Ford Galaxy / Ford S-MAX. Manual — part 653

harness side and ground.

Is a resistance of less than 2 Ohms registered?
Yes

GO to A14

.

No

LOCATE and RECTIFY the break in the circuit
between the auxiliary climate control blower control
module and ground connection G4D149 using the
Wiring Diagrams. CHECK the operation of the
system.

A14: CHECK THE VOLTAGE AT THE AUXILIARY CLIMATE CONTROL BLOWER CONTROL
MODULE

Ignition switch in position II.

1

Measure the voltage between the auxiliary climate
control blower control module, connector C4HA25,

pin 4, circuit B_CBR11C (BN), wiring harness side
and ground.

2

Does the meter display battery voltage?
Yes

GO to A16

.

No

GO to A15

.

A15: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
CONTROL MODULE AND THE RJB FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C4BR02-B from RJB.

2

Measure the resistance between the auxiliary
climate control blower control module, connector

C4HA25, pin 4, circuit B_CBR11C (BN), wiring
harness side and RJB, connector C4BR02-B, pin
312, circuit C_CBR06A (WH/BU), wiring harness
side.

3

Is a resistance of less than 2 Ohms registered?
Yes

CHECK RJB and RENEW if necessary. CHECK the
operation of the system.

No

LOCATE and RECTIFY the break in the circuit
between the auxiliary climate control blower control
module and the RJB using the Wiring Diagrams.
CHECK the operation of the system.

A16: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
MOTOR AND THE AUXILIARY CLIMATE CONTROL BLOWER CONTROL MODULE FOR
OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C4HA19 from auxiliary
climate control blower motor.

2

Measure the resistance between the auxiliary
climate control blower motor, connector C4HA19,

pin 1, circuit VHA19A (BN), wiring harness side and
the auxiliary climate control blower control module,
connector C4HA25, pin 3, wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to A17

.

No

LOCATE and RECTIFY the break in circuit VHA19A
(BN) between the auxiliary climate control blower

motor and the auxiliary climate control blower
control module using the Wiring Diagrams. CHECK
the operation of the system.

A17: CHECK AUXILIARY CLIMATE CONTROL BLOWER CONTROL MODULE

Connect Connector C4HA19 to auxiliary climate
control blower motor.

1

Using a fused test cable (40 A), bridge connector
C4HA25 on the auxiliary climate control blower

control module between pin 3, circuit VHA19A (BN),
wiring harness side and pin 1, circuit GD150AH
(BK/WH), wiring harness side.

2

Ignition switch in position II.

3

Does the auxiliary climate control blower motor run at
full speed?
Yes

GO to A18

.

No

RENEW the auxiliary climate control blower motor.
CHECK the operation of the system.

A18: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
CONTROL MODULE AND THE AUXILIARY CLIMATE CONTROL MODULE FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C4HA25 from auxiliary
climate control blower control module.

2

Disconnect Connector C3H101-R from auxiliary
climate control module.

3

Measure the resistance between the auxiliary
climate control blower control module, connector

C4HA25, pin 2, circuit VHA25A (BN/VT), wiring
harness side and the auxiliary climate control
module, connector C3H101-R, pin 13, circuit
VHA25A (BN/VT), wiring harness side.

4

Is a resistance of less than 2 Ohms registered?
Yes

GO to A19

.

No

LOCATE and RECTIFY the break in circuit VHA25A
(BN/VT) between the auxiliary climate control
blower control module and the auxiliary climate
control module using the Wiring Diagrams. CHECK
the operation of the system.

A19: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
CONTROL MODULE AND THE AUXILIARY CLIMATE CONTROL MODULE FOR SHORT
CIRCUIT TO VOLTAGE

Ignition switch in position II.

1

Measure the voltage between the auxiliary climate
control module, connector C3H101-R, pin 13,

circuit VHA25A (BN/VT), wiring harness side and
ground.

2

Does the meter display battery voltage?
Yes

LOCATE and RECTIFY the short to voltage in circuit
VHA25A (BN/VT) between the auxiliary climate
control blower control module and the auxiliary
climate control module using the Wiring Diagrams.
CHECK the operation of the system.

No

GO to A20

.

A20: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
CONTROL MODULE AND THE AUXILIARY CLIMATE CONTROL MODULE FOR SHORT
CIRCUIT TO GROUND

Ignition switch in position 0.

1

Measure the resistance between the auxiliary
climate control module, connector C3H101-R, pin

13, circuit VHA25A (BN/VT), wiring harness side
and ground.

2

Is a resistance of more than 10,000 Ohm measured?
Yes

RENEW auxiliary climate control blower control
module. CHECK the operation of the system. If the
system is still inoperative, CHECK the auxiliary
climate control module using WDS and RENEW if
necessary. CHECK the operation of the system.

No

LOCATE and RECTIFY the short to ground in circuit
VHA25A (BN/VT) between the auxiliary climate
control blower control module and the auxiliary
climate control module using the Wiring Diagrams.
CHECK the operation of the system.

PINPOINT TEST B : AUXILIARY CLIMATE CONTROL INOPERATIVE
(BLOWER OK)

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

B1: CHECK FUSE FC4 (10 A) (RJB).

Ignition switch in position 0.

1

CHECK Fuse FC4 (10 A) (RJB)..

2

Is the fuse OK?
Yes

GO to B2

.

No

RENEW fuse FC4 (10 A) (RJB). CHECK the operation
of the system. If the fuse blows again, LOCATE and
RECTIFY short using the Wiring Diagrams. CHECK the
operation of the system.

B2: CHECK VOLTAGE AT FUSE FC4 (10 A) (RJB).

Connect Fuse FC4 (10 A) (RJB)..

1

Ignition switch in position II.

2

Measure the voltage between fuse FC4 (10 A) (RJB)
and ground.

3

Does the meter display battery voltage?
Yes

GO to B3

.

No

LOCATE AND RECTIFY the break in the voltage
supply of fuse FC4 (10 A) (RJB) using the Wiring
Diagrams. CHECK the operation of the system.

B3: CHECK VOLTAGE AT AUXILIARY CLIMATE CONTROL MODULE, PIN 1

Ignition switch in position 0.

1

Disconnect Connector C3H101-A from auxiliary
climate control module.

2

Measure the voltage between the auxiliary climate
control module, connector C3H101-A, pin 1, circuit

C_SBR04A (GN/RD), wiring harness side and ground.

3

Does the meter display battery voltage?
Yes

GO to B5

.

No

GO to B4

.

B4: CHECK THE CIRCUIT BETWEEN THE RJB AND THE AUXILIARY CLIMATE CONTROL
MODULE FOR OPEN CIRCUIT

Disconnect Connector C4BR02-C from RJB.

1

Measure the resistance between the RJB, connector
C4BR02-C, pin 305, circuit C_SBR04A (GN/RD),

wiring harness side and the auxiliary climate control
module, connector C3H101-A, pin 1, wiring harness
side.

2

Is a resistance of less than 2 Ohms registered?
Yes

CHECK RJB and RENEW if necessary. CHECK the
operation of the system.

No

LOCATE and RECTIFY the break in the circuit
between the RJB and the auxiliary climate control
module using the Wiring Diagrams. CHECK the
operation of the system.

B5: CHECK VOLTAGE AT AUXILIARY CLIMATE CONTROL MODULE, PIN 6

Ignition switch in position II.

1

SWITCH ON auxiliary climate control.

2

Measure the voltage between the auxiliary climate
control module, connector C3H101-A, pin 6, circuit

B_CBR06B (WH/BU), wiring harness side and
ground.

3

Does the meter display battery voltage?
Yes

GO to B7

.

No

GO to B6

.

B6: CHECK THE CIRCUIT BETWEEN THE RJB AND THE AUXILIARY CLIMATE CONTROL
MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C4BR02-B from RJB.

2

Measure the resistance between the RJB, connector
C4BR02-B, pin 221, circuit B_CBR06B (WH/BU),

wiring harness side and the auxiliary climate control
module, connector C3H101-A, pin 6, wiring harness

3