Ford Focus RS (2011 year). Instruction — part 99
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
3 Connect the test and deployment lead to the
Ford approved diagnostic tool.
4 Measure the resistance between each of the
terminals and the passenger side air curtain
module casing.
• Are the resistances greater than 10,000 ohms?
ൺ
Yes
E39389
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
ൺ
No
INSTALL a new passenger side air curtain
module. REFER to: (501-20 Supplemental
Restraint System)
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
1 Ignition switch in position 0.
2 Disconnect RCM C429.
3 Disconnect Passenger Side Air Curtain Module
Simulator.
4 Measure the resistance between the:
• RCM C429 pin 11, circuit 91S- JA51 (BK/BU),
harness side and ground.
• RCM C429 pin 12, circuit 15S-JA51 (GN/BU),
harness side and ground.
TIE0036515
• Are the resistances greater than 10,000 ohms?
ൺ
Yes
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
ൺ
No
REPAIR circuit 15S-JA51 (GN/BU) or circuit
91S-JA51 (BK/BU). REPEAT the self-test,
CLEAR the DTCs. REACTIVATE the system.
PINPOINT TEST BD : DTC B2780: PASSENGER SIDE AIR CURTAIN CIRCUIT SHORT TO BATTERY
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BD1: CHECK THE PASSENGER SIDE AIR CURTAIN WIRING HARNESS FOR A SHORT TO
BATTERY OR IGNITION
WARNING: To avoid accidental deployment, the RCM backup power supply must be depleted.
Wait at least one minute after disconnecting the battery ground cable(s) before commencing
G401865en
501-20B-
96
Supplemental Restraint System
501-20B-
96
DIAGNOSIS AND TESTING
Side Air Curtain Module - Vehicles Built From
:
22-06-2007
(Removal and Installation),
BC3: CHECK THE PASSENGER SIDE AIR CURTAIN WIRING HARNESS FOR A SHORT TO GROUND
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors.
Failure to follow these instructions may result in personal injury.
1 Deactivate the SRS.
2 Disconnect Passenger Side Air Curtain Module
Simulator.
3 Disconnect RCM C429.
4 Ignition switch in position II.
5 Measure the voltage between the:
• RCM C429 pin 11, circuit 91S- JA51 (BK/BU),
harness side and ground.
• RCM C429 pin 12, circuit 15S-JA51 (GN/BU),
harness side and ground.
TIE0036516
• Is any voltage present?
ൺ
Yes
REPAIR circuit 15S-JA51 (GN/BU) or circuit
91S-JA51 (BK/BU). REPEAT the self-test,
CLEAR the DTCs. REACTIVATE the system.
ൺ
No
CONNECT the passenger side air curtain
module simulator and the RCM C429.
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
PINPOINT TEST BE : DTC B2855: FRONT CRASH SENSOR CIRCUIT SHORT TO BATTERY OR
GROUND
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BE1: CHECK THE CRASH SENSOR FOR A SHORT TO BATTERY
WARNING: To avoid accidental deployment, the RCM backup power supply must be depleted.
Wait at least one minute after disconnecting the battery ground cable(s) before commencing
any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors.
Failure to follow these instructions may result in personal injury.
1 Deactivate the SRS.
2 Disconnect Crash Sensor C420.
3 Disconnect RCM C426.
4 Ignition switch in position II.
G401865en
501-20B-
97
Supplemental Restraint System
501-20B-
97
DIAGNOSIS AND TESTING
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
5 Measure the voltage between the:
• RCM C426 pin 13, circuit 9-JA49 (BN), harness
side and ground.
• RCM C426 pin 14, circuit 8-JA49 (WH), harness
side and ground.
TIE0020921
• Is any voltage present?
ൺ
Yes
REPAIR circuit 8-JA49 (WH) or circuit 9-JA49
(BN) and circuit 15-JA10 (GN/OG). REPEAT
the self-test, CLEAR the DTCs. REACTIVATE
the system.
ൺ
No
BE2: CHECK THE CRASH SENSOR FOR A SHORT TO GROUND
1 Ignition switch in position 0.
2 Measure the resistance between the:
• RCM C426 pin 13, circuit 9-JA49 (BN), harness
side and ground.
• RCM C426 pin 14, circuit 8-JA49 (WH), harness
side and ground.
TIE0020920
• Are the resistances greater than 10,000 ohms?
ൺ
Yes
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
ൺ
No
REPAIR circuit 8-JA49 (WH) or circuit 9-JA49
(BN). REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
PINPOINT TEST BF : DTC U0073: RESTRAINTS CONTROL MODULE COMMUNICATION BUS OFF
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BF1: CHECK THE RCM COMMUNICATION BUS CIRCUIT FOR A SHORT CIRCUIT
WARNING: To avoid accidental deployment, the RCM backup power supply must be depleted.
Wait at least one minute after disconnecting the battery ground cable(s) before commencing
any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors.
Failure to follow these instructions may result in personal injury.
1 Deactivate the SRS.
2 Disconnect RCM C426.
G401865en
501-20B-
98
Supplemental Restraint System
501-20B-
98
DIAGNOSIS AND TESTING
GO to BE2
.
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
3 Measure the resistance between the RCM C426
pin 19, circuit 4-EC10N (GY), harness side and
the RCM C426 pin 20, circuit 5-EC10N (BU),
harness side.
• Is the resistance greater than 10,000 ohms?
ൺ
Yes
TIE0037880
ൺ
No
REPAIR circuits 4-EC10N (GY) and 5-EC10N
(BU). REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
BF2: CHECK THE RCM COMMUNICATION BUS CIRCUIT FOR A SHORT TO GROUND
1 Measure the resistance between the RCM C426
pin 19, circuit 4-EC10N (GY), harness side and
ground.
• Is the resistance greater than 10,000 ohms?
ൺ
Yes
TIE0020987
ൺ
No
REPAIR circuit 4-EC10N (GY). REPEAT the
self-test, CLEAR the DTCs. REACTIVATE the
system.
BF3: CHECK THE RCM COMMUNICATION BUS CIRCUIT FOR A SHORT CIRCUIT TO BATTERY
OR IGNITION
1 Ignition switch in position II.
2 Measure the voltage between the RCM C426
pin 20, circuit 5-EC10N (BU), harness side and
ground.
• Is any voltage present?
ൺ
Yes
TIE0037881
REPAIR circuit 5-EC10N (BU). REPEAT the
self-test, CLEAR the DTCs. REACTIVATE the
system.
ൺ
No
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
G401865en
501-20B-
99
Supplemental Restraint System
501-20B-
99
DIAGNOSIS AND TESTING
GO to BF3
.
GO to BF2
.
PINPOINT TEST BG : DTC U1900: CAN COMMUNICATION BUS FAULT
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BG1: CHECK THE CAN BUS CIRCUIT
1 Select an alternative system to address.
• Is the Ford approved diagnostic tool able to
communicate with the instrument cluster?
ൺ
Yes
REPAIR circuit 4-EC10N (GY) or circuit 5-
EC10N (BU). REPEAT the self-test, CLEAR
the DTCs. REACTIVATE the system.
ൺ
No
CHECK the CAN bus.
CLEAR the DTCs. REACTIVATE the system.
PINPOINT TEST BH : DTC U2017: DRIVER SIDE IMPACT SENSOR COMMUNICATIONS FAULT
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BH1: CHECK THE DRIVER SIDE IMPACT SENSOR CIRCUIT
WARNING: To avoid accidental deployment, the RCM backup power supply must be depleted.
Wait at least one minute after disconnecting the battery ground cable(s) before commencing
any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors.
Failure to follow these instructions may result in personal injury.
1 Deactivate the SRS.
2 Disconnect Driver Side Impact Sensor C427.
3 Disconnect RCM C429.
4 Measure the resistance between the:
• RCM C429 pin 26, circuit 8-JA39 (WH), harness
side and the driver side impact sensor C427 pin
1, circuit 8-JA39 (WH), harness side.
• RCM C429 pin 27, circuit 9-JA39 (BN), harness
side and the driver side impact sensor C427 pin
2, circuit 9-JA39 (BN), harness side.
TIE0036518
• Are the resistances less than 5 ohms?
ൺ
Yes
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
ൺ
No
REPAIR circuit 8-JA39 (WH) or circuit 9-JA39
(BN). REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
G401865en
501-20B-
100
Supplemental Restraint System
501-20B-
100
DIAGNOSIS AND TESTING
PINPOINT TEST BI : DTC U2018: PASSENGER SIDE IMPACT SENSOR COMMUNICATIONS FAULT
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
BI1: CHECK THE PASSENGER SIDE IMPACT SENSOR CIRCUIT
WARNING: To avoid accidental deployment, the RCM backup power supply must be depleted.
Wait at least one minute after disconnecting the battery ground cable(s) before commencing
any repair or adjustment to the SRS, or any component(s) adjacent to the SRS sensors.
Failure to follow these instructions may result in personal injury.
1 Deactivate the SRS.
2 Disconnect Passenger Side Impact Sensor
C428.
3 Disconnect RCM C429.
4 Measure the resistance between the:
• RCM C429 pin 28, circuit 9-JA40 (BN/WH),
harness side and the passenger side impact
sensor C428 pin 2, circuit 9-JA40 (BN/WH),
harness side.
• RCM C429 pin 29, circuit 8-JA40 (WH/VT),
harness side and the passenger side impact
sensor C428 pin 1, circuit 8-JA40 (WH/VT),
harness side.
TIE0036519
• Are the resistances less than 5 ohms?
ൺ
Yes
REPEAT the self-test, CLEAR the DTCs.
REACTIVATE the system.
ൺ
No
REPAIR circuit 8-JA40 (WH/VT) or circuit 9-
JA40 (BN/WH). REPEAT the self-test, CLEAR
the DTCs. REACTIVATE the system.
G401865en
501-20B-
101
Supplemental Restraint System
501-20B-
101
DIAGNOSIS AND TESTING
Air Bag and Safety Belt Pretensioner Disposal
Special Tool(s)
Test and Deployment Lead,
Air Bag/Pyrotechnic Safety
Belt
418-S055 (40-007A)
40007A
General Equipment
12 volt battery
Wooden blocks
All vehicles
WARNINGS:
To minimize the possibility of injury in the
event of premature deployment, always
carry a live air bag module with the bag
and trim cover pointed away from the body.
Failure to follow this instruction may result
in personal injury.
To minimize the possibility of premature
deployment, live air bag modules must
only be placed on benches which have
been ground bonded and with the trim
cover facing up. Failure to follow these
instructions may result in personal injury.
Air bag modules and safety belt
pretensioners must be deployed in well
ventilated areas. Failure to follow this
instruction may result in personal injury.
Before deploying the air bag module or
safety belt buckle pretensioner, make sure
that all personnel in the vicinity are aware
that a loud noise (bang) is about to occur.
Do not let anybody approach closer than
six meters. Failure to follow this instruction
may result in personal injury.
The air bag module or the safety belt
pretensioner should not be handled
immediately following deployment as the
air bag module or safety belt pretensioner
will be hot. Failure to follow this instruction
may result in personal injury.
After deployment, the inflator(s) become
inert, direct contact with the skin or eyes
of any free pyrotechnic residues should
be avoided. Failure to follow this
instruction may result in personal injury.
Always wear gloves and safety glasses
when handling deployed air bag modules
and safety belt pretensioners. Failure to
follow this instruction may result in
personal injury.
If the air bag module or safety belt
pretensioner pyrotechnic residue should
contact the eyes immediately, wash the
eyes thoroughly with clean water and seek
medical assistance. Failure to follow this
instruction may result in personal injury.
If a large amount of air bag module or
safety belt pretensioner pyrotechnic
residue is inhaled, seek medical
assistance. Failure to follow this
instruction may result in personal injury.
1. Remove the air bag module(s) to be
deployed. For additional information, refer
to the relevant procedure(s) in this section.
2. Connect the special tools as shown.
1. 12 volt battery.
2. Adapter box (AC) (Part of Test and
Deployment lead, Air Bag/Pyrotechnic Safety
Belt).
3. Deployment lead (Part of Test and
Deployment lead, Air Bag/Pyrotechnic Safety
Belt).
G112921en
501-20B-
102
Supplemental Restraint System
501-20B-
102
GENERAL PROCEDURES
TIE0024547
3
1
2
Single stage air bag modules
3. Connect the test lead to the air bag module
and the adapter.
For additional information, refer to
G112921en
501-20B-
103
Supplemental Restraint System
501-20B-
103
GENERAL PROCEDURES
Specifications
in this section.
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