19
Figure 4-1
If more than one module is detected, you will be prompted to
select a module to test.
Use the
UP/DOWN
scroll button to select a module and press the
OK
button.
Read Codes
The Read Codes function can be performed with the key on, engine off
(KOEO) or with the key on, engine running (KOER).
Stored Codes are
also known as “hard codes”, which are fault codes,
or trouble codes that have been stored in the vehicle computer memory
because the faults have reoccurred for more than a specified amount
of key-cycles. These codes will cause the control module to illuminate
the malfunction indicator light (MIL) when emission-related faults
occur.
Pending Codes are
also referred to as “maturing codes” or “continuous
monitor codes
”. They indicate problems that the control module has
detected during the current or last driving cycle but are not as yet
considered serious. Pending Codes will not cause a malfunction
indicator light (MIL). If the fault does not occur within a certain number
of warm-up cycles, the code clears from memory.
Permanent Codes are DTCs that are "confirmed" and are retained in
the non-volatile memory of
the vehicle’s computer until the appropriate
monitor for each DTC has determined that the malfunction is no longer
present and is not causing the MIL. Permanent DTCs are stored in
non-volatile memory and can not be erased by any diagnostics service
or by disconnecting power to ECU.
1) Use
UP/DOWN
scroll button to select
Read Codes
from
Diagnostic
Menu
and press
OK
button.
