Jaguar XJ (X350). Manual — part 1231

B2513

Blower (Fan)

Circuit Failure

•

Rear climate control
module to blower
motor control module
- circuit fault

Carry out any pinpoint tests associated

with this DTC using the manufacturer

approved diagnostic system. Refer to

electrical circuit diagrams and check rear

climate control module to blower motor

control module for circuit fault. For

blower motor control circuit test, GO to

Pinpoint Test G426404p6.

B2514

Blower (Fan)

Circuit Short to

Power

•

Rear climate control
module to blower
motor control module
circuit - short to
power

Carry out any pinpoint tests associated

with this DTC using the manufacturer

approved diagnostic system. Refer to

electrical circuit diagrams and check rear

climate control module to blower motor

control module for circuit short to power.

For blower motor control circuit test, GO

to Pinpoint Test G426404p7.

B2828

Rear Evaporator

Temp Sensor

Circuit Failure

•

Evaporator
temperature circuit -
open or short to
power

Refer to electrical circuit diagrams and

check evaporator temperature circuit for

open or short to power. For evaporator

temperature sensor circuit tests, GO to

Pinpoint Test G426404p4.

B2829

Rear Evaporator

Temp Sensor

Short to Ground

•

Evaporator
temperature circuit -
short to ground

Refer to electrical circuit diagrams and

check evaporator temperature circuit for

short to ground. For evaporator

temperature sensor circuit test, GO to

Pinpoint Test G426404p3.

B2832

Rear Mode Servo

Failure

•

Rear mode servo
position feedback
circuit - open circuit,
short to power or
ground

Carry out any pinpoint tests associated

with this DTC using the manufacturer

approved diagnostic system. Refer to

electrical circuit diagrams and check rear

mode servo position feedback circuit for

open circuit, short to power or ground For

mode servo circuit tests, GO to Pinpoint

Test G426404p1.

and GO to Pinpoint Test G426404p5.

B2833

Servo Sensor

Supply Fault

•

Servo sensor power
supply circuit - open
or short to power or
ground

Carry out any pinpoint tests associated

with this DTC using the manufacturer

approved diagnostic system. Refer to

electrical circuit diagrams and check Servo

sensor power supply circuit for open

circuit, short to power or ground. For

sensor power supply circuit tests, GO to

Pinpoint Test G426404p11.

B2834

Air Mix Servo

Failure

•

LH or RH air mix servo
position feedback
circuit - open or short
to power or ground

Carry out any pinpoint tests associated

with this DTC using the manufacturer

approved diagnostic system. Refer to

electrical circuit diagrams and check LH or

RH air mix servo position feedback

circuit's for open circuit, short to power or

ground. For air mix servo circuit tests, GO

to Pinpoint Test G426404p2.

and GO to Pinpoint Test G426404p5.

B2844

Ignition Circuit

Fault

•

Ignition power circuit
to climate control
module circuit - open
or short to ground

Refer to electrical circuit diagrams and

check ignition power circuit to climate

control module circuit for open circuit or

short to ground. For climate control

module ignition power circuit tests, GO to

Pinpoint Test G426404p8.

U2022

Communication

Fault on

Dedicated

Protocol

Internal climate control

module failure

Suspect the climate control module.

Replace as required, refer to the new

module installation note at the top of the

DTC Index

U2516 CAN Bus fault

CAN Bus circuit fault (No CAN

messages received during

ignition on from other

electronic control module's)

Refer to electrical circuit diagrams and

check CAN Bus circuit for fault. For CAN

circuit tests,

Communications Network

Pinpoint Tests

PINPOINT TEST G426404p1 : DTC
B2832: MODE SERVO CIRCUIT TEST

G426404t1 : CHECK THE MODE SERVO POSITION FEEDBACK CIRCUIT FOR
SHORT TO GROUND

1. Disconnect the battery negative terminal.

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

Disconnect the mode servo connector RA09. 4. Measure the resistance between the rear climate

control module connector RA1, pin 01 and GROUND.

www.

•

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 G426404t2.

G426404t2 : CHECK THE MODE SERVO POSITION FEEDBACK CIRCUIT FOR
OPEN CIRCUIT

1. Measure the resistance between the rear climate control module connector RA1, pin 01 and mode

servo connector RA09, 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

GO to Pinpoint Test G426404t3.

G426404t34 : CHECK THE MODE SERVO MOTOR FEED CIRCUIT FOR OPEN
CIRCUIT

1. Measure the resistance between the rear climate control module connector RA2, pin 04 and mode

servo connector RA09, pin 04.

•

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 G426404t35.

G426404t35 : CHECK THE MODE SERVO MOTOR FEED CIRCUIT FOR SHORT
TO GROUND

1. Measure the resistance between the rear climate control module connector RA2, pin 04 and

GROUND.

•

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 G426404t36.

G426404t36 : CHECK THE MODE SERVO MOTOR RETURN CIRCUIT FOR
OPEN CIRCUIT

1. Measure the resistance between the rear climate control module connector RA2, pin 05 and mode

servo connector RA09, pin 05.

•

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 G426404t37.

G426404t37 : CHECK THE MODE SERVO MOTOR RETURN CIRCUIT FOR
SHORT TO GROUND

1. Measure the resistance between the rear climate control module connector RA2, pin 05 and

GROUND.

•

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 G426404t3.

G426404t3 : CHECK THE MODE SERVO POSITION FEEDBACK CIRCUIT FOR
SHORT 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 rear climate control module connector RA1, pin 01 and GROUND.

•

Is the voltage greater than 3 volts?

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