Ford Galaxy / Ford S-MAX. Manual — part 776

between the Smart Junction Box and the rear lamp
unit with the aid of the Wiring Diagrams. CHECK
system operates correctly

B14: CHECK THE POWER SUPPLY TO THE RIGHT-HAND REAR FOG LAMP FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Right-hand rear fog lamp from
connector C4LS36.

2

Ignition switch in position II.

3

SWITCH ON the rear fog lamps.

4

Measure the voltage between right-hand rear fog
lamp, connector C4LS36, pin 1, circuit CLS45A

(BN/GN), wiring harness side and ground.

5

Does the meter display battery voltage?
Yes

GO to B15

.

No

GO to B16

.

B15: CHECK GROUND SUPPLY OF RIGHT-HAND REAR FOG LAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the right-hand
rear fog lamp, connector C4LS36, pin 2, circuit

GD150W (BK/WH), wiring harness side and ground.

2

Is a resistance of less than 2 Ohm registered?
Yes

INSTALL A NEW rear lamp unit. CHECK system
operates correctly

No

LOCATE and RECTIFY the break in the circuit
between the rear fog lamp and soldered connection
SP534 with the aid of the Wiring Diagrams. CHECK
system operates correctly

B16: CHECK THE POWER SUPPLY TO THE RIGHT-HAND REAR FOG LAMP FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02B.

2

Measure the resistance between the Smart
Junction Box, connector C1BP02B, pin 38, circuit

CLS45B (BN/GN), wiring harness side and the
right-hand rear fog lamp, connector C4LS36, pin 1,
circuit CLS45A (BN/GN), wiring harness side.

3

Is a resistance of less than 2 Ohm registered?
Yes

INSTALL A NEW Smart Junction Box. CHECK
system operates correctly

No

LOCATE and RECTIFY the break in the circuit
between the Smart Junction Box and the rear lamp
unit with the aid of the Wiring Diagrams. CHECK
system operates correctly

PINPOINT TEST C : THE FOG LAMPS ARE ON CONTINUOUSLY

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

C1: RULE OUT THE LIGHTS CONTROL MODULE AS A POSSIBLE CAUSE OF THE FAULT

Ignition switch in position 0.

1

Disconnect fuse F33 (5 A) (EJB).

2

Ignition switch in position II.

3

CHECK fog lamps.

4

Are all the fog lamps permanently lit up?
Yes

INSTALL A NEW Smart Junction Box. CHECK system operates correctly If
the concern persists:
REFER to:

Communications Network

(418-00 Module Communications

Network, Diagnosis and Testing).

No

- Both front fog lamps permanently lit:

GO to C2

.

- Both rear fog lamps permanently lit: INSTALL A NEW Smart Junction Box.
CHECK system operates correctly If the concern persists:
REFER to:

Communications Network

(418-00 Module Communications

Network, Diagnosis and Testing).
- One rear fog lamp permanently lit:

GO to C3

.

- No fog lamp permanently lit: INSTALL A NEW lights control module.
CHECK system operates correctly

C2: RULE OUT THE SMART JUNCTION BOX AS A POSSIBLE CAUSE OF THE FAULT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector C1BP02A.

2

Ignition switch in position II.

3

CHECK the front fog lamps.

4

Is the left-hand front fog lamp lit up continuously?
Yes

LOCATE and RECTIFY the short to battery voltage in the circuit between the
Smart Junction Box and the left-hand front fog lamp with the aid of the
Wiring Diagrams. CHECK system operates correctly

No

- Right-hand front fog lamp permanently lit: LOCATE and RECTIFY the short
to battery voltage in the circuit between the Smart Junction Box and the
right-hand front fog lamp with the aid of the Wiring Diagrams. CHECK

system operates correctly
- No front fog lamp permanently lit: INSTALL A NEW Smart Junction Box.
CHECK system operates correctly If the concern persists:
REFER to:

Communications Network

(418-00 Module Communications

Network, Diagnosis and Testing).

C3: RULE OUT THE SMART JUNCTION BOX AS A POSSIBLE CAUSE OF THE FAULT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector C1BP02B.

2

Ignition switch in position II.

3

CHECK the rear fog lamps.

4

Is the left-hand rear fog lamp lit up continuously?
Yes

LOCATE and RECTIFY the short to battery voltage in the circuit between the
Smart Junction Box and the left-hand rear fog lamp with the aid of the
Wiring Diagrams. CHECK system operates correctly

No

- Right-hand rear fog lamp permanently lit: LOCATE and RECTIFY the short
to battery voltage in the circuit between the Smart Junction Box and the
right-hand rear fog lamp with the aid of the Wiring Diagrams. CHECK
system operates correctly
- No rear fog lamp permanently lit: INSTALL A NEW Smart Junction Box.
CHECK system operates correctly If the concern persists:
REFER to:

Communications Network

(418-00 Module Communications

Network, Diagnosis and Testing).

Exterior Lighting - Reversing Lamps

S-MAX/Galaxy 2006.5 (02/2006-)

Print

Diagnosis and Testing

Refer to Wiring Diagrams Section 417-01, for schematic and connector
information.

Special Tool(s)

Inspection and Testing

NOTE: The generic electronic module (GEM) is part of the central junction box (CJB).
NOTE: If a new GEM module is being installed, the new module must be configured
following installation. For this purpose, the vehicle-specific data is read out of the module
to be changed using WDS and is transferred to the new module. REFER to:

Module Configuration

(418-01 Module Configuration, General Procedures),

Generic Electronic Module (GEM)

(419-10 Multifunction Electronic Modules, Diagnosis and

Testing).

NOTE: Before reading out the vehicle-specific data make sure that all electrical
connections in the vehicle are reconnected so that the module and WDS can communicate
correctly.

1. 1. Verify the customer concern.

2. 2. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

3. 3. Resolve any obvious causes or concerns found during the visual inspection before

carrying out any further tests.

4. 4. If the cause of the concern cannot be found by visual inspection, continue with the

symptom chart.

Symptom chart

Symptom chart

Terminal Probe Kit

29-011A

Electrical

Fuse(s)
Bulb(s)
Connector
Switch
Wiring loom

Symptom

Possible Sources

Action

The Backup Lamps Are Inoperative

Fuse(s)
Backup lamp switch
Circuit(s)
Central Junction Box (CJB)

*
*
*
*

GO to Pinpoint Test

A.

*

One backup lamp is inoperative

Circuit(s)
Tailgate lamps assembly

*
*

GO to Pinpoint Test

B.

*

The Backup Lamps Are On Continuously

Circuit(s)
Backup lamp switch

*
*

GO to Pinpoint Test

C.

*