Ford 2002 Bantam, Workshop Manual

Page: 1092 / 1663

412-00-3
A
Climate Control System — General Information 412-00-3
A
DIAGNOSIS AND TESTING
Climate Control System
Refer to Wiring Diagrams Petrol and Diesel
Cell:41200,for schematic and connector information.
Inspection and Testing
1. Verify the customer concern.
2. Visually inspect for obvious signs of
mechanical or electrical damage.
Visual Inspection Chart
Mechanical Electrical
• Vacuum hoses.
• Refrigerant (filling or
leaks).
• Drive belt.
• Coolant level.
• Fuse(s).
• Circuit(s).
• Connector damaged
or loose.
3. If an obvious cause for an observed or
reported concern is found, correct the cause
(if possible) before proceeding to the next
step.
4. If the cause is not visually evident, verify the
symptom and refer to the Symptom Chart.
Symptom Chart
Condition Possible Sources Action
• No / insufficient heating power.
• Fuse(s).
• Circuit(s).
• Heater control module.
• Heater control solenoid valve.
• Go To Pinpoint Test A
• The A/C system is inoperative
(the heater blower is OK).
• Fuse(s).
• Circuit(s).
• A/C compressor clutch.
• A/C Wide Open Throttle (W.O.T)
relay.
• A/C switch relay.
• Air conditioning high-pressure
switch.
• Air conditioning low pressure
switch.
• Heater and A/C control
assembly.
• PCM.
• Go To Pinpoint Test B
• The heater blower system is
inoperative.
• Fuse(s).
• Circuit(s).
• Heater blower motor.
• Heater blower switch.
• Heater blower series resistor.
• Go To Pinpoint Test C
• The air re-circulation flap is in-
operative.
• Fuse(s).
• Circuit(s).
• Re-circulation air actuator.
• A/C re-circulation flap relay.
• Re-circulation switch.
• Go To Pinpoint Test D
• Engine cooling fan motor is in-
operative.
• Fuse(s).
• Circuit(s).
• Engine cooling fan motor.
• Powertrain control module
(PCM).
• REFER to Section 303-03.
E9425 EN 07/2001 2002 Bantam