fault code JAGUAR X308 1998 2.G Repair Manual

Pinpoint test H: P0730, P0780
Connect the scan tool 1
Have the DTC(s) and freeze frame data been recorded?
Yes GO to G2
G2: RENEW TCM
Renew the TCM 1
Has the TCM been renewed?
Yes GO to G3
G3: END
• NOTE: The following step must be carried out in order that sy stem adaptions can take place.
Drive the vehicle for a period from cold to include idle, brisk
acceleration and steady state cruising up to and including
normal engine temperature. Check for the presence of DTC 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service
PINPOINT TEST H : P0730, P0780
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
H1: RETRIEVE DTCS
• NOTE: Battery and or ECM disconnection prior to scanning wi ll erase all data, ensure that the correct DTC is present.
Connect the scan tool 1
Have the DTC(s) and freeze frame data been recorded?
Yes GO to H2
H2: RENEW VALVE BODY ASSEMBLY
Renew the valve body assembly 1
Drive the vehicle for a period from cold to include idle, brisk
acceleration and steady state cruising up to and including
normal engine temperature. Check for the presence of DTC 2
Has the fault code cleared?

Yes STOP
No GO to H3
H3: RENEW TRANSMISSION
Renew the transmission 1
Has the transmission been renewed?
Yes GO to H4
H4: END
Drive the vehicle for a period from cold to include idle, brisk
acceleration and steady state cruising up to and including
normal en
gine temperature. Check for the presence of DTC
1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service

With EM007 disconnected, measure the resistance
between EM007/028 and EM007/009 1
With the selector lever at D, 4, 3, 2 is the resistance < 0.5
OHM?With the selector lever at P, R, N is the resistance >50
KOHM?
Yes GO to A11
No Inspect EM007 and EM047 for corrosion, bent / pushed
back pins or locate and repair the harness EM007/009 to
EM047/00D - test the system for normal operation.
No OK, but fault still present?
Yes Renew rotary position switch and test the system for
normal operation.
A11: END
Perform appropriate service drive cycle and check for the
presence of DTC 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service

With EM061 and CC008 disconnected, measure the
resistance between CC008/002 and EM008R 1
Is the resistance < 0.5 OHM?
Yes GO to A6
No Inspect CC008 and EM063 for corrosion, bent / pushed
back pins or locate harness / ground EM8R, splices
EMS017 and EMS004. Repair as necessary and test the
system for normal operation.
A6: END
Perform appropriate service drive cycle and check for the
presence of DTC 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service

Bracket on top of gearbox or Bulkhead rear of engine
With EM021 disconnected, measure the voltage between
EM021/003 and EM021/004. 3
Is the voltage between 600mV and 1.0 Volt?
Yes
GO to A4
No Renew O2 sensor; reconnect plug(s)
GO to A6
A4: CHECK FOR O2 SENSOR FAILURE
With the conditions held as A3, suddenly decelerate to idle. 1
Has the voltage dropped to 400mV or less ?
Yes GO to A5
No Renew O2 sensor; reconnect plug(s)
GO to A6
A5: CHECK FOR O2 SENSOR FAILURE
With the conditions held as A4, suddenly accelerate to
approximately 2500 rpm. 1
Has the voltage risen to between 600mV and 1 volt?
Yes GO to A7
No Renew O2 sensor; reconnect plug(s)
GO to A6
A6: 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
A7: HEATED O2 SENSOR SHORT CIRCUIT TO GROUND

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 A9
No Renew the O2 sensor and reconnect plug(s)
GO to A8
A8: 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
A9: SIGNAL GROUND 1 CONTINUITY

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 A12
No Inspect connector EM014 for co rrosion, damage, or pushed
back pin.
Inspect ground stud EM008L for corrosion or damage.
Inspect harness, splice EMS36, connector or ground. Repair
as required and reconnect plug(s).
Repair as required an d reconnect plug(s).
GO to A11
A11: 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
A12: CHECK FOR HEATED O2 SENSOR CONTINUITY

Pinpoint test B: P0133
Measure the voltage between EM010/023 and EM015/002 1
Is the voltage B+?
Yes Remove link lead and reconnect all connectors
GO to A18
No Check EMS fuse F14 and that EMS control relay (relay 1) is
energized and with all connections made.
GO to A18
A18: END
Perform appropriate service drive cycle and check for the
presence of DTC. 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service
PINPOINT TEST B : P0133
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
B1: RETRIEVE DTCS
• NOTE: Battery and or ECM disconnection prior to scanning wi ll erase all data, ensure that the correct DTC is present.

GO to B7
No Renew O2 sensor, reconnect plug(s).
GO to B8
B7: CHECK FOR O2 SENSOR FAILURE
With the conditions held as in B6, run the engine at 1500
rpm for approximately 2 minutes. 1
Does the displayed voltage drop below 400mV and rise above 500 mV, cycling approximately every 4 seconds?
Yes GO to B9
No Renew O2 sensor, reconnect plug(s).
GO to B8
B8: 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
B9: HEATED O2 SENSOR SHORT CIRCUIT TO GROUND

With EM021 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 B11
No Renew the O2 sensor and reconnect plug(s).
GO to B10
B10: 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
B11: SIGNAL GROUND 1 CONTINUITY