Ford Thunderbird Manual page 216

03-03-6
DESCRIPTION AND OPERATION (Continued)
Block Heater
The block heater (6A05 1) is designed to keep the
engine coolant warm during cold weather to aid in cold
starting and consists of:
•
electrical heating element installed in one of the core
plug openings in the cylinder blocks (60 1 0).
•
electrical cable which plugs into a standard 1 1 0-volt
ac electrical outlet.
DIAGNOSIS AND TESTING
Electrical Schematic
Refer to Electrical and Vacuum Troubleshooting
Manual, Cell 33, Cooling Fan for schematic and
connector information.
Engine Cooling
Inspection and Verification
1 . Verify the customer's concern by operating the
engine cooling system to duplicate the concern.
2. Inspect to determine if one of the following
mechanical or electrical concerns apply:
VISUAL INSPECTION CHART
Mechanical
• Damaged hoses.
• Loose / damaged hose
clamps.
• Damaged water thermostat.
• Damaged head gasket.
• Damaged intake manifold
gasket.
• Damaged water pump.
• Damaged radiator.
• Damaged radiator coolant
recovery reservoir or degas
bottle.
• Damaged heater core.
Engine Cooling
Electrical
• Circuitry open I shorted.
• Damaged constant control
relay module.
• Damaged cooling fan motor.
• Damaged pusher cooling
fan motor.
• Damaged powertrain
control module (PCM).
•
If coolant condition is satisfactory, check
coolant concentration for proper protection
level as described under Coolant Condition
Check.
•
If concentration level is low, partially drain the
cooling system by opening the radiator
draincock (8 1 1 5) or partially removing the
lower radiator hose (8286). Secure the
radiator draincock or hose clamp and add 1 00
percent concentration of Premium Cooling
System Fluid E2FZ - 1 9549-AA or
Oregon, F5FZ- 1 9549-CC; in Canada,
CXC-8-B), recycled coolant or equivalent
meeting Ford specification ESE-M97844-A to
obtain the recommended protection level. Wet
the rubber sealing surface of the pressure
relief cap before installing the pressure relief
cap.
3. If inspection reveals obvious concern(s) which
can be readily identified, service as required.
If the concerns remain after the inspection,
4.
determine the symptoms and go to the Symptom
Chart:
Symptom Chart
Refer to the Electrical and Vacuum Troubleshooting
Manual for connector numbers cited in the pinpoint
tests.
Use Rotunda 73 Digital Multimeter 1 05-R005 1 or
equivalent to perform pinpoint tests.
03-03-6
(in
-8
1997 Thunderbird, Cougar July 1996