Jaguar XJ (X350). Manual — part 1274

-> Yes

GO to Pinpoint Test G215852t9.

-> No

CHECK the circuit between the ECM and the generator for open circuit/high resistance. REPAIR as

necessary. CLEAR the DTC, test the system for normal operation. If the fault persists, contact dealer

technical support for advice on possible ECM failure.

G215852t9 : CHECK THE "L" LINE FOR SHORT TO BATTERY

1. Turn the ignition switch to the OFF position. For vehicles with V6 engine

•

Measure the voltage between PI47, pin 04 (YR) and GROUND.

For vehicles with V8 engine

•

Measure the voltage between PI47, pin 01 (YR) and GROUND.

•

Is the voltage less than 1 volt?

-> Yes

GO to Pinpoint Test G215852t21.

-> No

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

the system for normal operation.

G215852t21 : CHECK THE GENERATOR DRIVE PULLEY

1. Remove the accessory drive belt, <<303-05>> 2. Rotate the generator pulley by hand.

•

Does the generator rotor shaft rotate with the pulley?

-> Yes

INSTALL a new generator. CLEAR the DTC, test the system for normal operation. If the fault is

repeated, contact dealer technical support for advice on possible ECM failure.

-> No

INSTALL a new generator. CLEAR the DTC, test the system for normal operation.

G215852t7 : CHECK THE VOLTAGE AT THE GENERATOR SENSE TERMINAL
(VEHICLES WITH V8 ENGINE ONLY)

1. Disconnect the generator electrical connector, PI48. 2. Measure the voltage between PI48, pin 03

(NG) and GROUND.

•

Is the voltage less than 10 volts?

-> 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 G215852t10.

G215852t10 : CHECK FUSE 30 IN THE REAR DISTRIBUTION BOX (VEHICLES
WITH V8 ENGINE ONLY)

1. Check the fuse condition.

•

Is the fuse blown?

-> Yes

GO to Pinpoint Test G215852t22.

-> No

REPAIR the circuit between the rear power distribution box and the generator, test the system for

normal operation.

G215852t22 : CHECK FUSE 30 IN THE REAR DISTRIBUTION BOX FOR A
SHORT TO GROUND (VEHICLES WITH V8 ENGINE ONLY)

1. Measure the resistance between the fuse box, terminal 01 and GROUND.

•

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. INSTALL a new fuse,

test the system for normal operation.

-> No

INSTALL a new fuse, test the system for normal operation.

PINPOINT TEST G215852p5 : P2503:
CHARGING SYSTEM VOLTAGE LOW

G215852t14 : CHECK FOR DTC AFTER FULL LOAD TEST

1. Clear all DTCs. 2. Start the engine and run at 1500 rpm with all electrical loads switched ON, except

the heated front screen.

•

Does P2503 reflag within five minutes?

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-> Yes

GO to Pinpoint Test G215852t15.

-> No

No charging system fault found.

G215852t15 : CHECK THE BATTERY TO GENERATOR CABLES FOR HIGH
RESISTANCE

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

Disconnect the battery positive terminal. 4. Disconnect the B+ terminal from the starter motor. 5.

Disconnect the B+ terminal from the generator. 6. Measure the resistance of both leads.

•

Is either resistance greater than 5 ohms?

-> Yes

INSTALL a new lead. CLEAR the DTC, test the system for normal operation.

-> No

GO to Pinpoint Test G215852t16.

G215852t16 : CHECK FOR DTC AFTER CLEANING CONNECTIONS

1. Clean all connections in the supply and GROUND circuits. 2. Clear all DTCs. 3. Start the engine and

run at 1500 rpm with all electrical loads switched ON, except the heated front screen.

•

Does P2503 reflag within five minutes?

-> Yes

INSTALL a new generator. CLEAR the DTC, test the system for normal operation. If the DTC is

repeated, contact dealer technical support for advice on possible ECM and/or power feeds failure.

-> No

Fault rectified.

PINPOINT TEST G215852p6 : P2504:
CHARGING SYSTEM VOLTAGE HIGH

G215852t17 : CHECK FOR DTC AFTER MINIMUM LOAD TEST

1. Clear all DTCs. 2. Start the engine and allow to idle with no additional electrical load. 3. Allow the

engine to idle for at least five minutes while checking for DTCs.

•

Does P2504 reflag within five minutes?

-> Yes

INSTALL a new generator. CLEAR the DTC, test the system for normal operation.

-> No

CHECK with owner/driver for any history of boost charging.

PINPOINT TEST G215852p8 :
GENERATOR NOISY

G215852t74 : CHECK THE GENERATOR FOR SECURITY

1. Inspect the generator fixings.

•

Is the generator secure?

-> Yes

GO to Pinpoint Test G215852t75.

-> No

SECURE the generator. TEST the system for normal operation.

G215852t75 : CHECK THE ACCESSORY DRIVE BELT

1. Remove and inspect the accessory drive belt. For additional information <<303-05>>

•

Is the accessory drive belt in good condition?

-> Yes

GO to Pinpoint Test G215852t76.

-> No

INSTALL a new accessory drive belt. TEST the system for normal operation.

G215852t76 : CHECK THE ACCESSORY DRIVE BELT TENSIONER

1. Remove and inspect the accessory drive belt tensioner. <<303-05>>

•

Is the accessory drive belt tensioner in good condition?

-> Yes

GO to Pinpoint Test G215852t77.

-> No

INSTALL a new accessory drive belt tensioner. TEST the system for normal operation.

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