Jaguar XJ (X350). Manual — part 1234

GO to Pinpoint Test G426404t17.

G426404t17 : CHECK THE LH AIR MIX SERVO FOR SHORT TO B+

1. Reconnect the LH air mix servo connector RA7. 2. Measure the voltage between the rear climate

control module connector RA1, pin 11 and GROUND.

•

Is the voltage greater than 3 volts?

-> Yes

INSTALL a new LH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G426404t18.

G426404t18 : CHECK THE RH AIR MIX SERVO FOR SHORT TO B+

1. Reconnect the RH air mix servo connector RA8. 2. Measure the voltage between the rear climate

control module connector RA1, pin 11 and GROUND.

•

Is the voltage greater than 3 volts?

-> Yes

INSTALL a new RH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G426404t19.

G426404t19 : CHECK THE SERVO'S FOR SHORT TO GROUND

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Measure the resistance between the rear climate control module

connector RA1, pin 11 and GROUND.

•

Is the resistance less than 10,000 ohms?

-> Yes

GO to Pinpoint Test G426404t20.

-> No

INSTALL a new rear climate control module. CLEAR the DTC. TEST the system for normal operation.

G426404t20 : CHECK THE MODE SERVO FOR SHORT TO GROUND

1. Disconnect the mode servo connector RA09. 2. Measure the resistance between the rear climate

control module connector RA1, pin 11 and GROUND.

•

Is the resistance less than 10,000 ohms?

-> Yes

GO to Pinpoint Test G426404t21.

-> No

INSTALL a new mode servo. CLEAR the DTC. TEST the system for normal operation.

G426404t21 : CHECK THE LH AIR MIX SERVO FOR SHORT TO GROUND

1. Disconnect the LH air mix connector RA7. 2. Measure the resistance between the rear climate

control module connector RA1, pin 11 and GROUND.

•

Is the resistance less than 10,000 ohms?

-> Yes

INSTALL a new LH air mix servo. CLEAR the DTC. TEST the system for normal operation.

-> No

INSTALL a new RH air mix servo. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G426404p6 : DTC
B2513: BLOWER MOTOR CONTROL
MODULE CIRCUIT TEST

G426404t22 : CHECK THE REAR BLOWER MOTOR CONTROL MODULE
CIRCUIT FOR OPEN CIRCUIT

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the rear climate control module connector RA1. 3.

Disconnect the rear blower motor control module connector RA3. 4. Measure the resistance

between the rear climate control module connector RA1, pin 14 and the rear blower motor control

module connector RA3, pin 02.

•

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 rear blower motor control module. CLEAR the DTC. TEST the system for normal

operation. If the DTC is repeated, INSTALL a new rear climate control module.

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PINPOINT TEST G426404p7 : DTC
B2514: BLOWER MOTOR CONTROL
MODULE CIRCUIT TEST

G426404t23 : CHECK THE REAR BLOWER MOTOR CONTROL MODULE
CIRCUIT FOR SHORT TO B+

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the rear climate control module connector RA1. 3.

Disconnect the rear blower motor control module connector RA3. 4. Reconnect the battery negative

terminal.

Battery Connect (86.15.15) 5. Turn the ignition switch to the ON position. 6. Measure the voltage

between the rear climate control module connector RA1, pin 14 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 rear blower motor control module. CLEAR the DTC. TEST the system for normal

operation. If the DTC is repeated, INSTALL a new rear climate control module.

PINPOINT TEST G426404p8 : DTC
B2844: REAR CLIMATE CONTROL
MODULE IGNITION FEED CIRCUIT
TESTS

G426404t25 : CHECK THE REAR CLIMATE CONTROL MODULE IGNITION
FEED CIRCUIT FOR VOLTAGE

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Disconnect the rear climate control module connector RA2. 3.

Reconnect the battery negative terminal.

Battery Connect (86.15.15) 4. Turn the ignition switch to the ON position. 5. Measure the voltage

between the rear climate control module connector RA2, pin 07 and GROUND.

•

Is the voltage less than 10 volts?

-> Yes

GO to Pinpoint Test G426404t24.

-> No

CHECK the ground to the rear climate control module. If a ground is present, INSTALL a new rear

climate control module. CLEAR the DTC. TEST the system for normal operation.

G426404t24 : CHECK REAR PASSENGER DISTRIBUTION BOX FUSE F53

1. Turn the ignition switch to the OFF position. 2. Remove the rear passenger distribution box fuse

F53. 3. Inspect fuse F53 for open circuit.

•

Is the fuse OK?

-> Yes

GO to Pinpoint Test G426404t26.

-> No

GO to Pinpoint Test G426404t27.

G426404t26 : CHECK THE REAR CLIMATE CONTROL MODULE IGNITION
FEED CIRCUIT FOR OPEN CIRCUIT

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Measure the resistance between the rear climate control module

connector RA2, pin 07 and rear passenger distribution box fuse F53.

•

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

REPAIR the high resistance circuit between the rear passenger distribution box fuse F53 and battery

positive. This circuit includes the rear ignition relay R2. For additional information, refer to the wiring

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

G426404t27 : CHECK THE REAR CLIMATE CONTROL MODULE IGNITION
FEED CIRCUIT FOR SHORT TO GROUND

1. Disconnect the battery negative terminal.

Battery Disconnect and Connect 2. Measure the resistance between the rear climate control module

connector RA2, pin 07 and GROUND.

•

Is the resistance less than 10,000 ohms?

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