Ford Galaxy / Ford S-MAX. Manual — part 828

Is battery voltage measured in all cases?
Yes

GO to AG32

.

No

- If no voltage is measured during a
measurement:LOCATE and REPAIR the break in
the relevant circuit between the PCM and
soldered connection SP482 using the Wiring
Diagrams. CHECK the operation of the system.
- If battery voltage is not measured during all
measurements:

GO to AG31

.

AG31: CHECK FOR OPEN CIRCUIT BETWEEN THE PCM AND THE EJB

Disconnect Connector C1BB03-A from the EJB.

1

Measure the resistance between the PCM,
connector C1E108-E, pin K1, circuit CBB08D

(GY/YE), wiring harness side and the RJB,
connector C1BB03-A, pin 16, circuit CBB08A
(GY/YE), wiring harness side.

2

Is a resistance of less than 2 Ohms registered?
Yes

CHECK and if necessary RENEW the EJB. CHECK
the operation of the system.

No

LOCATE and RECTIFY the break in circuit CBB08A
(GY/YE) between soldered connection SP482 and
the EJB with the aid of the Wiring Diagrams.
CHECK the operation of the system.

AG32: CHECK THE GROUND CONNECTION OF THE PCM

Measure the resistance between the PCM,
connector C1E108-D, pin G4, circuit GD120P

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

1

Measure the resistance between the PCM,
connector C1E108-D, pin H4, circuit GD120Y

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

2

Measure the resistance between the PCM,

3

connector C1E108-C, pin L4, circuit GD120W
(BK/GN), wiring harness side and ground.

Measure the resistance between the PCM,
connector C1E108-C, pin M4, circuit GD120R

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

4

Measure the resistance between the PCM,
connector C1E108-E, pin J2, circuit GD120AC

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

5

Measure the resistance between the PCM,
connector C1E108-E, pin K4, circuit GD120N

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

6

Is a resistance of less than 2 Ohms measured in all of
the cases?
Yes

GO to AG33

.

No

- If a resistance of more than 2 Ohms is
measured in one of the measurements:LOCATE
and REPAIR the break in the relevant circuit
between the PCM and soldered connection SP301
using the Wiring Diagrams. CHECK the operation
of the system.
- If a resistance of more than 2 Ohms is
measured in all of the measurements:LOCATE
and RECTIFY the open circuit in the
corresponding circuit between soldered
connection SP301 and ground connection
G1D108D with the aid of the Wiring Diagrams.
CHECK the operation of the system.

AG33: CHECK FOR OPEN CIRCUIT BETWEEN THE PCM AND THE DATA LINK
CONNECTOR (DLC)

CAUTION: The following measurement must only be performed using the Ford

approved diagnostic tool digital multimeter. Failure to observe this instruction can lead to
damage.

Measure the resistance between the PCM,
connector C1E108-D, pin A4, circuit VDB04E

(WH/BU), wiring harness side and the DLC,
connector C3DB04, pin 6, circuit VDB04L
(WH/BU), wiring harness side.

1

Is a resistance of less than 2 Ohms registered?
Yes

GO to AG34

.

No

LOCATE and REPAIR the open circuit between the
PCM and the DLC using the Wiring Diagrams.
CHECK the operation of the system.

AG34: CHECK THE CIRCUIT BETWEEN THE PCM AND THE DLC FOR OPEN CIRCUIT

CAUTION: The following measurement must only be performed using the Ford

approved diagnostic tool digital multimeter. Failure to observe this instruction can lead to
damage.

Measure the resistance between the PCM,
connector C1E108-D, pin A3, circuit VDB05L

(WH), wiring harness side and the DLC,
connector C3DB04, pin 14, circuit VDB05Z (WH),
wiring harness side.

1

Is a resistance of less than 2 Ohms registered?
Yes

CHECK the PCM and RENEW if necessary. CHECK
the operation of the system.

No

LOCATE and REPAIR the open in the respective
circuit between the PCM and DLC by using the
wiring diagrams. CHECK the operation of the
system.

AG35: CHECK THE VOLTAGE AT THE PCM

Disconnect Connector C1E104-E from the PCM.

1

Ignition switch in position II.

2

Measure the voltage between the PCM, connector
C1E108-E, pin G2, circuit CBB42A (GN), wiring

harness side and ground.

3

Does the meter display battery voltage?
Yes

GO to AG37

.

No

GO to AG36

.

AG36: CHECK FOR OPEN CIRCUIT BETWEEN THE PCM AND THE EJB

Ignition switch in position 0.

1

Disconnect Connector C1BB01-A from the EJB.

2

Measure the resistance between the PCM,
connector C1E104-E, pin G2, circuit CBB42A

(GN), wiring harness side and the EJB, connector
C1BB01-A, pin 99, circuit CBB42B (GN), wiring
harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

CHECK and if necessary RENEW the EJB. CHECK
the operation of the system.

No

LOCATE and REPAIR the break in the circuit
between the PCM and the EJB with the aid of the
Wiring Diagrams. CHECK the operation of the
system.

AG37: CHECK THE VOLTAGE AT THE PCM

Ignition switch in position 0.

1

Use a fused test lead (1 A) at the PCM to bridge
connector C1E104-ED, pin G1, circuit CE302E

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

2

Measure the voltage between the PCM, connector
C1E104-E, pin M2, circuit CBB08N (GY/YE),

wiring harness side and ground.

3

Measure the voltage between the PCM, connector
C1E104-E, pin M3, circuit CBB08L (GY/YE),

wiring harness side and ground.

4

Is battery voltage measured in all cases?
Yes

GO to AG38

.

No

LOCATE and REPAIR the break in the relevant