1998 JAGUAR X308 engine dtc

CAN Input Signals
Traction status ABS malfunction ABS status Engine torque status Throttle position Accelerator pedal position Engine torque reduction confirmation Engine speed Engine coolant temperature Cruise status OBDII fault code clear request Throttle malfunction warning RED or AMBER All road wheel speeds Token for network status ECM Token for network status INST Token for network status ABS Diagnostic data in from external device (PDU)
Output Signals
Solenoid valve 1 <-> 2 and 4 <-> 5 shift Solenoid valve 2 <-> 3 shift Solenoid valve 3 <-> 4 shift Solenoid valve converter lock-up clutch Control valve - modulating pressure Control valve - shift pressure
CAN Output Signals
Engine torque reduction request MIL status (whether present DTC should operate MIL) Transmission input speed Transmission output speed Converter slip Kickdown status Gear position (actual) Gear position (selected) Gear selection fault Converter lock-up status Current selected shift map Transmission oil temperature Transmission malfunction Pecus flag (state of current TCM program) Target for next gear position Gear shift torque transfer progress at shift MIL status (response to activate the MIL relevant to a DTC) OBDII fault code clear acknowledgement Transmission DTCs (P codes) Token for network status TCM Diagnostic data out to external device (PDU)
Emergency Running (elect ronic limp-home mode)
The TCM constantly monitors the transmissi on for faults. In the event of a problem the TCM will adopt the limp-home mode, in which the gear currently held remains engaged, until P is selected. The modulati ng and shift pressures will increase to
maximum and converter lock-up will be inhibited.
Following the selection of P , the only ratios available will be 2 (irrespective of forward ratio manual selection) and R .
With the vehicle at rest, the procedure to manually select is as follows:
1. 1. Select P .

Pinpoint test C: P0702, P0753, P0758, P0763
Connect the scan tool 1
Have the DTC(s) and freeze frame data been recorded?
Yes GO to B2
B2: RENEW TORQUE CONVERTER
Renew the torque converter 1
Has the torque converter been renewed?
Yes GO to B3
B3: 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 C : P0702, P0753, P0758, P0763
TEST CONDITIONSDETAILS/RESULTS/ACTIONS
C1: 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 C2
C2: CHECK HARNESS +VE CONTINUITY

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.

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?

Connect the scan tool 1
Have the DTC(s) and freeze frame data been recorded?
Yes GO to A2
A2: CHECK O2 SENSOR HEATER CONTINUITY
Ignition switch to position 0 1
Disconnect EM021
Bracket on top of gearbox or Bulkhead rear of engine
2
With EM021 disconnected, measure the resistance between
EM021/001 and EM021/002. 3
Is the resistance between 4 and 10 OHM?
Yes
GO to A3
No Renew O2 sensor; reconnect plug(s)
GO to A6
A3: CHECK FOR O2 SENSOR FAILURE
Run the engine for a period to warm the sensor and then
maintain a steady speed of approximately 2500 rpm. 1
Disconnect EM021 2

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

Connect the scan tool 1
Have the DTC(s) and freeze frame data been recorded?
Yes GO to B2
B2: CHECK FOR LOW EX HAUST TEMPERATURE
Check the engine and exhaust system for normal running
temperature 1
Is the engine and exhaust sy stem up to normal running
temperature?
Yes GO to B3
No Rectify possible leaking exhaust manifold / catalyst, general
causes of an over rich mixture and engine cooling system
operation. Test the system for correct operation.
GO to B8
B3: CHECK FOR O2 SENS OR HEATER CONTINUITY
Ignition switch to position 0 1
Disconnect EM021
Bracket on top of gearbox or Bulkhead rear of engine
2
With EM021 disconnected, measure the resistance between
EM021/001 and EM021/002. 3
Is the resistance between 4 and 10 OHM?
Yes
GO to B4
No Renew O2 sensor, reconnect plug(s).
GO to B8
B4: CHECK FOR O2 SENSOR FAILURE