Jaguar XJ (X350). Manual — part 211

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - EPB module - EPB module connector, CR50

-> No

INSTALL a new EPB switch.

Parking Brake Switch (70.35.46)

PINPOINT TEST G531320p9 : PRIMARY
APPLY SWITCH CIRCUIT OUT OF
RANGE

G531320t43 : CHECK THE PRIMARY APPLY SWITCH CIRCUIT RESISTANCE

1. Key off. 2.

Electric parking brake module connector 1 (CR50) disconnected. 3.

Electric parking brake module connector 2 (CR32) disconnected. 4. Key on, engine off. 5. Measure the

resistance between:

CR50 connector, harness side

CR32 connector, harness side

Electric parking brake switch apply 1 - signal - Pin

10

Electric parking brake switch - switch return - Pin

06

•

Is the resistance between 595 ohms - 611 ohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - EPB module - EPB module connector, CR50

-> No

INSTALL a new EPB switch.

Parking Brake Switch (70.35.46)

PINPOINT TEST G531320p10 :
PRIMARY APPLY SWITCH CIRCUIT
SHORT CIRCUIT TO GROUND

G531320t44 : CHECK THE PRIMARY APPLY SIGNAL CIRCUIT FOR SHORT
CIRCUIT TO GROUND

1. Key off. 2.

Electric parking brake module connector 1 (CR50) disconnected. 3. Key on, engine off. 4. Measure the

resistance between:

CR50 connector, harness side

Vehicle battery

Electric parking brake switch apply 1 - signal - Pin 10 Negative terminal

•

Is the resistance greater than 100 Kohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - EPB module - EPB module connector, CR50

-> No

GO to Pinpoint Test

G531320t45

.

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G531320t45 : CHECK IF THE SHORT CIRCUIT IS IN THE HARNESS OR THE
SWITCH

1.

Electric parking brake switch (TL82) connector disconnected. 2. Measure the resistance between:

CR50 connector, harness side

Vehicle battery

Electric parking brake switch apply 1 - signal - Pin 10 Negative terminal

•

Is the resistance greater than 100 Kohms?

-> Yes

INSTALL a new EPB switch.

Parking Brake Switch (70.35.46)

-> No

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

PINPOINT TEST G531320p11 : HIGH
POWER BATTERY FEED CIRCUIT
SHORT CIRCUIT TO GROUND OR
OPEN CIRCUIT

G531320t46 : CHECK THE HIGH POWER SUPPLY CIRCUIT

1.

Electric parking brake module connector 2 (CR32) disconnected. 2. Measure the voltage between:

CR32 connector, harness side

Vehicle battery

Electric parking brake module - battery supply - Pin 01 Negative terminal

•

Is the voltage between 9 volts - 15 volts?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - EPB module

-> No

No supply to the EPB circuit. check and repair the circuit as necessary. For additional information,

refer to the wiring diagrams.

PINPOINT TEST G531320p12 :
PRIMARY RELEASE SWITCH CIRCUIT
SHORT CIRCUIT TO GROUND

G531320t47 : CHECK THE PRIMARY RELEASE SIGNAL CIRCUIT FOR SHORT
TO GROUND

1. Key off. 2.

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