Ford Transit 2002 Owner's Manual page 1491

D11: CHECK THE CIRCUIT BETWEEN THE DEHUMIDIFICATION SWITCH AND THE
CONTROL PANEL FOR THE CLIMATE CONTROL SYSTEM FOR SHORT TO GROUND
PINPOINT TEST E : REFRIGERANT COMPRESSOR INOPERATIVE WHEN
SWITCH SET TO 'DEFROST/DEMIST WINDSHIELD' (OTHER FUNCTIONS OF
THE CONTROL PANEL FOR THE CLIMATE CONTROL SYSTEM OK)
NOTE: If the temperature outside is less than 4° C the refrigerant compressor will not
switch on.
TEST CONDITIONS
E1: CHECK THE CIRCUIT OF THE DEHUMIDIFICATION SWITCH FOR OPEN CIRCUIT
and ground.
Is a resistance of less than 2 Ohm registered?
Yes
GO to D11.
No
CHECK and if necessary RENEW the control panel
for the climate control system. CHECK the
operation of the system.
Disconnect Connector C376 from the control panel
1
for the climate control system.
Measure the resistance between the control panel
2
for the climate control system, connector C380, pin
7, circuit 91S-FA20 (BK/YE), wiring harness side
and ground.
Is a resistance of more than 10,000 Ohm measured?
Yes
RENEW the dehumidification switch. CHECK the
operation of the system.
No
LOCATE and REPAIR the short to ground in circuit
91S-FA20 (BK/YE) between the dehumidification
switch and the control panel for the climate control
system using the Wiring Diagrams. CHECK the
operation of the system.
DETAILS/RESULTS/ACTIONS
Ignition switch in position 0.
1
Disconnect Connector C380 from the control panel
2
for the climate control system.
Set the air distribution to "Defrost/demist
3
windscreen".
Measure the resistance between the control panel
4
for the climate control system, connector C380, pin
7, circuit 91S-FA20 (BK/YE), wiring harness side
and ground.
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