Digital Multimeter, Part Number 3377161
Set the digital multimeter, Part Number 3377161, to measure DC volts.
Connect the multi meter positive ( +) lead to the starter solenoid positive cable terminal and the negative (-) lead
to a chassis or engine ground location.
The multimeter must show voltage with the keys witch in the OFF position to be normal.
If the multimeter does not indicate voltage, check the cable connecting the starter solenoid and battery tor
breaks. Also, check for loose or corroded connections.
If the multimeter indicates voltage but the starter will not operate, check the wire connecting the starter solenoid to
the keys witch for breaks; and also check for loose or corroded connections.
In addition, be sure to check for:
• Fuses
• Application engine shutoff systems.
If the wire connecting the starter solenoid and keys witch is not loose or damaged and the starter will not operate:
• Remove the cable connecting the starter and starter solenoid from the solenoid terminal.
• Connect the multimeter positive ( +) lead to the solenoid “S” or switch terminal and the negative(-) lead
to the chassis or an engine ground location.
• Turn the keys witch to the START position.
• If the multimeter indicates voltage and the starter will not operate, the starter solenoid is malfunctioning and
must be replaced. Refer to Procedure 013-020 in Section 13.
If the multi meter does not indicate system voltage:
• Check the wire connecting the starter solenoid “S” or switch terminal to the magnetic switch for breaks, and
for loose or corroded connections.
• Check that there are no blown fuses.
• Check voltage to the magnetic switch. Refer to Procedure 013-017 in Section 13.
• Check voltage to the keys witch. Refer to Procedure 013-030 in Section 13.
• Check application of the safety shut-off systems.
If the wire connecting the starter solenoid to the magnetic switch is not loose or damaged and the starter will not
operate:
• Check the cable connecting the starter solenoid to the starter motor for breaks, and for loose or corroded
connections.
• Check the cable connecting the starter motor to the battery for breaks, and for loose or corroded
connections.
• If the cables are not loose or damaged, the starter motor is defective and must be replaced. Refer to
Procedure 013-020 in Section 13.
