1988 JEEP CHEROKEE sensor

winter tires power steering fluid gearbox airbag off timing belt octane

Page 96 of 1378

JEEP CHEROKEE 1988 Service Repair Manual mm Millimeters

M/T Manual Transaxle or Transmission

MA PFI Mass Air Sequential Port Fuel Injecti

mm Millimeters

M/T Manual Transaxle or Transmission

MA PFI Mass Air Sequential Port Fuel Injection system

MA or MAF Mass Airflow

MAF Mass Air Flow sensor

MAFS Mass Airflow Sensor

MAP Manifold Absolute Pressure sensor

MAT Manifold Air Temperature

MCU Microprocessor Control Unit

MCV Mixture Control Valve

MEM-CAL Memory Calibration Chip

MFI Multiport Fuel Injection

MIL Malfunction Indicator Light

MLP Manual Lever Position

MPFI Multi Point Fuel Injection

MPH Miles Per Hour

MPI Multi-Point (Fuel) Injection

Man. Manual

Mech. Mechanical

Mem. Memory

Mtr. Motor

\
\
\
\
\
\
\
\f

"N" ABBREVIATION TABLE
"N" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

N.m Newton-Meter

NA Not Available

NDS Neutral Drive Switch

NGS Neutral Gear Switch

NOx Oxides of Nitrogen

NPS Neutral Pressure Switch

No. Number

Nos. Numbers

\
\
\
\
\
\
\
\f

"O" ABBREVIATION TABLE
"O" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

O Oxygen

O.D. Outside Diameter

O/S Oversize

O2 Oxygen

OC Oxidation Catalyst

OCC Output Circuit Check

OD Overdrive

ODO Odometer

OHC Overhead Camshaft

ORG Orange

OSC Output State Check

Opt. Option or Optional

oz. Ounce

ozs. Ounces

\
\
\
\
\
\
\
\f

Page 97 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual "P" ABBREVIATION TABLE "P" ABBREVIATION TABLE�\ \ \ \ \ \ \$

"P" ABBREVIATION TABLE
"P" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

"P" Park

P/C Printed Circuit

P/N Park/Neutral

P/S Power Steering

PAV Pulse Air Valve

PC-SOL Purge Control Solenoid

PCM Powertrain Control Module

PCS Purge Control Solenoid

PCSDM Passenger Compartment Sensor/Diagnostic Module

PCV Positive Crankcase Ventilation

PFE Pressure Feedback EGR sensor or circuit

PFI Port Fuel Injection (see MA SEFI)

PGM-CARB Programmed Carburetor

PGM-FI Programmed Fuel Injection

PIP Profile Ignition Pickup

PNK Pink

PPL Purple

PRNDL Park Reverse Neutral Drive Low

PROM Programmable Read-Only Memory

psi Pounds Per Square Inch

PSPS Power Steering Pressure Switch

PTC Positive Temperature Coefficient

PTO Power Take-Off

PWR GND Power Ground circuit

Pkg. Package

Press. Pressure

Prog. Programmed or Programmable

Pts. Pints

Pwr. Power

\
\
\
\
\
\
\
\f

"Q" ABBREVIATION TABLE
"Q" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

Qts. Quarts

\
\
\
\
\
\
\
\f

"R" ABBREVIATION TABLE
"R" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

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

Page 98 of 1378

JEEP CHEROKEE 1988 Service Repair Manual RVB Rear Vacuum Break

RWAL Rear Wheel Anti-Lock Brake

RWD Rear Wheel Drive

RVB Rear Vacuum Break

RWAL Rear Wheel Anti-Lock Brake

RWD Rear Wheel Drive

Recirc. Recirculate or Recirculation

Reg. Regulator

Rly. Relay

\
\
\
\
\
\
\
\f

"S" ABBREVIATION TABLE
"S" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

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

\
\
\
\
\
\
\
\f

"T" ABBREVIATION TABLE
"T" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

T.V. Throttle Valve

TAB Thermactor Air By-Pass

TAC Thermostatic Air Cleaner

TAD Thermactor Air Diverter

TAN Tan

TBI Throttle Body Injection

Page 99 of 1378

JEEP CHEROKEE 1988 Service Repair Manual TCC Torque Converter Clutch

TCCS Toyota Computer Control System

TDC Top Dead Center

TCC Torque Converter Clutch

TCCS Toyota Computer Control System

TDC Top Dead Center

TDCL Total Diagnostic Communication Link

TFI Thick Film Ignition system

TGS Top Gear Switch (cancels SIL in top gear)

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

\
\
\
\
\
\
\
\f

"V" ABBREVIATION TABLE
"V" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

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 volts)

VREF Voltage Reference (ECA supplied reference voltage

VRV Vacuum Regulator Valve

VSC Vehicle Speed Control sensor or signal

VSS Vehicle Speed Sensor or signal

VSV Vacuum Switching Valve

Vac. Vacuum

Volt. Voltage

\
\
\
\
\
\
\
\f

"W" ABBREVIATION TABLE
"W" ABBREVIATION TABLE\
\
\
\
\
\
\

ABBREVIATION DEFINITION

\
\b\
\
\
\
\
\

W/ With

W/O Without

WAC WOT A/C Cut-off switch or circuit

WAC Wide Open Throttle A/C Switch

WHT White

WOT Wide Open Throttle

YEL Yellow

Page 118 of 1378

JEEP CHEROKEE 1988 Service Repair Manual HEATER HOSES
HIGH PRESSURE RELIEF VALVES (HPRV)
IDLERS
IN-LINE FILTERS
METAL FITTINGS
METAL LINES
MIX AND AIR CONTROL DOORS (BLEND

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

Page 145 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual ��\ ��\ ��\ ��\ ��\ ��\ ��\ �� Condition Code$

\
\
\
\
\
\
\

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.
\
\
\
\
\
\
\

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\
\
\
\
\
\
\

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

Page 151 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Alignment incorrect ..... B .. Require repair or replacement.
Application incorrect ... B ............ Require replacement.
Attaching hardware
broken ................. A ... Require repai

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.
\
\
\
\
\
\
\

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
\
\
\
\
\
\
\

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.

Page 177 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual \003 AIR C LE A N ER - T H ER M OSTA TIC 1988 J e ep C hero ke e 1988 Exhaust Emission Systems JEEP THERMOSTATIC AIR CLEANER DESCRIPTION On models equipped$

Load next 8 pages

Page: < prev 1-10 ... 9-16 17-24 25-32 33-40 41-48 49-56 57-64 65-72 ... 232 next >

wheelbase headrest mirror controls torque brake rotor remove seats