Ford Galaxy / Ford S-MAX. Manual — part 798

PINPOINT TEST C : THE REAR INTERIOR LAMP IS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

C1: CHECK OPERATION OF THE REAR INTERIOR LAMP

Check for operation of the rear interior lamp in both
the ON and DOOR OPEN positions.

1

Is the rear interior lamp inoperative in both positions?
Yes

GO to C3

.

No

If the rear interior lamp is inoperative in the ON
position.

GO to C5

.

If the rear interior lamp is inoperative in the DOOR
OPEN position.

GO to C2

.

C2: CHECK CIRCUIT CLN27F (WH/BN) AND CIRCUIT CLN27B (WH/BN) FOR OPEN
CIRCUIT

Disconnect Rear Interior Lamp C9LN14-D.

1

Disconnect CJB C1BP02-H.

2

Measure the resistance between the rear interior
lamp C9LN14-D pin 1, circuit CLN27F (WH/BN),

harness side and the CJB C1BP02-H pin 20, circuit
CLN27B (WH/BN), harness side .

3

Is the resistance less than 1 ohm?
Yes

INSTALL a new rear interior lamp. TEST the system
for normal operation.

No

REPAIR the circuit(s) as necessary. TEST the system
for normal operation. If the concern persists,
INSTALL a new CJB. TEST the system for normal
operation.

C3: CHECK CIRCUIT CBP17C (BN/GN) FOR VOLTAGE

Disconnect Rear Interior Lamp C9LN14-C.

1

Measure the voltage between the rear interior lamp
C9LN14-C pin 1, circuit CBP17C (BN/GN), harness

side and ground.

2

Is the voltage greater than 10 volts?
Yes

INSTALL a new rear interior lamp. TEST the system
for normal operation. If the concern persists, GO to
Pinpoint Test

H.

No

GO to C4

.

C4: CHECK REAR INTERIOR LAMP POWER CIRCUIT FOR OPEN CIRCUIT

Disconnect CJB C1BP02-C.

1

Measure the resistance between the rear interior

2

lamp C9LN14-C pin 1, circuit CBP17C (BN/GN),
harness side and the CJB C1BP02-C pin 67, circuit
CBP17R (BN/GN), harness side.

Is the resistance less than 1 ohm?
Yes

GO to Pinpoint Test

H.

No

REPAIR circuit CBP17C (BN/GN) or circuit CBP17R
(BN/GN) as necessary . TEST the system for normal
operation.

C5: CHECK CIRCUIT GD138M (BK/WH) FOR GROUND

Disconnect the battery ground cable.
REFER to:

Battery Disconnect and Connect

(414-01

Battery, Mounting and Cables, General Procedures).

1

Disconnect Rear Interior Lamp C9LN14-D.

2

Measure the resistance between the rear interior
lamp C9LN14-D pin 2, circuit GD138M (BK/WH),

harness side and ground.

3

Is the resistance less than 1 ohm?
Yes

INSTALL a new rear interior lamp. TEST the system
for normal operation.

No

REPAIR the circuit. TEST the system for normal
operation.

PINPOINT TEST D : THE LUGGAGE COMPARTMENT LAMP IS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

D1: CHECK CIRCUIT CBP17B (BN/GN) FOR VOLTAGE

Ignition switch in position 0.

1

Disconnect Luggage Compartment Lamp C4LN13-B.

2

Measure the voltage between the luggage
compartment lamp C4LN13-B pin 1, circuit CBP17B

(BN/GN), harness side and ground.

3

Is the voltage greater than 10 volts?
Yes

GO to D3

.

No

GO to D2

.

D2: CHECK LUGGAGE COMPARTMENT LAMP POWER CIRCUIT FOR OPEN CIRCUIT

Disconnect CJB C1BP02-B.

1

Measure the resistance between the luggage
compartment lamp C4LN13-B pin 1, circuit CBP17B

(BN/GN), harness side and the CJB C1BP02-B pin 56,
circuit A_CBP17A (BN/GN), harness side.

2

Is the resistance less than 1 ohm?
Yes

GO to Pinpoint Test

H.

No

REPAIR circuit CBP17B (BN/GN) or circuit A_CBP17A
(BN/GN) as necessary . TEST the system for normal
operation.

D3: CHECK THE SWITCHED SIGNAL TO THE LUGGAGE COMPARTMENT LAMP

Disconnect Liftgate Latch Motor C4PL17.

1

Measure the resistance between the luggage
compartment lamp C4LN13-B pin 2, circuit CLN13B

(WH/BU), harness side and the liftgate latch motor
C4PL17 pin 4, circuit CLN13C (WH/BU), harness side.

2

Is the resistance less than 1 ohm?
Yes

INSTALL a new luggage compartment lamp. TEST the
system for normal operation. If the concern persists,

GO to D4

.

No

REPAIR circuit CLN13B (WH/BU) or circuit CLN13C
(WH/BU) as necessary . TEST the system for normal
operation.

D4: CHECK THE LIFTGATE LATCH MOTOR FOR GROUND

Measure the resistance between the liftgate latch
motor C4PL17 pin 2, circuit GD150Y (BK/WH),

harness side and ground.

1

Is the resistance less than 5 ohms?
Yes

INSTALL a new liftgate latch motor.
REFER to:

Liftgate Latch

(501-14 Handles, Locks,

Latches and Entry Systems, Removal and
Installation).
TEST the system for normal operation.

No

REPAIR the circuit GD150Y (BK/WH). TEST the
system for normal operation.

PINPOINT TEST E : THE GLOVE COMPARTMENT LAMP IS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

E1: CHECK CIRCUIT CBP17N (BN/GN) FOR VOLTAGE

Disconnect Glove Compartment Lamp C2LN15.

1

Measure the voltage between the glove compartment
lamp C2LN15 pin 1, circuit CBP17N (BN/GN),

harness side and ground.

2

Is the voltage greater than 10 volts?
Yes

GO to E3

.

No

GO to E2

.

E2: CHECK THE GLOVE COMPARTMENT LAMP POWER CIRCUIT FOR OPEN CIRCUIT

Disconnect CJB C1BP02-C.

1

Measure the resistance between the glove
compartment lamp C2LN15 pin 1, circuit CBP17N

(BN/GN), harness side and the CJB C1BP02-C pin 67,
circuit CBP17R (BN/GN), harness side.

2

Is the resistance less than 1 ohm?
Yes

GO to Pinpoint Test

H.

No

REPAIR circuit CLN15 pin 1, circuit CBP17N (BN/GN)
or circuit CBP17R (BN/GN) as necessary. TEST the
system for normal operation.

E3: CHECK CIRCUIT GD138AU (BK/WH) FOR GROUND

Measure the resistance between the glove
compartment lamp C2LN15 pin 2, circuit GD138AU

(BK/WH), harness side and ground.

1

Is the resistance less than 1 ohm?
Yes

INSTALL a new glove compartment lamp. TEST the
system for normal operation.

No