Engine Control System (Diagnostics - Introduction): Other Toyota Avalon XX30 рестайлинг 2

PRECAUTION

1. INITIALIZATION NOTE: When disconnecting the negative (-) battery cable, initialize the following systems after the cable is reconnected. System Name See procedure Power Window Control System Refer to «INITIALIZATION»(ref-428782-S26161270802011101200000) Sliding Roof System Perform RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM. Refer to «INITIALIZATION»(ref-428882-S31757844892011101200000) . Perform REGISTRATION (VIN registration) when replacing the ECM. Refer to «REGISTRATION»(ref-428881-S25633110472011101200000) .

DEFINITION OF TERMS

Scheme 20

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Scheme 27

1. w/o Smart Key System
2. w/ Smart Key System

CHECK FOR INTERMITTENT PROBLEMS

HINT

Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

1. Clear the DTCs.
2. Switch the ECM from normal mode to check mode using Techstream. Refer to «CHECK MODE PROCEDURE»(ref-428881-S31273558512011101200000) .
3. Perform a simulation test. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-428782-S36893085692011101200000) .
4. Check and wiggle the harness(es), connector(s) and terminal(s). Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-428782-S21492416292011101200000) .

REGISTRATION

Note. The Vehicle Identification Number (VIN) must be input into the replacement ECM.

HINT

The VIN is a 17-digit alphanumeric vehicle identification number. Techstream is required to register the VIN.

1. DESCRIPTION (Using Techstream) HINT: This registration service information consists of two parts: Read VIN and Write VIN. Read VIN: Explains the VIN reading process. This process allows the VIN stored in the ECM to be read in order to confirm that the two VINs, provided with the vehicle and stored in the vehicle's ECM, are the same. Write VIN: Explains the VIN writing process. This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.
2. READ VIN Confirm the vehicle VIN. Connect Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Select the following menu items: Powertrain / Engine / Utility / VIN / VIN Read.
3. WRITE VIN Confirm the vehicle VIN. Connect Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Select the following menu items: Powertrain / Engine / Utility / VIN / VIN Write.

CHECKING MONITOR STATUS

The purpose of the monitor result (mode 06) is to allow access to the results for on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples are catalyst, evaporative emission (EVAP) and thermostat.

The monitor result allows the OBD II scan tool to display the monitor status, test value, minimum test limit and maximum test limit. These data are displayed after the vehicle has been driven to run the monitor.

When the test value is not between the minimum test limit and maximum test limit, the ECM (PCM) interprets this as a malfunction. When the component is not malfunctioning, if the difference of the test value and test limit is very small, the component will malfunction in the near future.

Perform the following instructions to view the monitor status. Although the Lexus/Toyota diagnostic tester is used in the following instructions, it can be checked using a generic OBD II scan tool. Refer to your scan tool operator's manual for specific procedures.

1. PERFORM MONITOR DRIVE PATTERN Connect Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-428881-S23178403412011101200000) . Run the vehicle in accordance with the applicable drive pattern described in Readiness Monitor Drive Pattern. Refer to «READINESS MONITOR DRIVE PATTERN»(ref-428881-S42545175372011101200000) . Do not turn the ignition switch off. NOTE: The test results will be lost if the ignition switch is turned off.
2. ACCESS MONITOR RESULT Enter the following menus: Powertrain / Engine / Monitor / Result. The monitor status appears after the component name. Pass: The component is functioning normally. Fail: The component is malfunctioning. Confirm that the component is either Pass or Fail. Select the component and press ENTER. The accuracy test value appears if the monitor status is either Pass or Fail.
3. CHECK COMPONENT STATUS Compare the test value with the minimum test limit (MIN LIMIT) and maximum test limit (MAX LIMIT). If the test value is between the minimum test limit and maximum test limit, the component is functioning normally. If not, the component is malfunctioning. The test value is usually significantly higher or lower than the test limit. If the test value is on the borderline of the test limit, the component will malfunction in the near future. HINT: The monitor result might on rare occasions be Pass even if the malfunction indicator lamp (MIL) is illuminated. This indicates the system malfunctioned on a previous driving cycle. This might be caused by an intermittent problem.
4. MONITOR RESULT INFORMATION If you use a generic scan tool, multiply the test value by the scaling value listed below. Advance / Retarded Intake Side BANK 1 Monitor ID Test ID Scaling Unit Description $35 $81 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Intake Side BANK 2 Monitor ID Test ID Scaling Unit Description $36 $81 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Exhaust Side BANK 1 Monitor ID Test ID Scaling Unit Description $35 $85 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Exhaust Side BANK 2 Monitor ID Test ID Scaling Unit Description $36 $85 Multiply by 0.01 Second Forced movement of oil control valve time Air Fuel Ratio Sensor Bank 1 Sensor 1 Monitor ID Test ID Scaling Unit Description $01 $8A Multiply by 0.00012 V Rich to Lean response rate deterioration level $01 $8A Multiply by 0.00012 V Lean to Rich response rate deterioration level $01 $90 Multiply by 0.001 Second Rich to Lean delay level $01 $90 Multiply by 0.001 Second Lean to Rich delay level $01 $91 Multiply by 0.004 mA Air fuel ratio sensor current Air Fuel Ratio Sensor Bank 2 Sensor 1 Monitor ID Test ID Scaling Unit Description $05 $8A Multiply by 0.00012 V Rich to Lean response rate deterioration level $05 $8A Multiply by 0.00012 V Lean to Rich response rate deterioration level $05 $90 Multiply by 0.001 Second Rich to Lean delay level $05 $90 Multiply by 0.001 Second Lean to Rich delay level $05 $91 Multiply by 0.004 mA Air fuel ratio sensor current Heated Oxygen Sensor Bank 1 Sensor 2 Monitor ID Test ID Scaling Unit Description $02 $07 Multiply by 0.001 V Minimum sensor voltage $02 $08 Multiply by 0.001 V Maximum sensor voltage $02 $8B Multiply by 0.001 Seconds 0.35 - 0.2 V sensor switch time $02 $8D Multiply by 0.001 Seconds Duration that sensor voltage drops to 0.2 V during fuel-cut $02 $8F Multiply by 0.0003 g Maximum oxygen storage capacity Heated Oxygen Sensor Bank 2 Sensor 2 Monitor ID Test ID Scaling Unit Description $06 $07 Multiply by 0.001 V Minimum sensor voltage $06 $08 Multiply by 0.001 V Maximum sensor voltage $06 $8B Multiply by 0.001 Seconds 0.35 - 0.2 V sensor switch time $06 $8D Multiply by 0.001 Seconds Duration that sensor voltage drops to 0.2 V during fuel-cut $06 $8F Multiply by 0.0003 g Maximum oxygen storage capacity Catalyst-Bank 1 Monitor ID Test ID Scaling Unit Description $21 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 1 Catalyst-Bank 2 Monitor ID Test ID Scaling Unit Description $22 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 2 EVAP Monitor ID Test ID Scaling Unit Description $3D $C9 Multiply by 0.001 kPa Test value for small leak (P0456) $3D $CA Multiply by 0.001 kPa Test value for gross leak (P0455) $3D $CB Multiply by 0.001 kPa Test value for leak detection pump OFF stuck (P2401) $3D $CD Multiply by 0.001 kPa Test value for leak detection pump ON stuck (P2402) $3D $CE Multiply by 0.001 kPa Test value for vent valve OFF stuck (P2420) $3D $CF Multiply by 0.001 kPa Test value for vent valve ON stuck (P2419) $3D $D0 Multiply by 0.001 kPa Test value for reference orifice low flow (P043E) $3D $D1 Multiply by 0.001 kPa Test value for reference orifice high flow (P043F) $3D $D4 Multiply by 0.001 kPa Test value for purge VSV close stuck (P0441) $3D $D5 Multiply by 0.001 kPa Test value for purge VSV open stuck (P0441) $3D $D7 Multiply by 0.001 kPa Test value for purge flow insufficient (P0441) Rear Oxygen Sensor Heater Monitor ID Test ID Scaling Unit Description $42 $91 Multiply by 0.001 Ohm Oxygen sensor heater resistance bank 1 sensor 2 $46 $91 Multiply by 0.001 Ohm Oxygen sensor heater resistance bank 2 sensor 2 Misfire Monitor ID Test ID Scaling Unit Description $A1 $0B Multiply by 1 Time Total EWMA* misfire count of all cylinders in last ten driving cycles $A1 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of all cylinders in last driving cycle is displayed. While engine is running, total misfire count of all cylinders in current driving cycle is displayed. $A2 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 1 in last ten driving cycles $A2 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 1 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 1 in current driving cycle is displayed. $A3 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 2 in last ten driving cycles $A3 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 2 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 2 in current driving cycle is displayed. $A4 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 3 in last ten driving cycles $A4 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 3 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 3 in current driving cycle is displayed. $A5 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 4 in last ten driving cycles $A5 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 4 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 4 in current driving cycle is displayed. $A6 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 5 in last ten driving cycles $A6 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 5 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 5 in current driving cycle is displayed. $A7 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 6 in last ten driving cycles $A7 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 6 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 6 in current driving cycle is displayed. HINT: *: EWMA (Exponential Weighted Moving Average) misfire counts for last 10 driving cycles (calculated) Calculation: 0.1 x (current counts) + 0.9 x (previous average) Initial value for (previous average) = 0

The purpose of the monitor result (mode 06) is to allow access to the results for on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples are catalyst, evaporative emission (EVAP) and thermostat.

The monitor result allows the OBD II scan tool to display the monitor status, test value, minimum test limit and maximum test limit. These data are displayed after the vehicle has been driven to run the monitor.

When the test value is not between the minimum test limit and maximum test limit, the ECM (PCM) interprets this as a malfunction. When the component is not malfunctioning, if the difference of the test value and test limit is very small, the component will malfunction in the near future.

Perform the following instructions to view the monitor status. Although the Lexus/Toyota diagnostic tester is used in the following instructions, it can be checked using a generic OBD II scan tool. Refer to your scan tool operator's manual for specific procedures.

1. PERFORM MONITOR DRIVE PATTERN Connect Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-428881-S06483383612011101200000) . Run the vehicle in accordance with the applicable drive pattern described in Readiness Monitor Drive Pattern. Refer to «READINESS MONITOR DRIVE PATTERN»(ref-428881-S04270597662011101200000) . Do not turn the ignition switch off. NOTE: The test results will be lost if the ignition switch is turned off.
2. ACCESS MONITOR RESULT Enter the following menus: Powertrain / Engine / Monitor / Result. The monitor status appears after the component name. Pass: The component is functioning normally. Fail: The component is malfunctioning. Confirm that the component is either Pass or Fail. Select the component and press ENTER. The accuracy test value appears if the monitor status is either Pass or Fail.
3. CHECK COMPONENT STATUS Compare the test value with the minimum test limit (MIN LIMIT) and maximum test limit (MAX LIMIT). If the test value is between the minimum test limit and maximum test limit, the component is functioning normally. If not, the component is malfunctioning. The test value is usually significantly higher or lower than the test limit. If the test value is on the borderline of the test limit, the component will malfunction in the near future. HINT: The monitor result might on rare occasions be Pass even if the malfunction indicator lamp (MIL) is illuminated. This indicates the system malfunctioned on a previous driving cycle. This might be caused by an intermittent problem.
4. MONITOR RESULT INFORMATION If you use a generic scan tool, multiply the test value by the scaling value listed below. Advance / Retarded Intake Side BANK 1 Monitor ID Test ID Scaling Unit Description $35 $81 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Intake Side BANK 2 Monitor ID Test ID Scaling Unit Description $36 $81 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Exhaust Side BANK 1 Monitor ID Test ID Scaling Unit Description $35 $85 Multiply by 0.01 Second Forced movement of oil control valve time Advance / Retarded Exhaust Side BANK 2 Monitor ID Test ID Scaling Unit Description $36 $85 Multiply by 0.01 Second Forced movement of oil control valve time Air Fuel Ratio Sensor Bank 1 Sensor 1 Monitor ID Test ID Scaling Unit Description $01 $8A Multiply by 0.00012 V Rich to Lean response rate deterioration level $01 $8A Multiply by 0.00012 V Lean to Rich response rate deterioration level $01 $90 Multiply by 0.001 Second Rich to Lean delay level $01 $90 Multiply by 0.001 Second Lean to Rich delay level $01 $91 Multiply by 0.004 mA Air fuel ratio sensor current Air Fuel Ratio Sensor Bank 2 Sensor 1 Monitor ID Test ID Scaling Unit Description $05 $8A Multiply by 0.00012 V Rich to Lean response rate deterioration level $05 $8A Multiply by 0.00012 V Lean to Rich response rate deterioration level $05 $90 Multiply by 0.001 Second Rich to Lean delay level $05 $90 Multiply by 0.001 Second Lean to Rich delay level $05 $91 Multiply by 0.004 mA Air fuel ratio sensor current Heated Oxygen Sensor Bank 1 Sensor 2 Monitor ID Test ID Scaling Unit Description $02 $07 Multiply by 0.001 V Minimum sensor voltage $02 $08 Multiply by 0.001 V Maximum sensor voltage $02 $8B Multiply by 0.001 Seconds 0.35 - 0.2 V sensor switch time $02 $8D Multiply by 0.001 Seconds Duration that sensor voltage drops to 0.2 V during fuel-cut $02 $8F Multiply by 0.0003 g Maximum oxygen storage capacity Heated Oxygen Sensor Bank 2 Sensor 2 Monitor ID Test ID Scaling Unit Description $06 $07 Multiply by 0.001 V Minimum sensor voltage $06 $08 Multiply by 0.001 V Maximum sensor voltage $06 $8B Multiply by 0.001 Seconds 0.35 - 0.2 V sensor switch time $06 $8D Multiply by 0.001 Seconds Duration that sensor voltage drops to 0.2 V during fuel-cut $06 $8F Multiply by 0.0003 g Maximum oxygen storage capacity Catalyst-Bank 1 Monitor ID Test ID Scaling Unit Description $21 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 1 Catalyst-Bank 2 Monitor ID Test ID Scaling Unit Description $22 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 2 EVAP Monitor ID Test ID Scaling Unit Description $3D $C9 Multiply by 0.001 kPa Test value for small leak (P0456) $3D $CA Multiply by 0.001 kPa Test value for gross leak (P0455) $3D $CB Multiply by 0.001 kPa Test value for leak detection pump OFF stuck (P2401) $3D $CD Multiply by 0.001 kPa Test value for leak detection pump ON stuck (P2402) $3D $CE Multiply by 0.001 kPa Test value for vent valve OFF stuck (P2420) $3D $CF Multiply by 0.001 kPa Test value for vent valve ON stuck (P2419) $3D $D0 Multiply by 0.001 kPa Test value for reference orifice low flow (P043E) $3D $D1 Multiply by 0.001 kPa Test value for reference orifice high flow (P043F) $3D $D4 Multiply by 0.001 kPa Test value for purge VSV close stuck (P0441) $3D $D5 Multiply by 0.001 kPa Test value for purge VSV open stuck (P0441) $3D $D7 Multiply by 0.001 kPa Test value for purge flow insufficient (P0441) Rear Oxygen Sensor Heater Monitor ID Test ID Scaling Unit Description $42 $91 Multiply by 0.001 Ohm Oxygen sensor heater resistance bank 1 sensor 2 $46 $91 Multiply by 0.001 Ohm Oxygen sensor heater resistance bank 2 sensor 2 Misfire Monitor ID Test ID Scaling Unit Description $A1 $0B Multiply by 1 Time Total EWMA* misfire count of all cylinders in last ten driving cycles $A1 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of all cylinders in last driving cycle is displayed. While engine is running, total misfire count of all cylinders in current driving cycle is displayed. $A2 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 1 in last ten driving cycles $A2 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 1 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 1 in current driving cycle is displayed. $A3 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 2 in last ten driving cycles $A3 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 2 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 2 in current driving cycle is displayed. $A4 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 3 in last ten driving cycles $A4 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 3 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 3 in current driving cycle is displayed. $A5 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 4 in last ten driving cycles $A5 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 4 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 4 in current driving cycle is displayed. $A6 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 5 in last ten driving cycles $A6 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 5 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 5 in current driving cycle is displayed. $A7 $0B Multiply by 1 Time Total EWMA* misfire count of cylinder 6 in last ten driving cycles $A7 $0C Multiply by 1 Time When ignition switch is ON, total misfire count of cylinder 6 in last driving cycle is displayed. While engine is running, total misfire count of cylinder 6 in current driving cycle is displayed. HINT: *: EWMA (Exponential Weighted Moving Average) misfire counts for last 10 driving cycles (calculated) Calculation: 0.1 x (current counts) + 0.9 x (previous average) Initial value for (previous average) = 0

READINESS MONITOR DRIVE PATTERN

1. PURPOSE OF READINESS TESTS The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission related components, and indicate any detected abnormalities using DTCs (Diagnostic Trouble Codes). Since various components need to be monitored during different driving conditions, the OBD II system is designed to run separate monitoring programs called Readiness Monitors. To view the status, enter the following menus: Powertrain / Engine / Monitor / Status 2. When the status of a Readiness Monitor reads Complete, the necessary conditions have been met for running the performance tests for that Readiness Monitor. A generic OBD II scan tool can also be used to view the Readiness Monitor status. HINT: Many state Inspection and Maintenance (I/M) programs require the status of vehicle Readiness Monitor to show Complete before beginning emission tests. The Readiness Monitors 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. WARNING: Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive patterns. NOTE: These drive patterns represent the fastest method of satisfying all conditions necessary to achieve complete status for each specific Readiness Monitor. In the event of a drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed. In most cases, the Readiness Monitor will still achieve complete status upon completion of the drive pattern. To ensure completion of the Readiness Monitors, avoid sudden changes in vehicle load and speed (driving up and down hills and/or sudden acceleration).
2. CATALYST MONITOR (ACTIVE AIR-FUEL RATIO CONTROL TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0420]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428884-S38344054702011101200000) .
3. VVT SYSTEM MONITOR Refer to CONFIRMATION DRIVING PATTERN [P0011]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S28499221922011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P0014]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S36126318532011101200000) .
4. EVAP SYSTEM MONITOR (KEY OFF TYPE) Refer to CONFIRMATION DRIVING PATTERN [EVAP System]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428883-S28216059102011101200000) .
5. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR MONITORS (ACTIVE AIR-FUEL RATIO CONTROL TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0136]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428884-S17890480042011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P2195]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428883-S34898760852011101200000) .
6. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR HEATER MONITORS (FRONT A/F AND REAR HO2 SENSOR TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0031]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S07474873292011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P0037]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S11260239912011101200000) .

1. PURPOSE OF READINESS TESTS The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission related components, and indicate any detected abnormalities using DTCs (Diagnostic Trouble Codes). Since various components need to be monitored during different driving conditions, the OBD II system is designed to run separate monitoring programs called Readiness Monitors. To view the status, enter the following menus: Powertrain / Engine / Monitor / Status 2. When the status of a Readiness Monitor reads Complete, the necessary conditions have been met for running the performance tests for that Readiness Monitor. A generic OBD II scan tool can also be used to view the Readiness Monitor status. HINT: Many state Inspection and Maintenance (I/M) programs require the status of vehicle Readiness Monitor to show Complete before beginning emission tests. The Readiness Monitors 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. WARNING: Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive patterns. NOTE: These drive patterns represent the fastest method of satisfying all conditions necessary to achieve complete status for each specific Readiness Monitor. In the event of a drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed. In most cases, the Readiness Monitor will still achieve complete status upon completion of the drive pattern. To ensure completion of the Readiness Monitors, avoid sudden changes in vehicle load and speed (driving up and down hills and/or sudden acceleration).
2. CATALYST MONITOR (ACTIVE AIR-FUEL RATIO CONTROL TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0420]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428884-S39351422902011101200000) .
3. VVT SYSTEM MONITOR Refer to CONFIRMATION DRIVING PATTERN [P0011]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S14054662922011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P0014]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S29046477972011101200000) .
4. EVAP SYSTEM MONITOR (KEY OFF TYPE) Refer to CONFIRMATION DRIVING PATTERN [EVAP System]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428883-S26142570012011101200000) .
5. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR MONITORS (ACTIVE AIR-FUEL RATIO CONTROL TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0136]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428884-S35666484862011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P2195]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428883-S15856755372011101200000) .
6. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR HEATER MONITORS (FRONT A/F AND REAR HO2 SENSOR TYPE) Refer to CONFIRMATION DRIVING PATTERN [P0031]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S18159191102011101200000) . Refer to CONFIRMATION DRIVING PATTERN [P0037]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-428885-S34739844972011101200000) .

CHECK MODE PROCEDURE

HINT

Techstream only

Compared to the normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect the malfunctions that cannot be detected in normal mode.

Note. All the stored DTCs and freeze frame data are erased if: 1) the ECM is changed from normal mode to check mode or vice versa; or 2) the ignition switch is turned from ON to ON (ACC) or off while in check mode. Before changing modes, always check and note any DTCs and freeze frame data.

Scheme 28

1. CHECK MODE PROCEDURE (Using Techstream) Check and ensure the following conditions: Battery positive voltage 11 V or more. Throttle valve is fully closed. Shift lever is in P or N. A/C switch is off. Turn the ignition switch off. Connect Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / Check Mode. Switch the ECM from normal mode to check mode. Check that the MIL flashes as shown in the illustration. Start the engine. Check that the MIL turns off. Simulate the conditions of the malfunction described by the customer. Check for DTCs and freeze frame data using the Techstream.

FAIL-SAFE CHART

If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.

NOTE

*1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and slowly. If the accelerator pedal is depressed quickly, the vehicle may speed up and slow down erratically.

*2: Misfire related fail-safe operations occur when catalyst overheat malfunctions occur.