Ford Galaxy / Ford S-MAX. Manual — part 644

Measure the resistance between the EATC module,
connector C2H101-A, pin 9, circuit CH212A (BU/OG),

wiring harness side and the EATC module, connector
C2H101-A, pin 10, circuit CH213A (BN/GN), wiring
harness side.

2

Measure the resistance between the EATC module,
connector C2H101-A, pin 9, circuit CH212A (BU/OG),

wiring harness side and the EATC module, connector
C2H101-A, pin 22, circuit CH214A (GY/VT), wiring
harness side.

3

Measure the resistance between the EATC module,
connector C2H101-A, pin 9, circuit CH212A (BU/OG),

wiring harness side and the EATC module, connector
C2H101-A, pin 23, circuit CH215A (VT), wiring
harness side.

4

Measure the resistance between the EATC module,
connector C2H101-A, pin 25, circuit CH211A (YE),

wiring harness side and the EATC module, connector
C2H101-A, pin 10, circuit CH213A (BN/GN), wiring
harness side.

5

Measure the resistance between the EATC module,
connector C2H101-A, pin 25, circuit CH211A (YE),

wiring harness side and the EATC module, connector
C2H101-A, pin 22, circuit CH214A (GY/VT), wiring
harness side.

6

Measure the resistance between the EATC module,
connector C2H101-A, pin 25, circuit CH211A (YE),

wiring harness side and the EATC module, connector
C2H101-A, pin 23, circuit CH215A (VT), wiring
harness side.

7

Measure the resistance between the EATC module,
connector C2H101-A, pin 10, circuit CH213A

(BN/GN), wiring harness side and the EATC module,
connector C2H101-A, pin 22, circuit CH214A
(GY/VT), wiring harness side.

8

Measure the resistance between the EATC module,
connector C2H101-A, pin 10, circuit CH213A

(BN/GN), wiring harness side and the EATC module,
connector C2H101-A, pin 23, circuit CH215A (VT),
wiring harness side.

9

Measure the resistance between the EATC module,
connector C2H101-A, pin 22, circuit CH214A

(GY/VT), wiring harness side and the EATC module,
connector C2H101-A, pin 23, circuit CH215A (VT),
wiring harness side.

10

Is a resistance of more than 10,000 Ohms measured in
all of the measurements?
Yes

RENEW the right-hand temperature control flap
actuator CHECK the operation of the system.

No

LOCATE and REPAIR the short between the relevant
circuits between the right-hand temperature control
flap actuator and the EATC module using the Wiring
Diagrams. CHECK the operation of the system.

PINPOINT TEST I : MALFUNCTION OF LEFT-HAND TEMPERATURE
CONTROL FLAP - VEHICLES WITH ELECTRONIC AUTOMATIC TEMPERATURE
CONTROL (EATC)

NOTE: Ensure that the left-hand temperature control flap is mechanically OK.

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

I1: CHECK THE VOLTAGE AT THE LEFT-HAND TEMPERATURE CONTROL FLAP
ACTUATOR

Ignition switch in position 0.

1

Disconnect Connector C5H237 from the left-hand
temperature control flap actuator.

2

Ignition switch in position II.

3

Measure the voltage between the left-hand
temperature control flap actuator, connector

C5H237, pin 2, circuit CH237A (VT/GY), wiring
harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to I3

.

No

GO to I2

.

I2: CHECK THE CIRCUIT BETWEEN THE LEFT-HAND TEMPERATURE CONTROL FLAP
ACTUATOR AND THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC)
MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C2H101-A from the EATC
module.

2

Measure the resistance between the EATC module,
connector C2H101-A, pin 12, circuit CH237A

(VT/GY), wiring harness side and the left-hand
temperature control flap actuator, connector
C5H237, pin 2, circuit CH237A (VT/GY), wiring
harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

CHECK the EATC module, if necessary INSTALL a
new one. CHECK the operation of the system.

No

LOCATE and REPAIR the break in circuit CH237A
(VT/GY) between the EATC module and the left-hand
temperature control flap actuator with the aid of the
Wiring Diagrams. CHECK the operation of the
system.

I3: CHECK THE CIRCUITS BETWEEN THE LEFT-HAND TEMPERATURE CONTROL FLAP
ACTUATOR AND THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC)
MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Connector C2H101-A from the EATC
module.

2

Measure the resistance between the EATC module,
connector C2H101-A, pin 3, circuit CH238A (YE/OG),

wiring harness side and the left-hand temperature
control flap actuator, connector C5H237, pin 1,
circuit CH238A (YE/OG), wiring harness side.

3

Measure the resistance between the EATC module,
connector C2H101-A, pin 4, circuit CH239A

(BU/WH), wiring harness side and the left-hand
temperature control flap actuator, connector
C5H237, pin 3, circuit CH239A (BU/WH), wiring
harness side.

4

Measure the resistance between the EATC module,
connector C2H101-A, pin 16, circuit CH240A

(GN/WH), wiring harness side and the left-hand
temperature control flap actuator, connector
C5H237, pin 4, circuit CH240A (GN/WH), wiring
harness side.

5

Measure the resistance between the EATC module,
connector C2H101-A, pin 17, circuit CH241A

(GY/BN), wiring harness side and the left-hand
temperature control flap actuator, connector
C5H237, pin 6, circuit CH241A (GY/BN), wiring
harness side.

6

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

GO to I4

.

No

LOCATE and REPAIR the break in the relevant circuit
between the left-hand temperature control flap
actuator and the EATC module using the Wiring
Diagrams. CHECK the operation of the system.

I4: CHECK THE CIRCUITS BETWEEN THE LEFT-HAND TEMPERATURE CONTROL FLAP
ACTUATOR AND THE EATC MODULE FOR SHORT TO VOLTAGE

Ignition switch in position II.

1

Measure the voltage between the EATC module,
connector C2H101-A, pin 3, circuit CH238A (YE/OG),

wiring harness side and ground.

2