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SEC004C
ECM Terminals and Reference Value
NHEC0044
PREPARATION
NHEC0044S01
1. ECM is located behind the instrument lower cover. For this
inspection, remove instrument lower cover.
2. Remove ECM harness protector.
MEC486B
3. Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily.
I Open harness securing clip to make testing easier.
I Use extreme care not to touch 2 pins at one time.
I Data is for comparison and may not be exact.
ECM HARNESS CONNECTOR TERMINAL LAYOUT
NHEC0044S02
SEF970W
ECM INSPECTION TABLE
NHEC0044S03
Specification data are reference values and are measured between
each terminal and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM’s
transistor. Use a ground other than ECM terminals, such as
the ground.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value
EC-132
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