Jaguar XJ (X350). Manual — part 1175

PINPOINT TEST G240073p3 : DTC
B2373: FORWARD ALERT SWITCH LED
CIRCUIT TESTS

G240073t3 : CHECK THE FORWARD ALERT SWITCH LED CIRCUIT FOR OPEN
CIRCUIT

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the ACC module connector IP78. 3. Disconnect the

forward alert switch connector IP50. 4. Measure the resistance between the ACC module connector

IP78, pin 05 (U) and forward alert switch connector IP50, pin 07 (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 G240073t9.

G240073t9 : CHECK THE FORWARD ALERT SWITCH LED CIRCUIT FOR
SHORT CIRCUIT TO B+

1. Reconnect the battery negative terminal.

Battery Connect (86.15.15) 2. Turn the ignition switch to the ON position. 3. Measure the voltage

between the ACC module connector IP78, pin 05 (U) and GROUND.

Is the voltage greater than 3 volts?

-> Yes

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

the system for normal operation.

-> No

INSTALL a new forward alert switch.

Speed Control Deactivator Switch (19.75.20) CLEAR the DTC. TEST the system for normal operation.

If the DTC is repeated, INSTALL a new ACC control module, not the forward looking sensor.

PINPOINT TEST G240073p4 : DTC
C1920: FORWARD ALERT SWITCH LED
CIRCUIT TESTS

G240073t4 : CHECK THE FORWARD ALERT SWITCH LED CIRCUIT FOR
SHORT CIRCUIT TO GROUND

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the ACC module connector IP78. 3. Disconnect the

forward alert switch connector IP50. 4. Measure the resistance between the ACC module connector,

pin 05 (U) 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 forward alert switch.

Speed Control Deactivator Switch (19.75.20) CLEAR the DTC. TEST the system for normal operation.

If the DTC is repeated, INSTALL a new ACC control module, not the forward looking sensor.

PINPOINT TEST G240073p5 : DTC
C1935: CHIME CIRCUIT TESTS

G240073t5 : CHECK THE CHIME CIRCUIT FOR OPEN CIRCUIT

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the ACC module connector IP78. 3. Disconnect the

chime module connector IP11. 4. Measure the resistance between the ACC module connector IP78,

pin 06 (R) and chime module connector IP11, pin 03 (R).

Is the resistance greater than 5 ohms?

-> Yes

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

TEST the system for normal operation.

-> No

GO to Pinpoint Test G240073t10.

G240073t10 : CHECK THE CHIME CIRCUIT FOR SHORT CIRCUIT TO B+

1. Reconnect the battery negative terminal.

Battery Connect (86.15.15) 2. Connect the battery ground terminal. 3. Turn the ignition switch to the

ON position. 4. Measure the voltage between the ACC module connector IP78, pin 06 (R) and

GROUND.

Is the voltage greater than 3 volts?

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-> Yes

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

the system for normal operation.

-> No

INSTALL a new chime module. CLEAR the DTC. TEST the system for normal operation, If the DTC is

repeated, INSTALL a new ACC module.

PINPOINT TEST G240073p6 : DTC
B2369: CHIME CIRCUIT TEST

G240073t6 : CHECK THE CHIME CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the ACC module connector IP78. 3. Disconnect the

chime module connector IP11. 4. Measure the resistance between the ACC module connector IP78,

pin 06 (R) 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 chime module. CLEAR the DTC. TEST the system for normal operation. If the DTC is

repeated, INSTALL a new ACC module.

PINPOINT TEST G240073p7 : DTC
U0235, P2583: FLR SENSOR CAN
CIRCUIT TESTS

G240073t7 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT FOR
OPEN CIRCUIT

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the ACC module connector IP78. 3. Disconnect the

FLR sensor connector EC23. 4. Measure the resistance between the ACC module connector IP78, pin

02 (U) and FLR sensor connector EC23, pin 03 (U).

Is the resistance greater than 5 ohms?

-> Yes

CHECK connector IP55 for security. REPAIR the open circuit. For additional information, refer to the

wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G240073t11.

G240073t11 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT
FOR SHORT CIRCUIT TO B+

1. Reconnect the battery negative terminal.

Battery Connect (86.15.15) 2. Turn the ignition switch to the ON position. 3. Measure the voltage

between the ACC module connector IP78, pin 02 (U) and GROUND.

Is the voltage greater than 3 volts?

-> Yes

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

the system for normal operation.

-> No

GO to Pinpoint Test G240073t12.

G240073t12 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between the ACC module connector IP78, pin 02 (U) 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

GO to Pinpoint Test G240073t13.

G240073t13 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'H' CIRCUIT
FOR OPEN CIRCUIT

1. Measure the resistance between the ACC module connector IP78, pin 03 (R) and FLR sensor

connector EC23, pin 04 (R).

Is the resistance greater than 5 ohms?

-> Yes

CHECK connector IP55 for security. REPAIR the open circuit. For additional information, refer to the

wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

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