Jaguar XJ (X350). Manual — part 1344

G239843t18 : CHECK THE CAN + CIRCUIT BETWEEN THE AIR
CONDITIONING MODULE (A/CCM) AND THE ABS CONTROL MODULE
(ABSCM) FOR CONTINUITY

1. Disconnect the ABSCM electrical connector, EC30. 2. Measure the resistance between CR119, pin

06 (Y) and EC30, pin 11 (Y).

•

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 G239843t19.

G239843t19 : CHECK THE CAN - CIRCUIT BETWEEN THE AIR CONDITIONING
MODULE (A/CCM) AND THE ABS CONTROL MODULE (ABSCM) FOR
CONTINUITY

1. Measure the resistance between CR119, pin 07 (G) and EC30, pin 15 (G).

•

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 G239843t20.

G239843t20 : CHECK THE CAN + CIRCUIT BETWEEN THE ABS CONTROL
MODULE (ABSCM) AND THE ENGINE CONTROL MODULE (ECM) FOR
CONTINUITY

1. Disconnect the ECM electrical connector, PI01. 2. Measure the resistance between EC30, pin 12 (Y)

and PI01, pin 124 (Y).

•

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 G239843t21.

G239843t21 : CHECK THE CAN - CIRCUIT BETWEEN THE ABS CONTROL
MODULE (ABSCM) AND THE ENGINE CONTROL MODULE (ECM) FOR
CONTINUITY

1. Measure the resistance between EC30, pin 14 (G) and PI01, pin 123 (G).

•

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 resistance in test A1. Check for DTCs indicating a module fault. Carry out the pinpoint

test for the module indicated.

PINPOINT TEST G239843p2 : CHECK
THE CONTROLLER AREA NETWORK
FOR SHORT CIRCUIT

G239843t22 : CHECK THE CAN + FOR SHORT CIRCUIT TO B +

1. Measure the resistance between pins 06 (Y) and 16 (NW) of the DLC.

•

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 G239843t23.

G239843t23 : CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION
SWITCHED +

1. Turn the ignition switch to the ON position. 2. Measure the resistance between pins 06 (Y) and 09

(GO) of the DLC.

•

Is the resistance less than 10,000 ohms?

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-> 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 G239843t24.

G239843t24 : CHECK THE CAN + FOR SHORT CIRCUIT TO GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between pins 06 (Y) and 04

(B) of the DLC. 3. Measure the resistance between pins 06 (Y) and 05 (BK) of the DLC.

•

Is either 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 G239843t25.

G239843t25 : CHECK THE CAN - FOR SHORT CIRCUIT TO B +

1. Measure the resistance between pins 14 (G) and 16 (NW) of the DLC.

•

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 G239843t26.

G239843t26 : CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION
SWITCHED +

1. Turn the ignition switch to the ON position. 2. Measure the resistance between pins 14 (G) and 09

(GO) of the DLC.

•

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 G239843t27.

G239843t27 : CHECK THE CAN - FOR SHORT CIRCUIT TO GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between pins 14 (G) and 04

(B) of the DLC. 3. Measure the resistance between pins 14 (G) and 05 (BK) of the DLC.

•

Is either 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

No short circuit fault found in controller area network. Check for DTCs indicating a module fault.

Carry out the pinpoint test for the module indicated.

PINPOINT TEST G239843p3 : CHECK
THE SCP NETWORK

G239843t28 : CHECK FOR CORRECT BUS TERMINATION IN THE SCP +
NETWORK

1. Measure the resistance between pins 02 (Y) and 05 (BK) of the DLC.

•

Is the resistance 120 ohms?

-> Yes

Network resistance is correct. Check for DTCs indicating a module or circuit fault. REFER to the DTC

index.

-> No

GO to Pinpoint Test G239843t29.

G239843t29 : CHECK THE SCP + FOR SHORT CIRCUIT TO BATTERY

1. Measure the voltage across pins 02 (Y) and 16 (NW) of the DLC.

•

Is the voltage greater than 3 volts?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Test the system for

normal operation.

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