Ford Galaxy / Ford S-MAX. Manual — part 429
Starting System - 1.8L Duratorq-TDCi
(74kW/100PS) - Lynx/1.8L Duratorq-
TDCi (92kW/125PS) - Lynx - Start Inhibit
Switch
S-MAX/Galaxy 2006.5 (02/2006-)
Removal and Installation
Removal
CAUTION: Make sure that the clutch pedal remains in the rest position.
Installation
CAUTION: Make sure that the clutch pedal remains in the rest position.
1.
1. To install, reverse the removal procedure.
Starting System - 2.0L Duratorq-TDCi
(85kW/115PS) - DW/2.0L Duratorq-TDCi
(100kW/136PS) - DW/2.0L Duratorq-
TDCi (103kW/140PS) - DW, Emission
Requirements: Stage IV - Starting System
S-MAX/Galaxy 2006.5 (02/2006-)
Diagnosis and Testing
General Equipment
Principles of Operation
The starter motor function is controlled by a starter relay. The starter relay is operated by
the ignition switch.
Battery voltage is supplied to the ignition switch from battery junction box (BJB) fuse F17.
When the ignition switch is turned to position III, battery voltage is supplied to the starter
relay coil. The starter relay coil circuit is completed by a ground circuit through the
powertrain control module (PCM). The ground circuit will only be available when the PCM
receives the correct signal from the passive anti-theft system (PATS).
When the starter relay coil is energized, the starter relay contacts close and battery voltage
is supplied to the starter motor solenoid circuit from BJB fuse F15. The starter motor
solenoid circuit is completed by a ground circuit through the starter motor casing.
The starter motor solenoid has two functions. The first is to supply the starter motor with a
high energy switch between the battery positive terminal and the starter motor windings.
The second is to act as a mechanical clutch between the starter motor drive gear and the
flywheel ring gear.
Battery voltage is supplied to the starter motor solenoid contact through a fused wire. The
ground circuit is completed using the starter motor casing and the engine/transmission
ground wire.
Inspection and Verification
1. 1. Verify the customer concern.
2. 2. Visually inspect for obvious signs of mechanical or electrical damage.
3. 3. If an obvious cause for an observed or reported concern is found, correct the cause
(if possible) before proceeding to the next step
4. 4. If the cause is not visually evident, verify the symptom and refer to the Symptom
Chart.
Visual Inspection Chart
Symptom Chart
Worldwide Diagnostic System (WDS)
Mechanical
Electrical
Starter motor
Fuse(s)
Wiring harness(es)
Electrical connector(s)
Relay(s)
Switch(es)
Battery
Symptom
Possible
Sources
Action
The engine does
Battery
*
REFER to: Charging System (414-00, Diagnosis and
*
not crank and the
relay does not click
Testing).
Circuit(s)
Starter
relay
Ignition
switch
PCM
BJB
*
*
*
*
*
GO to Pinpoint Test
A.
*
PATS
*
REFER to: Anti-Theft - Passive (419-01B, Diagnosis and
Testing).
*
The engine does
not crank but the
relay clicks
Battery
*
REFER to: Charging System (414-00, Diagnosis and
Testing).
*
Circuit(s)
Starter
relay
Starter
motor
*
*
*
GO to Pinpoint Test
B.
*
The engine cranks
slowly
Battery
*
REFER to: Charging System (414-00, Diagnosis and
Testing).
*
Battery
cable
Starter
motor
*
*
GO to Pinpoint Test
C.
*
Unusual starter
motor noise
Starter
motor
*
INSPECT the starter motor for alignment or cracked
casing. Make sure the mounting bolts are tightened. If
necessary, INSTALL a new starter motor.
REFER to:
Starter Motor
(303-06A Starting System - 2.0L
Duratec-HE (107kW/145PS) - MI4/2.0L Duratec-HE Flex
Fuel (107kW/145PS) - MI4/2.3L Duratec-HE
(118kW/160PS) - MI4, Removal and Installation) /
Starter Motor (303-06B Starting System - 2.5L Duratec-ST
(VI5), Removal and Installation) /
Starter Motor (303-06C Starting System - 1.8L Duratorq-
TDCi (Kent) Diesel, Removal and Installation) /
Starter Motor (303-06D Starting System - 2.0L Duratorq-
TDCi (DW) Diesel, Removal and Installation).
TEST the system for normal operation.
*
Flywheel
ring gear
*
CHECK the flywheel ring gear. INSTALL a new flywheel
ring gear as necessary.
*
The starter motor
spins but the
engine does not
crank
Starter
motor
*
REMOVE the starter motor. INSPECT the starter motor
gear for damage. INSTALL a new starter motor as
necessary.
REFER to:
Starter Motor
(303-06A Starting System - 2.0L
Duratec-HE (107kW/145PS) - MI4/2.0L Duratec-HE Flex
Fuel (107kW/145PS) - MI4/2.3L Duratec-HE
(118kW/160PS) - MI4, Removal and Installation) /
Starter Motor (303-06B Starting System - 2.5L Duratec-ST
(VI5), Removal and Installation) /
Starter Motor (303-06C Starting System - 1.8L Duratorq-
TDCi (Kent) Diesel, Removal and Installation) /
Starter Motor (303-06D Starting System - 2.0L Duratorq-
TDCi (DW) Diesel, Removal and Installation).
TEST the system for normal operation.
*
Flywheel
ring gear
*
INSPECT the flywheel ring gear for missing teeth. CHECK
the starter motor for correct mounting. If the concern
persists, INSTALL a new starter motor.
REFER to:
Starter Motor
(303-06A Starting System - 2.0L
Duratec-HE (107kW/145PS) - MI4/2.0L Duratec-HE Flex
Fuel (107kW/145PS) - MI4/2.3L Duratec-HE
*
Pinpoint Tests
NOTE: Use a digital multimeter for all electrical measurements.
(118kW/160PS) - MI4, Removal and Installation) /
Starter Motor (303-06B Starting System - 2.5L Duratec-ST
(VI5), Removal and Installation) /
Starter Motor (303-06C Starting System - 1.8L Duratorq-
TDCi (Kent) Diesel, Removal and Installation) /
Starter Motor (303-06D Starting System - 2.0L Duratorq-
TDCi (DW) Diesel, Removal and Installation).
TEST the system for normal operation.
PINPOINT TEST A : THE ENGINE DOES NOT CRANK AND THE RELAY DOES
NOT CLICK
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
A1: CHECK THE STARTER RELAY COIL FOR VOLTAGE
Disconnect Starter Relay R1.
1
Ignition switch in position III.
2
Measure the voltage between the BJB starter relay
R1 connector pin 1, circuit CDC35D (BU/WH),
harness side and ground.
3
Is the voltage greater than 10 volts?
Yes
GO to A3
.
No
GO to A2
.
A2: CHECK CIRCUIT CDC35D (BU/WH) AND CDC35F (BU/WH) FOR CONTINUITY
Ignition switch in position 0.
1
Disconnect Ignition Switch C2DC32.
2
Measure the resistance between the BJB starter relay
R1 connector pin 1, circuit CDC35D (BU/WH),
harness side and the ignition switch C2DC32 pin 7,
circuit CDC35F (BU/WH), harness side.
3
Is the resistance less than 1 ohm?
Yes
INSTALL a new ignition switch. TEST the system for
correct operation.
No
REPAIR circuit CDC35D (BU/WH) or circuit CDC35F
(BU/WH) as necessary. TEST the system for normal
operation.
A3: CHECK THE STARTER RELAY COIL FOR GROUND
Measure the resistance between the BJB starter relay
R1 connector pin 2, circuit CDC12A (YE), and
ground.
1
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