Jaguar XJ (X350). Manual — part 922

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 G258127t167.

G258127t167 : CHECK IAT SENSOR 2 SENSING CIRCUIT FOR SHORT TO HIGH
VOLTAGE

1. Reconnect the battery negative terminal. 2. Turn the ignition switch to the ON position. 3.

Measure the voltage between PI43, pin 01 (YU) and GROUND.

Is the voltage greater than 3 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 G258127t168.

G258127t168 : CHECK IAT SENSOR 2 SENSING CIRCUIT FOR SHORT TO
GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between PI43, pin 01 (YU)

and GROUND.

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit to GROUND. For additional information, refer to the wiring diagrams. CLEAR

the DTC. TEST the system for normal operation.

-> No

INSTALL a new IATS 2.

CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G258127p38 : P1410;
AIR CLEANER SOLENOID VALVE
DRIVE CIRCUIT MALFUNCTION

G258127t169 : CHECK THE POWER SUPPLY TO THE AIR CLEANER
SOLENOID VALVE

1. Disconnect the air cleaner solenoid valve electrical connector, EC37. 2. Turn the ignition switch to

the ON position. 3. Measure the voltage between EC37, pin 01 (GU) and GROUND.

Is the voltage greater than 10 volts?

-> Yes

GO to Pinpoint Test G258127t170.

-> No

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

power distribution box (fuse 14), the EMS relay, and the high power protection module. For

additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal

operation.

G258127t170 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR HIGH RESISTANCE

1. Turn the ignition switch to the OFF position. 2. Disconnect the battery negative terminal. 3.

Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between EC37, pin 02 (U)

and PI01, pin 14 (U).

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 G258127t171.

G258127t171 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR SHORT TO HIGH VOLTAGE

1. Reconnect the battery negative terminal. 2. Turn the ignition switch to the ON position. 3.

Measure the voltage between EC37, pin 02 (U) and GROUND.

Is the voltage greater than 3 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

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GO to Pinpoint Test G258127t172.

G258127t172 : CHECK THE AIR CLEANER SOLENOID VALVE TO ECM CIRCUIT
FOR SHORT TO GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between EC37, pin 02 (U)

and GROUND.

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit to GROUND. 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 G258127p39 : DTC
P1474; CHECK INTERCOOLER
COOLANT PUMP FUNCTION

G258127t173 : CHECK POWER SUPPLY TO INTERCOOLER COOLANT PUMP

1. Disconnect the intercooler coolant pump electrical connector, CP02. 2. Turn the ignition switch to

the ON position. 3. Make sure the EMS relay is energized. 4. Measure the voltage between CP02, pin

02 (NG) and GROUND.

Is the voltage less than 10 volts?

-> Yes

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

distribution box (fuse 31), the ignition relay, and the high power protection module. For additional

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

-> No

GO to Pinpoint Test G258127t174.

G258127t174 : CHECK THE INTERCOOLER COOLANT PUMP GROUND

1. Measure the resistance between CP02, pin 01 (B) and GROUND.

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

INSTALL a new intercooler coolant pump.

Water Pump CLEAR the DTC. TEST the system for normal operation.

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