Ford ST1137-A - Manual
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Table of Contents:
- Page 2 – DTC
- Page 3 – Starting System; Symptom Chart; GO to Pinpoint Test A; Pinpoint Tests
- Page 4 – Possible Causes; voltage is supplied to the starter motor through; Yes
- Page 5 – Test Step; Measure the voltage between starter motor relay; GO to; Is the voltage greater than 10 volts?; to
- Page 6 – Is the resistance less than 5 ohms?
- Page 8 – Measure the voltage between ignition switch; system for normal operation.; INSTALL a new ignition switch. REFER to
- Page 9 – Measure the resistance between CPP switch
- Page 11 – Measure the resistance between PCM; Pinpoint Test B: The Engine Does Not Crank
- Page 12 – PINPOINT TEST B: THE ENGINE DOES NOT CRANK AND THE RELAY DOES CLICK; Measure the voltage between starter relay
- Page 13 – Refer to Wiring Diagrams Cell 149 for component testing.; Pinpoint Test C: The Engine Cranks Slowly
- Page 14 – PINPOINT TEST C: THE ENGINE CRANKS SLOWLY; CHECK MOTOR GROUND CIRCUIT; Carry out the Motor Ground Circuit test. Refer to Component; Tests in this section.; Pinpoint Test D: Unusual Starter Noise
- Page 15 – PINPOINT TEST D: UNUSUAL STARTER NOISE; Component Tests; Starter Motor — Load Test
- Page 16 – Starter Drive Test
- Page 17 – WARNING: Make sure that the starter
303-06-1
303-06-1
Starting System
DIAGNOSIS AND TESTING
Inspection and Verification
Starting System
Refer to Wiring Diagrams Cell 20, Starting System
WARNING: When servicing the starter
for schematic and connector information.
motor or carrying out other underhood work in
the vicinity of the starter motor, be aware that
Special Tool(s)
the heavy gauge battery input lead at the starter
73 Digital Multimeter
solenoid is ‘‘electrically hot’’ at all times. A
105-R0051 or equivalent
protective cap or boot is provided over the
terminal of this lead and must be installed after
servicing. Failure to follow these instructions may
result in personal injury.
WARNING: When working in the area of
the starter motor, be careful to avoid touching
SABRE Premium Battery and
hot exhaust components. Failure to follow these
Electrical System Tester
instructions may result in personal injury.
010-00730 or equivalent
NOTE: When working on the starter system, make
sure the anti-theft system is deactivated, if equipped.
1.
Verify the customer concern by operating the
starting system.
Worldwide Diagnostic System
2.
Visually inspect for obvious signs of
(WDS)
mechanical and electrical damage. Refer to the
Vehicle Communication Module
following chart:
(VCM) with appropriate
adapters, or equivalent
Visual Inspection Chart
diagnostic tool
Mechanical
Electrical
•
Starter motor
•
Battery
Principles of Operation
•
Brackets
•
Smart junction box
(SJB) fuse:
The starting system is electronically controlled by
— 21 (10A)
the passive anti-theft system (PATS). The PATS
•
Bussed electrical center
recognizes the correct electronically coded ignition
(BEC) fuse:
key and signals the instrument cluster to provide a
— 3 (30A)
•
Anti-theft system
ground for the starter relay. The energized relay
•
Damaged wiring harness
provides voltage to the starter solenoid with the key
•
Loose or corroded
in the START position, thereby allowing the starter
connections
motor to activate.
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.
If the cause is not visually evident, connect the
diagnostic tool to the data link connector (DLC)
and select the vehicle to be tested from the
diagnostic tool menu. If the diagnostic tool does
not communicate with the vehicle:
•
check that the program card is correctly
installed.
•
check the connections to the vehicle.
•
check the ignition switch position.
Copyright
2004, Ford Motor Company
Last updated: 12/8/2004
2005 Mustang, 12/2004
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Summary
303-06-2 303-06-2 Starting System DIAGNOSIS AND TESTING (Continued) 5. If the diagnostic tool still does not communicate • System passed, retrieve and record the with the vehicle, refer to the diagnostic tool continuous diagnostic trouble codes (DTCs), operating manual. erase the continuous DTCs and...
303-06-3 303-06-3 Starting System DIAGNOSIS AND TESTING (Continued) Symptom Chart Symptom Chart Condition Possible Sources Action • The engine does not crank • Battery • GO to Pinpoint Test A . and the relay does not click • Fuse • Starter relay • Ignition switch • Digital transmission range(TR) sen...
303-06-4 303-06-4 Starting System DIAGNOSIS AND TESTING (Continued) Possible Causes When the starter relay is energized, voltage suppliedto the relay switch is sent to the starter motor • Fuse(s) solenoid through circuit 113 (YE/LB). Battery • An open in battery voltage feed BEC, 2037 (RD) voltage i...
