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System Tests: Notes

CAUTION: Electronic modules are sensitive to static electrical charges. Proper grounding of technician and component is essential to prevent damage.
NOTE: Perform all voltage and resistance tests using an Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
SYMPTOM INDEX

Condition Perform Test
Instrument Cluster Is Inoperative A 
Incorrect Fuel Gauge Indication (Without Flex Fuel) B 
Incorrect Fuel Gauge Indication (With Flex Fuel) C 
Incorrect Temperature Gauge Indication D 
Low Oil Pressure Warning Indicator Is Inoperative E 
Charging System Warning Indicator Is Always On (1)
Speedometer/Odometer Is Inoperative F 
Tachometer Is Inoperative G 
Low Fuel Indicator Is Always On H 
Charging System Warning Indicator Is Never On I 
Brake Warning Indicator Is Always On (2)
Brake Warning Indicator Is Never On J 
Brake Warning Indicator Is Never On (With Parking Brake Engaged) K 
Check Engine Indicator Is Always On (3)
Check Engine Indicator Is Inoperative L 
Safety Belt Warning Indicator Does Not Operate Correctly M 
Door Ajar Indicator Does Not Operate Correctly N 
LH Turn Indicator Is Inoperative O 
RH Turn Indicator Is Inoperative P 
High Beam indicator Is Inoperative Q 
Air Bag Indicator Is Inoperative/Always On (4)
Traction Control Indicator Is Inoperative R 
Check Transmission Indicator Is Inoperative S 
ABS Indicator Is Always On (5)
ABS Indicator Is Inoperative T 
Low Coolant Indicator Is Inoperative U 
Cruise Control Indicator Is Inoperative V 
Check Fuel Cap Indicator Is Inoperative/Always On W 
No Communication With Generic Electronic Module (GEM) X 
(1) See CHARGE WARNING INDICATOR ON WITH ENGINE RUNNING under SYSTEM TESTS in appropriate GENERATORS & REGULATORS - SABLE & TAURUS article in STARTING & CHARGING SYSTEMS.
(2) See appropriate DISC & DRUM article in BRAKES.
(3) For testing procedure, see appropriate SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article in ENGINE PERFORMANCE.
(4) For information on air bag DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see appropriate AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.
(5) See appropriate ANTI-LOCK article in BRAKES.
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