2010 JAGUAR XFR B1A54

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Occupant Classification System (OCS)
Description and Operation

Occupant Classification System (OCS)


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle
NOTES:


It is advisable not to use a cellular phone or to have a cellular phone in close proximity when working on the restraints
control module or associated systems


Given the legal implications of a restraints system failure, harness repairs to Air Bag module circuits are not acceptable.
Where the text refers to "REPAIR the circuit", this will normally mean the replacement of a harness.


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component.


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent
concern may be the cause. Always check for loose connections and corroded terminals


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as required.

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the occupant classification system, for
additional diagnosis and testing information refer to the relevant diagnosis and testing section.
For additional information, refer to: Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) (501-20
Supplemental Restraint System, Diagnosis and Testing).

DTC Description Possible Causes Action B1193-53
Crash Event
Storage Full and
Locked -
Deactivated
Crash event occurred
Clear diagnostic trouble code and re-test B1A54-01
Occupant Belt Tension Sensor -
General Electrical
Failure
General electrical failure
Clear diagnostic trouble code and re-test. If the problem
persists, check and install a new safety belt tension
sensor as required. Refer to the warranty policy and
procedures manual, or determine if any prior approval
programme is in operation, prior to the installation of a
new module/component B1A54-02
Occupant Belt Tension Sensor -
General signal
failure
General signal failure
Refer to the electrical circuit diagrams and check safety
belt tension and mat pressure sensor circuits for short to
each other

DTC Description Possible Causes Action B1A54-11
Occupant Belt Tension Sensor -
Circuit short to
ground
Safety belt tension
sensor voltage reference
or signal circuit - short
to ground
Refer to the electrical circuit diagrams and check safety
belt tension sensor voltage reference and signal circuits
for short to ground B1A54-12
Occupant Belt Tension Sensor -
Circuit short to
battery
Safety belt tension
sensor voltage reference
or signal circuit - short
to power
Refer to the electrical circuit diagrams and check safety
belt tension sensor voltage reference and signal circuits
for short to power B1A54-13
Occupant Belt Tension Sensor -
Circuit open
Safety belt tension
sensor voltage reference
or signal circuit - open
circuit
Refer to the electrical circuit diagrams and check safety
belt tension sensor voltage reference and signal circuits
for open circuit B1A62-02
Pressure Sensor -
General signal
failure
General signal failure
Refer to the electrical circuit diagrams and check safety
belt tension and mat pressure sensor circuits for short to
each other B1A62-11
Pressure Sensor -
Circuit short to
ground
Mat pressure sensor
voltage reference or
signal circuits - short to
ground
Refer to the electrical circuit diagrams and check mat
pressure sensor voltage reference and signal circuits for
short to ground B1A62-12
Pressure Sensor -
Circuit short to
battery
Mat pressure sensor
voltage reference,
ground or signal circuits
- short to power
Refer to the electrical circuit diagrams and check mat
pressure sensor voltage reference, ground and signal
circuits for short to power B1A62-13
Pressure Sensor -
Circuit open
Mat pressure sensor
voltage reference or
signal circuit - open
circuit
Refer to the electrical circuit diagrams and check mat
pressure sensor voltage reference and signal circuits for
open circuit B1A62-7B
Pressure Sensor -
Low fluid level
Low fluid level - bladder
damaged
Check and install new bladder as required. Refer to the
warranty policy and procedures manual, or determine if
any prior approval programme is in operation, prior to the
installation of a new module/component U0001-88
High Speed CAN
Communication
Bus - Bus off
Bus off
Refer to the electrical circuit diagrams and check CAN
network for short, open circuit. Carry out the CAN
network integrity test using the manufacturer approved
diagnostic system U0151-00
Lost
Communication
With Restraints
Control Module -
No sub type
information
Restraints control
module missing
message
Refer to the electrical circuit diagrams and check power
and ground supplies to restraints control module. Carry
out CAN network integrity test using the manufacturer
approved diagnostic system U0300-00
Internal Control
Module Software
Incompatibility -
No sub type
information
Master car configuration
file ID does not
correspond
Check correct occupancy seat module is installed for
vehicle specification. Check rear junction box for related
diagnostic trouble codes and refer to relevant diagnostic
trouble code index U2016-51
Control Module
Main Software -
Not programmed
Main software not
programmed
Check and install a new occupancy seat module as
required. Refer to the warranty policy and procedures
manual, or determine if any prior approval programme is
in operation, prior to the installation of a new
module/component U201A-51
Control Module
Main Calibration
Data - Not
programmed
Main calibration data not
programmed
Check and install a new occupancy seat module as
required. Refer to the warranty policy and procedures
manual, or determine if any prior approval programme is
in operation, prior to the installation of a new
module/component