instrument cluster FORD MUSTANG 2003 User Guide

DESCRIPTION AND OPERATION
External Controls
The transmission shift cable transfers the transmission operating mode from the gearshift lever to the
automatic transmission (7003). The indicated position of the transmission floor mounted selector lever
is transferred to the transmission through the cable and down to the manual control lever on the
transmission.
Shift Interlock System
The brake/shift interlock mechanism is used on vehicles equipped with an automatic transmission.
This system is used to prevent shifting from PARK unless the brake pedal is depressed. The
brake/shift interlock system consists of an actuator attached to the key interlock assembly and
necessary wiring. The shift lock actuator is energized when the ignition switch is turned to the run
position, locking the floor mounted transmission range selector lever in the PARK position. When the
brake pedal is depressed, the shift lock actuator is deactivated and the floor mounted transmission
range selector lever can be moved out of the PARK position.
Transmission Control Switch (TCS)
The transmission control switch (TCS) is a momentary contact switch that is located on the floor
mounted transmission range selector lever. Pushing the TCS will either disengage or engage the
overdrive function of the automatic transmission. If the OVERDRIVE is disengaged, the word O/D OFF
will illuminate on the instrument cluster.
SECTION 307-
05: Automatic Transaxle/Transmission External Controls 2003 Mustang Workshop Manual Klj . 1 ba
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Pinpoint Tests
PINPOINT TEST A: THE SHIFT INTERLOCK SYSTEM DOES NOT
RELEASE/LOCK CORRECTLY z
The shift control is
out of correct gear
relationship z
Transmission shift
cable and bracket.
z Retainer bracket.
z Shift control linkage
out of adjustment. z
Go To Pinpoint Test B .
z Transmission range
indicator does not
correspond to the
gear z
Transmission shift
cable bracket. z
TIGHTEN the bolts
holding transmission
shift cable bracket.
z Transmission shift
cable loose from the
transmission
retainer bracket. z
TIGHTEN the bolts.
z Shift linkage. zVERIFY digital
transmission range
(DTR) sensor range for
correct adjustment.
REFER to Section 307 -
01 .
z The Transmission
Control Switch (TCS)
Is Inoperative z
CJB Fuse 28 (15A).
z TCS.
z TCS not cycled
during self- test.
z Powertrain control
module (PCM).
z Circuitry. z
Go To Pinpoint Test C .
z The Transmission
Control Indicator
Lamp (TCIL) Is Not
Operating Correctly z
Bulb.
z Instrument cluster.
z Powertrain control
module. z
REFER to Section 413 -
01 .
z Excessive Shift Effort zTransmission shift
cable. z
INSTALL a new
transmission shift cable.
z Cable bracket. zADJUST the cable.
TIGHTEN the screws.
z Transmission Range
Selector Lever Will
Not Shift z
Transmission shift
cable. z
INSTALL a new
transmission shift cable.
z Broken transmission
shift cable. z
INSTALL a new
transmission shift cable. Test Step Result / Action to Take
A1 TEST THE BRAKE LIGHTS
z
Key in ON position.
z Apply the brake pedal and observe the stoplamps.
z Do the stoplamps illuminate? Yes
GO to
A2 .
No
REFER to Section 417 -Klj . 2 ba
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DESCRIPTION AND OPERATION
Instrument Cluster and Panel Illumination
The instrument cluster and panel illumination system illuminates the following components:
zinstrument cluster (10849)
z audio unit (18806)
z A/C- heater control
z fog lamp switch
z transmission range indicator
z traction control switch
z rear window defrost control switch
The instrument cluster is a hybrid electronic cluster (HEC), which uses both hardwired circuitry and the
standard corporate protocol (SCP) communication network to transmit and receive information. The
Mustang instrument cluster backlighting has illumination bulbs that are installed separately from the
instrument cluster. The Cobra instrument cluster has a laminated, electroluminescent applique to
backlight the cluster . The electroluminescent applique and instrument cluster must be installed as an
assembly. SECTION 413-
00: Instrument Cluster and Panel Illumination 2003 Mustang Workshop Manual Klj . 1 ba
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DIAGNOSIS AND TESTING
Instrument Cluster and Panel Illumination
Refer to Wiring Diagrams Cell
71 , Instrument Illumination for schematic and connector information.
Inspection and Verification
NOTE: A new instrument cluster must be reconfigured. Refer to Section 418 - 01 .
NOTE: The instrument panel dimmer switch is a part of the headlamp switch.
1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage.
3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.
Symptom Chart SECTION 413-
00: Instrument Cluster and Panel Illumination 2003 Mustang Workshop Manual Special Tool(s)
73III Automotive Meter
105-
R0057 or equivalent
Visual Inspection Chart Electrical
z
Central junction box (CJB) fuses:
„5 (15A)
„ 21 (5A)
„ 34 (20A)
„ 37 (5A)
„ 32 (15A)
„ 27 (20A)
z Circuitry
z Damaged switch
Symptom Chart Condition
Possible Sources Action
z The control illumination is
inoperative z
Central junction box
(CJB) fuse 37 (5A).
z Circuitry.
z Headlamp switch. z
Go To Pinpoint Test A .
z The instrument cluster
illumination is inoperative z
Circuitry.
z Instrument cluster. z
Go To Pinpoint Test B . Klj . 1 ba
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Pinpoint Tests
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE
PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS
INOPERATIVE z
Bulb(s).
z The climate control
illumination is inoperative z
Circuitry.
z Bulb(s). z
Go To Pinpoint Test C .
z The audio system
illumination is inoperative z
Circuitry.
z Audio unit. z
Go To Pinpoint Test D .
z A single illumination source
is inoperative z
Circuitry.
z Switch. z
Go To Pinpoint Test E .
Test Step Result / Action to Take
A1 CHECK PARKING LAMPS
z
Place the headlamp switch in the ON
position.
z Are the exterior lamps on? Yes
Place the headlamp switch in the OFF position.
GO to
A2 .
No
REFER to Section 417 - 01 .
A2 CHECK HEADLAMP SWITCH
z
Key in OFF position.
z Carry out the headlamp switch
components test;
Refer to Wiring Diagrams Cell 149 for
schematic and connector information.
.
z Is the headlamp switch OK? Yes
RECONNECT the headlamp switch. GO to
A3 .
No
INSTALL a new headlamp switch. REFER to
Section 417 - 01 . TEST the system for normal
operation. A3 CHECK CIRCUIT 1045 (DB/WH)
z
Place the headlamp switch in the ON
position.
z Rotate the instrument panel dimmer
switch to the full illumination position.
z Measure voltage between central
junction box (CJB) fuse 37 (5A) and
ground.
z Is the voltage greater than 10 volts? Yes
REPAIR circuit 19 (LB/RD). TEST the system for
normal operation.
No
REPAIR circuit 1045 (DB/WH). TEST the system
for normal operation.
Test Step Result / Action to Take
B1 CHECK VOLTAGE TO INSTRUMENT CLUSTER
ILLUMINATION z
Disconnect: Instrument Cluster .
z Place the headlamp switch in the ON position.
z Rotate the instrument panel dimmer switch to the full Yes
GO to
B2 . Klj . 2 ba
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PINPOINT TEST C: THE CLIMATE CONTROL ILLUMINATION IS
INOPERATIVE illumination position.
z Measure the voltage between the instrument cluster C220b
pin 4, circuit 19 (LB/RD), harness side and ground.
z Is the voltage greater than 10 volts? No
REPAIR the circuit. TEST
the system for normal
operation.
B2 CHECK GROUND TO INSTRUMENT CLUSTER
z
Place the headlamp switch in the OFF position.
z Measure the resistance between the instrument cluster
C220b pin 1, circuit 1205 (BK), harness side and ground.
z Are the resistances less than 5 ohms? Yes
INSTALL a new instrument
cluster. REFER to
Section 413 - 01 . TEST the system
for normal operation.
No
REPAIR the circuit. TEST
the system for normal
operation. Test Step Result / Action to Take
C1 CHECK VOLTAGE TO CLIMATE CONTROL ILLUMINATION
z
Disconnect: Function Selector Switch C294b .
z Place the headlamp switch in the ON position.
z Rotate the instrument panel dimmer switch to the full
illumination position.
z Measure the voltage between the function selector switch
C294b pin 2, circuit 19 (LB/RD), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
C2 .
No
REPAIR the circuit.
TEST the system for
normal operation. C2 CHECK GROUND TO CLIMATE CONTROL Klj . 3 ba
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REMOVAL AND INSTALLATION
Instrument Cluster Bulb
Removal and Installation
1. Remove the instrument cluster. For additional information, refer to Section 413 - 01 .
2. Remove the necessary instrument cluster bulbs by rotating the bulb one quarter turn counterclockwise and lifting straight out of the instrument cluster.
3. To install, reverse the removal procedure.
SECTION 413-
00: Instrument Cluster and Panel Illumination 2003 Mustang Workshop Manual Klj . 1 ba
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DESCRIPTION AND OPERATION
Instrument Cluster
The instrument cluster (10849) consists of the following components:
Instrument Cluster—
Base 3.8L Engine
SECTION 413-
01: Instrument Cluster 2003 Mustang Workshop Manual Item Part
Number Description
1 — Fuel gauge
2 — Engine coolant temperature gauge
3 — Speedometer
4 — Turn signal/hazard indicator
5 — High beam indicator
6 — Tachometer
7 — Odometer
8 — Trip odometer reset button
9 — Voltmeter gauge
10 — Oil pressure gauge
11 — CHECK FUEL CAP indicator
12 — BRAKE warning indicator
13 — ABS warning indicator
14 — Traction control indicator
15 — Overdrive off (O/D OFF) indicator (automatic Klj . 1 ba
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Instrument Cluster—
Base 4.6L Engine transmission)
16 — LOW FUEL level indicator
17 — SERVICE ENGINE SOON indicator
18 — THEFT indicator
19 — AIR BAG warning indicator
20 — Charging system indicator
21 — Safety belt warning indicator
Item Part
Number Description
1 — Fuel gauge
2 — Engine coolant temperature gauge
3 — Speedometer
4 — Turn signal/hazard indicator
5 — High beam indicator
6 — Tachometer
7 — Odometer
8 — Trip odometer reset button
9 — Voltmeter gauge
10 — Oil pressure gauge
11 — CHECK FUEL CAP indicator
12 — BRAKE warning indicator
13 — ABS warning indicator Klj . 2 ba
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Instrument Cluster—
Cobra 14 — Traction control indicator
15 — Overdrive off (O/D OFF) indicator (automatic
transmission)
16 — LOW FUEL level indicator
17 — SERVICE ENGINE SOON indicator
18 — THEFT indicator
19 — AIR BAG warning indicator
20 — Charging system indicator
21 — Safety belt warning indicator
Item Part
Number Description
1 — Fuel gauge
2 — Engine coolant temperature gauge
3 — Speedometer
4 — Turn signal/hazard indicator
5 — High beam indicator
6 — Tachometer
7 — Odometer
8 — Trip odometer reset button
9 — Boost gauge
10 — Oil pressure gauge
11 — CHECK FUEL CAP indicator
12 — BRAKE warning indicator Klj . 3 ba
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