(2) Check that there is voltage between ECM terminals +B (+ B1)
and E1. (IG SW ON)
(1) There is no voltage between ECM terminals Vc and E2 (E21).
(IG SW ON)
Check wiring between ECM and
volume air flow meter.
Intake air temperature 20C
(68F)
(3) Check volume air flow
meter.
Replace or repair volume
air flow meter.
Measuring plate fully closed
Measuring plate fully open
Replace or repair wiring.
Ignition switch
ON
• Vc – E2 (E21)
Try another ECM.
Ignition
switch
ON
Refer to No. 1.
STD Voltage
No voltage
Terminals
ConditionTrouble
Idling
BAD
BAD
No.
–ENGINE MFI SYSTEM
EG1–165
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