Ford Transit 2002 Owner's Manual page 1036

Ignition switch in position 0.
1
Disconnect AFCM C406.
2
Disconnect CKP sensor C643.
3
Measure the resistance between the following
4
electrical connectors.
AFCM C406 pin 21, circuit 8-RJ4B (WH/RD),
harness side and CKP sensor C643 pin 1, circuit 8-
RJ4 (WH/RD), harness side.
AFCM C406 pin 5, circuit 9-RJ4B (BN/RD), harness
side and CKP sensor C643 pin 2, circuit 9-RJ4
(BN/RD), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new AFCM.
REFER to: Gas Control Module
Charging and Controls - 1.8L Duratec-DOHC
(85kW/115PS) - Zetec, Liquefied Petroleum Gas
(LPG), Removal and Installation).
TEST the system for normal operation.
No
REPAIR the circuit(s), TEST the system for normal
operation.
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