Check the
before
this chart.
LED's ON
lns~)ect
system or
LED's
OFF
Normal
ECU. Try with a known
ECU.
ini~~('tt')r
or wires.
SENSORS: Check
sensors
•
Go to FUEL PRESSURE
TROUBLESHOOTING
page 1
•
Incorrect
Abnormal
Abnormal
Normal
Check fuel pressure
Normal
Correct
•
ECU.
with
a
known
not')O'lt::CIJ.
RING: Check each sensor for poor
contact at connector or a broken wire.
•
Poor contact at connector.
•
or short circuit in harness.
•
Incorrect throttle valve adjusitmEmt.
•
Follow pr()c€idures on page 10-18.
•
Too lean a mixture due to seicorldary
air leak.
• •
After
Adjustment
Loose or
Broken
Connector
or Wire
Abnormal
leaking
Not
Synchronized
After
Adjustment
THROTTlE VALVES:
Ins~)ect
.",vr1~hlf()!1i"~lti(1in
of throttle valves.
Q'fI,~~"n"i7,.tin.nifvacuums
CVllnaers and
AIR LEAKS: Check for
intake
between
rnrnrrlA
head.
page
HOSES: Check PB sensor hoses for
bloickl::tge with a
vacuum pump
Not Loose or Broken
ECU.
with a known good IECU.
10-15