GENERAL INFORMATION
A/C-Heater System Motorist Assurance Program
Standards For Automotive Repair
All Makes and Models
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
The Motorist Assurance Program was formed in 1992 by forty
(40) companies who were concerned about the image of automotive
service establishments. Today, MAP is an industry-wide association
dedicated to strengthening consumer satisfaction with the automotive
repair industry. MAP's participants represent the majority of the
nation's multi-bay retail automotive outlets, their parts and
equipment suppliers, independent repair shops, industry associations,
car companies, manufacturers representatives, and the trade press. MAP
is developing standards of service, uniform inspection procedures
and other programs to assure consumers of the industry's
professionalism and the commitment to excellence shared by MAP's
sponsoring companies.
MAP's achievements to date include production and
distribution (over 280,000) of the consumer brochure "How to Find Your
Way Under the Hood and Around Your Car", development of a Pledge of
Satisfaction to Consumers and Standards of Service and establishment
of relationships with regulatory agencies.
As auto repair becomes an issue for federal and state
regulators, MAP is working to educate government leaders on the
dynamics of automotive service and the self-monitoring efforts MAP has
undertaken on the industry's behalf. MAP's sponsoring companies are
becoming well-known to government representatives as exemplary
businesses working to improve the industry. Media sources also look to
MAP to provide information and advice to consumers and on working with
automotive technicians and repair establishments.
In the next few months, MAP plans to assist member repair
facilities in implementing the MAP Pledge to Customers, establishing
an alternate dispute resolution system to help resolve customer
complaints within the industry, and developing a shop accreditation
program to encourage policies in concert with the MAP Standards of
Service and Inspection Guidelines.
MAP has united the aftermarket behind its consumer-oriented
goals and has established itself both within and outside of the
industry. We welcome you to join us as MAP continues its outreach.
With your support, both the automotive repair industry and your
customers will reap the benefits. Please contact MAP at:
It is MAP policy that all exhaust, brake, ABS, steering and
suspension, wheel alignment, tires and wheels, driveline, engine
performance and maintenance and heating, ventilation and air
conditioning services be offered and performed under the guidelines
and procedures specified in these sections.
Before any service is performed on a vehicle, an inspection
of the appropriate system must be performed. The results of this
inspection must be explained to the customer and documented on an
inspection form. The condition of the vehicle and its components will
indicate what services/part replacements may be required or suggested.
In addition, suggestions may be made to satisfy the needs expressed by
the customer.
This section lists the various parts and conditions that
indicate required or suggested service or part replacement. Although
this list is extensive, it is not inclusive. In addition to this list,
a technician may make a suggestion. This suggestion must be based on
substantial and informed experience or the vehicle manufacturer's
recommended service interval.
Some conditions indicate that service or part replacement is
required because the part in question is no longer providing the
function for which it is intended, does not meet a vehicle
manufacturer's design specification or is missing.
Wednesday, August 25, 1999 07:26PM
* Example: An exhaust pipe has corroded severely and has a hole
in it through which exhaust gases are leaking. Replacement of
the exhaust pipe in this case is required due to functional
failure.
* Example: A brake rotor has been worn to the point where it
measures less than the vehicle manufacturer's specifications.
Replacement of the rotor is required because it does not meet
design specifications.
Some conditions indicate that a service or part replacement
is suggested because the part is close to the end of its useful life
or to address a customer's need, convenience or request. If a
customer's vehicle has one of these conditions, the procedure may only
be to suggest service.
* Example: An exhaust pipe is rusted, corroded or weak, but no
leaks are present. In this case, the exhaust pipe has not
failed. However, there is evidence that the pipe may need
replacement in the near future. Replacement of the pipe may
be suggested for the customer's convenience in avoiding a
future problem.
* Example: The customer desires improved ride and/or handling,
but the vehicle's shocks or struts have not failed. In this
case, replacement may be suggested to satisfy the customer's
* A/C-HEATER SYSTEM UNIFORM INSPECTION GUIDELINES *
wishes. In this case, replacement of the shocks or struts may
not be sold as a requirement.
A customer, of course, has the choice of whether or not a
Shop will service his or her vehicle. He or she may decide not to
follow some of your suggestions. The following reasons may be used for
required and suggested services:
Reasons to Require Repair or Replacement:
* component no longer performs intended purpose
* component does not meet a design specification (regardless of
performance)
* component is missing.
Reasons to Suggest Repair or Replacement
* component is close to the end of its useful life (just above
discard specifications or weak; failure likely to occur soon,
etc.)
* address a customer need, convenience or request (stiffen
ride, enhance performance, eliminate noise, etc.)
* comply with maintenance recommended by the vehicle's Original
Equipment Manufacturer (OEM)
* technician's recommendation based on substantial and informed
experience.
Wednesday, August 25, 1999 07:26PM
HEATING, VENTILATION & AIR CONDITIONING GUIDELINES
* PLEASE READ THIS FIRST *
NOTE: When servicing R-12 Systems it is suggested to use "O" rings,
seals and hose materials which are also compatible with
R-134a in case the vehicle requires retrofitting later
in its life.
COMPRESSOR & CLUTCH ASSEMBLY
COMPRESSOR
ДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Seized ³ Requires replacement ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Inoperative ³ Further inspection ³ Check/service state of
³ required. ³ charge following the
³³ manufacturer's recommended
³³ service procedures. If the
³³ compressor is still
³³ inoperative, require
³³ repair or replacement.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
* A/C-HEATER SYSTEM UNIFORM INSPECTION GUIDELINES *
Noisy ³ Further inspection ³ Check/service oil level and
³ required. ³ state of charge following
³³ manufacturer's recommended
³³ service procedures. If the
³³ compressor is still noisy,
³³ suggest repair or
³³ replacement. Compressor may
³³ be near the end of its
³³ useful life.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged housing ³ Suggest repair or ³ If damage affects proper
³ replacement. ³ operation of system require
³³ replacement.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Leaks ³ Require repair or ³³ replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Missing or ³ Require repair or ³
damaged mounting ³ replacement. ³
brackets/hardware ³³
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Wednesday, August 25, 1999 07:26PM
CLUTCH ASSEMBLY
ДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Inoperative/slips ³ Further inspection ³ Check air gap, belt
³ required. ³ tension, system pressure,
³³ electrical system. Require
³³ repair or replacement
³³ according to manufacturer's
³³ specifications.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Noisy ³ Suggest repair or ³³ replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Seized bearing ³ Require replacement ³³ of bearing. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Burnt coil ³ Require replacement ³³ of coil. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged connector ³ Require repair or ³³ replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged hub ³ Require repair or ³³ replacement of hub. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Will not disengage³ Further inspection ³ Check air gap & electrical
³ required. ³ system. Suggest repair or
³³ replacement.
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДД
* A/C-HEATER SYSTEM UNIFORM INSPECTION GUIDELINES *
IN-LINE FILTER
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Leaking ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Restricted ³ Require replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged connections or fittings ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
REFRIGERANT OIL
REFRIGERANT OIL
ДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Overcharge/ ³ Require service to ³
undercharge ³ manufacturer's ³³ specifications. ³
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Contaminated ³ Suggest replacement.³ Particulate material
³³ (contaminants) may indicate a
³³ need for additional service.
³³ Determine cause of contamination
* A/C-HEATER SYSTEM UNIFORM INSPECTION GUIDELINES *
³³ and repair or replace affected
³³ components as necessary.
³³ Discoloration of oil does not
³³ necessarily indicate a system
³³ problem.
ДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
REFRIGERANT
REFRIGERANT
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Overcharge/undercharge ³ Require service to manufacturer's
³ specifications.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Cross-contamination ³
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ Require service following
Different types of refrigerants ³ manufacturer's procedures and
in the same system ³ specifications.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´
Incompatible refrigerants mixed ³
together ³
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Wednesday, August 25, 1999 07:26PM
AIR DISTRIBUTION
PLENUM/EVAPORATOR CASE/HEATER CASE
ДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked ³ Suggest repair or ³³ replacement. ³
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Air leaks ³ Require repair or ³³ replacement ³
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Restricted ³ Suggest cleaning, ³³ repair or replacement.³
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Odor ³ Further inspection ³ Identify source. Suggest
³ required. ³ cleaning or repair.
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Noisy ³ Further inspection ³ Identify source. Suggest
³ required. ³ cleaning or repair.
ДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Cold water ³ Further inspection ³ Determine source of leak. Leak
leak in ³ required. ³ may be caused due to restricted
passenger ³³ drain tube, cracked evaporator
compartment ³³ case, leaking seal or gasket.
³³ Require repair or replacement.
ДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
* A/C-HEATER SYSTEM UNIFORM INSPECTION GUIDELINES *
³ replacement ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Air flow ³ Further inspection ³ If fins cannot be cleaned
obstruction ³ required. ³ or straightened, require
³³ replacement.
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДД
GENERAL INFORMATION
Anti-Lock Brake System (ABS) Motorist Assurance Program
Standards For Automotive Repair
All Makes and Models
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
The Motorist Assurance Program was formed in 1992 by forty
(40) companies who were concerned about the image of automotive
service establishments. Today, MAP is an industry-wide association
dedicated to strengthening consumer satisfaction with the automotive
repair industry. MAP's participants represent the majority of the
nation's multi-bay retail automotive outlets, their parts and
equipment suppliers, independent repair shops, industry associations,
car companies, manufacturers representatives, and the trade press. MAP
is developing standards of service, uniform inspection procedures
and other programs to assure consumers of the industry's
professionalism and the commitment to excellence shared by MAP's
sponsoring companies.
Wednesday, August 25, 1999 07:27PM
MAP's achievements to date include production and
distribution (over 280,000) of the consumer brochure "How to Find Your
Way Under the Hood and Around Your Car", development of a Pledge of
Satisfaction to Consumers and Standards of Service and establishment
of relationships with regulatory agencies.
As auto repair becomes an issue for federal and state
regulators, MAP is working to educate government leaders on the
dynamics of automotive service and the self-monitoring efforts MAP has
undertaken on the industry's behalf. MAP's sponsoring companies are
becoming well-known to government representatives as exemplary
businesses working to improve the industry. Media sources also look to
MAP to provide information and advice to consumers and on working with
automotive technicians and repair establishments.
In the next few months, MAP plans to assist member repair
facilities in implementing the MAP Pledge to Customers, establishing
an alternate dispute resolution system to help resolve customer
complaints within the industry, and developing a shop accreditation
program to encourage policies in concert with the MAP Standards of
Service and Inspection Guidelines.
MAP has united the aftermarket behind its consumer-oriented
goals and has established itself both within and outside of the
industry. We welcome you to join us as MAP continues its outreach.
With your support, both the automotive repair industry and your
customers will reap the benefits. Please contact MAP at:
808 17th Street, NW
Suite 200
Washington, D.C. 20006
It is MAP policy that all exhaust, brake, ABS, steering
and suspension, wheel alignment, tires and wheels, driveline,
engine performance and maintenance and heating, ventilation and air
conditioning services be offered and performed under the guidelines
and procedures specified in these sections.
Before any service is performed on a vehicle, an inspection
of the appropriate system must be performed. The results of this
inspection must be explained to the customer and documented on an
inspection form. The condition of the vehicle and its components will
indicate what services/part replacements may be required or suggested.
In addition, suggestions may be made to satisfy the needs expressed by
the customer.
This section lists the various parts and conditions that
indicate required or suggested service or part replacement. Although
this list is extensive, it is not inclusive. In addition to this list,
a technician may make a suggestion. This suggestion must be based on
substantial and informed experience or the vehicle manufacturer's
recommended service interval.
Some conditions indicate that service or part replacement
is required because the part in question is no longer providing
the function for which it is intended, does not meet a vehicle
manufacturer's design specification or is missing.
Wednesday, August 25, 1999 07:27PM
* Example: An exhaust pipe has corroded severely and has a hole
in it through which exhaust gases are leaking. Replacement of
the exhaust pipe in this case is required due to functional
failure.
* Example: A brake rotor has been worn to the point where it
measures less than the vehicle manufacturer's specifications.
Replacement of the rotor is required because it does not meet
design specifications.
Some conditions indicate that a service or part replacement
is suggested because the part is close to the end of its useful life
or to address a customer's need, convenience or request. If a
customer's vehicle has one of these conditions, the procedure may
only be to suggest service.
* Example: An exhaust pipe is rusted, corroded or weak, but no
leaks are present. In this case, the exhaust pipe has not
failed. However, there is evidence that the pipe may need
replacement in the near future. Replacement of the pipe may
be suggested for the customer's convenience in avoiding a
future problem.
* Example: The customer desires improved ride and/or handling,
but the vehicle's shocks or struts have not failed. In this
case, replacement may be suggested to satisfy the customer's
wishes. In this case, replacement of the shocks or struts may
not be sold as a requirement.
A customer, of course, has the choice of whether or not a
Shop will service his or her vehicle. He or she may decide not to
follow some of your suggestions. The following reasons may be used for
required and suggested services:
Reasons to Require Repair or Replacement:
* component no longer performs intended purpose
* component does not meet a design specification (regardless of
performance)
* component is missing.
Wednesday, August 25, 1999 07:27PM
Reasons to Suggest Repair or Replacement
* component is close to the end of its useful life (just above
discard specifications or weak; failure likely to occur soon,
etc.)
* address a customer need, convenience or request (stiffen
ride, enhance performance, eliminate noise, etc.)
* comply with maintenance recommended by the vehicle's Original
Equipment Manufacturer (OEM)
* technician's recommendation based on substantial and informed
experience.
BRAKE SERVICE PROCEDURES REQUIRED AND SUGGESTED
FOR PROPER VEHICLE OPERATION
ANTI-LOCK BRAKE SYSTEMS: GENERAL
Anti-lock brake systems are considered an essential part of
brake systems on which they are found .
Anti-lock brake systems are commonly referred to as "ABS"
and will be referred to as "ABS" throughout these guidelines. Some
ABS components also function as part of a traction control system
(TCS). Inspection, diagnostic and service procedures vary. Refer
to appropriate service manuals for vehicle's specific requirements.
WARNING: When diagnosing and servicing high pressure components,
observe safety procedures and equipment requirements
established by the vehicle manufacturer to reduce the
possibility of serious personal injury.
CAUTION: Most manufacturers prohibit the use of DOT 5 brake fluid
in a system equipped with ABS.
NOTE: Intermittent electrical conditions are often caused by a
loss of ground, poor connection, or water intrusion into
the wiring harness.
Electro-magnetic interference (EMI) may be caused by
incorrect installation of accessories or components
which can result in improper system operation.
ABS: WHEEL SPEED OR VEHICLE SPEED SENSORS
ABS: WHEEL SPEED OR VEHICLE SPEED SENSORS
ДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper output ³ Further inspection ³ Component failure may be
signal ³ required. ³ caused by water intrusion
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДД´ into the wiring harness.
Internal ³ Require replacement. ³ Always check insulation
resistance ³³ for damage and wiring
does not meet ³³ for excessive resistance.
specifications ³³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked sensor ³ Require replacement. ³
housing ³³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper routing ³ Require re-routing ³
of lead ³ according to vehicle ³³ manufacturer's ³³ specifications. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged wire lead ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Contamination of ³ Suggest cleaning; ³
surface ³ identify and correct ³³ source. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged or missing³ Require replacement. ³
tip or sensor ³³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Loose ³ Require adjustment ³ Some integral bearing
³ to vehicle manufac- ³ assemblies with sensors
³ turer's specifications.³ may require replacement.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper air gap ³ Require adjustment ³ If a sensor is not
³ to vehicle manufac- ³ adjustable further
³ turer's specifications.³ inspection is required
³³ to identify and correct
³³ cause.
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДД
Wednesday, August 25, 1999 07:27PM
ABS: TOOTHED RING (TONE WHEEL)
ABS: TOOTHED RING (TONE WHEEL)
ДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Teeth damaged ³ Further inspection ³ No action required unless
³ required. ³ ABS system performance is
³³ affected. If performance
³³ is affected, require
³³ replacement.
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Teeth missing or ³ Require replacement. ³
broken ³³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Loose ³ Require replacement ³³ of worn parts. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Contaminated ³ Suggest cleaning, ³³ identify and correct ³³ cause. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Missing ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper alignment³ Require repair or ³³ replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Bent ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Incorrect ³ Require replacement. ³ If the toothed ring
³³ requires replacement and
³³ cannot be replaced as a
³³ separate component,
³³ replace the assembly of
³³ which the ring is a part.
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДД
Out of position ³ Require re-positioning to vehicle manufacturer's
³ specifications.
ДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper output ³ Require replacement.
ДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Loose ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Broken ³ Require replacement.
ДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
ABS: DIGITAL RATIO AXLE CONTROLLER/BUFFER (DRAC OR DRAB)
ABS: DIGITAL RATIO AXLE CONTROLLER/BUFFER (DRAC OR DRAB)
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper calibration ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
No output ³ Require replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Wednesday, August 25, 1999 07:27PM
ABS: HYDRAULIC MODULATORS
NOTE: Many modulators can only be replaced as complete assemblies.
Whenever possible, replace the failed component part.
If replacement of the failed part is not possible then
replace the modulator assembly.
ABS: HYDRAULIC MODULATORS
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Internal leak ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
External leak ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Stuck valve ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Electrical failure ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked housing ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Missing or by-passed ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Improper calibration ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Inoperative ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked housing ³ Suggest replacement. ³ If moisture enters the
³³ controller it can reduce
³³ life expectancy or impair
³³ function.
ДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДД
ABS: WIRING HARNESS
NOTE: Component failure may be caused by water intrusion into the
wiring harness. Always check insulation for damage and wiring
for excessive resistance.
ABS: WIRING HARNESS
ДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Mis-routed ³ Require re-routing to vehicle manufacturer
³ specifications.
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Shorted or open ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Damaged (cut, burned ³
or chaffed) ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Connector and/or ³ Require repair or replacement.
terminal problem ³
(bent, broken, ³
corroded or loose) ³
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Excessive resistance ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Poor ground ³ Require repair or replacement.
ДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Blown fuse/fusible ³ Require identification and correct cause;
link or diode ³ then replace component.
ДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Wednesday, August 25, 1999 07:27PM
ABS:ELECTRICAL PUMP & MOTORS
ABS:ELECTRICAL PUMP & MOTORS
ДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Inoperative ³ Require replacement. ³
ДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Leaking ³ Require repair or ³³ replacement. ³
ДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДД
Excessive run time ³ Further inspection ³ If excessive run time or
³ required. ³ failure to build pressure
ДДДДДДДДДДДДДДДДДДД´ ³ is traced to the pump,
Does not build ³³ require replacement.
pressure ³³
ДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДД
ABS: RELAYS
ДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure ³ Note
ДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Open ³ Require replacement. ³
ДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Shorted ³ Require replacement. ³
ДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Intermittent ³ Require replacement. ³
ДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Missing ³ Require replacement. ³
ДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Cracked housing ³ Suggest replacement. ³ If moisture enters the relay
³³ it can reduce life expectancy
³³ or impair function.
ДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
ABS: TIRES AND WHEELS
ABS: TIRES AND WHEELS
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Condition ³ Procedure
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Incorrect size, diameter or pressure ³ Consult the vehicle owner's
may affect the operation of ABS and ³ manual or vehicle placard for
traction control systems. ³ correct size, speed ratings
³ and inflation pressure of the
³ original tires. Do not exceed
³ the maximum load or inflation
³ capacity of the tire specified
³ by OE.
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
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