Ford Transit 2002 Owner's Manual page 1477

C18: CHECK REFRIGERANT LOW-PRESSURE SWITCH
C19: CHECK ELECTRICAL CIRCUIT BETWEEN A/C LOW PRESSURE SWITCH AND
POWERTRAIN CONTROL MODULE (PCM) FOR OPEN CIRCUIT - VEHICLES WITH 1.8L
(55 KW) DIESEL ENGINE AND VEHICLES WITH LPG FUEL SYSTEM:
circuit 91S-FA17 (BK/RD)), wiring harness side and
ground.
Does the meter display battery voltage?
Yes
GO to C18.
No
GO to C26.
Ignition switch in position 0.
1
Measure the resistance at the A/C low pressure
2
switch, connector C692, between pin 1 and pin 4,
component side.
Is a resistance of less than 2 Ohm registered?
Yes
- vehicles with 1.8L (55 KW) diesel engine and
vehicles with LPG fuel
- vehicles with 1.8L (66 KW) diesel
C21.
- vehicles with 85 KW engine, except vehicles with
LPG fuel system:GO to
Vehicles built from
No
RENEW the refrigerant low-pressure switch. CHECK
the operation of the system.
Disconnect connector C415 from PCM.
1
Measure the resistance between PCM, connector
2
C415, pin 41, circuit 15S-RE8 (GN/YE), wiring
harness side and A/C low pressure switch,
connector C692, pin 1, circuit 15S-RE8 (GN/YE),
wiring harness side.
Is a resistance of less than 2 Ohm registered?
Yes
GO to C20.
No
LOCATE and REPAIR the break in circuit 15S-RE8
http://vnx.su
system:GO to C19.
engine:GO to
C23.
07/2006:GO to C37.