LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1370 (Starting System) >> Diagnosis And Testing >> Starting System >> Component Tests >> Starter Motor - Motor Feed Circuit

Starter Motor - Motor Feed Circuit

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
    WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM .
  1. Make sure the battery is fully charged; refer to BATTERY, MOUNTING AND CABLES .
  2. Disconnect the inertia fuel shutoff (IFS) switch.
  3. Connect a remote starter switch between the starter motor solenoid S-terminal and the battery positive (+) terminal.
  4. Connect the 73 Digital Multimeter positive lead to the battery positive (+) post. Connect the negative lead to the starter motor solenoid M-terminal.
    Fig 1: Motor Feed Circuit Diagram
    G04584124Courtesy of FORD MOTOR CO.
  5. Engage the remote starter switch. Read and record the voltage. The voltage reading should be 0.5 volts or less.
  6. If the voltage reading is 0.5 volts or less, go to the STARTER MOTOR - MOTOR GROUND CIRCUIT .
  7. If the voltage reading is greater than 0.5 volts, indicating excessive resistance, move the 73 Digital Multimeter negative lead to starter motor solenoid B-terminal and repeat the test. If the voltage reading at the B-terminal is lower than 0.5 volts, the concern is either in the connections at the starter motor solenoid or in the starter motor solenoid contacts.
  8. Remove the cables from the starter motor solenoid B-, S- and M-terminals. Clean the cables and connections and reinstall the cables to the correct terminals. Repeat Steps  3 through  6. If the voltage drop reading is still greater than 0.5 volts when checked at the M-terminal or less than 0.5 volts when checked at the B-terminal, the concern is in the solenoid contacts. Install a new starter motor.
  9. If the voltage reading taken at starter motor solenoid B-terminal is still greater than 0.5 volts after cleaning the cables and connections at the solenoid, the concern is either in the positive (+) battery cable connection or in the positive battery cable itself.
    10. WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM .
  10. By moving the 73 Digital Multimeter negative lead toward the battery and checking each mechanical connection point, the excessive voltage drop can be located. When the high reading disappears, the last mechanical point that was checked is the concern. Repair or install a new connection as required.
scientia non olet · About LEMON Manuals