Jaguar XJ (X350). Manual — part 821

P011300

Intake air temperature

(IAT) 1 sensor circuit

IAT1 sensor circuit: high

input

For IAT1 sensor tests,

Electronic Engine Controls

P011400

Intake air temperature

(IAT) 1 sensor circuit

IAT1 sensor circuit:

intermittent/erratic

For IAT1 sensor tests,

Electronic Engine Controls

P200800

Port de-activation solenoid

circuit

Port de-activation

solenoid circuit: high
resistance

For port de-activation solenoid

circuit tests, GO to Pinpoint

Test G552277p2.

P200900

Port de-activation solenoid

circuit

Port de-activation

solenoid circuit:
short circuit to
ground

For port de-activation solenoid

circuit tests, GO to Pinpoint

Test G552277p2.

P201000

Port de-activation solenoid

circuit

Port de-activation

solenoid circuit:
short circuit to
battery

For port de-activation solenoid

circuit tests, GO to Pinpoint

Test G552277p2.

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. Failure to follow this instruction may result

in damage to the vehicle.

NOTE:

When performing 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.

NOTE:

If DTCs are recorded and a fault is not present when performing the pinpoint tests, an

intermittent concern may be the cause. Always check for loose connections and corroded

terminals.

PINPOINT TEST G552277p1 : CHECK
THE OPERATION OF THE PORT DE-
ACTIVATION CAMSHAFT COVER
CONTROL VALVE(S)

G552277t1 : CHECK THE VACUUM LINES TO THE CONTROL VALVES

1. Check the vacuum lines for connection, security and condition.

Are the vacuum lines connected, secure and in good condition?

-> Yes

GO to Pinpoint Test G552277t2.

-> No

RECTIFY or replace as necessary. Test the system for normal operation.

G552277t2 : CHECK THE FUNCTION OF THE CONTROL VALVES

1. Disconnect the vacuum line to the suspect control valve actuator. 2. Connect a suitable hand

vacuum pump to the control valve actuator. 3. Apply a vacuum to the actuator. 4. Observe the

actuator linkage operation.

Does the actuator linkage operate?

-> Yes

CHECK for DTCs indicating an intake air shutoff throttle fault.

-> No

INSTALL a new camshaft cover. Test the system for normal operation.

PINPOINT TEST G552277p2 : PORT DE-
ACTIVATION SOLENOID AND CIRCUIT

G552277t3 : CHECK FOR POWER TO THE PORT DE-ACTIVATION SOLENOID

1. Port de-activation solenoid connector, C36

Circuit

Pin

Power

01

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Signal from ECM 02

2. Engine control module (ECM) connector, C100

Circuit

Pin

Port de-activation solenoid - signal K4

3. Key off. 4. Disconnect the port de-activation solenoid connector, C36. 5. Key on, engine off. 6.

Measure the voltage between:

C36, harness side

Battery

Pin 01

Negative terminal

Is the voltage between 9 and 15 volts?

-> Yes

GO to Pinpoint Test G552277t4.

-> No

REPAIR the power circuit. For additional information, refer to the wiring diagrams. Clear any DTCs,

test the system for normal operation.

G552277t4 : CHECK THE PORT DE-ACTIVATION SOLENOID SIGNAL CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

C36, harness side

Battery

Pin 02

Negative terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G552277t5.

-> No

GO to Pinpoint Test G552277t8.

G552277t5 : CHECK THE PORT DE-ACTIVATION SOLENOID SIGNAL CIRCUIT
FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

C36, harness side

Battery

Pin 02

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G552277t6.

-> No

GO to Pinpoint Test G552277t9.

G552277t6 : CHECK THE PORT DE-ACTIVATION SOLENOID SIGNAL CIRCUIT
FOR HIGH RESISTANCE

1. Key off. 2. Disconnect the ECM connector, C100. 3. Measure the resistance between:

C36, harness side C100, harness side

Pin 02

Pin K4

Is the resistance less than 10 ohms?

-> Yes

GO to Pinpoint Test G552277t7.

-> No

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

test the system for normal operation.

G552277t7 : CHECK THE COMPONENT RESISTANCE

1. Measure the resistance between:

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