Ford Galaxy / Ford S-MAX. Manual — part 726

GO to H3

.

No

REPAIR the circuit(s) in question. TEST the system
for normal operation.

H3: CHECK THE INOPERATIVE TWEETER SPEAKER(S) CIRCUIT FOR SHORT TO
GROUND

Measure the resistance between the following rear
tweeter speaker pins, harness side and ground:

Left-hand side C7ME39 pin 1, circuit VME39A
(GN/BN).
Right-hand side C8ME4D pin 1, circuit VME40A
(BN/WH).

1

Is the resistance greater than 10,000 ohms (open
circuit)?
Yes

INSTALL a new tweeter speaker. TEST the system for
normal operation.

No

REPAIR the circuit(s) in question. TEST the system
for normal operation.

PINPOINT TEST I : THE AUDIO CONTROL SWITCH IS INOPERATIVE/DOES
NOT OPERATE CORRECTLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

I1: CHECK THE AUDIO UNIT OPERATES CORRECTLY USING THE AUDIO UNIT
CONTROLS

Operate the audio unit using the audio unit controls.

1

Does the audio unit operate correctly using the audio unit
controls?
Yes

GO to I2

.

No

INSTALL a new audio unit.
REFER to: Audio Unit (415-01 Information and
Entertainment System, Removal and Installation).
TEST the system for normal operation.

I2: CHECK CIRCUIT VME14A (GY/YE) FOR OPEN

Disconnect Audio Unit C2ME03B.

1

Disconnect Clockspring C2LS41.

2

Measure the resistance between the audio unit
C2ME03B pin 6, circuit VME14A (GY/YE) harness side

and the clockspring C2LS41 pin 11, circuit VME14A
(GY/YE) harness side.

3

Is the resistance less than 1 ohm?
Yes

GO to I3

.

No

REPAIR the circuit. TEST the system for normal

operation.

I3: CHECK CIRCUIT RME24A (BU/WH) FOR OPEN

Measure the resistance between the audio unit
C2ME03B pin 8, circuit RME24A (BU/WH) harness

side and the clockspring CME14 pin 2, circuit RME24B
(BU/WH) harness side.

1

Is the resistance less than 1 ohm?
Yes

INSTALL a new audio control switch. TEST the system
for normal operation. If the concern persists,
INSTALL a new audio unit.
REFER to: Audio Unit (415-01 Information and
Entertainment System, Removal and Installation).

No

REPAIR the circuit. TEST the system for normal
operation.

PINPOINT TEST J : THE CD CHANGER IS INOPERATIVE/DOES NOT
OPERATE CORRECTLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

J1: CHECK THE CD CHANGER FOR VOLTAGE

Disconnect CD changer C2ME27.

1

Measure the voltage between the CD changer
C2ME27 pin 1, circuit SBR05AWA (GY/RD), harness

side and ground.

2

Is the voltage greater than 10 volts?
Yes

GO to J2

.

No

REPAIR circuit SBR05AWA (GY/RD). TEST the system
for normal operation.

J2: CHECK THE CD CHANGER FOR GROUND

Measure the resistance between the CD changer
C2ME27 pin 6, circuit GD135M (BK/GY), harness side

and ground.

1

Is the resistance less than 1 ohm?
Yes

GO to J3

.

No

REPAIR the circuit. TEST the system for normal
operation.

J3: CHECK THE CD CHANGER TO AUDIO UNIT CIRCUIT(S) FOR OPEN

Disconnect Audio Unit C2ME03B.

1

Measure the resistance between the following CD
changer circuits and the audio unit circuit(s):

CD changer C2ME27 pin 3, circuit VME15B
(GN/BK), harness side and audio unit C2ME03B pin
3, circuit VME15A (GN/BK), harness side.

CD changer C2ME27 pin 8, circuit RME15B
(VT/GY), harness side and audio unit C2ME03B pin
9, circuit RME15A (VT/GY), harness side.

CD changer C2ME27 pin 4, circuit VME16B
(GY/RD), harness side and audio unit C2ME03B pin
4, circuit RME16A (GY/RD), harness side.

CD changer C2ME27 pin 9, circuit RME16B
(YE/GY), harness side and audio unit C2ME03B pin
10, circuit RME16A (YE/GY), harness side.

2

Are the resistances less than 1 ohm?
Yes

INSTALL a new CD changer. TEST the system for
normal operation.

No

REPAIR the circuits as necessary. TEST the system
for normal operation. If the concern persists,
INSTALL a new audio unit.

PINPOINT TEST K : THE AUXILIARY INPUT DEVICE IS
INOPERATIVE/DOES NOT OPERATE CORRECTLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

K1: CHECK THE OPERATION OF THE AUXILIARY INPUT DEVICE

Operate the auxiliary input device outside of the
vehicle.

1

Does the auxiliary input device operate outside of the
vehicle?
Yes

GO to K3

.

No

REFER to the auxiliary input device Owner Guide.

K2: CHECK THE AUXILIARY INPUT DEVICE CONNECTOR

Check the auxiliary input device connector for signs
of damage or debris.

1

Is the auxiliary input device connector free of damage
and debris?
Yes

GO to K3

.

No

INSTALL a new auxiliary input device connector. TEST
the system for normal operation.

K3: CHECK CIRCUIT VME37A (BU/RD) FOR OPEN

Disconnect Audio Unit C2ME03C.

1

Measure the resistance between the audio unit
C2ME03C pin 5, circuit VME37A (BU/RD), harness

side and auxiliary input device C2ME37 pin 4, circuit

2

VME37A (BU/RD), harness side.

Is the resistance less than 1 ohm?
Yes

GO to K4

.

No

REPAIR circuit VME37A (BU/RD). TEST the system for
normal operation.

K4: CHECK CIRCUIT VME38A (BN/RD) FOR OPEN

Measure the resistance between the audio unit
C2ME03C pin 11, circuit VME38A (BN/RD), harness

side and auxiliary input device C2ME37 pin 1, circuit
VME38A (BN/RD), harness side.

1

Is the resistance less than 1 ohm?
Yes

GO to K5

.

No

REPAIR circuit VME38A (BN/RD). TEST the system for
normal operation.

K5: CHECK CIRCUIT DME37G (OG/GN) FOR GROUND

Measure the resistance between the audio unit
C2ME03C pin 6, circuit DME37G (OG/GN), harness

side and ground.

1

Is the resistance less than 1 ohm?
Yes

INSTALL a new audio unit. TEST the system for
normal operation.

No

REPAIR circuit DME37G (OG/GN). TEST the system
for normal operation.

PINPOINT TEST L : THE DIGITAL VERSATILE DISC (DVD) PLAYER IS
INOPERATIVE/DOES NOT OPERATE CORRECTLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

L1: CHECK THE DVD PLAYER FOR POWER

Disconnect DVD Player C2MR-A.

1

Measure the voltage between the DVD player C2MR-A
pin 4, circuit C_SBR05D (GY/RD), harness side and

2