Ford Galaxy / Ford S-MAX. Manual — part 769

wiring diagrams. CHECK system operates correctly

B3: CHECK THE CIRCUIT BETWEEN THE HAZARD WARNING LIGHTS SWITCH AND THE
SMART JUNCTION BOX FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Smart Junction Box from connector
C1BP02C.

2

Measure the resistance between the hazard
warning lights switch, connector C2LS32, pin 6,

circuit CLS32A (BN/YE), wiring harness side and
the Smart Junction Box, connector C1BP02C, pin 8,
circuit CLS32A (BN/YE), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

INSTALL A NEW Smart Junction Box. CHECK
system operates correctly

No

LOCATE and RECTIFY the break in the circuit
between the hazard warning lights switch and the
Smart Junction Box with the aid of the Wiring
Diagrams. CHECK system operates correctly

PINPOINT TEST C : SINGLE OR MULTIPLE TURN SIGNAL LAMPS
INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

C1: DETERMINE THE CONDITION UNDER WHICH THE FAULT OCCURS

Ignition switch in position II.

1

CHECK the turn signal lamps.

2

SWITCH ON the left-hand turn signal.

3

SWITCH ON the right-hand turn signal.

4

Is one or more turn signal lamp on the left-hand side
inoperative?
Yes

- All turn signal lamps on left-hand side
inoperative: CHECK and if necessary RENEW the
steering wheel/steering column switch. CHECK
system operates correctly If the concern persists:
REFER to:

Communications Network

(418-00

Module Communications Network, Diagnosis and
Testing).
- Left-hand front turn signal lamp is inoperative:

GO to C2

.

- Left-hand rear turn signal lamp is inoperative:

GO

to C5

.

- Integrated turn signal lamp in the left-hand
exterior mirror is inoperative:

GO to C8

.

No

- All turn signal lamps on right-hand side
inoperative: CHECK and if necessary RENEW the
steering wheel/steering column switch. CHECK
system operates correctly If the concern persists:
REFER to:

Communications Network

(418-00

Module Communications Network, Diagnosis and
Testing).

- Right-hand front turn signal lamp is inoperative:

GO to C16

.

- Right-hand rear turn signal lamp is inoperative:

GO to C19

.

- Integrated turn signal lamp in the right-hand
exterior mirror is inoperative:

GO to C22

.

- Integrated turn signal lamps in the exterior
mirrors on both sides are inoperative:

GO to C30

.

C2: CHECK GROUND SUPPLY OF LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector
C1LF08.

2

Measure the resistance between the left-hand
headlamp, connector C1LF08, pin 7, circuit

GD130T (BK/YE), wiring harness side and ground.

3

Measure the resistance between the left-hand
headlamp, connector C1LF08, pin 9, circuit

GD130AS (BK/YE), wiring harness side and ground.

4

Is a resistance of less than 2 Ohm measured in both
cases?
Yes

GO to C3

.

No

LOCATE and RECTIFY the break in the relevant
circuit between the headlamp and soldered
connection SP371 using the wiring diagrams.
CHECK system operates correctly

C3: CHECK THE VOLTAGE SUPPLY OF THE FRONT LEFT-HAND TURN SIGNAL LAMP
FOR OPEN CIRCUIT

Ignition switch in position II.

1

CHECK the turn signal lamps.

2

SWITCH ON the left-hand turn signal.

3

Measure the voltage between the left-hand
headlamp, connector C1LF08, pin 8, circuit CLS21A

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

4

Is fluctuating battery voltage measured?
Yes

CHECK the left-hand headlamp and RENEW it as
necessary. CHECK system operates correctly

No

GO to C4

.

C4: CHECK VOLTAGE SUPPLY OF THE FRONT LEFT-HAND TURN SIGNAL LAMP 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 19, circuit

CLS21A (BU/GN), wiring harness side and the left-
hand headlamp, connector C1LF08, pin 8, circuit
CLS21A (BU/GN), wiring harness side.

3

Is a resistance of less than 2 Ohms 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 headlamp

with the aid of the Wiring Diagrams. CHECK system
operates correctly

C5: CHECK GROUND CONNECTION TO LEFT-HAND REAR LAMP ASSEMBLY FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Left-hand rear lamp assembly from
connector C4LS18A.

2

Measure the resistance between the left-hand rear
lamp assembly, connector C4LS18A, pin 3, circuit

GD150C (BK/WH), wiring harness side and ground.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to C6

.

No

LOCATE and RECTIFY the break in the circuit
between the rear lamp assembly and soldered
connection SP549 with the aid of the Wiring
Diagrams. CHECK system operates correctly

C6: CHECK VOLTAGE SUPPLY TO LEFT-HAND REAR LAMP ASSEMBLY FOR OPEN
CIRCUIT

Ignition switch in position II.

1

SWITCH ON the left-hand turn signal.

2

Measure the voltage between the left-hand rear
lamp assembly, connector C4LS18A, pin 4, circuit

CLS23A (GY/OG), wiring harness side and ground.

3

Is fluctuating battery voltage measured?
Yes

CHECK and if necessary RENEW the left-hand rear
lamp assembly. CHECK system operates correctly

No

GO to C7

.

C7: CHECK VOLTAGE SUPPLY TO LEFT-HAND REAR LAMP ASSEMBLY 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 36, circuit

CLS23A (GY/OG), wiring harness side and the rear
left lamp assembly, connector C4LS18A, pin 4,
circuit CLS23A (GY/OG), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

CHECK the Smart Junction Box with the aid of the
WDS and RENEW it if required. CHECK system
operates correctly

No

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

C8: CHECK FUSE FA1/FA2 (25 A) (RJB)

Ignition switch in position 0.

1

Disconnect Fuse.

LHD: FA1 (25 A) (RJB)

RHD: FA2 (25 A) (RJB)

2

CHECK Fuse.

LHD: FA1 (25 A) (RJB)

RHD: FA2 (25 A) (RJB)

3

Is the fuse OK.?
Yes

GO to C9

.

No

- LHD: RENEW fuse FA1 (25 A) (RJB). CHECK
system operates correctly If the fuse blows again,
LOCATE and RECTIFY the short to ground using the
Wiring Diagrams. CHECK system operates correctly
- RHD: RENEW fuse FA2 (25 A) (RJB). CHECK
system operates correctly If the fuse blows again,
LOCATE and RECTIFY the short to ground using the
Wiring Diagrams. CHECK system operates correctly

C9: CHECK THE VOLTAGE SUPPLY TO FUSE FA1/FA2 (25 A) (RJB) FOR OPEN CIRCUIT

Connect Fuse.

LHD: FA1 (25 A) (RJB)

RHD: FA2 (25 A) (RJB)

1

Ignition switch in position II.

2

Measure the voltage between fuse:

LHD: FA1 (25 A) (RJB) and ground.

RHD: FA2 (25 A) (RJB) and ground.

3

Does the meter display battery voltage?