DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE
(DIAGNOSTICS)
Step
r
CHECK FRONT OXYGEN (NF) SENSOR.
Check Yes
Is the resistance less than
10
Repair harness
2)Measure the resistance between front oxy-
gen
(NF)
sensor connector terminals.
Terminals
NO.
2
-NO.
1:
1)Turn the ignition switch
to
OFF.
R?
NOTE:
In this case, repair
the following:
Open or ground
short
circuit in har-
ness between front
oxygen
(NF)
sen-
sor
and ECM con-
nector
Poor contact in
front oxygen
(NF)
sensor connector
Poor contact in
ECM connector
and connector.
No
Replace the front
oxygen
(NF)
sen-
sor.
<Ref.
to
FU(D0HC
TURBO)-42, Front
Oxygen
(NF)
Sen-
sor.>
EN(D0HC TURBO)-QO
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