Ford F-150 2001 Climate Control System Workshop Manual page 23

2001 F-150 Workshop Manual
E8 CHECK THE BLOWER MOTOR GROUND
E9 CHECK CIRCUIT 261 (O/BK)
A/C Blower Motor Resistor C191
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Measure the voltage between A/C blower motor C190-2, Circuit 399 (BR/Y), and ground while selecting each
mode on the function selector switch.
Is the voltage greater than 10 volts in all function selector switch positions except OFF?
Yes
GO to E8.
No
GO to E10.
Turn the blower motor switch to the HI position.
Measure the resistance between the A/C blower motor C190-1, Circuit 261 (O/BK) and ground.
Is the resistance less than 10 ohms?
Yes
INSTALL a new A/C blower motor. TEST the system for normal operation.
No
GO to E9.
Measure the resistance between the A/C blower motor C190-1, Circuit 261 (O/BK), and the A/C blower motor
resistor C191-2, Circuit 261 (O/BK).
Is the resistance less than 5 ohms?
Yes
REPAIR Circuit 57 (BK) for an open between the function selector switch C218-1 and ground. TEST the system for
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