engine ignition JAGUAR X308 1998 2.G Owners Manual

DTC P1745 Pressure regulator 1 malfunctionHarness fault
Pressure regulator open circuit
Pressure regulator short
Connector pins(s) bent, loose or corroded
*
*
*
*GO to Pinpoint
Test D
*
DTC P1746 Pressure regulator 2 malfunctionHarness fault
Pressure regulator open circuit
Pressure regulator short
Connector pins(s) bent
, loose or corroded
*
*
*
*GO to Pinpoint
Test D
*
DTC P1747 Pressure regulator 3 malfunctionHarness fault
Pressure regulator open circuit
Pressure regulator short
Connector pins(s) bent
, loose or corroded
*
*
*
*GO to Pinpoint
Test D
*
DTC P0743 Torque converter clutch system
electricalHarness fault
Pressure regulator open circuit
Pressure regulator short
Connector pins(s) bent
, loose or corroded
*
*
*
*GO to Pinpoint
Test D
*
DTC P1748 Pressure regulator 5 malfunctionHarness fault
Pressure regulator open circuit
Pressure regulator short
Connector pins(s) bent
, loose or corroded
*
*
*
*GO to Pinpoint
Test D
*
DTC P0721 Output / turbine speed sensor circuit
malfunction• NOTE: This DTC is non OBDII but is included for
reference to P1720
Output speed sensor signal faulty
Harness fault
Connector pins(s) bent , loose or corroded
Damaged harness screen
*
*
*
*GO to Pinpoint
Test E
*
DTC P1720 Loss of output speed and wheel
speed informationAs P0721
ABS fault
*
*GO to Pinpoint
Test E
*
DTC P0715 Input / turbine speed sensor circuit
malfunctionInput speed sensor signal faulty
Harness fault
Connector pins(s) bent
, loose or corroded
Damaged harness screen
*
*
*
*GO to Pinpoint
Test F
*
DTC P1722 Stall speedOutput speed sensor signal faulty
Harness fault
Connector pins(s) bent
, loose or corroded
TCM failure
Transmission mechanical fault
*
*
*
*
*GO to Pinpoint
Test G
*
DTC P1726 Engine overspeed malfunctionTransmission mechanical fault
*GO to Pinpoint
Test H
*
DTC P1730 Gear control malfunction 2,3,5,Input speed sensor signal faulty
Output speed sensor signal faulty
Harness fault
Connector pins(s) bent
, loose or corroded
TCM failure
Transmission mechanical fault
*
*
*
*
*
*GO to Pinpoint
Test I
*
DTC P1734 Gear control malfunction 4Input speed sensor signal faulty
Output speed sensor signal faulty
Harness fault
Connector pins(s) bent
, loose or corroded
TCM failure
Transmission mechanical fault
*
*
*
*
*
*GO to Pinpoint
Test I
*
DTC P1779 Load control malfunctionInput speed sensor signal faulty
Output speed sensor signal faulty
Harness fault
Connector pins(s) bent
, loose or corroded
TCM failure
Transmission mechanical fault
*
*
*
*
*
*GO to Pinpoint
Test I
*
DTC P1603 EEPROM malfunctionSee Monitoring Procedure
*GO to Pinpoint
Test J
*
DTC P1605 TCM checksum failureSee Monitoring Procedure
*GO to Pinpoint
Test J
*
DTC P1608 Watchdog malfunctionSee Monitoring Procedure
*GO to Pinpoint
Test J
*
DTC P1793 Ignition supply malfunction >16 < 7
voltsBattery charging system fault
Harness fault
Connector loose or corroded
*
*
*GO to Pinpoint
Test K
*

Pinpoint test A: P0741, P0742, P0743
Pinpoint test B: P0743
Connector pin(s) bent or tracking between
connections
*
DTC P1789 Ignition supply malfunction >7 < 9
voltsBattery charging system fault
Blown fuse
Harness fault
Connector loose or corroded
Connector pin(s) bent or tracking between
connections Ground fault
*
*
*
*
*
*GO to Pinpoint
Test K
*
DTC P0710 Transmission fluid temperature
sensor malfunctionDamaged sensor
Sensor out of range / short
Harness open circuit
Harness short
Connector loose or corroded
*
*
*
*
*GO to Pinpoint
Test L
*
PINPOINT TEST A : P0741, P0742, P0743
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
A1: 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 A2
A2: RENEW TORQUE CONVERTER
Renew the torque converter 1
Has the torque converter been renewed?
Yes GO to A3
A3: 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 B : P0743
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

Pinpoint test D: P0702, P1745, P1746, P1747, P0743, P1748
Renew the solenoid; refer to 44.15.50.
C13: INTERNAL TRANSMISSION HARNESS CHECK
Measure the resistance from transmission internal harness
multiplug to the relevant solenoid connector 1
Is the resistance < 0.5 OHM?
Yes GO to C14
No Renew the internal harnes s; refer to 44.15.35.
C14: END
Cycle the ignition ON - (OFF for 2 minutes) - ON, start the
engine and run >1600 rpm 1
Has the fault code cleared?
Yes
STOP
No P0702 present?
Yes GO to D1
No P0753, P0758, P0763 present?
Yes Contact Jaguar Service
PINPOINT TEST D : P0702, P1745, P1746, P1747, P0743, P1748
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
D1: 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 D2
D2: CHECK HARNESS +VE CONTINUITY

Pinpoint test E: P1720 (P0721)
GO to D13
No Renew the pressure regulator; refer to 44.15.51.
D13: INTERNAL TRANSMISSION HARNESS CHECK
Measure the resistance from transmission internal harness
multiplug to the relevant pr essure regulator connector 1
Is the resistance < 0.5 OHM?
Yes
GO to D14
No Renew the internal harnes s; refer to 44.15.35.
D14: END
Cycle the ignition ON - (OFF for 2 minutes) - ON, start the
engine and run >1600 rpm 1
Has the fault code cleared?
Yes
STOP
No Contact Jaguar Service
PINPOINT TEST E : P1720 (P0721)
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
E1: 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 E2
E2: CHECK HARNESS +VE CONTIN UITY (OUTPUT SPEED SENSOR)

Is underhood fuse F1 OK?
Yes GO to K3
No Renew the fuse (10A) and te st the system for normal
operation
K3: CHECK SWITCHED POWER SUPPLY
With EM007 disconnected measure the voltage between
EM007/054 and ground EM008R 1
Repeat for EM007/055 and ground EM008R 2
B+?
Yes Cycle the ignition ON - (OFF for 2 minutes) -
ON, start the engine and run >1600 rpm, if the fault re-logs contact
Jaguar Service
No No re-log?
GO to K5
No GO to K4
K4: CHECK HARNESS CONTINUITY - SWITCHED POWER SUPPLY

it overflows from the plug orifice. 2. CAUTION: It is essential that only the specified
fluid is used.
Wait until the flow of fluid has reduced to a trickle.

3. Fit, but do not tighten the plug.
4. Prepare PDU (at the base station).
1. Install the appropriat e disk and switch ON.
2. Select the vehicle specification - ENTER.
3. From Engineering Tools select Toolbox - ENTER.
4. From Toolbox select Powertrain - ENTER.
5. Connect MPA and download cable to PDU and base station.
6. Select Datalogger - ENTER.
7. Select Transmission - ENTER.
8. Disconnect download cable.
9. Connect MPA to PDU.
5. Connect PDU (at the vehicle).
1. Connect MPA cable to the vehicle diagnostic socket -
ENTER.
2. Energize the vehicle ignition - ENTER.
3. From the menu select Transmission oil temperature (TOT) - ENTER.
4. Check that the fluid temperature is <30°C.
6. From above.
7. NOTE: Ensure that the TCM is connected and functioning
correctly.
Select Park and start the engine.

2.2. Switch OFF the ignition.
3. 3. Wait 10 seconds.
4. 4. Start the engine.
5. 5. Select R (reverse will be selected).
6. 6. Select D ( 2 will be selected).
The limp-home mode will be retained until the fault is remedied or the fault code has been erased. Intermittent faults may
be cleared by cycling the ignition OFF/ON. In certain cases the component may need to be operated before the fault code is
cleared eg. a shift solenoid.
Emergency Running (mechanica l/hydraulic limp-home mode)
Should slip be detected, due to a mechanical failure or loss of pressure, the transmission will either shift to, and hold 3 or
shift to, and hold, the last gear which was known to be alright. This condition may be cleared by cycling the ignition OFF/ON
following mechanical repair.
The operator will be made aware of certain faults by a warning message on th e instrument cluster.
Data concerning OBDII related transmission failures is stored in the ECM for access via the J1962 socket.
Safety Functions
These functions are designed to safeguard against inappropriate actions by the operator as well as system malfunctions.
The electrical and diagnostic system has been designed such that system integrity is protected at all times, the safety
concept being based on th e following three points.
1. 1. The hydraulic system has 'fail-safe' characteristics regardin g its electrical operation, such that should the power
supply be lost to the electro-hydraulic actuators the transmission will initiate a limp-home mode.
2. 2. Recognition of critical shift operation by monitoring the last element in the signal path, ie the solenoid valve, and
checking by means of redundant me asured variables relative to engine, transmission and road speeds.
3. 3. Each time the vehicle is started there is a check on the entire safety hardware and the associated program parts
and signal paths. A malfunction in this part of the system, or triggering of the safety circuit, is communicated to
the operator by a warning messag e on the instrument cluster.
CAUTION: Do not engage R or P with the vehicle in motion.
Should R be engaged with the vehicle in forward motion, the transmission will default to neutral until either the vehicle
speed decreases to 4 mph or D is selected.
Towing
The vehicle may be towed provided that:
Selector in position N Speed < 50 kph Distance < 50 km
System Functions
'J' Gate Layout

With EM062 disconnected, measure the resistance
between the following, noting the relevant DTC 1
For P0702 or P0753 EM062/38 and EM062/014 2
For P0702 or P0758 EM062/38 and EM062/016 3
For P0702 or P0763 EM062/38 and EM062/015 4
Is the resistance 105 to 110 kOHM?
Yes Reconnect EM062
GO to C10
No Disconnect GB001 and reconnect EM062
GO to C9
C9: RENEW VALVE BODY ASSEMBLY
Renew the Valve Body Assembly; refer to 44.40.01. 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 C10
C10: END
Cycle the ignition ON - (OFF for 2 minutes) - ON, start
the engine and run >1600 rpm 1
Has the fault code cleared?
Yes STOP
No P0702 present?
Yes GO to D1
No

Pinpoint test E: P0702
With EM062 disconnected, measure the resistance
between the following, noting the relevant DTC 1
For P0702 or P0748 EM062/38 and EM062/036 2
For P0702 or P1748 EM062/38 and EM062/037 3
Is the resistance 16 to 18 kOHM?
Yes Reconnect EM062
GO to D9
No Renew the Valve Body Assembly; refer to 44.40.01.
Drive the vehicle for a period from cold to include idle,
brisk acceleration and steady state cruising up to and
including normal engine temperature.
GO to D9
D9: END
Cycle the ignition ON - (OFF for 2 minutes) - ON, start
the engine and run >1600 rpm 1
Has the fault code cleared?
Yes STOP
No Contact Jaguar Service
PINPOINT TEST E : P0702
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
E1: RETRIEVE DTCS
• NOTE: Battery and or ECM disconnection prior to scanning wi ll erase all data, ensure that the correct DTC is present.

moving the set position of either the gear selector lever or the selector lever on the transmission casing.
3. Tighten to 22-28 Nm.
4. Verify the 'N' setting.
6. Check that all released connec tors are safely insulated and
connect the vehicle battery.
7. Switch ON the ignition.
8. Adjust the position of the linear switch so that the selector 'N'
position graphic illuminates. Ti ghten the four screws to 0,7-1
Nm.
9. Move the gear selector to 'R' to confirm that the 'R' position
graphic illuminates.
10. Check that the engine will start when the gear selector is in
the 'N' and 'P' positions, bu t not in any other position.
11. Move the gear selector to 'N'.
12. Switch OFF the ignition.
13. Disconnect the battery.
14. Install the console assembly, operation 76.25.01.
15. Install the console finisher veneer panel, operation 76.47.26.
16. Install the J-gate surround, operation 76.25.24.
17. Perform the Battery Reconnection Procedure described in
Operation 86.15.15.