Evaporative Emissions (Evap) Control System Monitor And Readiness Code; Air Fuel Ratio (A/F) Sensor Monitor And Readiness Code; Air/Fuel Ratio (A/Fl Sensor Heater Monitor Readiness Code) - Honda S2000 Service Manual

Evaporative Emissions (EVAPI Control
System Monitor and Readiness code
NOTE:
. All readiness code are cleared when the battery is
disconnected or when the ECM is cleared with the
OBD ll scan tool or Honda PGM Tester.
. The enable criteria musl be repeated ifthe intake air
temperature (lAT) drops lower then 36'F (20'C) from
its value at engine start up.
Enable Criteria
. At engine start up, ECT and IAT are higher then 32"F
(0'C) , but lower then 95'F {35"C)
. At engine stan up, the ECT and IAT are within 12'F
(7"C) of each other.
Procedure
'1.
Connect the scan toolto the vehicle's data link
connector {DLC), and bring up the tool's generic
O B D l l m o d e .
2 . S t a r t t h e e n g i n e .
3. Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise. After about 2.5
miles (4.0 km), the readiness code should switch
from incomplete to complete.
4. lf the readinesscode isstill setto incomplete, check
for a temporary DTC. lfthere is no DTC, one or
more of the enable criteria were probably not met;
rePeat the Orocedure.
Air Fuel Ratio (A/F) Sensor Monitor and
Readiness Code
NOTE:
. Do not turn the ignition switch off during the
proceoure.
. 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.
Enable Criteria
ECT at 140'F (60"C) or higher.
Procedure
1. Connect the scan tool to the vehicle's data link
connector (DLC), and bring up the tool's generic
O B D l l m o d e .
2. Start the engine.
3. Test-drive the vehicle under stop-and-go conditions
with shon periods of steady cruise. During the
drive, decelerate (wirh the throttle fully closed) for
5 seconds. After about 3.5 miles (5.6 km), the
readiness code should switch from incomplete to
c o m p l e t e .
4. lf the readiness code is still setto incomplete. check
for a temporary DTC. lf there is no DTC. the enable
criteria was probably not met; repeat the procedure.
Air/Fuel Ratio (A/Fl Sensor Heater Monitor
Readiness Code
NOTE: All readiness codes are cleared when the batterv
is disconnected or when the ECM is cleared with the
OBD ll scan tool or Honda PGM Tester.
Procedure
1. Connect the scan tool to the vehicle's data link
connector (DLC), and bring up the tool's generic
O B D l l m o d e .
2. Start the engine, and let it idle for 1 minute. The
readiness code should switch from incomDlete to
complete.
3 . l f t h e r e a d i n e s s c o d e i s s t i l l s e t t o i n c o m p l e t e , c h e c k
for a temporary DTC. lf there is no DTC, repeat the
procedure.
(cont'd)
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