Ford 2003 Mustang Workshop Manual page 4042

E6 CHECK FOR ADDITIONAL DTCs
Refer to continuous DTCs recorded during Step E1.
Were any continuous DTCs retrieved during Step E1?
Pinpoint Test F: LFC 16/DTC B1888 — Passenger Air Bag Circuit Shorted to Ground
Normal Operation
The restraints control module (RCM) checks for passenger air bag circuit shorts to ground by
monitoring the voltage of circuits 607 (LB/OG) and 616 (PK/BK) at pins 6 and 7. If the RCM detects a
short to ground on either of these pins, it will store a diagnostic trouble code (DTC) B1888 in memory
and flash a lamp fault code (LFC) 16 (or higher priority code if one exists) on the air bag indicator.
Possible Causes
A passenger air bag circuit short to ground can be caused by:
a short to ground on circuit 607 (LB/OG).
a short to ground on circuit 616 (PK/BK).
a short to ground on the passenger air bag module.
an RCM internal concern.
PINPOINT TEST F: LFC 16/DTC B1888 — PASSENGER AIR BAG
CIRCUIT SHORTED TO GROUND
Test Step
to E6 .
No
GO to E6 .
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.
Result / Action to
Take