TROUBLESHOOTING GUIDE
F
t4 IDLE MOVES UP AI{O DOWN/IDLE
HUNN G
DESCRIP.
|
.Engine
spesds up and down
periodically
al
idle
TroN
I
5X?u68j*:SoorNG
HrNrsr
@
Throfle sensor misadjusted
@
Fuel injection
amounl nconstant
@
Poor ignition
STEP INSPECTION
acrtot{
1 ls rhere a r leakaoe ar intake air svstem?
Repajr
or
replace leak€ge
poinl
2 ls PCV
valve
OK?
cz
page
F-99
NO
3 ls arr cl€aner elemenl clean?
4
Disconnecl
highlension
lead at idle does en
gine
speed decrease equally al each cylinder?
No Go 1o
step 9
5 ls
'00
displayed
on SefDlagnosis Checker
wlh ignirion
swtch oN?
e
page
F-57
TESi SWi SELF TEST
NO Maltunction
Code No. d|spl.ye.d
Check
lor cause
(Reler
to speciied
check
sequence)
cr
Page
F-m
"84"
flashes
Check
ECU l€rminal lF voltage
17
Page
F-114
vohage: Approx. 12v
(lgnition
swilch
ON)
+
lt OK, replace ECU
F
page
F-112
+
ll nol OK, check wins b€tween
ECU
and
Sell-Diagnosis
Checker
6 Connecl
Syslem Seleclor to
diagnosis connector
and set
Tesl
Swilch to
"
SELF
TEST'
Try known
good
ECU
F-39
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