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SEC042D
ECM Terminals and Reference Value
NFEC0044
PREPARATION
NFEC0044S01
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
NFEC0044S02
SEF970W
ECM INSPECTION TABLE
NFEC0044S03
Specification data are reference values and are measured between
each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring the input/
output voltage. Doing so may result in damage to the ECM’s
transistor. Use ground other than the ECM terminals, such as
the ground.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value
EC-141
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