Ford Transit 2002 Owner's Manual page 1471

A13: CHECK THE CIRCUIT BETWEEN THE BLOWER RESISTOR AND THE BLOWER
SWITCH
PINPOINT TEST B : BLOWER MOTOR RUNNING CONTINUOUSLY
TEST
CONDITIONS
B1: CHECK THE HEATER BLOWER SWITCH
Ignition switch in position 0.
1
Disconnect connector C469 of heater blower switch.
2
Ignition switch in position II.
3
Check function of blower motor.
4
Does the blower motor run continuously?
Yes
GO to
No
INSTALL A NEW blower switch. CHECK the operation of the system.
B2: CHECK THE CIRCUITS AT THE BLOWER RESISTOR
Ignition switch in position 0.
1
Disconnect connector C470 from blower resistor assembly.
2
Ignition switch in position II.
3
Is a resistance of less than 2 Ohm registered?
Yes
GO to
No
LOCATE and REPAIR the break in circuit 31S-FA31
(BK/YE) between the blower resistor assembly and
the blower switch using the Wiring Diagrams.
CHECK the operation of the system.
Measure the resistance between the blower resistor
1
assembly, connector C470, pin 3, circuit 31S-FA30
(BK/WH), wiring harness side and the blower
switch, connector C469, pin 1, circuit 31S-FA30
(BK/WH), wiring harness side.
Is a resistance of less than 2 Ohm registered?
Yes
RENEW the blower resistor assembly. CHECK the
operation of the system.
No
LOCATE and REPAIR the break in circuit 31S-FA30
(BK/WH) between the blower resistor assembly and
the blower switch using the Wiring Diagrams.
CHECK the operation of the system.
DETAILS/RESULTS/ACTIONS
B2.
http://vnx.su
A13.