2003 FORD MUSTANG check engine

PINPOINT TEST H: RADIO INTERFERENCE
Component Tests
Battery—Load Test
1. With the engine running, turn the A/C on, the blower motor on high speed and the headlamps on high beam.
2. Increase the engine speed to approximately 2,000 rpm. The voltage should increase a minimum of 0.5 volt above the base voltage.
zIf the voltage does not increase as specified, carry out the Generator On- Vehicle Tests.
For additional information, refer to Generator On- Vehicle Tests in this section.
z If the voltage increases as specified, the charging system is operating normally. NOISE
z
Disconnect: Generator C102c (4.6L 4V) or
C102a (3.8L or 4.6L 2V).
z Key in START position.
z With the engine running, turn the headlights
on, rear defroster on, and the blower motor to
the HI position.
z Is the noise still present? Yes
GO to
G4 .
No
INSTALL a new generator. REFER to
Section 414 - 02 . TEST the system for
normal operation. G4 CHECK GENERATOR FOR MECHANICAL
NOISE z
Key in OFF position.
z Connect: Generator C102c (4.6L 4V) or C102a
(3.8L or 4.6L 2V).
z Key in START position.
z Turn all accessories off. With the engine
running, use a stethoscope or equivalent
listening device to probe the generator for
unusual mechanical noise.
z Is the generator the noise source? Yes
INSTALL a new generator. REFER to
Section 414
- 02 . TEST the system for
normal operation.
No
REFER to Section 303 - 00 to diagnose
the source of engine noise. Test Step Result / Action to Take
H1 VERIFY GENERATOR IS SOURCE OF
RADIO INTERFERENCE z
Key in START position.
z With the engine running, tune the radio to
a station where the interference is present.
z Key in OFF position.
z Disconnect: Generator C102c (4.6L 4V) or
C102a (3.8L or 4.6L 2V).
z Key in START position.
z With the engine running, note any radio
interference.
z Is the interference present with the
generator disconnected? Yes
REFER to
Section 415 - 00 for diagnosis and
testing of the in- vehicle entertainment
system.
No
INSTALL a new generator. REFER to
Section 414 - 02 . TEST the system for normal
operation. Klj . 10 ba
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Battery—
Drain Tests
NOTE: No production vehicle should have more than a 50 mA (0.050 amp) continuous draw.
Check for current drains on the battery in excess of 50 milliamps (0.050 amp) with all the electrical
accessories off and the vehicle at rest. Current drains can be tested with the following procedure:
WARNING: Do not attempt this test on a lead- acid battery that has recently been
recharged. Explosive gases can cause personal injury.
CAUTION: To prevent damage to the meter, do not crank the engine or operate
accessories that draw more than 10A.
NOTE: Many modules draw 10 mA (0.010 amp) or more continuously.
NOTE: Use an in- line ammeter between the battery positive or negative post and its respective cable.
NOTE: Typically, a drain of approximately one amp can be attributed to an engine compartment lamp,
glove compartment lamp, or luggage compartment lamp staying on continually. Other component
failures or wiring shorts may be located by selectively pulling fuses to pinpoint the location of the
current drain. When the current drain is found, the meter reading will fall to an acceptable level. If the
drain is still not located after checking all the fuses, it may be due to the generator.
NOTE: To accurately test the drain on a battery, an in- line digital ammeter must be used. Use of a test
lamp or voltmeter is not an accurate method due to the number of electronic modules.
1. Make sure the junction box/fuse panels are accessible without turning on interior and underhood lights.
2. Drive the vehicle at least five minutes and over 48 km/h (30 mph) to turn on and exercise vehicle systems.
3. Allow the vehicle to sit with the key off for at least 40 minutes to allow modules to time out/power down.
4. Connect a fused jumper wire between the negative battery cable and the negative battery post to prevent modules from resetting and to catch capacitive drains.
5. Disconnect the negative battery cable from the post without breaking the connection of the jumper wire.
6. NOTE: It is very important that continuity is not broken between the battery and the negative
battery cable when connecting the meter. If this happens, the entire procedure must be
repeated.
Connect the tester between the negative battery cable and the post. The meter must be capable
of reading milliamps and should have a 10 amp capability.
7. NOTE: If the meter settings need to be switched or the test leads need to be moved to another
jack, the jumper wire must be reinstalled to avoid breaking continuity.
Remove the jumper wire.
NOTE: Amperage draw will vary from vehicle to vehicle depending on the equipment package.
Compare to a comparable vehicle for reference.
NOTE: No production vehicle should have more than a 50 mA (0.050 amp) draw. Klj . 11 ba
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8. If the draw is found to be excessive, pull fuses from the battery/central junction box one at a
time and note the current drop. Do not reinstall the fuses until you are finished testing.
9. Check the wiring schematic in the wiring diagram for any circuits that run from the battery without passing through the battery/central junction box. Disconnect these circuits if the draw is
still excessive.
Battery— Electronic Drains Which Shut Off When the Battery Cable is Disconnected
1. Repeat the steps of the battery drain testing.
2. Make sure all doors are closed and accessories are off. Without starting the engine, turn the ignition switch to RUN for a moment and then OFF. Wait a few minutes for the illuminated entry
lamps to turn off if equipped.
3. Connect the ammeter and read the amperage draw.
The current reading (current drain) should be less than 50 mA (0.05 amp). If the current drain exceeds
50 mA (0.05 amp) after a few minutes, and if this drain did not show in previous tests, the drain is most
likely caused by an inoperative electronic component. As in previous tests, remove the fuses from the
battery/central junction box one at a time to locate the problem circuit.
Generator On- Vehicle Tests
CAUTION: To prevent damage to the generator, do not make jumper wire connections
except as directed.
CAUTION: Do not allow any metal object to come in contact with the housing and the
internal diode cooling fins with key on or off. A short circuit will result and burn out the diodes.
NOTE: Battery posts and cable clamps must be clean and tight for accurate meter indications.
NOTE: Refer to the Battery Tester Procedure Manual for complete directions for testing the charging
system.
1. Turn off all lamps and electrical components.
2. Place the vehicle in transmission range NEUTRAL and apply the parking brake.
3. Carry out the Load Test and No- Load Test according to the following component tests:
Generator On- Vehicle Tests— Load Test
1. Switch the battery tester to the ammeter function.
2. Connect the positive and negative leads of the battery tester to the corresponding battery terminals.
3. Connect the current probe to the generator B+ output terminal, circuit 38 (BK/OG). Klj . 12 ba
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4. With the engine running, turn the A/C on, the blower motor on high speed and the headlamps
on high beam.
5. Increase the engine speed to approximately 2,000 rpm. The voltage should increase a minimum of 0.5 volt above the base voltage.
zIf the voltage does not increase as specified, carry out the Generator On- Vehicle Tests—
No Load Test. For additional information, refer to Generator On- Vehicle Tests in this
section.
z If the voltage increases as specified, the charging system is operating normally.
6. With the engine running at 2,000 rpm, adjust the tester load bank to determine the output of the generator. Generator output should be at least 58 amps.
Generator On- Vehicle Tests— No Load Test
1. Switch the battery tester to the voltmeter function.
2. Connect the voltmeter positive lead to the generator B+ output terminal, circuit 38 (BK/OG) and the negative lead to ground.
3. Turn all electrical accessories off.
4. With the engine running at 2,000 rpm, check the generator output voltage. The voltage should be between 13.0 and 15.0 volts. If not, refer to the Symptom Chart. Klj . 13 ba
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z
Is the noise eliminated? B4 CHECK GENERATOR
z
Key in OFF position.
z Check the generator by disconnecting
the wiring from the voltage regulator.
z Key in START position.
z Turn on the audio unit and check the
radio reception.
z Is the noise eliminated? Yes
INSTALL a new generator. REFER to
Section 414 - 02 . TEST the system for normal operation.
No
GO to B5 .
B5 CHECK IGNITION CIRCUITS
z
Key in OFF position.
z Check the ignition circuits for correct
routing, grounding, and integrity of
connections.
z Are the ignition components OK? Yes
GO to
B6 .
No
REPAIR the ignition system as necessary. TEST
the system for normal operation. B6 SUBSTITUTE ANTENNA
z
Substitute a known good antenna.
Ground the antenna base to an
unpainted metal surface on the vehicle.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
INSTALL a new antenna. TEST the system for
normal operation.
No
GO to
B7 .
B7 SUBSTITUTE ANTENNA CABLE
z
Key in OFF position.
z Substitute a known good antenna
cable.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
INSTALL a new antenna cable. TEST the system
for normal operation.
No
GO to
B8 .
B8 SUBSTITUTE AUDIO UNIT
z
Key in OFF position.
z Substitute a known good audio unit.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
REMOVE the audio unit and SEND it to an
authorized Ford audio system repair facility.
TEST the system for normal operation.
No
GO to
B9 .
B9 SUBSTITUTE SUBWOOFER
AMPLIFIER z
Key in OFF position.
z Substitute a known good subwoofer
amplifier.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
REMOVE the subwoofer amplifier and SEND it to
an authorized Ford audio system repair facility.
TEST the system for normal operation.
No
GO to
B10 .
B10 REPOSITION COMPONENTS
z
Key in OFF position.
z Determine if the noise can be
eliminated by repositioning the antenna
cable, speaker circuits, or audio unit
power feed circuits away from other
circuits or brackets.
z Key in START position.
z Verify the operation of the audio unit. Yes
Permanently REPOSITION the components as
needed. TEST the system for normal operation.
No
GROUND various parts (for example, engine,
fenders, quarter panels, stone deflectors, body
sheet metal) of the vehicle to the frame using a Klj . 6 ba
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PINPOINT TEST G: THE ANTI - THEFT SYSTEM DOES NOT OPERATE Test Step Result / Action to Take
NOTE:
Large metallic objects, electronic debit transponder devices or a second key on the same
key ring as the PATS ignition key may cause vehicle starting problems and record DTCs under
certain conditions. If a fault cannot be identified, examine the customer's key for such objects or
devices. If present, inform the customer that they need to keep these objects from touching the
PATS ignition key while starting the engine. These objects and devices cannot damage the
PATS ignition key, but can cause a momentary problem if they are too close to the key during
engine start. If a problem occurs, turn ignition OFF and restart the engine with all other objects
on the key ring held away from the ignition key. Check to ensure the encoded ignition key used
by the customer is an approved Ford encoded ignition key (encoded ignition keys from Rotunda,
Ilco, Curtis, or Strattec are approved Ford encoded ignition keys). F1 USE THE DTCS FROM THE INSTRUMENT
CLUSTER SELF- TESTS z
Use the recorded results from the Instrument
Cluster Continuous and On- Demand Self-Tests.
z Is DTC B1600 retrieved? Yes
GO to
F2 .
No
If other DTCs are retrieved, REFER
to Instrument Cluster Diagnostic
Trouble Code (DTC) Index.
If no DTCs are retrieved, system is
OK. F2 PROGRAM A NEW ENCODED IGNITION KEY
z
Key in OFF position.
z NOTE: Check to make sure the customer and
replacement encoded ignition keys are approved
Ford encoded PATS ignition keys. Unapproved
PATS keys do not always operate correctly over
different temperature ranges (encoded ignition
keys from Rotunda, Ilco, or Strattec are approved
encoded ignition keys).
z Cut a new encoded ignition key.
z Key in ON position.
z Program the new encoded ignition key; for
additional information, refer to Key Programming — Erase All Key Codes and Program
Two Keys .
z Enter the following diagnostic mode on the
diagnostic tool: Instrument Cluster On- Demand
Self- Test.
z Is DTC B1600 still present? Yes
GO to
F3 .
No
If no other DTCs are retrieved,
system is OK.
If other DTCs are retrieved, REFER
to Instrument Cluster Diagnostic
Trouble Code (DTC) Index. F3 INSTALL A NEW PATS TRANSCEIVER
z
Key in OFF position.
z Install a new PATS transceiver; for additional
information, refer to Module — Passive Anti - Theft
Transceiver .
z Key in ON position.
z NOTE: Use the customer's original encoded
ignition key, not the encoded ignition key that was
cut in the previous step.
z Enter the following diagnostic mode on the
diagnostic tool: Instrument Cluster On- Demand
Self- Test.
z Is DTC B1600 retrieved? Yes
INSTALL a new instrument cluster;
for additional information, REFER to
Section 413
- 01 . CYCLE the ignition
to RUN using two encoded ignition
keys. Go To Pinpoint Test J to
initialize the module. REPEAT the
self- test. CLEAR the DTCs.
No
System is OK. Klj . 9 ba
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CORRECTLY —
PATS RECEIVED INCORRECT KEY- CODE FROM
IGNITION KEY TRANSPONDER (UNPROGRAMMED ENCODED
IGNITION KEY) Test Step Result / Action to Take
NOTE:
Large metallic objects, electronic debit transponder devices or a second key on the same
key ring as the PATS ignition key may cause vehicle starting problems and record DTCs under
certain conditions. If a fault cannot be identified, examine the customer's key for such objects or
devices. If present, inform the customer that they need to keep these objects from touching the
PATS ignition key while starting the engine. These objects and devices cannot damage the
PATS ignition key, but can cause a momentary problem if they are too close to the key during
engine start. If a problem occurs, turn ignition OFF and restart the engine with all other objects
on the key ring held away from the ignition key. Check to ensure the encoded ignition key used
by the customer is an approved Ford encoded ignition key (encoded ignition keys from Rotunda,
Ilco, Curtis, or Strattec are approved Ford encoded ignition keys). G1 USE THE DTCS FROM THE
INSTRUMENT CLUSTER SELF TESTS z
Use the recorded results from the
Instrument Cluster Continuous
and On- Demand Self- Tests.
z Is DTC B1601 recorded? Yes
GO to
G2 .
No
System is OK. CHECK all customer encoded ignition
keys with Instrument Cluster On- Demand Self-Test to
verify all other encoded ignition keys are programmed. G2 CHECK FOR PROGRAMMED
ENCODED IGNITION KEYS —
MONITOR THE INSTRUMENT
CLUSTER PID NUMKEYS z
Monitor the instrument cluster
PID NUMKEYS.
z Does the instrument cluster
PID NUMKEYS display 8? Yes
ERASE and REPROGRAM the key codes; for
additional information, REFER to
Key Programming —
Erase All Key Codes and Program Two Keys .
REPEAT the self- test. CLEAR the DTCs.
No
GO to G3 .
G3 CHECK THE NUMBER OF
PROGRAMMED ENCODED IGNITION
KEYS AVAILABLE z
Verify there are at least two
currently programmed encoded
ignition keys available with the
vehicle.
z Are at least two currently
programmed encoded ignition
keys available with the vehicle? Yes
GO to
G4 .
No
CUT a new encoded ignition keys so that at least two
encoded ignition keys are available. PROGRAM the
encoded ignition keys; Key Programming — Erase All
Key Codes and Program Two Keys . GO to
G4 .
G4 VERIFY THE INSTRUMENT
CLUSTER PID SPARE_KY INDICATES
ENABLE z
Monitor the instrument cluster
PID SPARE_KY.
z Does the instrument cluster
PID SPARE_KY indicate
ENABLE? Yes
REFER to
Key Programming — Erase All Key Codes
and Program Two Keys . CLEAR the DTCs, REPEAT
the self- testGO to G5 .
No
REFER to Key Programming — Enable/Disable Spare Klj . 10 ba
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PINPOINT TEST H: THE ANTI-
THEFT SYSTEM DOES NOT OPERATE
CORRECTLY — PATS RECEIVED INVALID FORMAT OF KEY- CODE
FROM IGNITION KEY TRANSPONDER (PARTIAL KEY READ) Key Programming to enable the PID SPARE KEY to
ENABLE. TEST the system for normal operation.
Once completed, GO to G5 .
G5 CHECK THE ENCODED IGNITION
KEYS FOR CORRECT OPERATION z
Key in OFF position.
z Key in ON position.
z Start the vehicle using the first
encoded ignition key.
z Key in ON position.
z Start the vehicle with the second
ignition key.
z Key in OFF position.
z Does the vehicle start correctly
using both encoded ignition
keys? Yes
System is OK. If there are additional keys that need to
be programmed, for additional information, REFER to
Key Programming
— Program a Key Using Two
Programmed Keys .
No
GO to G6 .
G6 RETRIEVE THE INSTRUMENT
CLUSTER DTCS — CHECK FOR DTC
B1601 z
Retrieve and document
continuous DTCs.
z Enter the following diagnostic
mode on the diagnostic tool:
Clear Continuous DTCs.
z Carry out a instrument cluster
self- test using both ignition keys
from Step G5.
z Is DTC B1601 retrieved? Yes
INSTALL a new instrument cluster; for additional
information, REFER to
Section 413 - 01 . CYCLE the
ignition to RUN using two encoded ignition keys. GO
to Pinpoint Test J to initialize the vehicle. REPEAT the
self- test. CLEAR the DTCs.
No
System is OK.
If other DTCs are retrieved, REFER to Instrument
Cluster Module Diagnostic Trouble Code (DTC) Index. Test Step Result / Action to Take
NOTE:
Large metallic objects, electronic debit transponder devices or a second key on the same
key ring as the PATS ignition key may cause vehicle starting problems and record DTCs under
certain conditions. If a fault cannot be identified, examine the customer's key for such objects or
devices. If present, inform the customer that they need to keep these objects from touching the
PATS ignition key while starting the engine. These objects and devices cannot damage the
PATS ignition key, but can cause a momentary problem if they are too close to the key during
engine start. If a problem occurs, turn ignition OFF and restart the engine with all other objects
on the key ring held away from the ignition key. Check to ensure the encoded ignition key used
by the customer is an approved Ford encoded ignition key (encoded ignition keys from Rotunda,
Ilco, Curtis, or Strattec are approved Ford encoded ignition keys). H1 USE THE DTCS FROM THE
INSTRUMENT CLUSTER SELF TESTS z
Use the recorded results from the
Instrument Cluster Continuous and
On- Demand Self- Tests.
z Is DTC B1602 retrieved? Yes
GO to
H2 .
No
System is OK. CHECK all customer encoded
ignition keys with Instrument Cluster On- Demand
Self- Test to verify all other keys are programmed. Klj . 11 ba
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