Jaguar XJ (X350). Manual — part 938

MAF connector PI14, harness side

Battery

Pin 04

Negative terminal

Is the voltage greater than 3 volts?

-> 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 G531332t7.

G531332t7 : CHECK THE IAT SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT
TO GROUND

1. Key off. 2. Measure the resistance between:

MAF connector PI14, harness side

Battery

Pin 04

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

INSTALL a new MAF sensor.

Mass Air Flow (MAF) Sensor (18.30.15) CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G531332p3 : ENGINE
COOLANT TEMPERATURE (ECT)
SENSOR CIRCUIT
RANGE/PERFORMANCE, HIGH/LOW
VOLTAGE

G531332t8 : CHECK THE ECT SENSOR SENSING CIRCUIT FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Disconnect the ECT sensor electrical

connector, PI25. 4. Measure the resistance between:

ECM connector PI300, harness side ECT sensor connector PI25, harness side

Pin 68

Pin 02

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

GO to Pinpoint Test G531332t9.

G531332t9 : CHECK THE ECT SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT
TO POWER

1. Key on, engine off. 2. Measure the voltage between:

ECT sensor connector PI25, harness side

Battery

Pin 02

Negative terminal

Is the voltage greater than 3 volts?

-> 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 G531332t10.

G531332t10 : CHECK THE ECT SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between:

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ECT sensor connector PI25, harness side

Battery

Pin 02

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

INSTALL a new ECT sensor.

Engine Coolant Temperature (ECT) Sensor - 4.2L SC V8 - AJV8 (18.30.10)

Engine Coolant Temperature (ECT) Sensor - 4.2L NA V8 - AJV8 (18.30.10) CLEAR the DTC. TEST the

system for normal operation.

PINPOINT TEST G531332p4 :
THROTTLE POSITION (TP) SENSOR
RANGE/PERFORMANCE, HIGH/LOW
VOLTAGE

G531332t11 : CHECK THE TP SENSOR SENSING CIRCUIT TP1 FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Disconnect the TP sensor electrical

connector, PI26. 4. Measure the resistance between:

ECM connector PI300, harness side TP sensor connector PI26, harness side

Pin 65

Pin 06

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

GO to Pinpoint Test G531332t12.

G531332t12 : CHECK THE TP SENSOR SENSING CIRCUIT TP1 FOR SHORT
CIRCUIT TO POWER

1. Key on, engine off. 2. Measure the voltage between:

TP sensor connector PI26, harness side

Battery

Pin 06

Negative terminal

Is the voltage greater than 5 volts?

-> Yes

REPAIR the short circuit to high voltage. For additional information, refer to the wiring diagrams.

CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t13.

G531332t13 : CHECK THE TP SENSOR SENSING CIRCUIT TP1 FOR SHORT
CIRCUIT TO GROUND

1. Key off. 2. Measure the resistance between:

TP sensor connector PI26, harness side

Battery

Pin 06

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

INSTALL a new TP sensor.

Throttle Body - 4.2L SC V8 - AJV8, VIN Range: G45704->G99999 (19.70.04)

Throttle Body - 4.2L NA V8 - AJV8/3.5L NA V8 - AJV8, VIN Range: G45704->G99999 (19.70.04) CLEAR

the DTC. TEST the system for normal operation.

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