Change 1 2-333
1. Set the voltmeter to an ohms scale of about
2. Connect the RED and BLACK leads to the
connections stated in the question.
3. Be sure to read the correct scale. Less than 5
ohms indicates continuity. For an open circuit,
the meter should peg full scale (needle all the
way to the left).
Replace harness or lamp, refer to (para. 4-17).
STE/ICE-R TEST 91
1. Connect RED clip and BLACK clip to the terminations
indicated in the question. RED to the first, BLACK to the
2. Start Test 91, 0-4500 ohms.
3. Displayed reading is in ohms. Less than 5 ohms is
continuity. If the resistance is over 4500 ohms, STE/ICE
1. Set the voltmeter to a DC volts scale of at least 40
2. Connect the RED lead to positive and the BLACK lead
3. Be sure to read the correct scale.
0-45 DC VOLTS
STE/ICE-R TEST 89
1. Connect RED clip to the indicated test point,
BLACK clip to negative or ground.
2. Start Test 89, DC volts.
3. Displayed reading is in volts.
It is important to connect the leads as indicated because you
are checking continuity across a diode. The lamp will glow
dimly because you are supplying a small amount of power
thru STE/ICE-R. You may have to shade the lamp with your
hand to see if it glows.
A multimeter may not supply enough power to light the lamp.
In this case look for a much greater resistance when
measuring with the leads connected in one direction than
when they are connected in reverse.
There is battery voltage at the PCB/distribution box at all times.
Failure to disconnect battery cable will result in damage to
equipment or injury to personnel.
Disconnect negative battery cable before disconnecting
and reconnecting protective control box/distribution box