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Ford ST1137-A - page 1
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 ga ...
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Ford ST1137-A - page 2
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 carry out the self-test diagnostics for the GEM ...
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Ford ST1137-A - page 3
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) sensor (automatic transmission only) ? ...
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Ford ST1137-A - page 4
303-06-4 303-06-4 Starting System DIAGNOSIS AND TESTING (Continued) Possible Causes When the starter relay is energized, voltage supplied to 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 is supplied to the starter motor through or 11 ...
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Ford ST1137-A - page 5
303-06-5 303-06-5 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A3 CHECK CIRCUIT 33 (WH/PK) (CIRCUIT 32 [RD/LB] MANUAL TRANSMISSION ONLY) FOR VOLTAGE (Continued) • Measure the voltage between starter motor relay C1017-85 , cir ...
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Ford ST1137-A - page 6
303-06-6 303-06-6 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A4 CHECK CIRCUIT 32 (RD/LB) FOR VOLTAGE AT THE DIGITAL TR SENSOR (AUTOMATIC TRANSMISSION ONLY) (Continued) • Measure the voltage between digital TR sensor C167-10 ...
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Ford ST1137-A - page 7
303-06-7 303-06-7 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A6 CHECK DIGITAL TR SENSOR ADJUSTMENT • Carry out the digital TR sensor adjustment. Refer to Section Yes 307-01. INSTALL a new digital TR sensor. TEST • Is the ...
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Ford ST1137-A - page 8
303-06-8 303-06-8 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A9 CHECK CIRCUIT 1050 (LG/PK) FOR VOLTAGE (Continued) • Measure the voltage between ignition switch C250-4 , circuit 1050 (LG/PK) and ground. Yes GO to A10 . No R ...
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Ford ST1137-A - page 9
303-06-9 303-06-9 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A11 CHECK CIRCUIT 32 (RD/LB) FOR AN OPEN (Continued) • Measure the resistance between CPP switch C257-2 , circuit 32 (RD/LB) and starter motor relay C1017-85 , ci ...
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Ford ST1137-A - page 10
303-06-10 303-06-10 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A12 CHECK THE STARTER MOTOR RELAY GROUND CIRCUIT FOR AN OPEN (Continued) • Measure the voltage between starter motor relay C1017-86 , circuit 1419 (LG/YE) and s ...
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Ford ST1137-A - page 11
303-06-11 303-06-11 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued) Test Step Result / Action to Take A13 CHECK CIRCUIT 1419 (LG/YE) FOR AN OPEN (Continued) • Measure the resistance between PCM C175B-2 , circuit 1419 (LG/YE) and starter relay C1017-86 , circuit ...
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Ford ST1137-A - page 12
303-06-12 303-06-12 Starting System DIAGNOSIS AND TESTING (Continued) • Digital transmission range (TR) switch • Ignition switch • Starter motor relay • Clutch pedal position (CPP) switch PINPOINT TEST B: THE ENGINE DOES NOT CRANK AND THE RELAY DOES CLICK Test Step Result / Action to Take B1 CHECK THE VOLTAGE TO THE STARTER RELAY • Measur ...
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Ford ST1137-A - page 13
303-06-13 303-06-13 Starting System DIAGNOSIS AND TESTING (Continued) PINPOINT TEST B: THE ENGINE DOES NOT CRANK AND THE RELAY DOES CLICK (Continued) Test Step Result / Action to Take B2 CHECK THE VOLTAGE TO THE STARTER MOTOR SOLENOID • Measure the voltage between starter motor solenoid positive terminal and ground. Yes GO to B3 . No REPAIR circu ...
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Ford ST1137-A - page 14
303-06-14 303-06-14 Starting System DIAGNOSIS AND TESTING (Continued) Possible Causes For manual transmission equipped vehicles, voltage from the SJB is supplied to the clutch pedal position • Fuse(s) switch (CPP) through circuit 32 (RD/LB). When the • Circuit 2037 (RD) clutch pedal is depressed, voltage is supplied from • Ground circuit the ...
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Ford ST1137-A - page 15
303-06-15 303-06-15 Starting System DIAGNOSIS AND TESTING (Continued) Possible Causes For manual transmission equipped vehicles, voltage from the SJB is supplied to the clutch pedal position • Starter motor mounting switch (CPP) through circuit 32 (RD/LB). When the • Starter motor mounting bolts clutch pedal is depressed, voltage is supplied fr ...
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Ford ST1137-A - page 16
303-06-16 303-06-16 Starting System DIAGNOSIS AND TESTING (Continued) 3. Connect the positive (+) lead of the 73 Digital 4. Engage the remote starter switch and read the Multimeter to the battery positive (+) post. voltage. The reading should be 0.2 volt or less. Connect the negative (-) lead of the multimeter 5. If the voltage drop is greater than ...
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Ford ST1137-A - page 17
303-06-17 303-06-17 Starting System DIAGNOSIS AND TESTING (Continued) 2. Engage the remote starter switch. 1. WARNING: Make sure that the starter motor is securely mounted on a bench 3. The starter motor should eject the starter drive because the starter motor may move or jump and run smoothly. If the starter motor does not when it is energized. ru ...
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