pinpoint FORD MUSTANG 2003 Workshop Manual

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 concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the
diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
zcheck that the program card is correctly installed.
z check the connections to the vehicle.
z check the ignition switch position.
5. If the diagnostic tool still does not power up, refer to the diagnostic tool operating manual.
6. Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with: zCKT914, CKT915 OR CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418 -
00 .
z NO RESP/NOT EQUIP for the instrument cluster, Go To Pinpoint Test A or for the
generic electronic module (GEM), Go To Pinpoint Test W .
z SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out the self- test diagnostics for the instrument
cluster or the GEM.
7. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index or the GEM Diagnostic Trouble Code Index to continue diagnostics.
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
Instrument Cluster Self- Diagnostic Mode
To enter the instrument cluster self- diagnostic mode, press and hold the instrument cluster
SELECT/RESET button, turn the ignition switch to the RUN position, and then continue pressing the
SELECT/RESET button (five seconds) until tESt is displayed in the odometer. The SELECT/RESET
button must be released within three seconds of the odometer tESt display to begin the self- diagnostic
mode. Press the SELECT/RESET button to advance through the following steps until dtc is displayed.
Depressing the SELECT/RESET button will display any stored continuous DTCs before proceeding to
the next step. z
Engine coolant level
z Accessory drive belt
z Engine oil level
z Parking brake position switch
z Brake fluid level
z Boost gauge pressure line „
5 (15A)
„ 7 (15A)
„ 11 (15A)
„ 13 (15A)
„ 21 (5A)
„ 23 (15A)
„ 24 (30A)
„ 29 (15A)
„ 30 (15A)
„ 32 (15A)
„ 34 (20A)
„ 35 (15A)
„ 37 (5A)
„ 38 (20A)
„ 39 (5A)
z Circuitry Klj . 5 ba
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To exit the instrument cluster self-
diagnostic mode, turn the ignition switch to the OFF position or press
and hold the SELECT/RESET button for three or more seconds and release. z
93- 102 = 6.9- 9.1 volts (low voltage)
z 115- 124 = 8.5- 10.7 volts (norm band start)
z 215- 225 = 15.8- 18 volts (norm band end)
z 230- 241 = 16.9- 19.1 volts (high voltage) rhEo Displays the present decimal rheostat dimming input, 0-
255 (used when requesting
assistance from the hotline). rhi
rhS rho Not used.
Cr Displays the present RUN/START sense input. Display will show -
h for high input with
the ignition switch in the START position and - L for low input with the ignition switch in
the RUN position. PA-
PE7 Not used.
GAGE Repeats test display cycle.
Instrument Cluster Diagnostic Trouble Code (DTC) Index Diagnostic
Tool
Displayed DTC Self-
Diagnostic
Mode Displayed DTC Description Source Action
B1202 9202 Fuel Sender
Open Circuit Instrument
Cluster Go To Pinpoint Test B .
B1204 9204 Fuel Sender
Short to Ground Instrument
Cluster Go To Pinpoint Test B .
B1317 9317 Battery Voltage
High Instrument
Cluster Section 414 - 00 .
B1318 9318 Battery Voltage
Low Instrument
Cluster Section 414 - 00 .
B1342 9342 ECU is Defective Instrument
Cluster INSTALL a new instrument
cluster; REFER to Instrument Cluster in this section. TEST the
system for normal operation. B1343 9343 Heated Backlight
Input Circuit Failure Instrument
Cluster Section 501 - 11 .
B1356 9356 Ignition Run
Circuit Open Instrument
Cluster Go To Pinpoint Test A .
B1364 9364 Ignition Start
Circuit Open Instrument
Cluster Go To Pinpoint Test A .
B2143 A143 Odometer NVM
Mmory Failure Instrument
Cluster Go To Pinpoint Test J .
C1284 5284 Oil Pressure
Switch Failure Instrument
Cluster Go To Pinpoint Test C .
P1197 1197 Mileage Switch
Circuit Failure Instrument
Cluster Go To Pinpoint Test J . Klj . 7 ba
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GEM Diagnostic Trouble Code (DTC) Index
DTC Description Source Action
B1218 Horn Relay Coil Circuit Short to
VBatt GEM REFER to
Section 501 - 14B .
B1312 Lamp Headlamp Input Circuit
Short to Battery GEM REFER to
Section 413 - 09 .
B1317 Battery Voltage High GEM REFER to
Section 414 - 00 .
B1318 Battery Voltage Low GEM REFER to
Section 414 - 00 .
B1322 Driver Door Ajar Circuit Short to
Ground GEM REFER to
Section 417 - 02 .
B1330 Passenger Door Ajar Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1334 Decklid Ajar Rear Door Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1339 Chime Input Request Circuit
Short to Battery GEM REFER to
Section 413 - 09 .
B1340 Chime Input Request Circuit
Short to Ground GEM REFER to
Section 413 - 09 .
B1342 ECU is Defective GEM Clear the DTCs. Retrieve the DTCs. If DTC B1342
is retrieved, INSTALL a new GEM. REFER to Section 419 - 10 .
B1353 Ignition Key-
In Circuit Open GEM REFER to
Section 413 - 09 .
B1359 Ignition Run/Acc Circuit Failure GEM REFER to
Section 211 - 05 .
B1396 Power Door Lock Circuit Short
to Battery GEM REFER to
Section 501 - 14B .
B1397 Power Door Unlock Circuit
Short to Battery GEM REFER to
Section 501 - 14B .
B1405 Driver Power Window Down
Circuit Short to Battery GEM REFER to
Section 501 - 11 .
B1408 Driver Power Window Up
Circuit Short to Battery GEM REFER to
Section 501 - 11 .
B1426 Lamp Safety Belt Circuit Short
to Battery GEM Go To Pinpoint Test K .
B1428 Lamp Safety Belt Circuit Failure GEM Go To Pinpoint Test K .
B1431 Wiper Brake/Run Relay Circuit
Failure GEM REFER to
Section 501 - 16 .
B1432 Wiper Brake/Run Relay Circuit
Short to Battery GEM REFER to
Section 501 - 16 .
B1434 Wiper Hi/Low Speed Relay Coil
Circuit Failure GEM REFER to
Section 501 - 16 .
B1436 Wiper Hi/Low Speed Relay Coil
Circuit Short to Battery GEM REFER to
Section 501 - 16 .
B1438 Wiper Mode Select Switch
Circuit Failure GEM REFER to
Section 501 - 16 .
B1441 Wiper Mode Select Switch
Circuit Short to Ground GEM REFER to
Section 501 - 16 . Klj . 8 ba
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Symptom Chart B1446 Wiper Park Sense Circuit
Failure GEM REFER to
Section 501 - 16 .
B1448 Wiper Park Sense Circuit Short
to Battery GEM REFER to
Section 501 - 16 .
B1450 Wiper Wash/Delay Switch
Circuit Failure GEM REFER to
Section 501 - 16 .
B1453 Wiper Wash/Delay Switch
Circuit Short to Ground GEM REFER to
Section 501 - 16 .
B1458 Wiper Washer Pump Motor
Relay Circuit Failure GEM REFER to
Section 501 - 16 .
B1460 Wiper Washer Pump Motor
Relay Coil Circuit Short to Battery GEM REFER to
Section 501 - 16 .
B1462 Safety Belt Switch Circuit
Failure GEM REFER to
Section 413 - 09 .
B1466 Wiper Hi/Low Speed Not
Switching GEM REFER to
Section 501 - 16 .
B1473 Wiper Low Speed Circuit Motor
Failure GEM REFER to
Section 501 - 16 .
B1476 Wiper High Speed Circuit Motor
Failure GEM REFER to
Section 501 - 16 .
B1551 Decklid Release Circuit Failure GEM REFER to
Section 501 - 14B .
B1553 Decklid Release Circuit Short to
Battery GEM REFER to
Section 501 - 14B .
B1555 Ignition Run/Start Circuit
Failure GEM REFER to
Section 211 - 05 .
B1687 Lamp Dome Input Circuit Short
to Battery GEM REFER to
Section 417 - 02 .
B2486 Parklamp Output Relay Driver
Circuit Failure GEM REFER to
Section 419 - 01 .
B2488 Parklamp Output Relay Driver
Short to Battery GEM REFER to
C1189 Brake Fluid Level Sensor Input
Short Circuit to Ground GEM Go To Pinpoint Test O .
C1223 Lamp Brake Warning Output
Circuit Failure GEM Go To Pinpoint Test O .
C1225 Lamp Brake Warning Output
Circuit Short to Battery GEM Go To Pinpoint Test O .
Symptom Chart Condition
Possible Sources Action
z No communication with
the generic electronic
module (GEM) z
Central junction
box (CJB) fuse
(s):
„7 (15A).
„ 39 (5A).
„ 43 z
Go To Pinpoint Test W Klj . 9 ba
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(20A).
z Battery junction
box (BJB) fuse
12 (40A).
z Circuitry.
z GEM.
z No communication with
the instrument cluster z
Central junction
box (CJB) fuse
(s):
„11
(15A).
„ 21 (5A).
„ 34
(20A).
z Circuitry.
z Standard
corporate
protocol (SCP)
network.
z Instrument
cluster. z
Go To Pinpoint Test A .
z Incorrect fuel gauge
indication z
Circuitry.
z Fuel pump
module.
z Instrument
cluster. z
Go To Pinpoint Test B .
z Incorrect oil pressure
gauge indication z
Circuitry.
z Engine oil
pressure
switch.
z Instrument
cluster. z
Go To Pinpoint Test C .
z Incorrect temperature
gauge indication z
Circuitry.
z Engine coolant
temperature
sensor.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test D .
z Incorrect voltage gauge
indication— except
Cobra z
Circuitry.
z Generator.
z Standard
corporate
protocol (SCP)
network.
z Instrument
cluster. z
Go To Pinpoint Test E .
z Incorrect tachometer
indication z
Standard
corporate
protocol (SCP)
network.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test F .
z Incorrect boost gauge zPressure line. zGo To Pinpoint Test G . Klj . 10 ba
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indication—
Cobra only zInstrument
cluster.
z The LOW FUEL warning
indicator is never/always
on z
LOW FUEL
warning
indicator bulb.
z Standard
corporate
protocol (SCP)
network.
z Instrument
cluster. z
Go To Pinpoint Test H .
z Oil gauge reads normal
with engine off z
Instrument
cluster. z
INSTALL a new instrument
cluster. REFER to
Instrument Cluster in this
section. TEST the system
for normal operation.
z The speedometer is
inoperative z
Standard
corporate
protocol (SCP)
network.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test I .
z The odometer is
inoperative z
Circuitry.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test J .
z The safety belt warning
indicator is inoperative
(chime is
operative)/does not
operate correctly z
Circuitry.
z Generic
electronic
module (GEM).
z Instrument
cluster. z
Go To Pinpoint Test K .
z Inaccurate speedometer
reading z
Instrument
cluster.
z Powertrain
control module
(PCM). z
Go To Pinpoint Test L .
z The O/D OFF indicator
is never on z
Circuitry.
z O/D cancel
switch.
z O/D OFF
indicator bulb.
z Standard
corporate
protocol (SCP)
network.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test M .
z The O/D OFF indicator
is always on z
Circuitry.
z O/D cancel
switch. z
REFER to the Powertrain
Control/Emissions
Diagnosis (PC/ED) Klj . 11 ba
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z
Powertrain
control module
(PCM). manual.
z The CHECK FUEL CAP
INDICATOR is never on z
Circuitry.
z Standard
corporate
protocol (SCP)
network.
z Powertrain
control module
(PCM). z
Go To Pinpoint Test N .
z The CHECK FUEL CAP
INDICATOR is always
on z
Circuitry.
z Powertrain
control module
(PCM).
z Fuel system. z
REFER to the Powertrain
Control/Emissions
Diagnosis (PC/ED)
manual.
z The BRAKE warning
indicator is never/always
on z
Circuitry.
z Low brake fluid
level.
z Brake fluid
level switch.
z Parking brake
switch.
z Instrument
cluster.
z Generic
electronic
module (GEM). z
Go To Pinpoint Test O .
z The charging system
warning indicator is
never/always on z
Circuitry.
z Generator.
z Charging
system warning
indicator bulb.
z Instrument
cluster. z
Go To Pinpoint Test P .
z The high beam indicator
is never/always on z
Circuitry.
z High beam
indicator bulb.
z Instrument
cluster. z
Go To Pinpoint Test Q .
z The air bag warning
indicator is never/always
on z
Circuitry.
z Air bag warning
indicator bulb.
z Instrument
cluster.
z Restraint
control module
(RCM). z
REFER to Section 501 -
20B .
z The anti- lock brake
system (ABS) warning
indicator is never on z
Circuitry.
z ABS warning
indicator bulb.
z Anti- lock brake
control module.
z Instrument
cluster. z
Go To Pinpoint Test R .
z The ABS warning
indicator is always on z
Circuitry.
z Anti- lock brake
control module. z
REFER to Section 206 -
09A or
Section 206 - 09B . Klj . 12 ba
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Pinpoint Tests
PINPOINT TEST A: NO COMMUNICATION WITH THE INSTRUMENT
CLUSTER z
The SERVICE ENGINE
SOON indicator is
never/always on z
Circuitry.
z SERVICE
ENGINE
SOON
indicator bulb.
z Powertrain
control module
(PCM).
z Instrument
cluster. z
Go To Pinpoint Test S .
z The turn/hazard
indicator is never/always
on z
Circuitry.
z Turn/hazard
bulb(s).
z Instrument
cluster. z
Go To Pinpoint Test T .
z The THEFT indicator is
never/always on z
Circuitry.
z THEFT
indicator LED.
z Instrument
cluster. z
REFER to Section 419 - 01 .
z The traction control
indicator is never/always
on z
Circuitry.
z Traction control
switch.
z Standard
corporate
protocol (SCP)
network.
z Powertrain
control module
(PCM).
z ABS module.
z Instrument
cluster. z
Go To Pinpoint Test U .
z The integrated circuit
display is
inoperative/erratic z
Instrument
cluster. z
Go To Pinpoint Test V .
z The instrument cluster is
inoperative z
Central junction
box (CJB) fuse
(s):
„11
(15A).
„ 21 (5A).
„ 34
(20A).
z Circuitry.
z Instrument
cluster. z
Go To Pinpoint Test V .
Test Step Result / Action to
Take Klj . 13 ba
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PINPOINT TEST B: INCORRECT FUEL GAUGE INDICATION A4 CHECK GROUND CIRCUIT 397 (BK/WH) FOR AN OPEN
z
Key in OFF position.
z Measure the resistance between the instrument cluster C220b pin
20, circuit 397 (BK/WH), harness side and ground.
z Is the resistance less than 5 ohms? Yes
GO to
A5 .
No
REPAIR the circuit.
TEST the system
for normal
operation. A5 CHECK GROUND CIRCUIT 1205 (BK) FOR OPEN
z
Measure the resistance between the instrument cluster C220b pin 1,
circuit 1205 (BK), harness side and ground.
z Is the resistance less than 5 ohms? Yes
REFER to
Section 418 - 00 .
No
REPAIR the circuit.
TEST the system
for normal
operation. Test Step Result / Action to
Take B1 CARRY OUT THE INSTRUMENT CLUSTER FUEL GAUGE
ACTIVE COMMAND CAUTION: Use the correct probe adapter(s) when
making measurements. Failure to use the correct probe
adapter(s) may damage the connector. NOTE: Fuel fills of less
than 9.5 liters (2.5 gallons) require at least 10 minutes to update
the fuel gauge indication.
z Key in ON position.
z Select the instrument cluster FUELLEVEL active command.
Trigger, monitor, and scroll FUELLEVEL at: 0% , 50%, and
100%.
z Does the fuel gauge display: below E at 0%, half at 50%, and
F at 100%? Yes
GO to
B2 .
No
GO to B8 .
B2 CHECK THE FUEL GAUGE OPERATION
z
Key in OFF position.
z Disconnect: Fuel Pump Assembly C463.
z Connect one lead of the Instrument Gauge System Tester to the
fuel pump module C463 pin 5, circuit 29 (YE/WH), harness side
and the other lead of the Instrument Gauge System Tester to the Yes
GO to
B3 .
No
GO to B5 . Klj . 15 ba
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PINPOINT TEST C: INCORRECT OIL PRESSURE GAUGE
INDICATION z
Operate the system and verify the concern is still present.
z Is the concern still present? normal operation.
No
The system is
operating correctly at
this time. Concern may
have been caused by
a loose or corroded
connector. CLEAR the
DTCs. REPEAT the
self-
test. Test Step Result / Action to
Take C1 CHECK THE INSTRUMENT CLUSTER OPERATION
CAUTION: Use the correct probe adapter(s) when
making measurements. Failure to use the correct probe
adapter(s) may damage the connector.
z Connect the diagnostic tool.
z Key in ON position.
z Enter the following diagnostic mode on the diagnostic tool:
Instrument Cluster Active Command.
z Trigger the instrument cluster active command OIL GAUGE.
Scroll to 0%, 50%, and 100%.
z Did the gauge display L at 0%, the middle of the gauge at
50%, and H at 100%? Yes
GO to
C2 .
No
GO to C3 .
C2 CHECK CIRCUIT 31 (WH/RD) FOR OPEN OR SHORT TO
GROUND z
Key in OFF position.
z Disconnect: Instrument Cluster C220b.
z Disconnect: Oil Pressure Switch C103.
z Measure the resistances between the instrument cluster C220b
pin 16, circuit 31 (WH/RD), harness side and the oil pressure
switch C103, circuit 31 (WH/RD), harness side; and between the
instrument cluster C220b pin 16, circuit 31 (WH/RD), harness
side and ground.
z Is the resistance less than 5 ohms between the instrument
cluster and the oil pressure switch, and greater than 10,000
ohms between the instrument cluster and ground? Yes
INSTALL a new oil
pressure switch. TEST
the system for normal
operation.
No
REPAIR the circuit.
TEST the system for
normal operation.
C3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
z
Disconnect all instrument cluster connectors. Yes
INSTALL a new Klj . 18 ba
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