Ford 2003 Mustang Workshop Manual page 4067

Is the resistance greater than 10 ohms?
N5 CHECK FOR AN INTERMITTENT FAULT
Refer to the continuous DTCs recorded during Step N1.
Was the continuous DTC retrieved during Step N1 an
intermittent fault?
N6 CHECK FOR ADDITIONAL DTCs
Refer to the continuous DTCs recorded during Step N1.
Were any continuous DTCs retrieved during Step N1?
Pinpoint Test O: DTC B1870 — Air Bag Indicator Shorted to Battery
Normal Operation
The air bag indicator is designed to illuminate for 6 (+/-2) seconds when the ignition switch is turned to
the RUN position. This initial 6 seconds of illumination is considered normal operation and is called
proveout of the air bag indicator. The air bag indicator is then used to warn the driver that there is a
fault in the air bag supplemental restraint system (SRS).
While the air bag indicator is lit, the restraints control module (RCM) monitors the air bag indicator for
short to battery conditions. If the RCM detects a short to battery condition on the air bag indicator
Yes
CHECK for causes
of intermittent
short to ground or
open on circuit 608
(BK/YE). Attempt
to recreate the
hard fault by
flexing the wire
harness and
cycling the ignition
key frequently.
REPAIR any
intermittent
concerns found.
GO to N6 .
No
GO to N6 .
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.
REACTIVATE the
system. PROVE
OUT the system.
REFER to Air Bag
Supplemental
Restraint System
(SRS) in this
section. CLEAR all
DTCs.