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(1 5A)

CHECKING AND CLEARING DIAGNOSTIC CODE

CLEARING DIAGNOSTIC COD

(a) After the trouble is repaired, the diagnostic code

retained in memory by the Engine ECU must be

cleared by removing the

STOP (

15 A) fuse or EFI

(15 A) fuse for 10 seconds or longer, depending on

the ambient temperature (the lower the

temperature, the longer the fuse must be left out)

with the ignition switch off

NOTE

• Clearing the memory can also be done by

removing the ba

ery cable from the negative

terminal, but in this case other memo

systems

(radio, clock, etc

.) will also be cleare

• If it is necessa

to work on engine components

requiring removal of the cable from the ba

ery

terminal, a check must first be made to see if

any diagnostic codes have been recorded

(b) After

clearing the memory, pe

orm a road test to

confirm that

a "normal"

code can now be read

If the same diagnostic code as before appears, it

indicates that the trouble has not been completely

remedied

162

Toyota COMPUTER-CONTROLLED SYSTEM User Manual

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