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Home >> Jaguar >> 2008 >> XJ (X350) V8-4.2L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Diagnosis By Symptom >> Pinpoint Tests >> Electronic Engine Controls >> VIN Range: G00442->G45703 >> PINPOINT TEST G258127p38

PINPOINT TEST G258127p38



Pinpoint Tests

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

->NO
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. 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.
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