Jaguar XJ (X350). Manual — part 113

-> Yes

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

TEST the system for normal operation.

-> No

CONTACT dealer technical support for confirmation of possible control module failure, and/or raise

an EPQR.

PINPOINT TEST G256924p3 : B1671;
BATTERY VOLTAGE OUT OF RANGE

G256924t5 : CHECK THE POWER SUPPLY TO THE ASU

1. Disconnect the ASU electrical connector, CR88. 2. Measure the voltage between CR88, pin 01 (NW)

and GROUND.

•

Is the voltage approximately 10 volts?

-> Yes

RECHECK DTCs.

-> No

GO to Pinpoint Test

G256924t6

.

G256924t6 : CHECK THE ASU POWER SUPPLY CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Remove fuse 52 of the rear power distribution box. 3.

Measure the resistance between CR88, pin 01 (NW) and the output terminal of fuse 52.

•

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

RECHECK the voltage to the ASU. If the voltage is high, check the charging system,

Charging System - 2.7L Diesel

PINPOINT TEST G256924p4 : B2804,
C1800; RESERVOIR SOLENOID DRIVE
CIRCUIT FAULT

G256924t7 : CHECK THE SOLENOID DRIVE CIRCUIT FOR SHORT TO B+

1. Disconnect the ASU electrical connector, CR91. 2. Disconnect the valve block electrical connector,

CR22. 3. Measure the voltage between CR22, pin 05 (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

G256924t49

.

G256924t49 : CHECK THE SOLENOID DRIVE CIRCUIT FOR SHORT TO
GROUND

1. Measure the resistance between CR22, pin 05 (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

G256924t50

.

G256924t50 : CHECK THE SOLENOID DRIVE CIRCUIT FOR HIGH RESISTANCE

1. Measure the resistance between CR22, pin 05 (BO) and CR91, pin 08 (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 valve block.

Air Suspension Solenoid Valve Block

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PINPOINT TEST G256924p5 : B2807;
PRESSURE SENSOR SIGNAL CIRCUIT
FAULT

G256924t8 : CHECK THE PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO
B+

1. Disconnect the ASU electrical connector, CR88. 2. Disconnect the valve block electrical connector,

CR92. 3. Measure the voltage between CR92, pin 02 (G) 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 valve block.

Air Suspension Solenoid Valve Block

PINPOINT TEST G256924p6 : B2808;
PRESSURE SENSOR SUPPLY CIRCUIT
FAULT

G256924t9 : CHECK THE PRESSURE SENSOR SUPPLY CIRCUIT FOR SHORT
TO B+

1. Disconnect the ASU electrical connector, CR88. 2. Disconnect the valve block electrical connector,

CR92. 3. Measure the voltage between CR92, pin 03 (GY) 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 valve block.

Air Suspension Solenoid Valve Block

PINPOINT TEST G256924p7 : B2809;
PRESSURE SENSOR SUPPLY CIRCUIT
FAULT

G256924t10 : CHECK THE PRESSURE SENSOR SUPPLY CIRCUIT FOR SHORT
TO GROUND

1. Disconnect the ASU electrical connector, CR88. 2. Disconnect the valve block electrical connector,

CR92. 3. Measure the resistance between CR92, pin 03 (GY) 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

INSTALL a new valve block.

Air Suspension Solenoid Valve Block

PINPOINT TEST G256924p8 : B2810;
VENT SOLENOID CIRCUIT FAULT

G256924t11 : CHECK THE VENT SOLENOID SUPPLY CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ASU electrical connector, CR91. 3.

Disconnect the vent solenoid electrical connector, EC62. 4. Measure the resistance between CR91,

pin 10 (YU) and EC62, pin 02 (YU).

•

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

G256924t12

.

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