ELECTRONIC GOVERNOR INSPECTION [WL-3]

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Resistance Inspection

Note
•  Perform the following test only when directed.

1.  Disconnect the negative battery cable.

2.  Disconnect the injection pump connector A.

3.  Inspect for resistance between the terminals under the following conditions.

•  Consult an authorized BOSCH parts distributor for repair if the electronic governor is possibly malfunctioning.
•  If as specified, carry out the “Circuit Open/Short Inspection.”
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Specification

Terminal

Atmospheric temperature

(°C {°F})

Resistance (ohm)
I—L
18—28 {64.4—82.4}
0.58—0.84


Circuit Open/Short Inspection

1.  Inspect for an open or short circuit in the following wiring harnesses.

•  If there is an open or short circuit, repair or replace wiring harnesses.


Open circuit

•  Power circuit (injection pump connector A terminal I and PCM terminal 4X)
•  Signal circuit (Injection pump connector A terminal L and PCM terminal 4Y)


Short circuit

•  Electronic governor connector terminal L and PCM terminal 4Y to ground.