Ford Transit 2002 Owner's Manual page 1079

B2: CHECK CIRCUIT 50-BB16 (GY/BK) FOR OPEN
B3: CHECK CIRCUIT 31S-BB16 (BK/RD) FOR OPEN
B4: CHECK CIRCUIT 31S-BB16 (BK/RD) FOR OPEN
Ignition switch in position III.
2
Measure the voltage between the starter motor relay
3
R13 pin 1, circuit 50-BB16 (GY/BK), harness side
and ground.
Is the voltage greater than 10 volts?
Yes
GO to B3.
No
GO to B2.
Ignition switch in position 0.
1
Disconnect Ignition switch C456.
2
Measure the resistance between the ignition switch
3
C456 pin 7, circuit 50-BB16 (GY/BK), harness side
and the starter relay R13 pin 1, circuit 50-BB16
(GY/BK), harness side.
Is the resistance less than 1 ohm?
Yes
INSTALL a new ignition switch.
REFER to: Ignition Switch
Switches, Removal and Installation).
TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal
operation.
Ignition switch in position II.
1
Measure the resistance between the starter relay
2
R13 pin 2, circuit 31S-BB16 (BK/RD), harness side
and ground.
Is the resistance between 20 and 25 ohms?
Yes
INSTALL a new starter relay. TEST the system for
normal operation.
No
GO to B4.
Ignition switch in position 0.
1
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(211-05 Steering Column