Ford 2003 Mustang Workshop Manual page 4044

Is the resistance less than 10,000 ohms?
F4 CHECK THE PASSENGER AIR BAG MODULE WIRING
Disconnect: Passenger Air Bag Module C256.
Inspect all crimps, terminals, wires and connectors in circuit 607
(LB/OG) feeding the RCM pin 6, circuit 616 (PK/BK) feeding pin 7.
Check for pinched wires and damaged connector pin terminals.
Was any damage found?
F5 CHECK FOR AN INTERMITTENT FAULT
Refer to the continuous DTCs recorded during Step F1.
Was the continuous DTC retrieved during Step F1 an
intermittent fault?
F6 CHECK FOR ADDITIONAL DTCs
Refer to the continuous DTCs recorded during Step F1.
Were any continuous DTCs retrieved during Step F1?
Yes
REPAIR as
necessary. GO to
F6 .
No
GO to F6 .
Yes
CHECK for causes
of intermittent short
to ground on circuit
607 (LB/OG) and
circuit 616
(PK/BK). Attempt
to recreate the
hard fault by
flexing the wire
harness and
cycling the ignition
key frequently.
REPAIR any
intermittent
concerns found.
GO to F6 .
No
GO to F6 .
Yes
Do not clear any
DTCs until all
DTCs have been
resolved. GO to
the Restraints
Control Module
(RCM) Diagnostic
Trouble Code
(DTC) Priority
Table in this
section for pinpoint
test direction.
No
RECONNECT the
system.