Jaguar X-Type Sedan and Estate (Wagon). Manual - part 315

If the 20 thou test fails to run a second time, repeat the entire test.

Check for DTCs. Rectify as indicated.

40 thou test, using GDS510

Avoiding high engine loads, drive the vehicle steadily between 64 and 97 Kilometres per hour. (40 and 60 miles per hour)
When the test has initialised, using the GDS510, monitor the Evaporative valve duty cycle, CCV status, and the FTPS. (The GDS510
will give an indication when the test is active).
When the test has initialised (CCV closed), it will take up to 90 seconds to complete.
To make sure that the test has completed, TID 08 in mode 6 must be checked. (If the test has not completed, this TID will display
0. Any other value indicates test completion).
If the test did not complete, repeat the test.

20 thou test, using GDS510

Continue driving the vehicle steadily between 64 and 97 Kilometres per hour. (40 and 60 miles per hour) avoiding high engine loads
for a further 10 minutes.
Avoiding excessive fuel movement, gently bring the vehicle to rest. (Coast to a stop).
Allow the vehicle to idle for 2 minutes.
When the test has initialised, using the GDS510, monitor the Evaporative valve duty cycle, CCV status, and the FTPS. (The GDS510
will give an indication when the test is active).
When the test has initialised (CCV closed), it will take up to 90 seconds to complete.
To make sure that the test has completed, TID 06 in mode 6 must be checked. (If the test has not completed, this TID will display
0. Any other value indicates test completion).
If the test did not complete, repeat the test.
If the 20 thou test has not run, it is likely that the vapor concentration in the purge system is too great. In this case, drive the
vehicle steadily for a further 30 minutes, avoiding excessive fuel movement, then repeat the test.
Check for DTCs. Rectify as indicated.

40 thou and 20 thou tests using no additional equipment

The test procedure and conditions are as for the Jaguar approved diagnostic system or GDS510, but no confirmation of the test having run is
possible without the use of one of these instruments. The DTC will be set if the fault still exists, but the possibility exists that the
conditions for the test to run may not have been met, in which case, the DTC may not be set until the owner reproduces the conditions in
which the fault originally occurred.

Drive cycle for "green" ECM

To enable the ECM to re-learn fuelling adaptions.

• NOTE: This procedure should be performed whenever the vehicle battery has been disconnected.

Due to component tolerance and wear during the normal running of a vehicle, fuelling and air requirements for an engine will vary over time.
The ECM has the ability to adjust for this variation by "learning" the level of compensation that is required. (These compensation values are
referred to as adaptions)

If the vehicle battery is disconnected, all adaptions held within the ECM will be lost (ie, set to Zero) The ECM is then referred to as "green".
To enable the vehicle to function correctly, the ECM must "relearn" these adaptions.

There are four areas or sites that need to be relearnt.

Allow the vehicle to idle until fully warm. (Temperature gauge just below mid-point).
Allow to idle for a further three minutes, minimum.
Drive the vehicle with the air conditioning OFF on a level road using a constant throttle, or speed control if fitted, for at least one
minute in the following gears, at the stated engine speeds for each of the sites below.

The vehicle speed is for guidance only. DO NOT use the vehicle speed as the target to set adaptions.

"Green" ECM drive cycle chart. Site 1

Engine/transmission software level

3.0L Man Z65 on

3.0L Auto Z65 on

2.5L Man Z65 on

2.5L Auto Z65 on

GEAR

P/N

ENGINE SPEED

Idle

VEHICLE SPEED (GUIDE ONLY)

0MPH

"Green" ECM drive cycle chart. Site 2

Engine/transmission software level

3.0L Man Z65 on

3.0L Auto Z65 on

2.5L Man Z65 on

2.5L Auto Z65 on

GEAR

3rd

ENGINE SPEED

2000RPM

1750RPM

2000RPM

1750RPM

VEHICLE SPEED (GUIDE ONLY)

45KPH (28MPH)

39KPH (24MPH)

47KPH (29MPH)

37KPH (23MPH)

"Green" ECM drive cycle chart. Site 3

Engine/transmission software level

3.0L Man Z65 on

3.0L Auto Z65 on

2.5L Man Z65 on

2.5L Auto Z65 on

GEAR

4th

ENGINE SPEED

2250RPM

2000RPM

2250RPM

VEHICLE SPEED (GUIDE ONLY)

68KPH (42MPH )

64KPH (40MPH)

72KPH (45MPH)

69KPH (43MPH )

"Green" ECM drive cycle chart. Site 4

Engine/transmission software level

3.0L Man Z65 on

3.0L Auto Z65 on

2.5L Man Z65 on

2.5L Auto Z65 on

GEAR

4th

ENGINE SPEED

2750RPM

2500RPM

2750RPM

VEHICLE SPEED (GUIDE ONLY)

84KPH (52MPH)

80KPH (50MPH)

87KPH (54MPH)

Bring the vehicle to rest, allow to idle for one minute.

WARNING: The following tests may involve parts which are hot.

1
2
3

If sufficient adaptions have occurred, the Evaporative valve should now be operating. This can be verified manually by either touching or
listening to the valve. By touching the Evaporative valve, it should be possible to feel the valve switching. Listening to the Evaporative
valve is best done using a workshop stethoscope, through which it should be possible to hear the valve operating.

Diagnostic Trouble Code Charts

Diagnostic Trouble Code Chart

Diagnostic Trouble

Code

Description

Possible Source

Action

P0441

Evaporative purge valve flow check.

Evaporative purge valve.
Hose and connections.

GO to Pinpoint Test

P0442

Leak detected. 40 thou.

Hoses and connections.
Fuel tank filler cap.
Carbon canister.
Canister close valve.

GO to Pinpoint Test

P0443

Evaporative purge valve leaking.

Evaporative purge valve.

GO to Pinpoint Test

P0444

Evaporative purge valve circuit open. Evaporative purge valve or circuit.

GO to Pinpoint Test

P0445

Evaporative purge valve circuit
shorted.

Evaporative purge valve or circuit.

GO to Pinpoint Test

P0446

Canister close valve stuck closed.

Filter box.
Hoses and connections.
CCV.
Fuel tank vapor port.
Carbon canister.

GO to Pinpoint Test

P0447

Canister close valve circuit open
circuit.

CCV or circuit.

GO to Pinpoint Test

P0448

Canister close valve circuit shorted.

CCV or circuit.

GO to Pinpoint Test

P0450

Fuel tank Pressure Sensor
malfunction

FTPS.

GO to Pinpoint Test

P0452

FTPS low input.

FTPS or circuit.

GO to Pinpoint Test

P0453

FTPS high input.

FTPS or circuit.

GO to Pinpoint Test

P0455

Gross leak.

Fuel tank and lines.
Fuel filler cap.
Carbon Canister.
Evaporative purge valve stuck closed.
CCV.
Blockage in vapor lines from engine to fuel
tank.

GO to Pinpoint Test

P0456

Leak detected. 20 thou.

Fuel tank and lines.
Fuel filler cap.
Carbon Canister.
CCV.

GO to Pinpoint Test

Pinpoint Tests

PINPOINT TEST A : P0441. EVAPORATIVE PURGE VALVE FLOW CHECK. VALVE STUCK CLOSED

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

A1: CHECK EVAPORATIVE PURGE VALVE IS OPERATING

Disconnect the Vapor pipe from the inlet port of the Evaporative purge valve (ie, from fuel tank).
RUN the engine for 2 minutes, making sure that the engine reaches normal operating temperature.
CHECK that the Evaporative purge valve is operating, by touch or by sound. (Using a stethoscope, it will be possible
to hear the valve operating).

Is the valve operating?
Yes

GO to A2

CHECK for DTC P0444, P0445. Conduct "green" ECM drive cycle. For additional information, see "diagnostic drive
cycles" above.

A2: CHECK FOR VACUUM AT EVAPORATIVE PURGE VALVE

CHECK for vacuum at the valve.

Is a vacuum present?
Yes

Possible intermittent fault. CLEAR the DTC. Carry out a flow check monitor drive cycle. RECHECK DTCs. For additional
information, see "diagnostic drive cycles" above.

GO to A3

A3: CHECK FOR BLOCKAGES IN THE SYSTEM

CHECK for blockages in the intake manifold drilling, and the pipe from the intake manifold to the Evaporative purge
valve.

Was a blockage found?
Yes

Rectify the blockage. CLEAR the DTC. Carry out a flow check monitor drive cycle. For additional information, see
"diagnostic drive cycles" above.

INSTALL a new Evaporative purge valve.
REFER to

Evaporative Emission Canister Purge Valve

in this section.

CLEAR the DTC. Carry out a flow check monitor drive cycle. RECHECK DTCs. For additional information, see
"diagnostic drive cycles" above.

1
2

1
2
3

1
2

1
2
3

PINPOINT TEST B : P0442. LEAK DETECTED. 40 THOU

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

B1: CHECK FUEL FILLER CAP FITMENT AND CONDITION OF PIPES AND CONNECTORS

Make sure that the fuel filler cap is correctly installed and tightened. (Minimum 3 clicks).
Check the condition of all accessible pipes and connectors in the vapor line.

Are all pipes and connectors in good condition?
Yes

Suspect concern with fuel tank assembly or carbon canister assembly.

REPAIR as necessary. CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle. RECHECK DTCs. For
additional information, see "diagnostic drive cycles" above.

PINPOINT TEST C : P0443. EVAPORATIVE PURGE VALVE LEAKING

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

C1: CHECK EVAPORATIVE PURGE VALVE INTEGRITY

Disconnect the outlet pipe from the Evaporative purge valve. (From valve to manifold).
Apply a vacuum to the valve outlet pipe.

Does the valve hold vacuum?
Yes

Possible intermittent fault. CLEAR the DTC. Carry out a full Evap system monitor drive cycle. RECHECK DTCs. For
additional information, see "diagnostic drive cycles" above.

INSTALL a new Evaporative purge valve.
REFER to

Evaporative Emission Canister Purge Valve

in this section.

CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle. RECHECK DTCs. For additional information,
see "diagnostic drive cycles" above.

PINPOINT TEST D : P0444. EVAPORATIVE PURGE VALVE CIRCUIT OPEN CIRCUIT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

D1: CHECK SUPPLY VOLTAGE TO EVAPORATIVE PURGE VALVE

Disconnect Evaporative purge valve electrical connector, JB170.
Turn the ignition switch to the ON position.
Measure the voltage at JB170, pin 1 (GU).

Is the voltage greater than 10 volts?
Yes

GO to D2

REPAIR the circuit between Evaporative purge valve electrical connector, JB170, pin 1 (GU) and the EMS control relay.
For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition switch to the ON position. Leave
switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see "diagnostic drive cycles" above.

D2: CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR CONTINUITY

Disconnect the ECM electrical connector, EN16.
Measure the resistance between EN16, pin 66 (UY) and JB170, pin 2 (UY).

Is the resistance less than 5 ohms?
Yes

GO to D3

REPAIR the circuit between EN16, pin 66 (UY) and JB170, pin 2 (UY). CLEAR the DTC. Turn the ignition switch to the
ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see "diagnostic
drive cycles" above.

D3: CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR SHORT TO GROUND

Measure the resistance between JB170, pin 2 (UY) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

REPAIR the short to ground. For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition
switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see
"diagnostic drive cycles" above.

GO to D4

D4: CHECK THE EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR SHORT TO BATTERY

Connect the ECM electrical connector, EN16.
Turn the ignition switch to the ON position.
CHECK for a voltage at JB170, pin 2 (UY).

Is the voltage greater than 1 volt?
Yes

REPAIR the short to battery. For additional information, refer to wiring diagrams. CLEAR the DTC. Turn the ignition
switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. For additional information, see
"diagnostic drive cycles" above.

GO to D5

D5: CHECK THE EVAPORATIVE PURGE VALVE RESISTANCE

CHECK the resistance between pins 1 and 2 of the Evaporative purge valve.

Is the resistance 30 to 34 ohms at 20°C (68°F)?
Yes

INSTALL a new ECM. REFER to Section

303-14A Electronic Engine Controls

303-14B Electronic Engine Controls

. Before

replacing a ECM, contact Dealer technical support.

INSTALL a new Evaporative purge valve.
REFER to

Evaporative Emission Canister Purge Valve

in this section.

CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK
DTCs. For additional information, see "diagnostic drive cycles" above.

PINPOINT TEST E : P0445. EVAPORATIVE PURGE VALVE CIRCUIT SHORTED

1
2
3

1
2

1
2
3

1
2

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

E1: CHECK EVAPORATIVE PURGE VALVE SIGNAL WIRE FOR SHORT TO GROUND

Disconnect Evaporative purge valve electrical connector JB170.
Disconnect ECM electrical connector, EN16.
Measure the resistance between JB170, pin 2 (UY) and ground.

Is the resistance less than 10,000 ohms?
Yes

NO short found. A short in the Evaporative purge valve supply circuit may result in a blown fuse 36, PDFB. See initial
checks. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds.
RECHECK DTCs. For additional information, see "diagnostic drive cycles" above.

PINPOINT TEST F : P0446. CANISTER CLOSE VALVE STUCK CLOSED

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

F1: CHECK FOR FLOW THROUGH SYSTEM

• NOTE: Depending on the severity of the blockage, it is possible that some difficulty has been experienced during refuelling.

Disconnect the vapor line from Evaporative purge valve inlet port and apply low pressure.
CHECK for free flow of air through the following, paying attention to kinked or flattened pipes.

Filter.
Interconnecting pipe. (Filter to CCV).
CCV.
Interconnecting pipe. (CCV to carbon canister).
Carbon canister.
Interconnecting pipe. (Carbon canister to fuel tank).
Fuel tank vapor port.

Is there a restriction?
Yes

RECTIFY as necessary. CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle, RECHECK DTCs. For
additional information, see "diagnostic drive cycles" above.

CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle, RECHECK DTCs. For additional information,
see "diagnostic drive cycles" above.

PINPOINT TEST G : P0447. CANISTER CLOSE VALVE CIRCUIT OPEN CIRCUIT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

G1: CHECK SUPPLY VOLTAGE TO CCV

Disconnect canister close valve electrical connector, FT5.
Turn the ignition switch to the ON position.
Measure the voltage at FT5, pin 1 (GU).

Is the voltage greater than 10 volts?
Yes

GO to G2

REPAIR the circuit between FT5, pin 1 (GU) and the EMS control relay. For additional information, refer to wiring
diagrams. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds.
RECHECK DTCs. For additional information, see "diagnostic drive cycles" above.

G2: CHECK THE CCV SIGNAL WIRE FOR CONTINUITY.

Disconnect the ECM electrical connector, EN16.
Measure the resistance between EN16, pin 67 (O) and FT5, pin 2 (O).

Is the resistance less than 5 ohms?
Yes

GO to G4

REPAIR the circuit between EN16, pin 67 (O) and FT5, pin 2 (O). For additional information, refer to wiring diagrams.
CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK
DTCs. For additional information, see "diagnostic drive cycles" above.

G3: CHECK THE CCV SIGNAL WIRE FOR SHORT TO BATTERY

Turn the ignition switch to the ON position.
CHECK for a voltage at FT5, pin 2 (O).

Is the voltage greater than 1 volt?
Yes

GO to G4

G4: CHECK THE CCV RESISTANCE

CHECK the resistance between pins 1 and 2 of the CCV.

Is the resistance 25 to 30 Ohms at 20°C (68°F)?
Yes

INSTALL a new ECM. REFER to Section

303-14A Electronic Engine Controls

303-14B Electronic Engine Controls

Before replacing a ECM, contact Dealer technical support.

INSTALL a new CCV. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30
seconds. RECHECK DTCs. For additional information, see "diagnostic drive cycles" above.

PINPOINT TEST H : P0448. CCV CIRCUIT SHORTED.

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

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