1994 JAGUAR XJ6 sensor

Electrical
Electrical schematic - Fault Code 34
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J86-1674
1. Instrument Panel Fuse 6. Passenger-side Air Bag
2. Engine Compartment Fuse
7. RH Impact Sensor 3. Safing Sensor 8. LH Impact Sensor
4. Cable Reel Cassettes 9.
Air Bag MIL Lamp 5. Driver-side Air Bag 10. Diagnostic Module
Fig.
1
X300 EDM 15.1 - 29 Issue 1 August 1994

Electrical n
Electrical schematic - Fault Code 35
0
J86-1675
1. Instrument Panel Fuse 6. Passenger-side Air Bag
2. Engine Compartment Fuse 7. RH Impact Sensor 3. Safing Sensor 8. LH Impact Sensor 4. Cable Reel Cassettes 9. Air Bag MIL Lamp 5. Driver-side Air Bag 10. Diagnostic Module
Fig.
1

rl E I ect r ica I
FAULT CODE 41
Front Right Impact Sensor Feed / Return Open Circuit
Normal Operation
The DM monitors and compares the voltages on pins 2 and 17. the voltage on both pins should be identical. If a discrep- ancy between the two measurements is detected the MIL Lamp will illuminate and fault code 41 will be present, indicat- ing open circuit between DM and RH impact sensor.
Possible Causes
0 Harness open circuit between DM pins 2 and 17 and sensor.
0 Internal open circuit in RH impact sensor wiring.
Fault Diagnosis
1. Circuit - check
. Disarm the SRS system.
. Disconnect DM.
. Measure resistance across harness connections to RH impact sensor, wires KU and ON.
. Is the resistance less than 251 ?
Yes - Renew RH impact sensor.
No - Proceed to step 2.
2.
Resistance -check
Disconnect RH impact sensor from main harness.
. Measure resistance across sensor terminals 1 and 2.
. Is resistance reading less than 251.
Yes - Examine harness wiring and connectors for open circuit.
No - Renew RH impact sensor.
4. On completion.
. Arm and verify the SRS system.
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X300 EDM 15.1 - 32 Issue 1 August 1994

Electricalschematic - Fault Code 41
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J86-1699
1.
Instrument Panel Fuse 6. Passenger-side Air Bag 2. Engine Compartment Fuse 7. RH Impact Sensor
3. Safing Sensor 8. LH Impact Sensor
4. Cable Reel Cassettes 9. Air Bag MIL Lamp
5. Driver
-side Air Bag 10. Diagnostic
Module
Fig. 1
Issue 1 August 1994 X300 EDM 15.1 - 33

E I ect r ical rl
FAULT CODE 42
Front L eft Impact Sensor Feed / Return Open Circuit
Normal Operation
The DM monitors and compares the voltages on pins 6 and 18. The voltage on both pins should be identical. If a dis- crepancy between the two measurements is detected the MIL Lamp will illuminate and fault code 42 will be present,
indicating open circuit between DM and LH impact sensor.
Possible Causes
0 Harness open circuit between DM pins 6 and 18 and the sensor.
0 Internal open circuit in LH impact sensor wiring.
Fault Diagnosis
1. Circuit - check
. Disarm the SRS system.
Disconnect DM.
. Measure resistance across harness connections to LH impact sensor, wires KG and YU.
. Is the resistance less than 28 ?
Yes - Renew LH impact sensor.
No - Proceed to step 2.
2. Resistance -check
. Disconnect LH impact sensor from main harness.
. Measure resistance across sensor terminals 1 and 2.
. Is resistance reading less than 28.
Yes
- Examine harness wiring and connectors for open circuit.
No - Renew LH impact sensor.
3. On completion.
. Arm and verify the SRS system.
Issue 1 August 1994 15.1 - 34 X300 EDM

Electrical IT
Electrical schematic - Fault Code 42
0
0
0
X300 EDM
J86-1676
1. Instrument Panel Fuse 6. Passenger-side Air Bag
2. Engine Compartment Fuse 7. RH Impact Sensor
3. Safing Sensor 8. LH Impact Sensor
4. Cable Reel Cassettes 9. Air Bag MIL Lamp
5. Driver
-side Air Bag 10. Diagnostic
Module
Fig. 1
Issue 1 August 1994 15.1 - 35

FAULT CODE 44
Front Right Impact Sensor Incorrectly Mounted to Vehicle
Normal Operation
The DM monitors the resistance value between pins 20 and 3. If a resistance of greater than 2.052 is detected the MIL
Lamp will illuminate and fault code 44 will be present, indicating incorrect mounting of the RH impact sensor. Secure
connections to ground at both the sensor case and the vehicle are necessary to avoid this fault.
Possible Causes
0 Poor or dirty connection between RH impact sensor case and vehicle ground.
0 Poor or dirty termination at impact sensor internal ground.
0 Open circuit on wiring between DM pin 20 and impact sensor ground terminal.
Fault Diagnosis
1. Circuit - check
Disarm the SRS system, and disconnect the battery earth lead.
. Disconnect the DM.
Measure resistance between DM pin 20 and pin 3 (ground).
. Is the resistance greater than 2.052.
Yes - Proceed to step 2.
No - Renew DM
2. Sensor - check
. Disconnect RH impact sensor from main harness.
. Measure resistance between sensor terminal 4 and ground.
. Is the resistance greater than 2.052 7
Yes -
. Remove sensor from mountings, clean all mounting surfaces (including chassis) and refit.
. Re-test resistance and renew sensor if value is still above 2.052.
NO -
. Examine harness for broken, dirty or incorrectly seated connectors.
3. On completion.
Arm and verify SRS system.
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Electrical schematic - Fault Code 44
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P17
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1. Instrument Panel Fuse 6. Passenger-side Air Bag 2. Engine Compartment Fuse 7. RH Impact Sensor
3. Safing Sensor 8. LH Impact Sensor
4. Cable Reel Cassettes 9. Air Bag MIL Lamp
5. Driver
-side Air Bag 10. Diagnostic
Module
Fig. 1
7
J86-1677
X300 EDM 15.1 - 37 Issue 1 August 1994