Starter Motor - Feed Circuit Test
WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
- 1.
Make sure the battery is fully charged. Refer to Battery, Mounting and Cables .
- 2.
Carry out a battery drain test. Refer to Battery, Mounting and Cables .
- 3.
Connect a remote starter switch between starter solenoid S-Terminal and the battery positive terminal.
- 4.
Connect the Digital Multimeter positive lead to the battery positive post. Connect the negative lead to the starter solenoid M-terminal.
- 6.
Engage the remote starter switch. Read and record the voltage. The voltage reading should be 0.5 volt or less.
- 7.
If the voltage reading is 0.5 volt or less, go to the Starter Motor - Ground Circuit Test .
- 8.
A voltage reading greater than 0.5 volt is an indication of excessive resistance in the starter connections, the positive battery cable or in the starter solenoid. Remove the cables from solenoid "B", "S", and M-terminals. Clean the cable connections and reinstall the cables to the correct terminals. Repeat Steps 3 through 7.
- 9.
If the voltage reading is still greater than 0.5 volt when checked at the M-terminal, move the Digital Multimeter negative lead to the starter solenoid B-Terminal and repeat step 6.
- 10.
If the voltage reading at the B-Terminal is lower than 0.5 volt, the concern is in the connections at the starter solenoid or in the solenoid contacts. Install a new starter motor. Refer to Starter Motor - 2.0L GTDI or Starter Motor - 3.5L GTDI or Starter Motor - 3.7L Ti-VCT .
- 11.
If the voltage reading taken at the solenoid B-Terminal is still greater than 0.5 volt 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.
- 12.
Clean the positive battery cable connections. If this does not solve the problem, install a new positive battery cable. Refer to Battery, Mounting and Cables .