Jaguar XJ (X350). Manual — part 831

blocked/leaking

P24042F

DMTL pump sense circuit

range/performance -

signal erratic

DMTL reference leak

DMTL pump circuit: short

circuit, high resistance

DMTL pipework

blocked/leaking

Check the DMTL pipework.

For DMTL pump tests, GO

to Pinpoint Test

G532445p4.

P240500

DMTL pump sense circuit

low

DMTL pump circuit: short

circuit, high resistance

For DMTL pump tests, GO

to Pinpoint Test

G532445p4.

P240600

DMTL pump sense circuit

high

DMTL pump circuit: short

circuit, high resistance

For DMTL pump tests, GO

to Pinpoint Test

G532445p4.

P240B00

DMTL pump heater circuit

low

DMTL heater control

circuit: short circuit to
ground

DMTL heater control

circuit: high resistance

For DMTL heater circuit

tests. GO to Pinpoint Test

G532445p5.

P240C00

DMTL pump heater circuit

high

DMTL heater control

circuit: short circuit to
power

For DMTL heater circuit

tests. GO to Pinpoint Test

G532445p5.

P245000

COV performance/stuck

open

DMTL pump circuit: short

circuit, high resistance

DMTL COV stuck open

For DMTL pump tests, GO

to Pinpoint Test

G532445p4.

For DMTL COV tests, GO to

Pinpoint Test G532445p3.

If the circuits are good,

replace the DMTL

assembly.

P245100

COV performance/stuck

closed

DMTL pump circuit: short

circuit, high resistance

DMTL COV stuck closed

For DMTL pump tests, GO

to Pinpoint Test

G532445p4.

For DMTL COV tests, GO to

Pinpoint Test G532445p3.

If the circuits are good,

replace the DMTL

assembly.

Pinpoint Tests

CAUTION: When probing connectors to take measurements in the course of the pinpoint

tests, use the adaptor kit, part number 3548-1358-00.

NOTE:

When performing electrical voltage or resistance tests, always use a digital multimeter (DMM)

accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing

resistance, always take the resistance of the DMM leads into account.

NOTE:

Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

PINPOINT TEST G532445p1 :
EVAPORATIVE SYSTEM INCORRECT
PURGE FLOW

G532445t1 : CHECK FUEL FILLER CAP FITMENT AND CONDITION OF
CANISTER, PIPES AND CONNECTORS

1. Make sure that the fuel filler cap is correctly installed and tightened. 2. Check the condition of the

carbon canister. 3. Check the condition of all accessible pipes and connectors in the vapor line.

Are the canister and all pipes and connectors in good condition?

-> Yes

GO to Pinpoint Test G532445t2.

-> No

REPAIR as necessary. CLEAR the DTC, test the system for normal operation.

G532445t2 : CHECK THAT THE PURGE VALVE IS OPERATING

1. Disconnect the vapor pipe from the inlet port of the evaporative purge valve. 2. RUN the engine

for 2 minutes, making sure that the engine reaches normal operating temperature. 3. 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?

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-> Yes

CHECK for related DTCs. Refer to the index above.

-> No

CHECK the purge valve circuits. GO to Pinpoint Test G532445p2.

PINPOINT TEST G532445p3 : CHANGE-
OVER VALVE (COV) CONTROL
CIRCUIT

G532445t8 : CHECK THE COV CONTROL CIRCUIT FOR SHORT CIRCUIT TO
GROUND

1. Key off. 2. Disconnect the DMTL electrical connector, CV09. 3. Measure the resistance between:

DMTL connector CV09, harness side

Battery

Pin 03

Negative terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear the DTC, test

the system for normal operation.

-> No

GO to Pinpoint Test G532445t9.

G532445t9 : CHECK THE COV CONTROL CIRCUIT FOR SHORT CIRCUIT TO
POWER

1. Measure the resistance between:

DMTL connector CV09, harness side

Battery

Pin 03

Positive terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear the DTC, test

the system for normal operation.

-> No

GO to Pinpoint Test G532445t10.

G532445t10 : CHECK THE COV CONTROL CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the ECM electrical connector, EC300. 2. Measure the resistance between:

DMTL connector CV09, harness side ECM connector EC300, harness side

Pin 03

Pin 48

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. Clear the

DTC, test the system for normal operation.

-> No

INSTALL a new DMTL assembly. If the DTC is repeated, refer to the warranty policy and procedures

manual if an ECM is suspect.

PINPOINT TEST G532445p2 : PURGE
VALVE CONTROL CIRCUIT

G532445t3 : CHECK THE POWER SUPPLY TO THE PURGE VALVE

1. Disconnect the purge valve connector, PI363. 2. Key on, engine off. 3. Measure the voltage

between:

Purge valve connector PI363, harness side

Battery

Pin 01

Negative terminal

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between the purge valve and battery. This circuit includes harness splices and fuse

14 of the front power distribution box. For additional information, refer to the wiring diagrams. Clear

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