(1) There is no voltage between ECM terminals IDL and E2 (E21).
(IG SW ON)
(2) Check that there is voltage between ECM terminal + B
(+ B1) and body ground. (IG SW ON)
Check wiring between ECM terminal E1 and body
ground.
Check wiring between ECM and
throttle position sensor.
Replace or repair throttle
position sensor.
(3) Check throttle position sensor.
Throttle valve fully closed
Throttle valve fully open
• IDL – E2 (E21 )
Throttle valve open
Ignition
switch ON
Try another ECM.
Replace or repair.
Replace or repair.
Refer to No. 1.
Condition
STD Voltage
No voltage
Terminals Trouble
BAD
BAD
BAD
BAD
No.
–ENGINE MFI SYSTEM
EG1–145
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