Jaguar XJ (X350). Manual — part 953

GO to Pinpoint Test G531332t167.

G531332t167 : CHECK THE MAPT SENSOR IAT2 SENSING CIRCUIT FOR
SHORT CIRCUIT TO POWER

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

MAPT sensor connector PI301, harness side

Battery

Pin 03

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 G531332t168.

G531332t168 : CHECK THE MAPT SENSOR IAT2 SENSING CIRCUIT FOR
SHORT CIRCUIT TO GROUND

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

MAPT sensor connector PI301, 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

INSTALL a new MAPT sensor. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G531332p38 : AIR
CLEANER SOLENOID VALVE DRIVE
CIRCUIT MALFUNCTION

G531332t169 : CHECK THE POWER SUPPLY TO THE AIR CLEANER
SOLENOID VALVE

1. Key off. 2. Disconnect the air cleaner solenoid valve electrical connector, EC37. 3. Key on, engine

off. 4. Make sure the EMS relay is engaged. 5. Measure the voltage between:

Air cleaner solenoid valve connector EC37, harness side

Battery

Pin 01

Negative terminal

Is the voltage greater than 10 volts?

-> Yes

GO to Pinpoint Test G531332t170.

-> No

REPAIR the circuit between the air cleaner solenoid valve and battery. This circuit includes splice

ECS20, fuse 14 of the front power distribution box and the EMS relay. For additional information,

refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

G531332t170 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR HIGH RESISTANCE

1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Measure the resistance between:

Air cleaner solenoid valve connector EC37, harness side ECM connector PI300, harness side

Pin 02

Pin 49

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

www.

GO to Pinpoint Test G531332t171.

G531332t171 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR SHORT CIRCUIT TO POWER

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

Air cleaner solenoid valve connector EC37, 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 G531332t172.

G531332t172 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR SHORT CIRCUIT TO GROUND

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

Air cleaner solenoid valve connector EC37, 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 air cleaner solenoid valve. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G531332p39 : CHECK
THE AUXILIARY COOLANT PUMP
FUNCTION

G531332t173 : CHECK THE POWER SUPPLY TO THE AUXILIARY COOLANT
PUMP

1. Key off. 2. Disconnect the auxiliary coolant pump electrical connector, CP02. 3. Key on, engine off.

4. Make sure the EMS relay is engaged. 5. Make sure the auxiliary coolant pump relay is engaged. 6.

Measure the voltage between:

Auxiliary coolant pump connector CP02, harness side

Battery

Pin 02

Negative terminal

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between CP02, pin 02 and battery. This circuit includes fuse 17 of the front power

distribution box, the auxiliary coolant pump relay and the EMS relay. For additional information,

refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t174.

G531332t174 : CHECK THE AUXILIARY COOLANT PUMP GROUND

1. Measure the resistance between:

Auxiliary coolant pump connector CP02, harness side

Battery

Pin 01

Negative terminal

Is the resistance greater than 5 ohms?

-> Yes

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

system for normal operation.

-> No

www.