JAGUAR X308 1998 2.G Workshop Manual

Pinpoint test H: P1726
Pinpoint test I: P1730, P1734, P1779
G8: 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 H : P1726
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 TRANSMISSION
Renew the transmission 1
Has the transmission been renewed?
Yes GO to H3
H3: END
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 I : P1730, P1734, P1779
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
I1: 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 I2
I2: CHECK HARNESS +VE CONTIN UITY (INPUT SPEED SENSOR)
With EM007 and EM046 disconnected, measure the resistance between EM046/005 and EM007/042 1
Is the resistance < 0.5 OHM?
Yes
Reconnect EM046
GO to I3
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I3: CHECK HARNESS -VE CONTINUITY (INPUT SPEED SENSOR)

With EM007 and EM046 disconnected, measure the resistance between EM046/014 and EM007/006 1
Is the resistance < 0.5 OHM?
Yes GO to I4
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I4: CHECK INPUT SPEED SENSOR COIL CONTINUITY

With, EM007 disconnected, measure the sensor value
between EM007/042 and EM007/014 1
Is the resistance between 280 and 1200 OHM?
Yes GO to I5
No Renew the input speed sensor
I5: CHECK HARNESS +VE CONTIN UITY (OUTPUT SPEED SENSOR)

With EM007 and EM046 disconnected, measure the resistance between EM046/001 and EM007/016 1
Is the resistance < 0.5 OHM?
Yes Reconnect EM046
GO to I6
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I6: CHECK HARNESS -VE CONTINUITY (OUTPUT SPEED SENSOR)

With EM007 and EM046 disconnected, measure the resistance between EM046/010 and EM007/044 1
Is the resistance < 0.5 OHM?
Yes GO to I7
No Inspect EM007 and EM046 for corrosion, bent / pushed back
pins or locate and repair th e harness Test the system for
normal operation
I7: CHECK OUTPUT SPEED SENSOR COIL CONTINUITY

With, EM007 disconnected, measure the sensor value
between EM007/016 and EM007/044 1
Is the resistance between 280 and 1200 OHM?
Yes GO to I8
No Renew the output speed sensor
I8: CHECK FOR SHORT TO B+

With EM007 disconnected, measure the voltage between
EM007/016 and EM007/026 1
Repeat for EM007/026 and EM007/044 2
0V?
Yes GO to I9
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I9: CHECK HARNESS SHORT TO SCREEN

With EM007 and EM046 disconnected, measure the insulation
resistance between EM007/016 and EM007/023 1
Repeat for EM007/044 and EM007/023 2
Is the resistance > 10 MOHM?
Yes GO to I10
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I10: CHECK HARNESS CORE TO CORE INSULATION

Pinpoint test J: P1603, P1605, P1608
With EM007 and EM046 disconnected, measure the insulation
resistance between EM007/016 and EM007/044 1
Repeat for EM007/014 and EM007/042 2
Is the resistance > 10 MOHM?
Yes GO to I11
No Inspect harness / connectors EM007 and EM046 for damage,
corrosion, bent / pushed back pins. Repair as necessary and
test the system for normal operation.
I11: 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 J : P1603, P1605, P1608
• NOTE: It is important that J3 item 1 is carried out in order that system adaptions take place
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
J1: RETRIEVE DTCS
• NOTE: Following ECM power-down, the DTC will be lost and may only be disp layed when the ignition is energized