Section :
Engine
Ref. No. : EG-5005
Service Bulletin
Date : Page :
Mar.,2005 1 of 5
Area Application : Europe Model Name : YARIS, COROLLA, COROLLA VERSO, AVENSIS Model Code : SCP1#, ZZE11#, ZZE12#, AZT22#, AZT25#, ZZT22#, AAT25# Subject : Readiness Test and Readiness Monitor Drive Pattern This Service Bulletin is to inform you of the content of Readiness test for emission control systems and the details of readiness monitor drive pattern for each monitor item.
Part No. Information : New Part No.
New Part Name
Qty
-
-
-
Production Effective : Model code
Production Date
ZZT22#, AZT220
July, 2000
ZZT25#, AZT250
January, 2003
AZT251
July, 2003
ZZE11#
December, 1999
ZZE12#
October, 2001
SCP10
January, 2001
SCP12
May, 2002
OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.
Service Bulletin
Ref. No. : EG-5005 Page :
2 of 5
PURPOSE OF READINESS TESTS
The On-board Diagnostic (Euro-OBD) system is designed to monitor the performance of emissionrelated components, and report any detected abnormalities with Diagnostic Trouble Codes (DTCs). Certain emission control systems are monitored continuously, while others are once per trip only whenever the conditions are met to do so. Certain driving conditions must be encountered before these systems can be confirmed as operating normally. In the event that these driving conditions have not been met, the ECM will not have completed its "readiness test", and is not capable of displaying supported test data. Under these conditions, the scan tool will display a message indication that "NOT ALL SUPPORTED READINESS TESTS ARE COMPLETE". warning the operator that this test data is not available. If the monitor has not yet run, the status will display on the Intelligent Tester as "INCLPL" (incomplete). If the monitor has been run, th3e status will display on the Intelligent Tester as "COMPL" (complete). Systems that are not available on a particular vehicle are displayed as "N/A" (not available).
ACCESS TO READINESS TEST
Readiness tests can only be accessed using E-OBD functions of Intelligent Tester. The tester's software must be version 9.0 or newer to view the readiness monitor status. To view readiness monitor status, select "Readiness test status" from the Euro-OBD Menu" When the readiness monitor status reads "complete", the necessary conditions have been met for running performance tests for that readiness monitor. The readiness monitor will be reset to "incomplete" if: • The ECM has lost battery power or blown a fuse. • DTCs have been cleared. • The conditions for running the readiness monitor have not been met. If the readiness monitor status shows "incomplete", follow the appropriate readiness monitor drive pattern to change the status to "complete".
READINESS TEST CONTENTS Monitor items Catalyst Monitor
Refer to Item No.1
Heated Oxygen Sensor (HO2S) Monitor
Item No.2
HO2S Heater Monitor
Item No.3
NOTICE: • The following drive patterns are the fastest method of completing all the requirements necessary for making the readiness monitor status change "COMPLETE". • If forced to momentarily stop a drive pattern due to traffic for other factors, the drive pattern can be resumed. Upon completion of the drive pattern, in most cases, the readiness monitor status will change to "COMPLETE". • Sudden changes in vehicle load and speed, such as driving up and down hills and/or sudden acceleration, hinder readiness monitor completion. • Not all readiness test items are are available on each model. IMPORTANT: When you replace any emission control system related component(s) make sure to change all readiness test items from "Incomplete" to "COMPLETE". CAUTION: Strictly observe of posted speed limits, traffic laws, and road conditions when performing these drive patterns.
OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.
Ref. No. : EG-5005
Service Bulletin 1.
Page :
3 of 5
CATALYST MONITOR
40 to 55 mph (64 to 88 km/h) 35 to 45 mph (56 to 72 km/h)
Idling IG SW off Warmed up
3 min
7 min
A078883E01
(a) Preconditions (1) The monitor will not run unless: • The Malfunction Indicator Lamp (MIL) is OFF. • Engine Coolant Temperature (THW) is 75 or greater. • Intake Air Temperature (THA) is -10 or greater. NOTICE: The readiness test can be completed in cold ambient conditions (less than -10 ()). Finish the drive pattern, turn the ignition switch OFF and then ON again, and repeat the drive pattern a second time. (b) Drive Pattern (1) Connect the scan tool to DLC3 to check readiness monitor status and preconditions (refer to step (a)). (2) Drive vehicle at 64 to 88 km/h (40 to 55 mph) for approximately 3 minutes. NOTICE: Drive with smooth throttle operation and avoid sudden acceleration. If Intake Air Temperature was less than 10 when the engine was started, drive the vehicle at 64 to 88 km/h (40 to 55 mph) for an additional 3 minutes. (3) Drive the vehicle at 56 to 72 km/h (35 to 45 mph) for approximately 7 minutes. NOTICE: Drive with smooth throttle operation and avoid sudden closure of the throttle. (4) Check the status of the readiness monitor on the scan tool display. If readiness monitor status did not switch to "complete", ensure preconditions are met, turn the ignition switch OFF, and then repeat steps (2) and (3).
OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.
Service Bulletin 2.
Ref. No. : EG-5005 Page :
4 of 5
HEATED OXYGEN SENSOR (HO2S) MONITOR
Twice
Once 50 sec. or more
10 times
50 sec. or more
50 sec. or more
40 km/h (25 mph) Idling
Idling
Idling
Idling
Engine warming-up (2 minutes or more)
40 sec. or more
40 sec. or more
40 sec.
Engine Switch off
A058686E16
(a) Preconditions (1) The monitor will not run unless: • The MIL is OFF (b) Drive Pattern (1) Connect the scan tool to the DLC3 to check monitor status and preconditions. (2) Start the engine and allow it to idle for 2 minutes or more. (3) Drive the vehicle at 40 km/h (25 mph) or more at least 50 seconds. (4) Stop the vehicle and allow the engine to idle for 40 seconds. (5) Perform steps (3) and (4) ten times. (6) If readiness status does not switch to "complete", ensure preconditions are met, turn ignition OFF and then repeat steps (1) through (5). 3.
HO2S HEATER MONITOR (a) Precondition (1) The monitor will not run unless: • The MIL is OFF. (b) Drive Pattern (1) Connect the scan tool to DLC3 to check monitor status and preconditions (refer to step (a)). (2) Start the engine and allow it to idle for 10 minutes or more. (3) Drive the vehicle at 40 km/h (25 mph) or more for at least 2 minutes.
OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.
Service Bulletin
Ref. No. : EG-5005 Page :
5 of 5
(4) Check the readiness monitor status. If the readiness monitor status did not change to "complete", double-check the preconditions, turn the ignition switch OFF, and repeat steps (29 to (3).
40 km/h (25 mph)
Idling Ignition OFF
Over 10 minutes
Over 2 minutes
A078886E03
OVERSEAS CUSTOMER SERVICE TECHNICAL DIV.
