Use and Care Manual

Tsurumi’s Operation, Service and Repair Manual
Troubleshooting
41
Table 8: Idle Control Unit – Circuit Parameters
Circuit Tester Power Source Apply Black (Negative) Probe of the Circuit Tester
1 2 3 4 5
Apply Red
(Positive) Probe of
Circuit Tester
1 - - -
∞ 250 kΩ 250 kΩ 250 kΩ
2
∞
- - -
∞ ∞ ∞
3
250 kΩ ∞
- - -
250 kΩ 75 kΩ
4
250 kΩ ∞ 250 kΩ
- - -
75 kΩ
5
8.5 kΩ ∞ 7.8 kΩ 7.8 kΩ
- - -
Table 9: Diode Rectifier Checking
Using Analog Circuit Tester
Apply Black (Negative) Probe of the Circuit Tester
Brown Brown Orange Brown/White
Apply Red (Positive) Probe of
Circuit Tester
Brown - - - No Continuity No Continuity Continuity
Brown No Continuity - - - No Continuity Continuity
Orange Continuity Continuity - - - Continuity
Brown/White No Continuity No Continuity No Continuity - - -
Using Digital Circuit Tester
Apply Red (Positive) Probe of the Circuit Tester
Brown Brown Orange Brown/White
Apply Black (Negative) Probe
of Circuit Tester
Brown - - - No Continuity No Continuity Continuity
Brown No Continuity - - - No Continuity Continuity
Orange Continuity Continuity - - - Continuity
Brown/White No Continuity No Continuity No Continuity - - -
Note 1: Because of the difference of measuring methods between the analog circuit tester and the digital circuit tester,
polarity of the tester needles should be reversed.
Note 2: “Continuity” means forward direction characteristics of the diode, and is different from short circuit condition in
which a pointer of the tester goes out or its normal scale, it shows resistance to some extent. When results of the
checking indicates failure even in one section, replace with a new diode.
Note 3: Simpson brand analog testers have the same characteristics as a digital tester.