pinpoint JAGUAR XFR 2010 1.G Workshop Manual

PINPOINT TEST D : STEERING COLUMN LOCKED - (MESSAGE DISPLAYED) TEST
CONDITIONS DETAILS/RESULTS/ACTIONS D1: IGNITION SWITCHES OFF AFTER 3 SECONDS NOTES:


Conditions for starting in addition to pressing the start button are
For automatic transmission vehicles, ensure the brake pedal is depressed and the park or neutral selected
If the engine can be heard to crank there is no fault with the smart key
If the locking pin is still engaged, turn the steering wheel to overcome the side load
Start authorisation defined as Ignition functions, Steering column lock engagement, Engine immobilize and smart key
authorisation 1 Unlock the vehicle using the key fob, within 3 minutes of unlocking ensure the steering wheel can rotate freely. Perform a further lock and unlock check and attempt to start vehicle. If the steering 'column locked'
message is still displayed, Lock the vehicle with the key fob and ensure the column is locked (If
installed) by turning the steering wheel. Then unlock the vehicle ensuring the column Steering wheel can
turn freely. Now perform another start attempt Did the engine start?
Yes
No further action required
No
Contact dealer technical support
PINPOINT TEST E : ENGINE STILL NOT CRANKING TEST
CONDITIONS DETAILS/RESULTS/ACTIONS E1: AMBIENT TEMPERATURES BELOW ZERO 1 Hold the start button down for at least 4 seconds while starting the vehicle 2 Switch the ignition on, the passive anti theft system (PATS) LED should now be illuminated. Start the engine, the PATS LED should switch off after 3 seconds Did the engine start? Yes
No further action required
No
Contact dealer technical support

Published: 11-May-2011
Engine Ignition - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Engine Ignition
Diagnosis and Testing

Principles of Operation

For a detailed description of the engine ignition system and operation, refer to the relevant Description and Operation section
of the workshop manual. REFER to: (303-07B Engine Ignition - V8 5.0L Petrol/V8 S/C 5.0L Petrol)

Engine Ignition (Description and Operation), Engine Ignition (Description and Operation), Engine Ignition (Description and Operation).
Inspection and Verification


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.


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

1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection
Mechanical Electrical
Engine oil level
Cooling system coolant level
Fuel level
Fuel contamination/grade/quality
Exhaust gas recirculation (EGR) valves
Fuses
Wiring harness
Loose or corroded electrical connectors
Ignition coils
Sensor(s)
Engine Control Module (ECM)
Transmission Control Module (TCM)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

Symptom Chart

Symptom Possible Causes Action Engine cranks, but does not
fire
Engine breather system
disconnected/restricted
Ignition system
Fuel system
Electronic engine control Ensure the engine breather system is free from restriction
and is correctly installed. Check for ignition system, fuel
system and electronic engine control DTCs and refer to the
relevant DTC Index Engine cranks and fires, but
will not start
Evaporative emissions purge
valve
Fuel pump
Spark plugs
HT short to ground (tracking)
check rubber boots for
cracks/damage
Ignition system Check for evaporative emissions, fuel system and ignition
system related DTCs and refer to the relevant DTC Index Difficult cold start
Engine coolant level/anti-
freeze content
Battery
Electronic engine controls
Exhaust Gas Recirculation
(EGR) valve stuck open
Fuel pump
Purge valve Check the engine coolant level and condition. Ensure the
battery is in a fully charged and serviceable condition.
Check for electronic engine controls, engine emissions, fuel
system and evaporative emissions system related DTCs
and refer to the relevant DTC Index

Published: 11-May-2011
Engine Emission Control - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Engine Emission
Control
Diagnosis and Testing

Principles of Operation

For a detailed description of the engine emission control system and operation, refer to the relevant Description and Operation
section of the workshop manual. REFER to: (303-08C Engine Emission Control - V8 5.0L Petrol/V8 S/C 5.0L Petrol)

Engine Emission Control (Description and Operation), Engine Emission Control (Description and Operation), Engine Emission Control (Description and Operation).
Inspection and Verification


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.


NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection
Mechanical Electrical
Exhaust gas recirculation system
Breather hoses
Positive crankcase ventilation valve
Fuel level
Fuel contamination/grade/quality
Throttle body
Fuses
Loose or corroded electrical connectors
Exhaust Gas Recirculation (EGR) valve
Engine Control Module (ECM)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

Symptom Chart

Symptom Possible Causes Action Difficult to
start cold
Battery
Crankshaft Position (CKP)
sensor
Exhaust Gas Recirculation
(EGR) valve stuck open
Fuel system
Evaporative emissions purge
valve For battery information, CKP sensor, fuel system and purge valve tests,
refer to relevant workshop manual section. Check the EGR valve. Engine stalls
soon after
start
Breather system
disconnected/restricted
Engine Control Module (ECM)
relay
MAF sensor
Ignition system
Air filter restricted
Air leakage
Fuel lines Check the engine breather hoses, PCV, etc. Check the Engine Control
Module (ECM) relay operation. For MAF sensor, ignition system tests, air
intake and fuel line information, refer to relevant workshop manual
section. Poor throttle
response
APP sensor malfunction
TP sensors
ECT sensor
MAF sensor
Transmission malfunction
Traction control event Air
leakage For APP, TP, ECT, MAF sensor tests, intake system checks and
transmission information, refer to relevant workshop manual section.
Check the breather system hoses, PCV, etc.

Published: 11-May-2011
Intake Air Distribution and Filtering - V8 S/C 5.0L Petrol - Intake Air
Distribution and Filtering
Diagnosis and Testing

Principles of Operation

For a detailed description of the intake air distribution and filtering system and operation, refer to the relevant Description and
Operation section of the workshop manual. REFER to: (303-12D Intake Air Distribution and Filtering - V8 S/C 5.0L Petrol)

Intake Air Distribution and Filtering (Description and Operation), Intake Air Distribution and Filtering (Description and Operation), Intake Air Distribution and Filtering (Description and Operation).
Inspection and Verification


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.


NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection
Mechanical Electrical
Hoses and ducts (damage/connections)
Air cleaner element (contaminated/blocked)
Restricted air intake
Supercharger
Supercharger (cooling fan) drive belt
Supercharger seals and gaskets
Charge air coolers (damage/connection)
Mass Air Flow (MAF) sensor
Manifold Absolute Pressure (MAP) sensor
Manifold Absolute Pressure/Temperature (MAPT) sensor
Throttle body
Harness (security/damage)
Connections (security/damage)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

Symptom Chart

Symptom Possible Causes Action Vehicle does not
start/hard
starting/poor
performance
Restricted/Blocked air intake
Restricted/Blocked air
cleaner element Clear the restriction. Replace the air cleaner element as necessary.
Refer to the relevant workshop manual section. Excessive intake
noise
Intake pipe
disconnected/damaged after
the air cleaner
Air cleaner assembly
incorrectly
assembled/damaged Check the intake system and hoses for correct installation/damage.
Refer to the relevant workshop manual section. Lack of boost
Supercharger drive belt
broken/slipping
Supercharger fault
Supercharger air intake fault
Major air leakage (after the
supercharger) Check the supercharger and drive belt. Check the charge air coolers.
Refer to the relevant workshop manual section. Noise
Supercharger drive belt
slipping
Supercharger fault
Major air leakage (after the
supercharger) Check the supercharger and drive belt. Remove the supercharger drive
belt and recheck for noise. Turn the supercharger by hand and check
for excessive resistance. Check for excessive play at the supercharger
pulley. Check the charge air coolers. Refer to the relevant workshop
manual section.

Published: 03-Jun-2014
Evaporative Emissions - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Evaporative
Emissions
Diagnosis and Testing

Principles of Operation

For a detailed description of the Evaporative Emissions system, refer to the relevant Description and Operation section in the
workshop manual.

Inspection and Verification


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 a 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.


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with
an up-to-date 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.
1. Verify the customer concern

2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection
Mechanical Electrical
Fuel filler cap and seal
Fuel filler neck
Fuel pipes
Fuel tank
Evaporative emissions canister
Purge valve
Fuses
Wiring harnesses and connectors
Engine Control Module (ECM)
Purge valve
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index

5. 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
Symptom Chart

Symptom Possible Causes Action Difficulty in filling
fuel tank
Restriction in the vapour line between the fuel tank and the
carbon canister outlet/atmospheric port
Check for
restrictions/damage Fuel smell
System leak
Purge valve inoperative
Check for leaks
Check the purge valve
operation DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00.

Symptom Possible Cause Action No throttle response
Electronic engine controls
Read DTCs and refer to DTC Index in this
section for electronic engine control tests Speed control inhibited or disabled
Default mode enabled
Speed control, brake switch
Electronic engine controls
CAN fault
Check message center for default message,
read DTCs and refer to DTC Index
Refer to the relevant section of the
workshop manual for speed control, and
brake switch tests.
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the relevant section of the
workshop manual and the electrical wiring
diagrams to perform CAN network tests. Poor throttle response
Breather system
disconnected/restricted
Electronic engine controls
Transmission malfunction
Traction control event
Air leakage
Ensure engine breather system is free from
restriction and is correctly installed
Read DTCs and refer to DTC Index in this
section for electronic engine control tests
Refer to the workshop manual or
transmission troubleshooting guide for
transmission system tests.
Check for leakage in air intake system Engine defaults, warning light and
messages. Refer to the owner
handbook
Electronic engine controls
Read DTCs and refer to DTC Index in this
section for electronic engine control tests DTC Index


WARNING: Fuel injector voltage will reach 65Volts during operation and have a high current requirement.


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00.
NOTES:


If the module/component is suspect and the vehicle remains under the Manufacturers warranty, refer to the Warranty
Policy and Procedure manual (section B1.2), 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 five digit codes. Match the five digits from the scan
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information
read by the manufacturer-approved diagnostic system).


When performing electrical 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.

DTC Description Possible Causes Action B10A2-31 Crash Input - No signal
Loss of communication between
Restraints Control Module (RCM)
and Engine Control Module
(ECM) Refer to the electrical circuit diagrams and
check Restraints Control Module (RCM) Pulse
Width Modulated (PWM) SRS signal line circuit,
hard wired connection between Engine Control
Module (ECM) and Restraints Control Module
(RCM) for short to ground, short to power, open
circuit. Repair circuit as required, clear DTC and
retest system to confirm repair.

Visual Inspection

Mechanical Electrical Hydraulic
Damaged/stuck shift mechanism
Damaged automatic transmission casing
Blown fuse(s)
Damaged, loose or corroded connectors
Wiring harness
Fluid level too high/low
Poor condition of fluid
Fluid leak
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.
4. If the cause is not visually evident check for diagnostic trouble codes (DTCs) and refer to the DTC Index.

DTC Index


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00.
NOTES:


If the control module/transmission is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty
Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the
installation of a new module/transmission.


Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information
read by the manufacturer approved diagnostic system).


When performing electrical 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.


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


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.

DTC Description Possible Cause 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 DSC module for stored DTCs P0501-81 Vehicle Speed Sensor A
Vehicle Speed receive Check Anti-lock braking system module for stored Range/Performance invalid DTCs. Check correct Differential is installed to the serial data received over CAN Bus does not
vehicle match Transmission Output-Shaft speed 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 (Transmission 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

DTC Description Possible Cause Action P2764-11 Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low - Circuit
Short to Ground
Torque converter clutch
pressure control solenoid
control Circuit Short to
Ground Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P2764-1A Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low-Circuit
Resistance Below Threshold
Torque converter clutch
pressure control solenoid
control circuit resistance
below threshold Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P2764-1E Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low-Circuit
Resistance Out Of Range
Torque converter clutch
pressure control solenoid
control circuit resistance
out of range Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the
top of the DTC Index P2807-11 Pressure Control Solenoid G
- Circuit Short to Ground
Park solenoid Circuit
Short to Ground Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P2807-12 Pressure Control Solenoid G
- Circuit Short to Battery
Park solenoid Circuit
Short to Power Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P2807-13 Pressure Control Solenoid G
- Circuit Open
Park solenoid Circuit
Open Circuit Suspect the Transmission control module. Install a
new Transmission control module as required, refer to
the new module/component installation note at the top of the DTC Index P2807-14 Pressure Control Solenoid G
- Circuit Short to Ground or
Open
Park solenoid Circuit
Short to Ground or Open
Circuit Carry out any diagnostic pinpoint tests associated
with this DTC using the manufacturer approved
diagnostic system. Suspect the Transmission control
module. Install a new Transmission control module as
required, refer to the new module/component
installation note at the top of the DTC Index B1087-82
LIN Bus "A" - alive /
sequence counter incorrect /
not updated
Alive counter fault Check Transmission Shift Module for stored DTCs.
Refer to the electrical Circuit diagrams and check
Transmission control module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN Bus) B1087-83
LIN Bus "A" - value of signal
protection calculation
incorrect
Checksum error Check Transmission Shift Module for stored DTCs Refer
to the electrical Circuit diagrams and check
Transmission control module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN Bus) B1087-87
LIN Bus "A" - missing
message
GSM is NOT visible to the
Transmission control
module on the LIN Bus Check Transmission Shift Module for stored DTCs Refer
to the electrical Circuit diagrams and check
Transmission control module to Transmission Shift
Module for Short or Open Circuit (LIN Bus) B1087-88 LIN Bus "A" - Bus off
LIN Bus Circuit fault.
Check hardware of LIN
connection between
transmission and GSM Refer to the electrical Circuit diagrams and check
Transmission control module to Transmission shift
module for Short, Open Circuit (LIN Bus). Check
Transmission Shift Module for related DTCs U0001-88
High Speed CAN
Communication Bus - Bus off
CAN Bus off Refer to the electrical Circuit diagrams and check CAN
Bus for Circuit fault U0100-82
Lost Communication With
Engine control module/PCM
"A" - alive / sequence
counter incorrect / not updated
Alive counter fault Check Engine control module for stored DTCs U0100-83
Lost Communication With
Engine control module/PCM
"A" - value of signal
protection calculation
incorrect
Checksum fault Check Engine control module for stored DTCs U0100-87
Lost Communication With
Engine control module/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

Published: 11-May-2011
Exhaust System - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Exhaust System
Diagnosis and Testing

Principle of Operation

For a detailed description of the exhaust system, refer to the relevant Description and Operation section of the workshop
manual. REFER to: (309-00C Exhaust System - V8 5.0L Petrol/V8 S/C 5.0L Petrol)

Exhaust System (Description and Operation), Exhaust System (Description and Operation), Exhaust System (Description and Operation).
Inspection and Verification


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.


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

1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.



3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

Symptom Chart

Symptom Possible Causes Action Excessively
noisy/leaking
exhaust
Exhaust
system/components Inspect exhaust system. Rectify leaks and install new components as
required. Refer to Removal and Installation instructions in this section Loss of power
Restricted exhaust system
Exhaust sound
enhancement valve stuck
closed
Fuel system
Ignition system
Electronic engine control Inspect exhaust system. Install new exhaust components as required.
Refer to Removal and Installation instructions in this section. Check for
fuel, ignition and electronic engine control system DTCs and refer to the
relevant DTC Index
DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged in the Engine Control Module (ECM), please refer to Section
303-14. REFER to:

Electronic Engine Controls (303-14C Electronic Engine Controls - V8 5.0L Petrol, Diagnosis and Testing), Electronic Engine Controls (303-14D Electronic Engine Controls - V8 S/C 5.0L Petrol, Diagnosis and Testing). Mechanical

Leaks
Metal fatigue
Pipes
Catalytic converter
Muffler(s)
Joints
Mountings
Clearance around components Visual Inspection

Published: 28-Jul-2014
Fuel Tank and Lines - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Fuel Tank and
Lines
Diagnosis and Testing

Principle of Operation

For a detailed description of the fuel tank and lines system and operation, refer to the relevant Description and Operation
section of the workshop manual. REFER to: (310-01C Fuel Tank and Lines - V8 5.0L Petrol/V8 S/C 5.0L Petrol)

Fuel Tank and Lines (Description and Operation), Fuel Tank and Lines (Description and Operation), Fuel Tank and Lines (Description and Operation).
Inspection and Verification

WARNINGS:


Eye protection must be worn at all times when working on or near any fuel related components. Failure to follow this
instruction may result in personal injury.


This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling
precautions. Failure to follow this instruction may result in personal injury.


After carrying out repairs, the fuel system must be checked visually for leaks. This should be done after the engine has
been run, but with the engine switched OFF. Failure to follow this instruction may result in personal injury.


If taken internally, DO NOT induce vomiting. Seek immediate medical attention. Failure to follow this instruction may
result in personal injury.


If fuel contacts the eyes, flush the eyes with cold water or eyewash solution and seek medical attention. Failure to follow
this instruction may result in personal injury.


Wash hands thoroughly after handling, as prolonged contact may cause irritation. Should irritation develop, seek medical
attention. Failure to follow this instruction may result in personal injury.
CAUTIONS:


Before disconnecting any part of the system, it is imperative that all dust, dirt and debris is removed from around
components to prevent ingress of foreign matter into the fuel system. Failure to follow this instruction may result in damage to
the vehicle.

It is essential that absolute cleanliness is observed when working with these components. Always install blanking plugs
to any open orifices or lines. Failure to follow this instruction may result in damage to the vehicle.


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:


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


When measuring fuel sender resistance values with a multimeter, it is critical to use the correct multimeter setting. The
multimeter should not be on the 'Auto' setting and must be set to 'Manual'. This will help prevent incorrect diagnosis and
unnecessary replacement of fuel senders. If the multimeter range is set at 'Auto' then, during a sweep of the sender from 50
Ohms to 998 Ohms, the multimeter has to change its measurement range. For approximately 1 second, during the range switch
over point, the multimeter display indicates an open circuit. This can lead to a mis-diagnosis of a fuel sender fault.
1. Verify the customer concern
2. Visually inspect for obvious signs of damage and system integrity