Engine Control System (2TR-FE) (Diagnostics - Introduction): Other Toyota Tacoma II рестайлинг

PRECAUTION

1. INITIALIZATION NOTE: If the ECM is replaced, register the ECU communication ID for Engine Immobilizer System. Refer to «REGISTRATION»(ref-554460-S20951960982013052000000) . Make sure to perform Reset Memory (AT initialization) when replacing the automatic transmission assembly, engine assembly or ECM. For A-604 automatic transmission models. Refer to «PRECAUTION»(ref-554493-S16194050432013052000000) . For Oaf automatic transmission models. Refer to «PRECAUTION»(ref-554494-S03282588812013052000000) . Perform Registration (VIN registration) when replacing the ECM. Refer to «REGISTRATION»(ref-554492-S33697683132013052000000) . HINT: The engine learned value cannot be reset by disconnecting the battery negative (+) terminal or removing the EFI MAIN and ETCS fuse. Refer to Initialization to perform Learning Value Reset and idle learning. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) .
2. WHEN USING TECHSTREAM NOTE: Observe the following items for safety reasons: Before using the Techstream, read the instruction manual. Prevent the Techstream cable from being caught on the pedals, shift lever or steering wheel when driving with the Techstream connected to the vehicle. When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One is for driving the vehicle, and the other operates the Techstream.

DEFINITION OF TERMS

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1. SYSTEM DIAGRAM
2. COMMUNICATION WITH OTHER COMPUTERS HINT: For CAN communication line connection information, refer to CAN Communication System. Refer to «SYSTEM DESCRIPTION»(ref-554464-S21346601022013052000000) .

CHECK FOR INTERMITTENT PROBLEMS

HINT

Techstream only

Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the 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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) .
2. Switch the ECM from normal mode to check mode using the Techstream. Refer to «CHECK MODE PROCEDURE»(ref-554492-S11890345602013052000000) .
3. Perform a simulation test. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-554309-S22247047422013052000000) .
4. Check and wiggle the harness(es), connector(s) and terminal(s). Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-554309-S22247047422013052000000) .

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. The Techstream is required to register the VIN.

1. DESCRIPTION (Using the Techstream) HINT: This registration information consists of 2 parts: Read VIN and Write VIN. Read VIN: This process allows the VIN stored in the ECM to be read in order to confirm that the 2 VINs, provided with the vehicle and stored in the vehicle ECM, are the same. Write VIN: This process allows the VIN to be input into the ECM. If the ECM is replaced, 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 the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Read.
3. WRITE VIN Confirm the vehicle VIN. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Write.

Scheme 217

1. Inspection After Repair Perform Learning Value Reset and idle learning after replacing or servicing parts related to engine operation. Details on procedures required are indicated by an asterisk and a number, and are explained in detail following the table. Part Replaced Engine Operation Learning Value Reset*1 Idle Learning*2 Throttle body assembly*3 Cleaning the deposits from the throttle body assembly.*3 - o o Engine assembly - o o Cylinder head Camshaft (for intake camshaft) Camshaft timing gear assembly Piston or piston ring Mass air flow meter Fuel injector assembly Fuel pump Air fuel ratio sensor Heated oxygen sensor Engine coolant temperature sensor Spark plug Ignition coil assembly Air leaks from intake system Gas leaks from exhaust system Confirm the following: Perform Learning Value Reset and idle learning when one or more of the following conditions is met. A diagnostic trouble code was output before component replacement. An air fuel ratio learned value (one of A/F Learn Value Idle #1, A/F Learn Value Low #1, A/F Learn Value Mid1 #1, A/F Learn Value Mid2 #1, and A/F Learn Value High #1) displayed in the Data List was higher than +/- 15% before component replacement. Starting failure, rough idle, or engine stalls after component replacement. o o The items in the list above do not apply. - - Knock sensor*4 - - - o: Necessary. -: Unnecessary. NOTE: Engine learned values cannot be reset by disconnecting the battery negative (+) terminal or removing the EFI MAIN and ETCS fuses. *1: Learning Value Reset Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Learning Value Reset. Confirm the following conditions as instructed on the screen. - Ignition switch ON - Engine stopped - Battery voltage is higher than 9 V After confirming, select "Next" and initialize the learned value. HINT: If a message indicating Learning Value Reset failure is displayed on the screen, confirm the execution conditions, and perform Learning Value Reset again. After the completion of Learning Value Reset, confirm the air fuel ratio learned values (A/F Learn Value Idle #1, A/F Learn Value Low #1, A/F Learn Value Mid1 #1, A/F Learn Value Mid2 #1, and A/F Learn Value High #1) in the Data List. Result If 0 is displayed for all the air fuel ratio learned values, initialization has completed correctly. If a value other than 0 is displayed for one of the air fuel ratio learned values, perform initialization again. After initialization, confirm the air fuel ratio learned values. If a value other than 0 is displayed, replace the ECM. *2: Idle Learning Turn the ignition switch off and wait for at least 30 seconds. Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher. HINT: Learning starts when the engine coolant temperature is 80°C (176°F) or higher. After the engine is warmed up, allow it to idle for 5 minutes with the air conditioning and all accessories off. Confirm that the idle speed is within the standard range. Standard Engine Idle Speed 600 to 700 RPM (for Manual Transaxle) 700 to 800 RPM (for Automatic Transaxle) HINT: Be sure to perform this step with all accessories off. Make sure that the shift lever is in P or N (for Automatic Transmission Models), or neutral (for Manual Transmission Models). *3: Perform Learning Value Reset and idle learning after replacing the throttle with motor body assembly or cleaning deposits from the throttle with motor body assembly. After that, check the idle speed. If the value is out of the specified range, perform the procedure below. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: History information for driving and stopping is necessary to update idle learning. Warm up the engine (engine coolant temperature is 80°C (176°F) or higher, air conditioning and all accessories are off) [A]. Drive the vehicle at 10 km/h (6 mph) or more [B]. Idle the engine for 20 seconds or more [C]. Repeat procedure [B] and [C], and check that the idle speed is within the specified range [D]. Standard Engine Idle Speed 600 to 700 RPM (for Manual Transaxle) 700 to 800 RPM (for Automatic Transaxle) HINT: Be sure to perform this step with all accessories off. Make sure that the shift lever is in P or N (for Automatic Transmission Models), or neutral (for Manual Transmission Models). If the idle speed is still out of the specified range, repeat procedure [B] and [C] until the idle speed is within the specified range [E]. *4: Drive the vehicle for a short while after replacing the knock sensor, and check if knocking occurs. If knocking occurs, drive the vehicle until knocking stops.

CHECKING MONITOR STATUS

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

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 and maximum test limits, the ECM (PCM) interprets this as a malfunction. If the test value is on the borderline of the test limits, the component is likely to malfunction in the near future.

Perform the following procedures to view the monitor status. Although these procedures refer to the Lexus/Toyota Techstream, the monitor status can be checked using a generic OBD II scan tool. Refer to your scan tool operator's manual for specific procedural information.

1. PERFORM MONITOR DRIVE PATTERN Connect the Techstream to the DLC3. Turn the ignition switch to ON and the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . Operate the vehicle in accordance with the applicable drive pattern described in Readiness Monitor Drive Pattern. Refer to «READINESS MONITOR DRIVE PATTERN»(ref-554492-S31916112672013052000000) . Do not turn the ignition switch off. HINT: The test results will be lost if the ignition switch is turned off.
2. ACCESS MONITOR RESULT Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / Result. Confirm the monitor status for each component. HINT: The monitor status for each component is displayed in the Result column. Pass: The component is functioning normally. Fail: The component is malfunctioning. Display the test results and test value for a monitor by selecting the icon in the Details column for that monitor.
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 and maximum test limits, the component is functioning normally. If not, the component is malfunctioning. The test value is usually not near the test limits. If the test value is on the borderline of the test limits, the component is likely to 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 Monitor ID Test ID Scaling Unit Description $35 $81 Multiply by 0.01 Second Forced movement of oil control valve time AIR FUEL RATIO SENSOR Monitor ID Test ID Scaling Unit Description $01 $91 Multiply by 0.004 mA A/F sensor current $01 $93 Multiply by 0.00012 V Rich to Lean response rate deterioration level $01 $94 Multiply by 0.00012 V Lean to Rich response rate deterioration level $01 $95 Multiply by 0.001 Second Rich to Lean delay level $01 $96 Multiply by 0.001 Second Lean to Rich delay level HEATED OXYGEN SENSOR Monitor ID Test ID Scaling Unit Description $02 $08 Multiply by 0.001 V Maximum sensor voltage $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 $02 $90 Multiply by 0.001 No dimension Response rate during fuel cut from rich condition (Normalization) CATALYST - BANK 1 Monitor ID Test ID Scaling Unit Description $21 $AF Multiply by 0.001 No dimension Oxygen storage capacity of catalyst bank 1(Normalization) REAR OXYGEN SENSOR HEATER Monitor ID Test ID Scaling Unit Description $42 $91 Multiply by 0.001 Ohm Oxygen sensor heater resistance for bank 1 sensor 2 FUEL SYSTEM Monitor ID Test ID Scaling Unit Description $81 $81 Multiply by 0.00003 No dimension Monitoring method using A/F sensor $81 $82 Multiply by 0.001 No dimension Monitoring method using crank angle sensor 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 closed 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) SECONDARY AIR INJECTION (AIR) BANK 1 Monitor ID Test ID Scaling Unit Description $71 $E1 Multiply by 0.01 gm/sec Test value of AIR insufficient $71 $E2 Multiply by 0.01 kPa Test value of AIR pump ON stuck $71 $E3 Multiply by 0.01 kPa Test value of AIR pump OFF stuck $71 $E4 Multiply by 0.01 kPa Test value of AIR valve ON stuck $71 $E5 Multiply by 0.01 kPa Test value of AIR valve OFF stuck $71 $EA Multiply by 0.01 kPa Test value for AIR value OFF stuck 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. HINT: *: EWMA (Exponential Weighted Moving Average) misfire counts for last 10 driving cycles (calculated) Calculation: 0.1x(current counts)+0.9x(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 and ECT / Monitor / Current Monitor / Current. 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 Monitor is 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-554497-S20174067752013052000000) .
3. VVT SYSTEM MONITOR Refer to Confirmation Driving Pattern [P0011]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-554497-S38190850552013052000000) .
4. EVAP SYSTEM MONITOR (KEY OFF TYPE) Refer to Confirmation Driving Pattern [EVAP System]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-554495-S26856290862013052000000) .
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-554497-S27078059582013052000000) . Refer to Confirmation Driving Pattern [P2195]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-554495-S29921714772013052000000) .
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-554497-S25513110692013052000000) . Refer to Confirmation Driving Pattern [P0037]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-554497-S09690265462013052000000) .
7. SECONDARY AIR INJECTION MONITOR Refer to Confirmation Driving Pattern [P0412]. Refer to «CONFIRMATION DRIVING PATTERN»(ref-554497-S16421602192013052000000) .

CHECK MODE PROCEDURE

HINT

Techstream only

Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect the malfunctions that cannot be detected by 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 ACC or OFF while in check mode. Before changing modes, always check and make a note of any DTCs and freeze frame data.

Scheme 218

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

FAIL-SAFE CHART

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

NOTE

1. *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. *2: Misfire related fail-safe operations occur when catalyst overheat malfunctions occur.