Jaguar X-Type Sedan and Estate (Wagon). Manual - part 316
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H1: CHECK CCV SIGNAL WIRE FOR SHORT TO GROUND.
Disconnect CCV electrical connector, FT5.
Disconnect ECM electrical connector, EN16.
Measure the resistance between FT5, pin 2 (O) 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.
No
NO short found. A short in the CCV supply circuit may result in a blown fuse 36, PDFB. See initial checks.
PINPOINT TEST I : P0450. FUEL TANK PRESSURE SENSOR MALFUNCTION.
• NOTE: Prior to commencing this test, REFER to Section
303-14A Electronic Engine Controls
/
303-14B Electronic Engine Controls
.
Electronic Engine Controls, Diagnosis and Testing, sensor supply and ground circuits.
• NOTE: Access to the FTP sensor involves the removal of the fuel tank. To reduce the amount of work necessary, a slave harness and
sensor could be used. This can be connected at the access port beneath the rear seat. Tests can then be carried out via the slave harness
and sensor. If system operation is normal with the slave harness and sensor, the fault lies in the vehicle's harness or sensor.
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
I1: CHECK EVAPORATIVE PURGE VALVE IS OPERATING.
Disconnect electrical connector CA005. (Beneath rear seat).
Turn the ignition switch to the ON position.
Measure the voltage between pins 4 and 6 of CA005.
Is the voltage 2.9 - 3.7 volts?
Yes
GO to I2
. Reconnect CA005.
No
INSTALL a new FTPS.
REFER to Section
310-01 Fuel Tank and Lines
.
Reconnect CA005. 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.
I2: CHECK SIGNAL VOLTAGE AT FTPS.
Run the engine for two minutes, and until fully warm.
Make sure Evaporative purge valve is operating.
Steadily increase engine speed to 3000 RPM.
Measure the voltage between pins 4 and 6 of CA005.
Does the voltage reduce?
Yes
Possible intermittent fault. RECHECK DTCs, For additional information, see "diagnostic drive cycles" above.
Contact Dealer technical support.
No
INSTALL a new FTPS.
REFER to Section
310-01 Fuel Tank and Lines
.
CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle. RECHECK DTCs. For additional
information, see "diagnostic drive cycles" above.
PINPOINT TEST J : P0452, O0453. FUEL TANK PRESSURE SENSOR LOW/HIGH INPUT.
• NOTE: Prior to commencing this test, REFER to Section
303-14A Electronic Engine Controls
/
303-14B Electronic Engine Controls
.
Electronic Engine Controls, Diagnosis and Testing, sensor supply and ground circuits.
• NOTE: Access to the FTP sensor involves the removal of the fuel tank. To reduce the amount of work necessary, a slave harness and
sensor could be used. This could be connected at the access port beneath the rear seat. Tests can then be carried out via the slave harness
and sensor. If system operation is normal with the slave harness and sensor, the fault lies in the vehicle's harness or sensor.
TEST
CONDITIONS
DETAILS/RESULTS/ACTIONS
J1: CHECK FTPS SIGNAL WIRE FOR CONTINUITY UP TO CONNECTOR CA5.
Disconnect ECM electrical connector, EN16.
Disconnect FTPS electrical connector, CA5.
Check for continuity between EN16, pin 104 (RG) and CA5, pin 4 (RG).
This test will not check the continuity of the harness from CA5 to FT1. If the circuit is continuous to CA5, the fuel
tank must be removed and the harness and sensor continuity checked.
Is the circuit continuous?
Yes
INSTALL a new FTPS, (and/or harness, CA5 to FT1). 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. If
the DTC is repeated, 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.
No
REPAIR the circuit between EN16, pin 104 (RG) and CA5, pin 4 (RG). CLEAR the DTC. Carry out a full Evaporative
system monitor drive cycle. For additional information, see "diagnostic drive cycles" above. RECHECK DTCs.
J2: CHECK FTPS SUPPLY WIRE FOR SHORT TO GROUND UP TO CONNECTOR CA5
Measure the resistance between CA5, pin 5 (OY) and GROUND.
This test will not check the integrity of the harness from CA5 to FT1. If the circuit is sound to CA5, the fuel tank
must be removed and the harness and sensor continuity checked.
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.
No
GO to J3
.
J3: CHECK FTPS SIGNAL WIRE FOR SHORT TO GROUND, UP TO CONNECTOR CA5.
Connect ECM electrical connector, EN16.