Jaguar XJ (X350). Manual — part 920

-> No

GO to Pinpoint Test G258127t147.

G258127t147 : CHECK VCT SOLENOID GROUND

1. Disconnect the battery negative terminal. 2. Measure the resistance between PI17, pin 02 (B) and

GROUND.

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

INSTALL a new VCT solenoid.

CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G258127p31 : DTC
P1582; "FLIGHT RECORDER" DATA IS
STORED IF ANY ONE OF FIVE
CONDITIONS OCCUR

G258127t148 : CHECK THE INERTIA SWITCH TO ECM CIRCUIT FOR SHORT
CIRCUIT TO B+ VOLTAGE

1. Make sure the inertia switch is not tripped. 2. Disconnect the inertia switch electrical connector,

CR02. 3. Disconnect the ECM electrical connector, PI01. 4. Measure the voltage between PI01, pin 10

(GU) and GROUND.

Is the voltage greater than 3 volts?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

INSTALL a new inertia switch. CLEAR the DTC. CLEAR the flight recorder information. TEST the system

for normal operation.

PINPOINT TEST G258127p32 : DTC
P1606; EMS CONTROL RELAY
MALFUNCTION

G258127t149 : CHECK THE EMS RELAY PERMANENT B+ SUPPLY

1. Remove the EMS relay. 2. Measure the voltage between the relay base, pins 02 and 03 and

GROUND.

Are both voltages greater than 10 volts?

-> Yes

GO to Pinpoint Test G258127t151.

-> No

REPAIR the circuit between the relay base and battery. This circuit includes the high power

protection module. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the

system for normal operation.

G258127t150 : CHECK THE EMS RELAY TO ECM CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ECM electrical connector, PI01. 3.

Measure the resistance between the relay base, pin 05 and PI01, pins 23 (WR) and 24 (WR).

Is either 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 G258127t151.

G258127t151 : CHECK THE ECM TO EMS RELAY CONTROL CIRCUIT FOR
HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ECM electrical connector, PI01. 3.

Measure the resistance between the relay base, pin 01 and PI01, pin 40 (U).

Is the resistance greater than 5 ohms?

-> Yes

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

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DTC. TEST the system for normal operation.

-> No

INSTALL a new EMS relay. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G258127p33 : P0105,
P1107, P1108; MANIFOLD ABSOLUTE
PRESSURE (MAP) SENSOR SENSING
CIRCUIT MALFUNCTION, HIGH/LOW
VOLTAGE

G258127t152 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the MAP sensor electrical connector, PI29.

3. Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between PI29, pin 01

(BK) and PI01, pin 127 (BK).

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 G258127t153.

G258127t153 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR SHORT TO
HIGH VOLTAGE

1. Reconnect the battery negative terminal. 2. Measure the voltage between PI29, pin 01 (BK) and

GROUND.

Is the voltage greater than 3 volts?

-> Yes

REPAIR the short 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 G258127t154.

G258127t154 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR SHORT TO
GROUND

1. Measure the resistance between PI29, pin 01 (BK) and GROUND.

Is the resistance less than 10,000 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

INSTALL a new MAP sensor.

CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, contact dealer

technical support for advice on possible ECM failure.

PINPOINT TEST G258127p34 : DTC
P0181, P0182, P0183; ENGINE FUEL
TEMPERATURE (EFT) SENSOR
RANGE/PERFORMANCE, LOW/HIGH
VOLTAGE

G258127t155 : CHECK THE EFT SENSOR SENSING CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the EFT sensor electrical connector, IL09.

3. Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between IL09, pin 01

(WU) and PI01, pin 50 (WU).

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 G258127t156.

G258127t156 : CHECK THE EFT SENSOR 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 IL09, pin 01 (WU) and GROUND.

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