2010 JAGUAR XFR check engine

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Steering
Column Lock Module (VIM)
Description and Operation

Steering Column Lock Module (VIM)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault and may also cause additional faults in the vehicle being checked and/or the donor vehicle.
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component.


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer approved diagnostic system).


When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places,
and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into
account.


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.


If DTCs are recorded and, after performing the pinpoint tests a fault is not present, an intermittent concern may be the
cause. Always check for loose connections and corroded terminals.


Where an 'on demand self-test' is referred to, this can be accessed via the 'DTC Monitor' tab on the manufacturers
approved diagnostic system.


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as required.

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Steering Column Lock Module, for
additional Diagnosis and Testing information refer to the relevant Diagnosis and Testing Section.
For additional information, refer to: Steering Column Switches (211-05 Steering Column Switches, Diagnosis and Testing).

DTC Description Possible Causes Action B100D-51
Column Lock
Authorisation - Not
programmed
Module not programmed
Configure the Steering Column Lock Module using the
manufacturers approved diagnostic system B100D-62
Column Lock
Authorisation -
Signal compare
failure
Signal compare failure
- This DTC will be
logged if the
encrypted data
exchange does
not match
between Steering
Column Lock and
the Central
Junction Box
Configure the modules using the manufacturers approved
diagnostic system. If the problem persists, complete a
CAN network integrity test using the manufacturers
approved diagnostic system. Perform an on demand
self-test and retest B100D-64
Column Lock
Authorisation -
Signal plausibility
failure
Signal plausibility failure
Steering Column Lock
unable to perform lock
action
CAN Network fault
Anti-lock Braking
System, Engine Control
Module, Central Junction
Box fault
NOTE: Prior to clearing this DTC, carry out the Vehicle
Functional Reset application using the manufacturer approved
diagnostic system

Check the serviceability of the steering column and lock.
Clear the DTC and retest. If the problem persists, carry
out CAN Network Integrity Test and Module Self Test
using the manufacturer approved diagnostic system.
Alternatively, refer to the electrical circuit diagrams and

DTC Description Possible Causes Action check CAN Network B100D-87
Column Lock
Authorisation -
Missing message
Missing message
CAN fault
No response from
electric steering column
lock control module,
instrument cluster,
central junction box
Battery voltage at
electric steering column
lock control module too
low
Electric steering column
lock control module,
instrument cluster,
central junction box fault
NOTE: Prior to clearing this DTC, carry out the Vehicle
Functional Reset application using the manufacturer approved
diagnostic system

Clear DTC, repeatedly lock and unlock car using the key
fob and retest. Check for related DTCs and refer to the
relevant DTC index
If the fault is cleared, notify the customer that the
steering column lock may fail to unlock if the vehicle is
parked with a high steering angle or with the road wheel
against a curb. If the column lock is failing to disengage,
the customer may be able to rectify this by rotating the
steering wheel while pressing the engine start button
If fault persists, complete a CAN network integrity test
using the manufacturers approved diagnostic system.
Alternatively, refer to the electrical circuit diagrams and
check CAN circuits between the central junction box, the
instrument cluster and the electronic steering column
lock. Refer to the electrical circuit diagrams and check the
central junction box, the instrument cluster and the
electronic steering column lock power and ground supply
circuits for short circuit to ground, short circuit to power,
open circuit, high resistance. Repair circuit(s) as required.
Clear DTC, perform an on demand self-test and retest
If fault persists, check that the vehicle battery supply
voltage is between 9-16 volts. Rectify as required U0001-88
High Speed CAN
Communication
Bus - Bus off
Bus off
Refer to the electrical circuit diagrams and check the
power and ground connections to the module. Using the
manufacturer approved diagnostic system, complete a
CAN network integrity test. Refer to the electrical circuit
diagrams and check the CAN network U0300-00
Internal Control
Module Software
Incompatibility -
No sub type
information
No sub type information
Refer to network communication section of the workshop
manual. Clear the DTC and ensure the vehicle battery
supply voltage is between 9-16Volts. Using the
manufacturers approved diagnostic system, complete a
CAN integrity test. Perform an on demand self-test and
retest U3000-49
Control Module -
Internal electronic
failure
Internal electronic
failure detected during
self test or lock/unlock
operation
Refer to network communication section of the workshop
manual. Clear the DTC and ensure the vehicle battery
supply voltage is between 9-16Volts. Perform an on
demand self-test and if the DTC returns suspect the
electric steering column lock, refer to the warranty policy
and procedures manual if a module/component is suspect U3000-87
Control Module -
Missing message
Configuration message
not received
Refer to the electrical circuit diagrams and check the
power and ground connections to the module. Using the
manufacturer approved diagnostic system, complete a
CAN network integrity test. Refer to the electrical circuit
diagrams and check the CAN network. Check modules are
configured correctly using the manufacturer approved
diagnostic system U3002-81
Vehicle
Identification
Number - Invalid
serial data
received
Invalid vehicle
identification number
Confirm the correct VIN details are stored in Steering
Column Lock Module using the approved diagnostic
system

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index Vehicles With:
6HP28 6-Speed Automatic Transmission, DTC: Transmission Control Module
(TCM)
Description and Operation

Transmission Control Module (TCM) 6 speed (6HP28 Applications)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a
current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent
concern may be the cause. Always check for loose connections and corroded terminals


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as needed

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the transmission control module, for
additional diagnosis and testing information refer to the relevant diagnosis and testing section
For additional information, refer to: Diagnostics (307-01 Automatic Transmission/Transaxle - V8 5.0L Petrol/V8 S/C 5.0L Petrol,
Diagnosis and Testing).

DTC Description Possible Causes Action P0121-86 Throttle/Pedal Position
Sensor A Circuit
Range/Performance -
Signal invalid
Throttle/Pedal Position
Sensor Fault (Data
received over CAN Bus)
Check Engine Control Module for stored DTCs P0219-86
Engine Overspeed
Condition - Signal invalid
Engine speed too low or
too high (Data received
over CAN Bus)
Check Engine Control Module for stored DTCs P0500-81
Vehicle Speed Sensor A -
Invalid serial data
received
Vehicle Speed Sensor
fault (Data received over
CAN Bus)
Check Dynamic Stability Control module for stored
DTCs P0501-81 Vehicle Speed Sensor A
Vehicle Speed receive
Check Dynamic Stability Control module for stored Range/Performance - Invalid serial data over CAN Bus does not DTCs. Check correct Differential is installed to the received match Transmission vehicle Output-Shaft speed

DTC Description Possible Causes Action P0561-1C System Voltage Unstable
- Circuit voltage out of
range
Power supply voltage out
of range when engine
running
Check Engine Control Module for stored DTCs.
Check Charging System and Battery condition P0562-21
System Voltage Low -
Signal amplitude <
minimum
Circuit low voltage.
Battery supply voltage to
Transmission Control
Module
Refer to Circuit diagrams and check Power and
Ground Circuit for fault. Check Engine Control
Module for stored DTCs. Check Charging System
and Battery condition P0563-22
System Voltage High -
Signal amplitude >
maximum
High Battery charge,
alternator fault
Check Engine Control Module for stored DTCs.
Check Charging System and Battery condition P0601-41
Internal Control Module
Memory Check Sum Error
- General checksum
failure
Software error
Transmission Control
Module failure
Re-configure the Transmission Control Module
using the manufacturer approved diagnostic
system, clear DTC and re-test. If DTC remains,
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0604-00
Internal Control Module
Random Access Memory
(RAM) Error - No sub type
information
Shift-by-Wire fault
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0605-41
Internal Control Module
Read Only Memory (ROM)
Error - General checksum
failure
General checksum failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0606-04 TCM Processor - System
Internal Failures
Micro controller
component faults
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0606-26 TCM Processor - Signal
rate of change below
threshold
Micro controller
component faults
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0606-49 TCM Processor - Internal
electronic failure
Micro controller
component faults
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0613-04 TCM Processor - System
Internal Failures
Micro controller
component faults
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0613-06 TCM Processor -
Algorithm Based Failures
Micro controller
component faults
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0613-11 TCM Processor - Circuit
Short to Ground
Watchdog fault
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P0613-12 TCM Processor - Circuit
Short to Battery
Watchdog fault
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect.

DTC Description Possible Causes Action U0100-82
Lost Communication With
ECM/PCM "A" - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Engine Control Module for stored DTCs U0100-83
Lost Communication With
ECM/PCM "A" - Value of
signal protection
calculation incorrect
Checksum fault
Check Engine Control Module for stored DTCs U0100-87
Lost Communication With
ECM/PCM "A" - Missing
message
CAN Timeout
NOTE: Do NOT install a new Engine Control Module
if an Engine Control Module Timeout DTC is only logged in
the Transmission Control Module, the failure is NOT with
the Engine Control Module

Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-82
Lost Communication With
Gear Shift Control Module
A - Alive / sequence
counter incorrect / not updated
Alive counter fault
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-83
Lost Communication With
Gear Shift Control Module
A - Value of signal
protection calculation
incorrect
Checksum fault
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0103-87
Lost Communication With
Gear Shift Control Module
A - Missing message
CAN Timeout
Check Transmission Shift Module for stored DTCs.
Check CAN Bus Circuit for fault U0122-82
Lost Communication With
Vehicle Dynamics Control
Module - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0122-83
Lost Communication With
Vehicle Dynamics Control
Module - Value of signal
protection calculation
incorrect
Checksum fault
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0122-87
Lost Communication With
Vehicle Dynamics Control
Module - Missing message
CAN Timeout
Check Dynamic Stability Control (ABS) for stored
DTCs. Check CAN Bus Circuit for fault U0126-00
Lost Communication With
Steering Angle Sensor
Module - No sub type
information
Lost Communication With
Steering Angle Sensor
Module
Check SAS for stored DTCs. Check CAN Bus Circuit
for fault U0128-87
Lost Communication With
Park Brake Control
Module - Missing message
CAN timeout electronic
parking brake module
Check Electronic Parking Brake Module (EPB) for
stored DTCs. Check CAN Bus Circuit for fault U0140-82
Lost Communication With
Body Control Module -
Alive / sequence counter
incorrect / not updated
Alive counter fault
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0140-83
Lost Communication With
Body Control Module -
Value of signal protection
calculation incorrect
Checksum fault
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0140-87
Lost Communication With
Body Control Module -
Missing message
CAN Timeout
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U0155-87
Lost Communication With
Instrument Panel Cluster
(IPC) Control Module - Missing message
CAN timeout instrument
cluster
Check Instrument Cluster for stored DTCs. Check
CAN Bus Circuit for fault U0300-68
Control Module - Event
information
Transmission software
does not match vehicle
network
Check Central Junction Box software level, Check
Transmission Control Module Software level,
Update software as required using the
manufacturer approved process

DTC Description Possible Causes Action U0401-08
Invalid Data Received
From ECM/PCM A - Bus
Signal Message Failures
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs,
Check CAN Bus circuit for faults U0401-68
Invalid Data Received
from ECM/PCM A - Event
information
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0401-86
Invalid Data Received
from ECM/PCM A - Signal
Invalid
Inaccurate engine speed,
torque information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0404-68
Invalid Data Received
from Gear Shift Control
Module A - Event
information
Incorrect CAN data
received from
Transmission Shift
Module
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U0404-81
Invalid Data Received
from Gear Shift Control
Module A - Invalid Serial
Data Received
Incorrect LIN data
received from
Transmission Shift
Module
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U0416-68
Invalid Data Received
From Vehicle Dynamics
Control Module - Event
information
Event information brake
information
Check Engine Control Module for stored DTCs.
Check CAN Bus Circuit for fault U0422-68
Invalid Data Received
From Body Control
Module - Event
information
Event information invalid
Power mode information
Check Central Junction Box for stored DTCs. Check
CAN Bus Circuit for fault U101B-87
Lost Communication With
GSM - Multiple Bus -
Missing message
Missing message lost
communication with
Transmission Shift
Module (multiple Bus)
Check Transmission Shift Module for stored DTCs.
Refer to Circuit diagrams and check CAN and LIN
Bus for Circuit fault U3000-49
Control Module - Internal
electronic failure
Internal electronic failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. U3000-4B
Control Module - Circuit
resistance above
threshold
Internal electronic failure
Check and correct oil level. Check hydraulic flow
through oil cooler and pipe circuit for restriction or
blockage. If no restrictions found, suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. U3000-81
Control Module - Invalid
serial data received
Vehicle or Engine type
signal incorrect from
Central Junction Box or
incorrect Transmission
Control Module software
installed
Reflash the Transmission Control Module using the
manufacturer approved process U3001-94
Control Module Improper
Shutdown - Unexpected
operation
Control Module Improper
Shutdown (voltage
related)
Check Engine Control Module For Power
(alternator) faults. Check Power and Ground
Circuit and Battery for fault. Clear DTCs. Road
Test. If DTC reoccurs suspect the Transmission
Control Module. Install a new Transmission Control
Module as required, refer to the warranty policy
and procedures manual if a module/component is
suspect.

Y 5.0L Supercharged Brazil 2 3.0L Diesel *1 EU and *2 With DPF 3 3.0L Diesel *1 EU 4 3.0L Diesel *1 EU and *2 With DPF 5 3.0L Diesel *4 ROW, *5 Emergent World, *3 With-out DPF, Japan and *6 Hot Climate #( ) 3.0L Gasoline EU4 is compliant with european emission requirements until December 2010.

Engine Emission System - 2012 model year

VIN Position 5
NOTES:


*1 EU. Includes the following markets; Andorra, Austria, Belgium, Bulgaria, Chile(diesel only), Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, India (gasoline only), Ireland, Italy, Latvia,
Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino,
Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, UK; (Canary Islands, Azores, Madeira, Martinique, Guadeloupe,
Reunion are included as remote parts of sovereign states).


*2 With DPF, Australia, Belarus, Gibraltar, Hong Kong, Iceland, Israel, Korea (diesel only), Macau, Morocco, New Zealand,
Palestine, Singapore (diesel only), South Africa (Diesel), Taiwan, Tunisia


*3 With-out DPF, Argentina, Bermuda, Chile (gasoline only), China, Guadeloupe, India (diesel only), Kazakhstan, Mexico
(diesel only), Morocco, Ukraine, Russia.


*4 Rest Of World (ROW), includes the following markets; Barbados, Benin, Botswana, Burkina Faso, Burundi, Brunei,
Cameroon, Central African Republic, Chad, Congo, Costa Rica, Democratic Republic of Congo, Dominican Republic, Equatorial
Guinea, Ethiopia, Falklands, Fiji, Gabon, Gambia, Ghana, Guatemala, Guinea, Guinea Bissau, Guyana, Haiti, Honduras, Ivory
Coast, Lesotho, Liberia, Madagascar, Malawi, Mali, Mozambique, Mauritania, Namibia, New Caledonia, Niger, Panama, Papua
New Guinea, Rwanda, Sierra Leone, Singapore (gasoline only),Somalia, Swaziland, Tahiti, Tanzania, Togo, Trinidad & Tobago,
Uganda, Western Sahara, Zambia, Zimbabwe.


*5 Emergent World, With-out OBD, includes the following markets; Albania, Angola, Bolivia, Colombia, Ecuador, Georgia,
Indonesia, Jamaica, Kenya, Kyrgystan, Macedonia, Malaysia, Mauritius, Nigeria, Paraguay, Peru, Philippines, South Africa
(gasoline only), Sri Lanka, Turkmenistan, Uruguay, Uzbekhistan, Venezuela, Vietnam.


*6 Hot Climate, With-out OBD, includes the following markets; Algeria, Azerbaijan, Bahrain, Bangladesh for gasoline,
Bhutan, Dubai, Egypt, Iraq, Jordan, Kuwait, Lebanon (gasoline only), Libya, Oman, Pakistan, Qatar, Saudi Arabia, Sudan, Syria
(gasoline only), Thailand, Tunisia, United Arab Emirates, Yemen.
B 5.0L USA, Canada, Mexico and Korea C 5.0L Supercharged USA, Canada, Mexico and Korea D 3.0L *4 ROW, *5 Emergent World and *6 Hot Climate E 5.0L Supercharged USA, Canada, Mexico and Korea F 5.0L *4 ROW, *5 Emergent World and *6 Hot Climate G 5.0L Supercharged *4 ROW, *5 Emergent World and *6 Hot Climate H 3.0L *2 With DPF, *3 With-out DPF and Japan J 5.0L Supercharged *1 EU, *2 With DPF, *3 With-out DPF and Japan K 5.0L Supercharged Brazil L 5.0L Supercharged *4 ROW, *5 Emergent World and *6 Hot Climate P 5.0L *1 EU, *2 With DPF, *3 With-out DPF and Japan R 5.0L Supercharged *1 EU, *2 With DPF, *3 With-out DPF and Japan T 2.2L Diesel *1 EU and *2 With DPF W 3.0L Brazil X 5.0L Brazil Y 5.0L Supercharged Brazil 2 3.0L Diesel *1 EU and *2 With DPF 4 3.0L Diesel *1 EU and *2 With DPF 5 3.0L Diesel *4 ROW, *5 Emergent World, *3 With-out DPF, Japan and *6 Hot Climate 6 2.2L Diesel *1 EU and *2 With DPF Check Digit

VIN Position 6
VIN Code Description 0 - 9 or X Calculated in accordance with American standard CFR part 565 www.JagDocs.com

Published: 11-May-2011
Noise, Vibration and Harshness - Noise, Vibration and Harshness (NVH)
Description and Operation

Noise, vibration and harshness (NVH) is becoming more important as vehicles become more sophisticated and passenger
comfort levels increase. This section is designed to aid in the diagnosis, testing and repair of NVH concerns.

Noise is defined as sounds not associated with the operation of passenger compartment equipment that interface with
customer satisfaction.
Vibration is defined as impulses felt by the customer that are not caused by road surface changes.
Harshness is a ride quality issue where the customer feels that the vehicle response to the road surface is sharply
transmitted to the customer.

Diagnostic Theory

Diagnosis is more than just following a series of interrelated steps in order to find the solution to the specific condition. It is a
way of looking at systems that are not functioning the way they should and finding out why. Also it is knowing how the system
should work and whether it is working correctly.

There are basic rules for diagnosis. If these rules are followed, the cause of the condition is usually found the first time
through the system.

Know the System

Know how the parts go together.
Know how the system operates as well as its limits and what happens when the system goes wrong.
Sometimes this means checking the system against one that is known to be working correctly.

Know the History of the System
A clue in any one of these areas may save time:
How old or new is the system?
What kind of treatment has it had?
Has it been repaired in the past in such a manner that might relate to the present condition?
What is the repair history?

Know the History of the Condition

Did it start suddenly or appear gradually?
Was it related to some other occurrence such as a collision or previous part renewal?
Know how the condition made itself known; it may be an important clue to the cause.

Know the Probability of Certain Conditions Developing

Look for the simple rather than the complex.
For example:
- Electrical conditions usually occur at connections rather than components.
- An engine no-start is more likely to be caused by a loose wire or small adjustment rather than a sheared-off
camshaft.
Know the difference between impossible and improbable. Certain failures in a system can be improbable but still
happen.
New parts are just that, new. It does not mean they are always good functioning parts.

Do Not Cure the Symptom and Leave the Cause

Lowering the pressure in a front tire may correct the condition of a vehicle leaning to one side, but it does not correct the
original condition.

Be Positive the Cause is Found

Double check the findings.
What caused a worn component?
A loose transmission or engine mount could indicate that other mounts are also loose.

Diagnostic Charts

Charts are a simple way of expressing the relationship between basic logic and a physical system of components. They help
discover the cause of a condition in the least time. Diagnostic charts combine many areas of diagnosis into one visual display:
probability of certain things occurring in a system
speed of checking certain components or functions before others
simplicity of carrying out certain tests before others
elimination of checking huge portions of a system by carrying out simple tests
certainty of narrowing down the search to a small portion before carrying out in-depth testing
The fastest way to find a condition is to work with the tools that are available. This means working with proven diagnostic
charts and the correct special equipment for the system.