 8 INTRODUCTION TJ GENERAL INFORMATION Continued...
Страница 28: ...Fig 1 Wheel Alignment Measurements 2 2 SUSPENSION TJ DESCRIPTION AND OPERATION Continued...
Страница 60: ...FRONT AXLES DIAGNOSIS 3 18 DIFFERENTIAL AND DRIVELINE TJ DIAGNOSIS AND TESTING Continued...
Страница 61: ...CONTINUED TJ DIFFERENTIAL AND DRIVELINE 3 19 DIAGNOSIS AND TESTING Continued...
Страница 86: ...Fig 72 Gear Tooth Contact Patterns 3 44 DIFFERENTIAL AND DRIVELINE TJ ADJUSTMENTS Continued...
Страница 95: ...DIAGNOSIS CHART TJ DIFFERENTIAL AND DRIVELINE 3 53 DIAGNOSIS AND TESTING Continued...
Страница 96: ...DIAGNOSIS CHART CONTINUED 3 54 DIFFERENTIAL AND DRIVELINE TJ DIAGNOSIS AND TESTING Continued...
Страница 120: ...Fig 75 Gear Tooth Contact Patterns 3 78 DIFFERENTIAL AND DRIVELINE TJ ADJUSTMENTS Continued...
Страница 125: ...Hub Puller 6790 Dial Indicator C 3339 TJ DIFFERENTIAL AND DRIVELINE 3 83 SPECIAL TOOLS Continued...
Страница 130: ...DIAGNOSIS CHART 3 88 DIFFERENTIAL AND DRIVELINE TJ DIAGNOSIS AND TESTING Continued...
Страница 131: ...DIAGNOSIS CHART CONTINUED TJ DIFFERENTIAL AND DRIVELINE 3 89 DIAGNOSIS AND TESTING Continued...
Страница 154: ...Fig 75 Gear Tooth Contact Patterns 3 112 DIFFERENTIAL AND DRIVELINE TJ ADJUSTMENTS Continued...
Страница 198: ...Fig 2 Clutch Components And Inspection TJ CLUTCH 6 3 DIAGNOSIS AND TESTING Continued...
Страница 200: ...DIAGNOSTIC CHART TJ CLUTCH 6 5 DIAGNOSIS AND TESTING Continued...
Страница 201: ...DIAGNOSTIC CHART 6 6 CLUTCH TJ DIAGNOSIS AND TESTING Continued...
Страница 202: ...DIAGNOSTIC CHART CONTINUED TJ CLUTCH 6 7 DIAGNOSIS AND TESTING Continued...
Страница 203: ...DIAGNOSTIC CHART CONTINUED 6 8 CLUTCH TJ DIAGNOSIS AND TESTING Continued...
Страница 302: ...Fig 1 Instrument Cluster Actuator Test 8E 6 INSTRUMENT PANEL SYSTEMS TJ DIAGNOSIS AND TESTING Continued...
Страница 322: ......
Страница 437: ...Wiring Diagram Symbols 8W 01 6 8W 01 GENERAL INFORMATION TJ DESCRIPTION AND OPERATION Continued...
Страница 617: ...Fig 1 Front End Wiring Connectors TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 7 DESCRIPTION AND OPERATION Continued...
Страница 620: ...Fig 4 Engine Compartment Connectors LHD 8W 90 10 8W 90 CONNECTOR GROUND LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 623: ...Fig 8 Windshield Wiper Motor RHD TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 13 DESCRIPTION AND OPERATION Continued...
Страница 627: ...Fig 12 Engine Grounds TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 17 DESCRIPTION AND OPERATION Continued...
Страница 630: ...Fig 15 Dash Panel Connectors LHD 8W 90 20 8W 90 CONNECTOR GROUND LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 631: ...Fig 16 Dash Panel Connectors RHD TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 21 DESCRIPTION AND OPERATION Continued...
Страница 635: ...Fig 20 Steering Column Connectors TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 25 DESCRIPTION AND OPERATION Continued...
Страница 637: ...Fig 22 Body Connectors LHD TJ 8W 90 CONNECTOR GROUND LOCATIONS 8W 90 27 DESCRIPTION AND OPERATION Continued...
Страница 638: ...Fig 23 Rear Body Wiring Connectors RHD 8W 90 28 8W 90 CONNECTOR GROUND LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 643: ...Fig 1 Engine Compartment Splices Front 8W 95 4 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 644: ...Fig 2 Engine Compartment Splices Rear LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 5 DESCRIPTION AND OPERATION Continued...
Страница 645: ...Fig 3 Engine Compartment Splices Rear RHD 8W 95 6 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 646: ...Fig 4 Engine Wiring Splices LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 7 DESCRIPTION AND OPERATION Continued...
Страница 647: ...Fig 5 Engine Wiring Splices RHD 8W 95 8 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 648: ...Fig 6 Engine Wiring Splices LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 9 DESCRIPTION AND OPERATION Continued...
Страница 649: ...Fig 7 Engine Wiring Splices RHD 8W 95 10 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 650: ...Fig 8 Dash Panel Wiring Splices LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 11 DESCRIPTION AND OPERATION Continued...
Страница 651: ...Fig 9 Dash Panel Wiring Splices RHD 8W 95 12 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 652: ...Fig 10 Instrument Panel Wiring Splices LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 13 DESCRIPTION AND OPERATION Continued...
Страница 653: ...Fig 11 Instrument Panel Wiring Splices RHD 8W 95 14 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 654: ...Fig 12 Body Wiring Splices LHD TJ 8W 95 SPLICE LOCATIONS 8W 95 15 DESCRIPTION AND OPERATION Continued...
Страница 655: ...Fig 13 Body Wiring Splices RHD 8W 95 16 8W 95 SPLICE LOCATIONS TJ DESCRIPTION AND OPERATION Continued...
Страница 671: ...Oil Lubrication System 2 5L Engine 9 16 2 5L ENGINE TJ DESCRIPTION AND OPERATION Continued...
Страница 713: ...Oil Lubrication System 4 0L Engine 9 58 4 0L ENGINE TJ DESCRIPTION AND OPERATION Continued...
Страница 754: ...Fig 1 Exhaust System 2 5L Engine Fig 2 Exhaust System 4 0L Engine 11 2 EXHAUST SYSTEM TJ GENERAL INFORMATION Continued...
Страница 764: ...SPECIFICATIONS FRAME DIMENSIONS FRAME SIDE VIEW TJ FRAME AND BUMPERS 13 7...
Страница 765: ...FRAME TOP VIEW 13 8 FRAME AND BUMPERS TJ SPECIFICATIONS Continued...
Страница 831: ...Fig 1 Recirculating Ball Type Gear 19 12 STEERING TJ DESCRIPTION AND OPERATION Continued...
Страница 883: ...6747 1A Adapter Fixture MD 998805 Installer Seal TJ TRANSMISSION AND TRANSFER CASE 21 37 SPECIAL TOOLS Continued...
Страница 923: ...Fig 1 30 32 RH Automatic Transmission TJ TRANSMISSION AND TRANSFER CASE 21 77 GENERAL INFORMATION Continued...
Страница 994: ...HYDRAULIC FLOW IN PARK NEUTRAL 21 148 TRANSMISSION AND TRANSFER CASE TJ SCHEMATICS AND DIAGRAMS Continued...
Страница 995: ...HYDRAULIC FLOW IN D FIRST GEAR TJ TRANSMISSION AND TRANSFER CASE 21 149 SCHEMATICS AND DIAGRAMS Continued...
Страница 996: ...HYDRAULIC FLOW IN D SECOND GEAR 21 150 TRANSMISSION AND TRANSFER CASE TJ SCHEMATICS AND DIAGRAMS Continued...
Страница 997: ...HYDRAULIC FLOW IN D THIRD GEAR TJ TRANSMISSION AND TRANSFER CASE 21 151 SCHEMATICS AND DIAGRAMS Continued...
Страница 999: ...HYDRAULIC FLOW AT PART THROTTLE 3 2 KICKDOWN TJ TRANSMISSION AND TRANSFER CASE 21 153 SCHEMATICS AND DIAGRAMS Continued...
Страница 1000: ...HYDRAULIC FLOW AT FULL THROTTLE 3 2 KICKDOWN 21 154 TRANSMISSION AND TRANSFER CASE TJ SCHEMATICS AND DIAGRAMS Continued...
Страница 1001: ...HYDRAULIC FLOW IN MANUAL SECOND TJ TRANSMISSION AND TRANSFER CASE 21 155 SCHEMATICS AND DIAGRAMS Continued...
Страница 1002: ...HYDRAULIC FLOW IN MANUAL LOW 21 156 TRANSMISSION AND TRANSFER CASE TJ SCHEMATICS AND DIAGRAMS Continued...
Страница 1003: ...HYDRAULIC FLOW IN REVERSE TJ TRANSMISSION AND TRANSFER CASE 21 157 SCHEMATICS AND DIAGRAMS Continued...
Страница 1004: ...HYDRAULIC FLOW IN MANUAL FIRST GEAR 1 21 158 TRANSMISSION AND TRANSFER CASE TJ SCHEMATICS AND DIAGRAMS Continued...
Страница 1005: ...HYDRAULIC FLOW IN MANUAL SECOND GEAR 2 TJ TRANSMISSION AND TRANSFER CASE 21 159 SCHEMATICS AND DIAGRAMS Continued...
Страница 1094: ...WELD LOCATIONS DASH COWL AND PLENUM TJ BODY 23 47 SPECIFICATIONS Continued...
Страница 1095: ...DASH COWL AND PLENUM 23 48 BODY TJ SPECIFICATIONS Continued...
Страница 1096: ...DASH COWL AND PLENUM TJ BODY 23 49 SPECIFICATIONS Continued...
Страница 1097: ...DASH COWL AND PLENUM 23 50 BODY TJ SPECIFICATIONS Continued...
Страница 1098: ...DASH COWL AND PLENUM TJ BODY 23 51 SPECIFICATIONS Continued...
Страница 1099: ...DASH COWL AND PLENUM SUPPORTS AND REINFORCEMENTS 23 52 BODY TJ SPECIFICATIONS Continued...
Страница 1100: ...DASH COWL AND PLENUM SUPPORTS AND REINFORCEMENTS TJ BODY 23 53 SPECIFICATIONS Continued...
Страница 1101: ...DASH COWL AND PLENUM SUPPORTS AND REINFORCEMENTS 23 54 BODY TJ SPECIFICATIONS Continued...
Страница 1102: ...DASH COWL AND PLENUM SUPPORTS AND REINFORCEMENTS TJ BODY 23 55 SPECIFICATIONS Continued...
Страница 1103: ...FRONT FLOOR STRAINER REINFORCEMENT AND COWL SIDE LOWER 23 56 BODY TJ SPECIFICATIONS Continued...
Страница 1104: ...FRONT FLOOR STRAINER REINFORCEMENT AND COWL SIDE LOWER TJ BODY 23 57 SPECIFICATIONS Continued...
Страница 1105: ...FRONT FLOOR STRAINER REINFORCEMENT AND COWL SIDE LOWER 23 58 BODY TJ SPECIFICATIONS Continued...
Страница 1106: ...FRONT FLOOR STRAINER REINFORCEMENT AND COWL SIDE LOWER TJ BODY 23 59 SPECIFICATIONS Continued...
Страница 1107: ...SIDE APERTURE 23 60 BODY TJ SPECIFICATIONS Continued...
Страница 1108: ...SIDE APERTURE TJ BODY 23 61 SPECIFICATIONS Continued...
Страница 1109: ...SIDE APERTURE 23 62 BODY TJ SPECIFICATIONS Continued...
Страница 1110: ...SIDE APERTURE TJ BODY 23 63 SPECIFICATIONS Continued...
Страница 1111: ...SIDE APERTURE 23 64 BODY TJ SPECIFICATIONS Continued...
Страница 1112: ...WHEELHOUSE TJ BODY 23 65 SPECIFICATIONS Continued...
Страница 1113: ...WHEELHOUSE 23 66 BODY TJ SPECIFICATIONS Continued...
Страница 1114: ...WHEELHOUSE TJ BODY 23 67 SPECIFICATIONS Continued...
Страница 1115: ...REAR FLOOR PAN AND REINFORCEMENTS 23 68 BODY TJ SPECIFICATIONS Continued...
Страница 1116: ...REAR FLOOR PAN AND REINFORCEMENTS TJ BODY 23 69 SPECIFICATIONS Continued...
Страница 1117: ...REAR FLOOR PAN AND REINFORCEMENTS 23 70 BODY TJ SPECIFICATIONS Continued...
Страница 1118: ...DOOR OUTER PANELS TJ BODY 23 71 SPECIFICATIONS Continued...
Страница 1119: ...DOOR OUTER PANELS 23 72 BODY TJ SPECIFICATIONS Continued...
Страница 1120: ...SEALER LOCATIONS APPLICATION METHODS TJ BODY 23 73 SPECIFICATIONS Continued...
Страница 1121: ...COWL AND PLENUM 23 74 BODY TJ SPECIFICATIONS Continued...
Страница 1122: ...COWL TOP END AND PLENUM TJ BODY 23 75 SPECIFICATIONS Continued...
Страница 1123: ...COWL AND WINDSHIELD OUTER PANEL INNER WHEELHOUSE 23 76 BODY TJ SPECIFICATIONS Continued...
Страница 1124: ...REAR FLOOR RISER AND OUTER BODY SEAMS REAR CORNER PANEL TJ BODY 23 77 SPECIFICATIONS Continued...
Страница 1125: ...HALF DOOR FULL DOOR 23 78 BODY TJ SPECIFICATIONS Continued...
Страница 1127: ...QUARTER WINDOW OPENING 23 80 BODY TJ SPECIFICATIONS Continued...
Страница 1128: ...ENGINE COMPARTMENT TJ BODY 23 81 SPECIFICATIONS Continued...
Страница 1146: ...Fig 10 Vacuum Circuits Heater Only 24 16 HEATING AND AIR CONDITIONING TJ DIAGNOSIS AND TESTING Continued...
Страница 1147: ...Fig 11 Vacuum Circuits Heater A C TJ HEATING AND AIR CONDITIONING 24 17 DIAGNOSIS AND TESTING Continued...