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Motor Feed Circuit

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Make all multimeter connections at the component terminal rather than the cable or wiring terminal.
  1. Disconnect the ignition coil connector from the ignition coil.
  2. Connect a remote starter switch between the starter solenoid S-terminal and the battery positive (+) post.
  3. Connect the positive (+) lead of the 73 Digital Multimeter to the battery positive (+) post. Connect the negative (-) lead of the multimeter to the starter solenoid M-terminal.
  4. Engage the remote starter switch. The multimeter reading should be 0.5 volt or less.
  5. If the voltage at the M-terminal is greater than 0.5 volt, move the multimeter negative (-) lead to the starter solenoid B-terminal and repeat the test.
  6. If the voltage reading at the B-terminal is less than 0.5 volt, the problem is either in the connections at the starter solenoid or the starter solenoid.
  7. Remove the wires at the starter solenoid B-, S-and M-terminals. Clean the connections and install the cables. Repeat Steps 1 through 5 above. If the reading is still higher than 0.5 volt at the M-terminal and 0.5 volt or lower at the B-terminal, the problem is in the starter solenoid. Install a new starter motor. Refer to STARTER MOTOR - 4.2L  or STARTER MOTOR - 4.6L, 5.4L .
  8. If the voltage taken at the starter solenoid B-terminal is greater than 0.5 volt, the problem is either the positive (+) battery cable connection or the positive (+) battery cable.
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