Page 1601 of 2490
With EM023 disconnected measure the insulation
resistance between sensor pin 001 and sensor body. 1
Repeat for pin 003 and sensor body. 2
Is the resistance > 10 MOHM?
Yes
GO to F11
No Renew the O2 sensor and reconnect plug(s).
GO to F10
F10: STOP
Perform appropriate service drive cycle and check for the
presence of DTC. 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service
F11: SIGNAL GROUND 1 CONTINUITY
Page 1602 of 2490
With EM010 and EM014 disconnected, measure the
resistance between EM010/023 and chassis ground
EM008L. 1
Is the resistance < 0.5 OHM?
Yes GO to F12
No Inspect harness / connector EM010 for corrosion, damage,
or pushed back pin.
Inspect earthing stud EM008L for corrosion or damage.
Inspect harness / spli ce EMS36 for damage.
Repair as required an d reconnect plug(s).
GO to F13
F12: SIGNAL GROUND 2 CONTINUITY
Page 1603 of 2490
With EM010 and EM014 disconnected, measure the
resistance between EM014/004 and chassis ground
EM008L. 1
Is the resistance < 0.5 OHM?
Yes GO to F14
No Inspect harness / connector EM014 for corrosion, damage,
or pushed back pin.
Inspect earthing stud EM008L for corrosion or damage.
Inspect harness / spli ce EMS38 for damage.
Repair as required an d reconnect plug(s).
GO to F13
F13: CHECK FOR HEATED O2 SENSOR CONTINUITY
Page 1604 of 2490
With EM012 and EM023 disconnected, measure the
resistance between EM012/014 and EM023/003. 1
Is the resistance < 0.5 OHM?
Yes GO to F14
No Inspect harness / connectors EM012 and EM023 for
corrosion, damaged / pushed back pins.
Repair as required an d reconnect plug(s).
GO to F19
F14: HEATED O2 SENSOR SCREEN GROUND CONTINUITY
Page 1605 of 2490
With EM012 and EM023 disconnected, measure the
resistance between EM012/022 and EM023/004. 1
Is the resistance < 0.5 OHM?
Yes GO to F15
No Inspect harness / connectors EM012 and EM023 for
corrosion, damaged / pushed back pins.
Repair as required an d reconnect plug(s).
GO to F19
F15: CHECK FOR SHORT TO B+
Page 1606 of 2490
With EM010 and EM012 disconnected, measure the
voltage between EM010/023 and EM012/014. 1
Is the voltage 0 (zero) V?
Yes GO to F16
No Inspect harness / connecto rs EM010, EM012 and EM023
for corrosion, damaged / pushed back pins.
Repair as required an d reconnect plug(s).
GO to F19
F16: CHECK FOR SHORT TO B+
Page 1607 of 2490
With EM010 and EM012 disconnected, measure the
voltage between EM010/023 and EM012/022. 1
Is the voltatage 0 (zero) V?
Yes GO to F17
No Inspect harness / connecto rs EM010, EM012 and EM023
for corrosion, damaged / pushed back pins.
Repair as required an d reconnect plug(s).
GO to F19
F17: CHECK FOR SHORT TO B+ AT O2 SENSOR HEATER
Page 1608 of 2490
Ignition switch to position 0 1
Remove EMS fuse F14. 2
Disconnect EM010 and EM015. 3
Using a link lead, bridge EM010/016 and EM010/022. 4
Measure the voltage between EM010/023 and
EM015/001. 5
Is the voltage 0 (zero) V?
Yes Replace EMS fuse F14 but retain link lead
GO to F18
No Inspect connectors EM010, EM015, and EM023 for
corrosion, damaged / pushed back pins or repair the
harness; reconnect plug(s).
GO to F19
F18: CHECK B+ AT O2 SENSOR HEATER CIRCUIT