How To Set Readiness Codes; Malfunction Indicator Lamp (Mll) Indication; Catalytic Converter Monitor And Readiness Code - Honda S2000 Service Manual

Fuel and Emissions Systems
How to Set Readiness Codes
Maltunction lndicator Lamp (MlLl lndication
{ln relation to Readiness Codes}
The vehicle has certain "readiness codes" that are oart
of the on-board diagnostics for the emissions systems.
lf the vehicle's battery has been disconnected or gone
dead, if the DTCS have been cleared, or if the ECM has
been reset, these codes are reset. In some states, pan
of the emissions testing is to make sure these codes are
set to complete. lf all of them are not set to complete,
the vehicle may iail the emission test, or the test cannot
be finished.
To check if the readiness codes are comDlete, turn the
ignition switch ON (ll), but do not start the engine. The
MIL will come on for 15-20 seconds. If it then goes off,
the readiness codes are complete. lf it blinks several
times, one or more readiness codes are not complete.
To set readiness codes from incomplete to complete,
do the procedure for the appropriate code.
1 1 - 3 8
Catalytic Converter Monitor and Readiness
Code
NOTE:
. Do not turn the ignition switch off during the
orocedure.
. All readiness codes are cleared when the battery is
disconnected or when the ECM is cleared with the
OBD ll scan tool or Honda PGM Tester.
. Low ambient temperatures or excessive stop-and-go
traffic may increase the drive time needed to switch
the readiness code from incomplete to complete.
. The readiness code will not switch to complete until
a l l t h e e n a b l e c r i t e r i a a r e m e t .
. l f a f a u l t i n t h e s e c o n d a r y H O 2 S s y s t e m c a u s e d t h e
MIL to come on, the readiness code cannot be set to
complete until you correct the fault.
Enable Criteria
. ECT at '158"F (70"C) or higher.
. Intake air temperature (lAT) at 20'F ( 7"C) or higher.
. Vehicle speed is steady. and vehicle speed sensor
(VSS) reads more then 25 mph (40 km/h).
Procedure
1 , C o n n e c t t h e s c a n t o o l t o t h e v e h i c l e ' s d a t a l i n k
connector (DLC), and bring up the tool's generic
O B D l l m o d e .
Start the engine.
Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise. After about 5
miles (8 km). the readiness code should switch
trom incomplete to complete.
lf the readiness code is still set to incomplete, check
for a temporary DTC. lf there is no DTC, one or
more of the enable criteria were probably not met;
repeat the procedure.
3 .