Ford Transit 2002 Owner's Manual page 1479

C23: CHECK ELECTRICAL CIRCUIT BETWEEN A/C LOW PRESSURE SWITCH AND
POWERTRAIN CONTROL MODULE (PCM) FOR OPEN CIRCUIT - VEHICLES WITH 85 KW
ENGINE EXCEPT VEHICLES WITH LPG FUEL SYSTEM:
C24: CHECK ELECTRICAL CIRCUIT BETWEEN A/C CLUTCH RELAY AND PCM FOR OPEN
CIRCUIT - VEHICLES WITH 85 KW ENGINE EXCEPT VEHICLES WITH LPG FUEL
SYSTEM:
C25: CHECK AIR CONDITIONING CLUTCH RELAY
Is a resistance of less than 2 Ohm registered?
Yes
GO to C25.
No
LOCATE and RECTIFY the break in circuit 31S-FA11
(BK/YE) between PCM and the air conditioning
clutch relay using the Wiring Diagrams. CHECK the
operation of the system.
Disconnect connector C416 of PCM.
1
Measure the resistance between PCM, connector
2
C416, pin 10, 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 C24.
No
LOCATE and REPAIR the break in circuit 15S-RE8
(GN/YE) between the A/C low pressure switch and
the PCM using the Wiring Diagrams. CHECK the
operation of the system.
Measure the resistance between the PCM,
1
connector C416, pin 54, circuit 31S-FA11 (BK/YE),
wiring harness side and the A/C clutch relay, socket
C1011, pin 2, circuit 31S-FA11 (BK/YE), wiring
harness side.
Is a resistance of less than 2 Ohm registered?
Yes
GO to C25.
No
LOCATE and RECTIFY the break in circuit 31S-FA11
(BK/YE) between PCM and the air conditioning
clutch relay using the Wiring Diagrams. CHECK the
operation of the system.
Check the A/C clutch relay according to the
1
component check at the end of the section.
Is the air conditioning clutch relay OK?
Yes
TEST the PCM and RENEW as necessary. CHECK the
operation of the system.
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