Jaguar XJ (X350). Manual — part 114

G256924t12 : CHECK THE VENT SOLENOID SUPPLY CIRCUIT FOR SHORT TO
GROUND

1. Reconnect the battery negative terminal. 2. Measure the resistance between CR91, pin 10 (YU)

and GROUND.

•

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

GO to Pinpoint Test

G256924t13

.

G256924t13 : CHECK THE VENT SOLENOID SUPPLY CIRCUIT FOR SHORT TO
B+

1. Measure the voltage between CR91, pin 10 (YU) and GROUND.

•

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

G256924t14

.

G256924t14 : CHECK THE VENT SOLENOID SIGNAL CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between CR91, pin 11 (U) and EC62, pin 01 (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

G256924t15

.

G256924t15 : CHECK THE VENT SOLENOID SIGNAL CIRCUIT FOR SHORT TO
GROUND

1. Measure the resistance between CR91, pin 11 (U) and GROUND.

•

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

GO to Pinpoint Test

G256924t16

.

G256924t16 : CHECK THE VENT SOLENOID SIGNAL CIRCUIT FOR SHORT TO
B+

1. Measure the voltage between CR91, pin 11 (U) and GROUND.

•

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

INSTALL a new compressor,

Air Suspension Compressor

PINPOINT TEST G256924p9 : C1416,
C1417, C1419; RIGHT-HAND FRONT AIR
SPRING DRIVE CIRCUIT
MALFUNCTION

G256924t17 : CHECK THE RIGHT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR SHORT TO B+

1. Disconnect the right-hand front air spring electrical connector, EC12. 2. Measure the voltage

between EC12, pin 02 (BG) and GROUND.

•

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

G256924t18

.

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G256924t18 : CHECK THE RIGHT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR SHORT TO GROUND

1. Measure the resistance between EC12, pin 02 (BG) and GROUND.

•

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

GO to Pinpoint Test

G256924t19

.

G256924t19 : CHECK THE RIGHT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ASU electrical connector, CR89. 3.

Measure the resistance between EC12, pin 02 (BG) and CR89, pin 10 (BG).

•

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 air spring solenoid, CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G256924p10 : C1421,
C1422, C1424; LEFT-HAND FRONT AIR
SPRING DRIVE CIRCUIT
MALFUNCTION

G256924t20 : CHECK THE LEFT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR SHORT TO B+

1. Disconnect the left-hand front air spring electrical connector, EC47. 2. Measure the voltage

between EC47, pin 02 (BO) and GROUND.

•

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

G256924t21

.

G256924t21 : CHECK THE LEFT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR SHORT TO GROUND

1. Measure the resistance between EC47, pin 02 (BO) and GROUND.

•

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

GO to Pinpoint Test

G256924t22

.

G256924t22 : CHECK THE LEFT-HAND FRONT AIR SPRING DRIVE CIRCUIT
FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ASU electrical connector, CR89. 3.

Measure the resistance between EC47, pin 02 (BO) and CR89, pin 01 (BO).

•

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 air spring solenoid, CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G256924p11 : C1425,
C1426, C1427; RIGHT-HAND REAR AIR
SPRING DRIVE CIRCUIT
MALFUNCTION

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