Ford Transit 2002 Owner's Manual page 1484

C36: CHECK THE CIRCUIT BETWEEN THE CONTROL PANEL FOR THE CLIMATE
CONTROL SYSTEM AND THE REFRIGERANT HIGH-PRESSURE SWITCH FOR OPEN
CIRCUIT
C37: CHECK THE A/C REQUEST SIGNAL IN THE POWERTRAIN CONTROL MODULE
(PCM)
C38: CHECK THE CIRCUIT BETWEEN THE PCM AND THE REFRIGERANT LOW
PRESSURE SWITCH FOR OPEN CIRCUIT
necessary RENEW the control panel for the climate
control system. CHECK the operation of the system.
No
LOCATE and RECTIFY the break in circuit 31S-FA26
(BK/RD) between the control panel for the climate
control system and the blower switch with the aid
of the Wiring Diagrams. CHECK the operation of the
system.
Measure the resistance between the control panel
1
for the climate control system, connector C380, pin
9, circuit 15S-FA38 (GN/RD), wiring harness side
and the refrigerant high pressure switch, connector
C882, pin 1, circuit 15S-FA38 (GN/RD), wiring
harness side.
Is a resistance of less than 2 Ohm registered?
Yes
CHECK and if necessary RENEW the control panel
for the climate control system. CHECK the operation
of the system.
No
LOCATE and REPAIR the break in circuit 15S-FA38
(GN/RD) between the control panel for the climate
control system and the refrigerant high pressure
switch with the aid of the Wiring Diagrams. CHECK
the operation of the system.
Connect the diagnostic tool.
1
Switch on the blower.
2
Switch on the air-conditioning system.
3
Using the diagnostic unit, select the PCM and check
4
in the data logger whether an A/C request signal is
displayed.
Is an A/C request signal displayed in the data logger of
the PCM?
Yes
GO to C38.
No
GO to C40.
Ignition switch in position 0.
1
Disconnect connector C419 from the PCM.
2
Measure the resistance between the refrigerant
3
low-pressure switch, connector C692, pin 1, circuit
91S- RE8 (BK/YE), wiring harness side and the PCM,
connector C419, pin E4, circuit 91S-RE8 (BK/YE),
wiring harness side.
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