Ford Galaxy / Ford S-MAX. Manual — part 787

Ignition switch in position II.

4

Does the meter display battery voltage?
Yes

GO to C7

.

No

LOCATE and RECTIFY the break in the circuits
between fuse F33 (5 A) (EJB) and the lights control
module with the aid of the wiring diagrams. CHECK
system operates correctly

C7: CHECK THE GROUND CONNECTION TO THE SMART JUNCTION BOX 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 65:

LHD: circuit GD140J (BK/GN), wiring harness
side and ground.

RHD: circuit GD134U (BK/VT), wiring harness
side and ground.

3

Is a resistance of less than 2 Ohm registered?
Yes

GO to C8

.

No

- LHD: LOCATE and RECTIFY the break in the
circuits between the Smart Junction Box and
ground connection G3D138 with the aid of the
Wiring Diagrams. CHECK system operates correctly
- RHD: LOCATE and RECTIFY the break in the
circuits between the Smart Junction Box and
ground connection G3D133 with the aid of the
Wiring Diagrams. CHECK system operates correctly

C8: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LIGHTS CONTROL
MODULE AND THE SMART JUNCTION BOX FOR SHORT CIRCUIT TO BATTERY VOLTAGE

Disconnect Smart Junction Box from connector
C1BP02C.

1

Disconnect Lights control module from connector
C2LF23D.

2

Ignition switch in position II.

3

Measure the voltage between the lights control
module, connector C2LF23D, pin 6, circuit VLF25A

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

4

Does the meter display battery voltage?
Yes

LOCATE and RECTIFY the short to battery voltage
in the circuits between the lights control module
and the Smart Junction Box with the aid of the
wiring diagrams. CHECK system operates correctly

No

GO to C9

.

C9: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LIGHTS CONTROL
MODULE AND THE SMART JUNCTION BOX FOR SHORT CIRCUIT TO GROUND

Ignition switch in position 0.

1

Measure the resistance between the lights control
module, connector C2LF23D, pin 6, circuit VLF25A

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

2

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

INSTALL A NEW lights control module. CHECK
system operates correctly

No

LOCATE and RECTIFY the short to ground in the
circuits between the lights control module and the
Smart Junction Box with the aid of the wiring
diagrams. CHECK system operates correctly

C10: CHECK THE CIRCUIT BETWEEN THE SMART JUNCTION BOX AND THE FRONT FOG
LAMP UNIT FOR SHORT TO BATTERY VOLTAGE

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02A.

2

Ignition switch in position II.

3

CHECK the parking lamps.

4

Is one of the front parking lamps permanently lit?
Yes

- Left-hand parking lamp permanently lit: Use the
Wiring Diagrams to LOCATE and RECTIFY the short
to battery voltage in circuits connected to the
Smart Junction Box, connector C1BP02A, pin 39.
CHECK system operates correctly
- Right-hand parking lamp permanently lit: Use the
Wiring Diagrams to LOCATE and RECTIFY the short
to battery voltage in circuits connected to the

Smart Junction Box, connector C1BP02A, pin 40.
CHECK system operates correctly

No

CHECK the Smart Junction Box and INSTALL A NEW
ONE if required. CHECK system operates correctly

C11: CHECK THE CIRCUIT BETWEEN THE SMART JUNCTION BOX AND THE REAR
PARKING LAMPS FOR SHORT TO BATTERY VOLTAGE

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02B.

2

Ignition switch in position II.

3

CHECK the parking lamps.

4

Are the rear parking lamps permanently lit on one
side?
Yes

- Left-hand rear parking lamp permanently lit: Use
the Wiring Diagrams to LOCATE and RECTIFY the
short to battery voltage in circuits connected to the
Smart Junction Box, connector C1BP02B, pin 50.
CHECK system operates correctly
- Right-hand rear parking lamp permanently lit:
Use the Wiring Diagrams to LOCATE and RECTIFY
the short to battery voltage in circuits connected to
the Smart Junction Box, connector C1BP02B, pin
51. CHECK system operates correctly

No

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

Communications Network

(418-00

Module Communications Network, Diagnosis and
Testing).

C12: CHECK THE CIRCUITS BETWEEN THE SMART JUNCTION BOX AND THE LICENSE
PLATE LAMPS FOR SHORT TO BATTERY VOLTAGE

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02B.

2

Ignition switch in position II.

3

CHECK the license plate lamps.

4

Do the license plate lamps illuminate continuously?
Yes

Use the Wiring Diagrams to LOCATE and RECTIFY
the short to battery voltage in circuits connected to
the Smart Junction Box, connector C1BP02B, pin
52. CHECK system operates correctly

No

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

Communications Network

(418-00

Module Communications Network, Diagnosis and
Testing).

Exterior Lighting - Trailer 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: A new generic electronic module (GEM) always needs to be configured after
installation. For this purpose, the vehicle-specific data are read out of the module to be
changed using the diagnostic unit and transferred to the new module.
NOTE: Before reading out the vehicle-specific data make sure that all electrical
connections in the vehicle are reconnected so that the module and the diagnostic unit can
communicate correctly.
NOTE: Ensure correct engagement of the wiring harness connectors.
NOTE: The maximum output voltage at the trailer socket is 13 Volt.

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 for a concern found during the visual inspection before

carrying out any further tests.

4. 4. If the concern persists after the visual inspection, PERFORM a fault diagnosis on

the generic electronic module (GEM) using the diagnostic unit and RESOLVE the
fault(s) displayed according to the fault description. CHECK system operates
correctly

5. 5. On a vehicle without stored fault(s), continue according to the Symptom Chart and

the corresponding symptom.

6. 6. After checking or rectifying the fault(s) and finishing the work, READ OUT the fault

memory in the generic electronic module (GEM) and DELETE any saved faults. After
performing a road test and CHECKING the system, READ OUT the fault memories
again.

Diagnostic Trouble Code (DTC) Table - Generic Electronic Module (GEM)

Terminal Probe Kit

29-011A

Electrical

Fuse(s)
Bulb(s)
Connector
Trailer socket
Trailer Lamps
Wiring loom

DTC

Description

Action