most common bad ecm or dist?

1994 TOYOTA CAMRY
145,000 MILES
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LARSONJALAN
  • MEMBER
  • 1 POST
94 camry 4cyl, ck engine lite on, code 12, no rpm signal to ecm, wires from dist to ecm ok, lite comes on approx 2 secs after start, car runs ok, tach works. How do I ck dist output? Does this cause mpg problem?
Jun 11, 2012 at 3:32 AM
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KHLOW2008
  • ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
See if the schematics are of any help. More common cause would be the distributor.
Jun 11, 2012 at 5:05 PM
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