System Tests: Notes

Symptom	Perform Test
AIR BAG Indicator Inoperative/Always On	(1)
THEFT Indicator Inoperative/Always On	(2)
Oil Gauge Reads Normal With Ignition Off	(3)
Single Gauge Does Not Return To Zero With Ignition Off	(3)
No Communication With Instrument Cluster Module	A
Instrument Cluster Module Inoperative	B
Incorrect Fuel Gauge Indication	C
Low Fuel Indicator Inoperative/Always On	D
Incorrect Oil Pressure Gauge Indication	E
Incorrect Temperature Gauge Indication	F
Speedometer Inoperative	G
Odometer Inoperative	H
Incorrect Speedometer Indication	I
Incorrect Tachometer Indication	J
Incorrect Voltage Gauge Indication	K
Safety Belt Indicator Inoperative/Does Not Operate Properly (Chime Operates)	L
O/D OFF Indicator Inoperative/Always On	M
CHECK FUEL CAP Indicator Inoperative/Always On	N
BRAKE Indicator Inoperative/Always On	O
Charge System Indicator Inoperative/Always On	P
High Beam Indicator Inoperative/Always On	Q
ABS Indicator Inoperative/Always On	R
SERVICE ENGINE SOON Indicator Inoperative/Always On	S
Turn Signal/Hazard Indicator Inoperative/Always On	T
Traction Control Indicator Inoperative/Always On	U
Key-In-Ignition Warning Chime Does Not Operate Properly	V
Air Bag Warning Chime Does Not Operate Properly	W
Door Ajar Warning Chime Does Not Operate Properly	X
Headlight Warning Chime Does Not Operate Properly	Y
Seat Belt Warning Chime Does Not Operate Properly	Z
No Communication With Generic Electronic Module	AA
Control Illumination Inoperative	AB
Instrument Cluster Module Illumination Inoperative	AC
Heating Ventilation Air Conditioning Controller Illumination Inoperative	AD
(1) See appropriate AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS. (2) See TEST B: THEFT INDICATOR IS ALWAYS/NEVER ON-THEFT INDICATOR WILL NOT PROVE OUT under SYSTEM TEST in PASSIVE ANTI-THEFT SYSTEMS - MUSTANG article. (3) Replace instrument cluster module. See INSTRUMENT CLUSTER MODULE  under REMOVAL & INSTALLATION.