Ford Galaxy / Ford S-MAX. Manual — part 652

    System Checks

    Rear junction box (RJB)

    *

    Auxiliary climate control inoperative
    (blower OK)

    Fuse(s)
    Circuit(s)
    Quantity of refrigerant
    Climate control assembly
    Electronic automatic temperature

    control (EATC) module

    Auxiliary climate control module
    Refrigerant pressure transducer
    A/C clutch relay
    Air conditioning clutch
    Generic Electronic Module (GEM)
    Powertrain control module (PCM)
    Ambient temperature sensor
    Expansion/cut-out valve

    *
    *
    *
    *
    *

    *
    *
    *
    *
    *
    *
    *
    *

    GO to

    Pinpoint Test

    B.

    *

    Malfunction - auxiliary climate control
    temperature control flap

    Circuit(s)
    Auxiliary climate control

    temperature control flap actuator

    Auxiliary climate control

    temperature control flap

    Auxiliary climate control module

    *
    *

    *

    *

    GO to

    Pinpoint Test

    C.

    *

    Circuit of auxiliary climate control air
    outlet temperature sensor, faulty

    Circuit(s)
    Auxiliary climate control air outlet

    temperature sensor

    Auxiliary climate control module

    *
    *

    *

    GO to

    Pinpoint Test

    D.

    *

    PINPOINT TEST A : AUXILIARY CLIMATE CONTROL BLOWER MOTOR
    INOPERATIVE/NOT OPERATING CORRECTLY

    TEST CONDITIONS

    DETAILS/RESULTS/ACTIONS

    A1: CHECK FUNCTION OF AUXILIARY CLIMATE CONTROL BLOWER MOTOR

    Ignition switch in position II.

    1

    SWITCH ON auxiliary climate control.

    2

    Check all speed settings of the auxiliary climate
    control blower motor.

    3

    Is the auxiliary climate control blower motor
    inoperative in all of the speed settings?
    Yes

    GO to A2

    .

    No

    GO to A18

    .

    A2: CHECK FUSE FC6 (20 A) (RJB).

    Ignition switch in position 0.

    1

    Disconnect Fuse FC6 (20 A) (RJB)..

    2

    CHECK Fuse FC6 (20 A) (RJB)..

    3

    Is the fuse OK?
    Yes

    GO to A3

    .

    No

    RENEW fuse FC6 (20 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.

    A3: CHECK VOLTAGE AT FUSE FC6 (20 A) (RJB).

    Connect Fuse FC6 (20 A) (RJB)..

    1

    Ignition switch in position II.

    2

    Measure the voltage between fuse FC6 (20 A)

    3

    (RJB) and ground.

    Does the meter display battery voltage?
    Yes

    GO to A4

    .

    No

    LOCATE AND RECTIFY the break in the voltage
    supply of fuse FC6 (20 A) (RJB) using the Wiring
    Diagrams. CHECK the operation of the system.

    A4: CHECK FUSE FB6 (10 A) (RJB).

    Ignition switch in position 0.

    1

    Disconnect Fuse FB6 (10 A) (RJB)..

    2

    CHECK Fuse FB6 (10 A) (RJB)..

    3

    Is the fuse OK?
    Yes

    GO to A5

    .

    No

    RENEW fuse FB6 (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.

    A5: CHECK VOLTAGE AT FUSE FB6 (10 A) (RJB).

    Connect Fuse FB6 (10 A) (RJB)..

    1

    Ignition switch in position II.

    2

    Measure the voltage between fuse FB6 (10 A)
    (RJB) and ground.

    3

    Does the meter display battery voltage?
    Yes

    GO to A6

    .

    No

    LOCATE AND RECTIFY the break in the voltage
    supply of fuse FB6 (10 A) (RJB) using the Wiring
    Diagrams. CHECK the operation of the system.

    A6: CHECK VOLTAGE AT AUXILIARY CLIMATE CONTROL BLOWER MOTOR

    Ignition switch in position 0.

    1

    Disconnect Connector C4HA19 from auxiliary
    climate control blower motor.

    2

    Ignition switch in position II.

    3

    Measure the voltage between the auxiliary climate
    control blower motor, connector C4HA19, pin 2,

    circuit B_CBR11D (BN), wiring harness side and
    ground.

    4

    Does the meter display battery voltage?
    Yes

    GO to A13

    .

    No

    GO to A7

    .

    A7: CHECK THE VOLTAGE AT THE AUXILIARY CLIMATE CONTROL BLOWER RELAY
    (PIN 3)

    Ignition switch in position 0.

    1

    Disconnect Auxiliary climate control blower relay
    from socket RC1.

    2

    Ignition switch in position II.

    3

    Measure the voltage between the auxiliary climate
    control blower relay, socket RC1, pin 3, circuit

    C_SBR06A (BN/RD), wiring harness side and
    ground.

    4

    Does the meter display battery voltage?
    Yes

    GO to A8

    .

    No

    LOCATE AND RECTIFY the break in the circuit
    between the auxiliary climate control blower relay
    and fuse FC6 (20 A) (RJB) using the Wiring
    Diagrams. CHECK the operation of the system.

    A8: CHECK THE VOLTAGE AT THE AUXILIARY CLIMATE CONTROL BLOWER RELAY
    (PIN 1)

    Measure the voltage between the auxiliary climate
    control blower relay, socket RC1, pin 1, circuit

    B_CBR06C (WH/BU), wiring harness side and
    ground.

    1

    Does the meter display battery voltage?
    Yes

    GO to A9

    .

    No

    LOCATE AND RECTIFY the break in the circuit
    between the auxiliary climate control blower relay
    and fuse FB6 (10 A) (RJB) using the Wiring
    Diagrams. CHECK the operation of the system.

    A9: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
    RELAY AND THE AUXILIARY CLIMATE CONTROL BLOWER MOTOR FOR OPEN CIRCUIT

    Ignition switch in position 0.

    1

    Measure the resistance between the auxiliary
    climate control blower relay, socket RC1, pin 5,

    circuit C_CBR06A (WH/BU), wiring harness side and
    the auxiliary climate control blower motor,
    connector C4HA19, pin 2, circuit B_CBR11D (BN),
    wiring harness side.

    2

    Is a resistance of less than 2 Ohms registered?
    Yes

    GO to A11

    .

    No

    GO to A10

    .

    A10: CHECK THE CIRCUIT BETWEEN THE RJB AND THE AUXILIARY CLIMATE
    CONTROL BLOWER MOTOR FOR OPEN CIRCUIT

    Disconnect Connector C4BR02-B from RJB.

    1

    Measure the resistance between the RJB, connector
    C4BR02-B, pin 312, circuit C_CBR06A (WH/BU),

    wiring harness side and the auxiliary climate control

    2

    blower motor, connector C4HA19, pin 2, circuit
    B_CBR11D (BN), wiring harness side.

    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
    blower motor using the Wiring Diagrams. CHECK
    the operation of the system.

    A11: CHECK THE CIRCUIT BETWEEN THE AUXILIARY CLIMATE CONTROL BLOWER
    RELAY AND THE AUXILIARY CLIMATE CONTROL MODULE FOR OPEN CIRCUIT

    Disconnect C3H101-A from auxiliary climate control
    module.

    1

    Measure the resistance between the auxiliary
    climate control blower relay, socket RC1, pin 2,

    circuit CHA05A (BN/WH), socket side and the
    auxiliary climate control module, connector
    C3H101-A, pin 11, circuit CHA05A (BN/WH), wiring
    harness side.

    2

    Is a resistance of less than 2 Ohms registered?
    Yes

    CHECK auxiliary climate control blower relay in
    accordance with the Component Checks at the end
    of this section. If the auxiliary climate control
    blower relay is OK, CHECK RJB and RENEW if
    necessary. CHECK the operation of the system.

    No

    GO to A12

    .

    A12: 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 313, circuit CHA05A (BN/WH),

    wiring harness side and the auxiliary climate control
    module, connector C3H101-A, pin 11, circuit
    CHA05A (BN/WH), 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.

    A13: CHECK THE GROUND CONNECTION OF THE AUXILIARY CLIMATE CONTROL
    BLOWER CONTROL MODULE

    Ignition switch in position 0.

    1

    Disconnect Connector C4HA25 from auxiliary
    climate control blower control module.

    2

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

    C4HA25, pin 1, circuit GD150AH (BK/WH), wiring

    3

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    Текст

    Матвей Александрович29.05.2024 19:10
    Политика конфиденциальности