Ford Galaxy / Ford S-MAX. Manual — part 784

Pinpoint test

NOTE: Use a digital multimeter for all electrical measurements.

One parking, rear or license lamp(s) is inoperative

Fuse(s)
Circuit(s)
LCM (Lights Control

Module)

License plate lamp
Rear lamp unit
Conventional

Headlamps

Xenon headlamp
Central Junction Box

(CJB)

*
*
*

*
*
*

*
*

GO to Pinpoint

Test

B.

*

All or one parking lamp(s), tail lamp(s) or licence
plate lamp(s) is/are permanently lit

Circuit(s)
LCM (Lights Control

Module)

Trailer socket
Central Junction Box

(CJB)

*
*

*
*

GO to Pinpoint

Test

C.

*

PINPOINT TEST A : ALL PARKING LAMPS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

A1: CHECK FUSE F17 (60 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F17 (60 A) (EJB).

2

CHECK fuse F17 (60 A) (EJB).

3

Is the fuse OK.?
Yes

GO to A2

.

No

RENEW fuse F17 (60 A) (EJB) and CHECK the
operation of the system. If the fuse blows again,
LOCATE and RECTIFY the short to ground using the
Wiring Diagrams. CHECK system operates correctly

A2: CHECK FUSE F18 (60 A) (EJB)

Disconnect fuse F18 (60 A) (EJB).

1

CHECK fuse F18 (60 A) (EJB).

2

Is the fuse OK.?
Yes

GO to A3

.

No

RENEW fuse F18 (60 A) (EJB) and CHECK the
operation of the system. If the fuse blows again,
LOCATE and RECTIFY the short to ground using the
Wiring Diagrams. CHECK system operates correctly

A3: CHECK THE GROUND CONNECTION OF THE LIGHTS CONTROL MODULE FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C2LF23D from lighting
control module.

2

Measure the resistance between the lights control
module, connector C2LF23D, pin 5, circuit

GD133BT (BK), wiring harness side and ground.

3

Is a resistance of less than 2 Ohm registered?
Yes

GO to A4

.

No

LOCATE AND RECTIFY the break in the circuits
between the lights control module and ground
connection G3D134 with the aid of the Wiring
Diagrams. CHECK system operates correctly

A4: CHECK THE VOLTAGE SUPPLY TO THE SMART JUNCTION BOX FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02G.

2

Measure the voltage between the Smart Junction
Box, connector C1BP02G, pin 1, circuit SBB17A

(RD), wiring harness side and ground.

3

Ignition switch in position II.

4

Does the meter display battery voltage?
Yes

GO to A5

.

No

LOCATE and RECTIFY the break in the circuits
between fuse F17 (60 A) (EJB) and the Smart
Junction Box with the aid of the wiring diagrams.
CHECK system operates correctly

A5: CHECK THE GROUND CONNECTION TO THE SMART JUNCTION BOX FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02A.

2

Measure the resistance between the Smart
Junction Box, connector C1BP02A, pin 54, circuit

GD123F (BK/GY), wiring harness side and ground.

3

Is a resistance of less than 2 Ohm registered?
Yes

GO to A6

.

No

LOCATE and RECTIFY the break in the circuits
between the Smart Junction Box and ground
connection G1D132B with the aid of the Wiring
Diagrams. CHECK system operates correctly

A6: RULE OUT THE LIGHTS CONTROL MODULE AS A POSSIBLE CAUSE OF THE FAULT

Connect Smart Junction Box from connector
C1BP02A.

1

Connect Smart Junction Box from connector
C1BP02G.

2

Are all parking lamps lit?
Yes

INSTALL A NEW lights control module. CHECK
system operates correctly

No

CHECK the Smart Junction Box with the aid of the
diagnostic unit and INSTALL a new one if
necessary. CHECK system operates correctly

PINPOINT TEST B : ONE PARKING, REAR OR LICENSE LAMP(S) IS
INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

B1: DETERMINE CONDITIONS UNDER WHICH THE FAULT OCCURS

SWITCH ON the parking lamps.

1

CHECK parking lamps and license plate lamps.

2

Are both parking lamps inoperative?
Yes

GO to Pinpoint Test

A.

No

- Both license plate lamps inoperative:

GO to B2

.

- One license plate lamp inoperative:

GO to B4

.

- Front left parking lamp inoperative:

GO to B6

.

- Front right parking lamp inoperative:

GO to B9

.

- Both rear lamps on the left-hand side inoperative:

GO to B12

.

- Rear lamp (rear lamp assembly) on the left-hand
side inoperative:

GO to B14

.

- Rear lamp (tailgate) on the left-hand side
inoperative:

GO to B15

.

- Both rear lamps on the right-hand side
inoperative:

GO to B17

.

- Rear lamp (rear lamp assembly) on the right-
hand side inoperative:

GO to B18

.

- Rear lamp (tailgate) on the right-hand side
inoperative:

GO to B20

.

B2: CHECK THE COMMON POWER SUPPLY OF THE LICENSE PLATE LAMPS FOR OPEN

Ignition switch in position 0.

1

Disconnect left-hand license plate lamp from
connector C4LS04.

2

Ignition switch in position II.

3

SWITCH ON the parking lamps.

4

Measure the voltage between the left-hand license
plate lamp, connector C4LS04, pin 1, circuit

CLS04C (YE/VT), wiring harness side and ground.

5

Does the meter display battery voltage?

Yes

LOCATE and RECTIFY the break in the circuits
between soldered connection SP534 and ground
connection G4D149 with the aid of the Wiring
Diagrams. CHECK system operates correctly

No

GO to B3

.

B3: CHECK THE COMMON POWER SUPPLY OF THE LICENSE PLATE LAMPS FOR OPEN

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 52, circuit

CLS04B (YE/VT), wiring harness side and the left-
hand license plate lamp, connector C4LS04, pin 1,
circuit CLS04C (YE/VT), 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 circuits
between the Smart Junction Box and soldered
connection SP400 with the aid of the Wiring
Diagrams. CHECK system operates correctly

B4: CHECK THE POWER SUPPLY TO THE LICENSE PLATE LAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect License plate lamp.

left: from connector C4LS04

right: from connector C4LS05

2

Ignition switch in position II.

3

SWITCH ON the parking lamps.

4

Measure the voltage between license plate lamp:

left: Connector C4LS04, pin 1, circuit CLS04C
(YE/VT), wiring harness side and ground.

right: Connector C4LS05, pin 1, circuit CLS04D
(YE/VT), wiring harness side and ground.

5

Does the meter display battery voltage?
Yes

GO to B5

.

No

LOCATE and RECTIFY the break in the circuit
between soldered connection SP400 and the license
plate lamp with the aid of the Wiring Diagrams.
CHECK system operates correctly

B5: CHECK THE GROUND CONNECTION OF THE LICENSE PLATE LAMP FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the license plate
lamp:

left: connector C4LS04, pin 2, circuit GD150M
(BK/WH), wiring harness side and ground.

2