JAGUAR XK8 1999 1.G SRS Manual

Electromechanical Airbag SRS: XK8 1997 –2000 MY1
DTC Summaries
Electromechanical Airbag SRS: XK8 1997 – 2000 MY
DTCs are stored in the diagnostic module nonvolatile memory and can be accessed only through the DLC
(diagnostic link connector) using PDU.
CAUTION: Measuring the resistance of airbag circuits may cause airbag deployment. Refer to
the service literature for safe testing procedures. Observe all safety precautions when diagnosing
or repairing airbag SRS systems.

DTC FAULT DESCRIPTION MONITORING CONDITIONS MIL POSSIBLE CAUSESACTIVATED
Electromechanical Airbag SRS: XK8 1997 –2000 MY2
B1342 Internal diagnostic module fault Switch ignition ON for more than 10 seconds YES Diagnostic module failure
B1867 B+ voltage supply low (< 5 V) Switch ignition ON for more than 10 seconds YES B+ voltage to diagnostic module circuit: open circuit,
(Repair causes of any other logged DTCshigh resistance or short circuit to ground
before repairing B1867)
B1869 Diagnostic module “beeps” 5 times Switch ignition ON—AIRBAG SRS MIL failure plus additional airbag SRS
every 30 minutessystem faults; Refer to “No AIRBAG SRS MIL”
(Repair causes of any other logged DTCsnear the end of this summary
before repairing B1869)
B1913 Airbag circuit short circuit Switch ignition ON for more than 3 minutes. YES Passenger or driver airbag to diagnostic module:
(DTC 1913 will cause airbag SRS systemshort circuit to ground
10 A battery fuse to open circuit, flaggingPassenger or driver airbag: internal short circuit
DTC B1867. Repair cause of DTC B1913 first.)to ground
Driver airbag cassette: short circuit to ground
Diagnostic module to impact sensor voltage supply
circuit: high resistance or short circuit to ground
Impact sensor to airbag circuits:
short circuit to ground
Impact sensor to ground: high resistance
B1914 Impact sensor circuit short circuit to ground Switch ignition ON for more than 3 minutes. YES Diagnostic module to impact sensor voltage supply
(DTC B1914 will cause airbag SRS systemcircuit: open circuit, high resistance or short circuit
10 A battery fuse to open circuit, flaggingto ground
DTC B1867. Repair cause of DTC B1914 first.) Impact sensor failure
B1921 Diagnostic module poor ground (> 3.0 Ω) Switch ignition ON for more than 10 seconds. YES Diagnostic module to vehicle ground: high resistance
Diagnostic module failure
B1922 Safing sensor voltage high (> 5 V) Switch ignition ON for more than 10 seconds. YES Charging system voltage above 17 V
Diagnostic module to airbag harness: short circuit
to B+ voltage
Cable reel cassette: short circuit to B+ voltage
Diagnostic module failure
B1923 Diagnostic module fault (memory clear circuit) Switch ignition ON for 30 seconds YES Diagnostic module failure

DTC FAULT DESCRIPTION MONITORING CONDITIONS MIL POSSIBLE CAUSESACTIVATED
Electromechanical Airbag SRS: XK8 1997 –2000 MY3
B1924 Diagnostic module “fuse blow” circuit fault Switch ignition ON for more than 3 minutes. YES Diagnostic module B+ voltage supply circuit:
open circuit or high resistance
Diagnostic module to impact sensor circuits:
open circuit or high resistance
Impact sensor ground circuit: high resistance
Impact sensor failure
Diagnostic module failure
B1932 Driver airbag circuit high resistance Switch ignition ON for more than 30 seconds. YES Diagnostic module to driver side cable reel cassette
(above 3.5 Ω)harness: open circuit or high resistance
Cable reel cassette: open circuit or high resistance
Driver side airbag: open circuit or high resistance
Diagnostic module failure
B1933 Passenger airbag circuit high resistance Switch ignition ON for more than 30 seconds YES Diagnostic module to passenger side airbag harness:
(above 2.5 Ω)open circuit or high resistance
Passenger side airbag: open circuit or high resistance
Diagnostic module failure
B1934 Driver airbag circuit low resistance Switch ignition ON for more than 30 seconds. YES Diagnostic module to driver side cable reel cassette
(below 1 Ω)harness: short circuit
Driver side cable reel cassette: short circuit
Driver side airbag: short circuit
Diagnostic module failure
B1935 Passenger airbag circuit low resistance Switch ignition ON for more than 30 seconds. YES Diagnostic module to passenger side airbag harness:
(below 0.7 Ω)short circuit
Passenger side airbag: short circuit
Diagnostic module failure
B1941 Right side impact sensor supply circuit Switch ignition ON for more than 30 seconds. YES Diagnostic module to impact sensor harness circuits:
high resistanceopen circuit, high resistance or short circuit
to B+ voltage
Impact sensor failure
Diagnostic module failure

DTC FAULT DESCRIPTION MONITORING CONDITIONS MIL POSSIBLE CAUSESACTIVATED
Electromechanical Airbag SRS: XK8 1997 –2000 MY4
B1942 Left side impact sensor supply circuit Switch ignition ON for more than 30 seconds. YES Diagnostic module to impact sensor harness circuits:
high resistanceopen circuit, high resistance or short circuit
to B+ voltage
Left impact sensor failure
Diagnostic module failure
B1944 Right impact sensor poor ground Switch ignition ON for more than 30 seconds. YES Sensor to body grounds: loose or corroded
Sensor to diagnostic module harness sensor ground
circuit: high resistance or open circuit
Sensor failure
Diagnostic module failure
B1945 Left impact sensor poor ground Switch ignition ON for more than 30 seconds. YES Sensor to body grounds: loose or corroded
Sensor to diagnostic module harness sensor ground
circuit: high resistance or open circuit
Sensor failure
Diagnostic module failure
No DTC No AIRBAG SRS MIL Switch ignition ON.—AIRBAG SRS MIL bulb failure
Ignition auxiliary switched circuit to diagnostic
module: no voltage or open circuit
Instrument pack to diagnostic module AIRBAG SRS
MIL circuit: open circuit
Diagnostic module failure
Instrument pack failure
No DTC AIRBAG SRS MIL stays ON constantly Switch ignition ON for more than 10 seconds. YES Instrument pack to diagnostic module AIRBAG SRS
with ignition ONMIL circuit: open circuit or high resistance
Ignition switched voltage to diagnostic module:
open circuit, high resistance or short circuit
to ground
Diagnostic module failure
No DTC AIRBAG SRS MIL flashes continuously Switch ignition ON for more than 10 seconds.
CONTINUOUSBoth impact sensors disconnected
(DTCs B1941, B1942, B1944 and B1945 logged) FLASHING Main wiring harness disconnected