Pinpoint Tests
PINPOINT TEST A: NO COMMUNICATION WITH THE MODULE — INSTRUMENT CLUSTER
The LOW FUEL warning indicator is never/always
on
Bulb.
Instrument cluster.
GO to
Pinpoint Test D
.
Incorrect oil pressure gauge indication
Circuitry.
Engine pressure switch.
Instrument cluster.
GO to
Pinpoint Test E
.
Oil gauge reads normal with engine off
Instrument cluster.
INSTALL a new instrument cluster; REFER to
Instrument Cluster
. CLEAR the DTCs. REPEAT the
self-test.
Incorrect temperature gauge indication
Circuitry.
Instrument cluster.
PCM.
Engine coolant temperature
sensor.
GO to
Pinpoint Test F
.
A gauge is inoperative — speedometer/tachometer
Instrument cluster.
Circuitry (SCP Network).
PCM.
GO to
Pinpoint Test G
.
The odometer is inoperative
Circuitry.
PCM.
Instrument cluster.
GO to
Pinpoint Test H
.
The safety belt indicator is inoperative (chime is
operative)/does not operate correctly
Instrument cluster.
Circuitry.
GEM.
GO to
Pinpoint Test I
.
An indicator is inoperative/always on — O/D OFF
Circuitry.
O/D cancel switch.
Bulb.
Instrument cluster.
PCM.
GO to
Pinpoint Test J
.
An indicator is inoperative/always on — low engine
coolant
Circuitry.
Bulb.
Low engine coolant switch.
Go to
Pinpoint Test K
.
The BRAKE warning indicator is never/always on.
Low brake fluid level.
Brake fluid level switch.
Parking brake switch.
Circuitry.
Instrument cluster.
GEM.
GO to
Pinpoint Test L
.
The charge system warning indicator is
never/always on
Circuitry.
Generator (GEN) (10300).
Bulb.
Instrument cluster.
GO to
Pinpoint Test M
.
An indicator is inoperative/always on — high beam
Circuitry.
Bulb.
Instrument cluster.
GO to
Pinpoint Test N
.
An indicator is inoperative/always on — air bag
warning
Circuitry.
Bulb.
Instrument cluster.
RCM.
REFER to
Section 501-20B
.
An indicator is inoperative/always on — ABS
warning
Circuitry.
Bulb.
Instrument cluster.
Anti-lock brake control module.
GO to
Pinpoint Test O
.
An indicator is inoperative/always on — SERVICE
ENGINE SOON
Circuitry.
Bulb.
Instrument cluster.
PCM.
GO to
Pinpoint Test P
.
An indicator is inoperative/always on — turn/hazard
Circuitry.
Bulb(s).
Instrument cluster.
GO to
Pinpoint Test Q
.
An indicator is inoperative/always on — THEFT
Circuitry.
LED.
Instrument cluster.
REFER to
Section 419-01
.
The integrated circuit display is inoperative/erratic
Instrument Cluster.
CARRY OUT HEC dealer test Mode.
An indicator is inoperative/always on — traction
control indicator
Circuitry.
Traction control switch.
Instrument cluster.
ABS module.
PCM.
GO to
Pinpoint Test R
.
Incorrect voltage gauge indication
Circuitry.
Generator.
Instrument cluster.
GO to
Pinpoint Test S
.
Inaccurate speedometer reading
Instrument Cluster
PCM
GO to
Pinpoint Test T
.
Incorrect tachometer indication
Instrument cluster.
PCM.
GO to
Pinpoint Test U
.
CONDITIONS
DETAILS/RESULTS/ACTIONS
A1
CHECK THE BATTERY POWER SUPPLY TO THE INSTRUMENT CLUSTER
Page 8 of 32
1999 Mustang Workshop Manual
1/18/2013
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSXB/~MUS~LEN/20/...
