Toyota ZZT230 series, Repair Manual

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Dl-63
DIAGNOSTICS
-
ENGINE
8 Check for open and short In harness and connector
between ECM
a
n
d
oxygen
sansor (See page IN-20).
Repair or replace harness or connector.
Replace oxygen
sensor.
9
Perform confirmation driving pattern (See page Dl-49).
10 Is there DTC
P0171
or
P0172
being output again?
)
Check and replace ECM.
)
11
Did vehicle runs out of fuel In the past?
Check for Intermittent problems.
DTC P0171 or P0172 1s caused by running out
of
fuel.