Engine Control System (2ZR-FE) (Diagnostic Codes (P043E-P1605): Diagnosis Toyota Corolla X рестайлинг

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

INSPECTION PROCEDURE

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

Read freeze frame data using the Techstream tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Scheme 319

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1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE PURGE VSV CONTROL) Connect the Techstream to the DLC3. Disconnect the vacuum hose from the purge VSV. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control. When the purge VSV is operated using the Techstream, check whether the VSV applies suction to your finger. OK Tester Operation Specified Condition VSV is ON VSV applies suction to finger VSV is OFF VSV applies no suction to finger Reconnect the vacuum hose to the purge VSV. NG --> See step 2 OK --> See step 6
2. INSPECT PURGE VSV Inspect the purge VSV. Refer to «INSPECTION»(ref-426035-S28024510752011101200000) . NG --> See step 7 OK: Go to next step
3. INSPECT PURGE VSV (POWER SOURCE VOLTAGE) Disconnect the purge VSV connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B19-2 - Body ground Ignition switch ON 11 to 14 V Reconnect the purge VSV connector. NG --> See step 5 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the purge VSV connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B19-1 - B31-62 (PRG) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B19-1 or B31-62 (PRG) - Body ground Always 10 kohms or higher Reconnect the purge VSV connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PURGE VSV - ECM) OK --> See step 8
5. INSPECT FUSE (EFI NO. 2 FUSE) Remove the EFI No. 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI No. 2 fuse Always Below 1 ohms Reinstall the EFI No. 2 fuse. NG --> REPLACE FUSE (EFI NO. 2 FUSE) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - PURGE VSV)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-425888-S02484986942011101200000)
7. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-426035-S38740795802011101200000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-426060-S19785503332011101200000)

HINT

The canister pressure sensor is built into the canister pump module.

Note. When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 322

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Vapor Pressure Pump. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. Result Display (DTC Output) Test Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Less than 45 kPa-a (430 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM A P0453 More than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM B C --> See step 4 B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B31-68 (PPMP) - Body ground Always Below 10 ohms Wire harness/connector (ECM - Canister pressure sensor) Short in canister pressure sensor circuit A 10 kohms or higher Wire harness/connector (ECM - Canister pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 8 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B31-68 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A Below 10 ohms Short in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. B --> See step 7 A --> See step 6
4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-426057-S17400540802011101200000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition L50-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V L50-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V Standard Resistance Tester Connection Condition Specified Condition L50-2 (SGND) - Body ground Always Below 100 ohms Result Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. B --> See step 7 A: Go to next step
6. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the charcoal canister assembly. Refer to «REMOVAL»(ref-426035-S26308323842011101200000) . NOTE: When replacing the charcoal canister assembly, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. NEXT --> See step 9
7. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER PUMP MODULE - ECM) HINT: If the exhaust tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 9
8. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-426060-S19785503332011101200000) . NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. HINT: If no pending DTCs are displayed on the Techstream, the repair has been successfully completed. NEXT --> END

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
2. STP signal conditions can be checked using the Techstream. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Stop Light Switch and ST1. Check the Data List indication when the brake pedal is depressed and released.

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1. INSPECT STOP LIGHT SWITCH (TERMINAL VOLTAGE) Disconnect the stop light switch connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A1-2 - Body ground Always 11 to 14 V A1-3 - Body ground Ignition switch ON 11 to 14 V Reconnect the stop light switch connector. NG --> See step 4 OK: Go to next step
2. INSPECT STOP LIGHT SWITCH Inspect the stop light switch. Refer to «INSPECTION»(ref-426051-S30786016322011101200000) . NG --> See step 5 OK: Go to next step
3. INSPECT ECM (STP AND ST1- VOLTAGE) Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A50-35 (ST1-) - Body ground Brake pedal released 7.5 to 14 V Brake pedal depressed Below 1.5 V A50-36 (STP) - Body ground Brake pedal released Below 1.5 V Brake pedal depressed 7.5 to 14 V Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - ECM) OK --> See step 6
4. INSPECT FUSES (STOP AND IGN FUSES) Remove the STOP and IGN fuses from the instrument panel junction block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition STOP fuse Always Below 1 ohms IGN fuse Reinstall the STOP and IGN fuses. NG --> CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STOP LIGHT SWITCH - INTEGRATION RELAY)
5. REPLACE STOP LIGHT SWITCH. Refer to «REMOVAL»(ref-426051-S12671568802011101200000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-426060-S19785503332011101200000)

HINT

1. The following conditions may also cause DTC P0505 to be set: The floor carpet overlapping slightly onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open. The accelerator pedal being not fully released.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

1. DTC P050B may be output when the engine has the symptoms listed below. If necessary, check the trouble areas listed below. Symptom Factor Trouble Area Low idle speed when engine is cold (immediately after engine start) Excessive engine friction Engine oil deterioration Drive belt tension A/C compressor Generator Rough idle when engine is cold (immediately after engine start) Abnormal combustion Fuel quality
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Scheme 326

1. INSPECT FUSE (EFI MAIN FUSE) Remove the EFI MAIN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI MAIN fuse Always Below 1 ohms Reinstall the EFI MAIN fuse. NG --> CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - EFI MAIN FUSE) Disconnect the negative battery terminal. Disconnect the positive battery terminal. Remove the EFI MAIN fuse from the engine room relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition EFI MAIN fuse (2) - A50-20 (BATT) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition EFI MAIN fuse (2) or A50-20 (BATT) - Body ground Always 10 kohms or higher Reinstall the EFI MAIN fuse. Reconnect the ECM connector. Reconnect the positive battery terminal. Reconnect the negative battery terminal. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - EFI MAIN FUSE) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (BATTERY - EFI MAIN FUSE) Disconnect the negative battery terminal. Disconnect the positive battery terminal. Remove the EFI MAIN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition Battery positive terminal - EFI MAIN fuse (1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Battery positive terminal or EFI MAIN fuse (1) - Body ground Always 10 kohms or higher Reinstall the EFI MAIN fuse. Reconnect the positive battery terminal. Reconnect the negative battery terminal. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI MAIN FUSE) OK: Go to next step
4. INSPECT BATTERY Check that the battery is not discharged or weak. OK Battery is not discharged or weak NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
5. CHECK BATTERY TERMINAL Check that the battery terminals are not loose or corroded. OK Battery terminals are not loose or corroded NG --> REPAIR OR REPLACE BATTERY TERMINAL OK: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to on. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Turn the ignition switch off and turn the Techstream off. Start the engine and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0560 is output A DTC is not output B B --> See step 7 A --> See step 8
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-425888-S02484986942011101200000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-426060-S19785503332011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

Read freeze frame data using the Techstream. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 and P1605 are used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall. As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
2. If any other DTCs are output, perform troubleshooting for those DTCs first.
3. Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference. Symptom Suspected Area Engine vibration occurs and engine stops Air-fuel ratio abnormal Engine stops with no engine vibration Ignition system, injection stoppage, high load from external parts Engine can be started with accelerator pedal depressed Insufficient air volume Rough idling after engine started Air-fuel ratio abnormal, abnormal combustion
4. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) .
6. When DTC P1603 (Engine Stall History) is stored, DTC P1605 (Rough Idling) is also stored. When confirming freeze frame data, check DTC P1605. (The ECM stores DTC P1605 first. Therefore, the 5 sets of freeze frame data can be confirmed through DTC P1605, enabling the technician to obtain more information.)
7. When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
8. Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data.
9. Inspections take into account the fact that the malfunction may not have reoccurred and place emphasis on checking the vehicle conditions present at the time when the malfunction occurred.
10. When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.

Inspection flow

Using freeze frame data, narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred.

P1603

Scheme 327

1

1. If the engine stalled when the intake air volume was low (during idling or deceleration), there may be a decrease in torque due to an incorrect air-fuel ratio, etc.
2. If the engine stalled when the intake air volume was high (during driving or acceleration), there may be a major malfunction such as continuous misfire due to ignition stoppage, fuel injection stoppage, etc. and the torque drops to zero.

2

1. If the engine speed decreased slowly, there may have been a decrease in torque due to an air-fuel ratio that was incorrect (by approximately 20 to 30%), etc.
2. If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.

3

1. If the air-fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
2. If the vehicle was normal, the air volume may have been insufficient, or the ignition timing may have been incorrect.

P1603 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

P1605

Scheme 328

1

1. If the engine speed decreased slowly, there may have been a decrease in torque due an air-fuel ratio that was incorrect (by approximately 20 to 30%), etc.
2. If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.

2

1. If the air-fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
2. If the vehicle was normal, the air volume may have been insufficient, or the ignition timing may have been incorrect.

P1605 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

*: for Automatic transaxle models

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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Scheme 337

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1603 OR P1605) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to Only DTC P1603 and/or P1605 are output A DTCs other than P1603 and P1605 are output B B --> See step 61 A: Go to next step
2. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Problem Symptom Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Closed Throttle Position SW Engine Speed Total of Short FT #1 and Long FT #1 When idling or decelerating, engine speed slowly decreases and engine stalls All 5 sets of freeze frame data are ON Decreases slowly*1 All 5 sets of freeze frame data are +15% or more*2 Air suction Sensor malfunction (value from sensor too lean) Fuel supply problem A At least 1 of the 5 sets of freeze frame data is -15% or less*3 Sensor malfunction (value from sensor too rich) B All 5 sets of freeze frame data are from -15% to +15% Intake air volume insufficient Ignition timing incorrect C When idling or decelerating, engine speed rapidly decreases and engine stalls Decreases rapidly*1 - Injection stoppage, ignition stoppage Load from external parts D When accelerating or driving at constant speed, engine stalls*4 At least one is OFF - - Sensor malfunction Injection stoppage, ignition stoppage Fuel supply problem E HINT: *1: A rapid decrease in engine speed may have been caused by an electrical malfunction in the shared wiring of all or multiple cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions apply. Otherwise, the engine speed is considered to have decreased slowly. In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 RPM or more. In the freeze frame data, the engine speed at #5 is 120 RPM or less. *2: When a DTC is stored, feedback compensation increases because the air-fuel ratio is determined to be lean. *3: When a DTC is stored, feedback compensation decreases because the air-fuel ratio is determined to be rich. *4: This item should be checked when DTC P1603 is output and is not necessary to check when only P1605 is output. E --> See step 51 D --> See step 43 C --> See step 35 B --> See step 25 A: Go to next step
3. CHECK INTAKE SYSTEM Check for air suction in the intake system [vacuum hose disconnection, cracks, gaskets, etc.]. Refer to «ON-VEHICLE INSPECTION»(ref-426062-S30607190082011101200000) . HINT: If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder. If Short FT #1 and Long FT #1 are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present. OK There is no air suction. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
4. CHECK PURGE VSV Disconnect the purge hose (on the canister side) of the purge VSV. Start the engine. Disconnect the connector of the purge VSV. Check if air flows through the purge VSV. OK Air does not flow. Connect the connector of the purge VSV. Connect the purge hose of the purge VSV. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . NG --> See step 62 OK: Go to next step
5. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Stop Light Switch At least 1 of the 5 sets of freeze frame data is ON Air suction from brake booster A All 5 sets of freeze frame data are OFF - B B --> See step 7 A: Go to next step
6. READ VALUE USING TECHSTREAM (SHORT FT #1) Connect the Techstream to the DLC3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Idle the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Short FT #1. Read value of the Data List items while depressing the brake pedal. Standard Short FT #1 change by +10% or less. HINT: Even if the results are normal, the brake booster may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the brake booster (refer to step 58). When air suction is present, the feedback compensation increases because the air-fuel ratio becomes lean. It is also possible to perform the airtightness inspection to check the brake booster. Refer to «ON-VEHICLE INSPECTION»(ref-426021-S07251153982011101200000) . NG --> See step 63 OK: Go to next step
7. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Calculate Load Below 90% of the current value of the vehicle*1 Mass air flow meter sub-assembly A AFS Voltage B1S1 3.3 V or higher*2 Air fuel ratio sensor Wire harness or connector Actual air-fuel ratio abnormal B Both freeze frame data items listed above Values are other than above - C HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data. *1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the pressure to be less than the actual intake manifold pressure, the freeze frame data will show a low engine load value. *2: If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is lean, the actual air-fuel ratio will become rich and the engine may stall. C --> See step 12 B --> See step 9 A: Go to next step
8. CHECK MASS AIR FLOW METER Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. Result Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B Install the mass air flow meter sub-assembly. HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 12 A --> See step 64
9. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Idle the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1S1 and O2S B1S2. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Techstream Display Specified Condition Control the Injection Volume for A/F Sensor (25 %) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume for A/F Sensor (-12.5 %) Air fuel ratio sensor output voltage is higher than 3.4 V Result Result Proceed to NG A OK B HINT: The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If there is almost no response from the air fuel ratio sensor, a malfunction of the air fuel ratio sensor is suspected. Even if the results are normal, the air fuel ratio sensor may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the air fuel ratio sensor (refer to step 58). B --> See step 12 A: Go to next step
10. CHECK AIR FUEL RATIO SENSOR (POWER SOURCE VOLTAGE) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B89-2 (+B) - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Reconnect the air fuel ratio sensor connector. NG --> See step 65 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B89-1 (HA1A) - B31-104 (HA1A) Always Below 1 ohms B89-3 (A1A+) - B31-103 (A1A+) Always Below 1 ohms B89-4 (A1A-) - B31-126 (A1A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B89-1 (HA1A) or B31-104 (HA1A) - Body ground Always 10 kohms or higher B89-3 (A1A+) or B31-103 (A1A+) - Body ground Always 10 kohms or higher B89-4 (A1A-) or B31-126 (A1A-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the air fuel ratio sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 66
12. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is below 10°C (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or more*2 B HINT: *1: A long time had elapsed after stopping the engine. *2: A long time had not elapsed after stopping the engine. B --> See step 15 A: Go to next step
13. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A Engine coolant temperature sensor Thermostat A Range B Engine coolant temperature sensor B Range C - C HINT: This step is not directly related to engine stall. C --> See step 17 B --> See step 16 A: Go to next step
14. INSPECT THERMOSTAT HINT: For the thermostat inspection, refer to the following procedures. Refer to «INSPECTION»(ref-426029-S08398978652011101200000) . Result Result Proceed to NG A OK B HINT: This step is not directly related to engine stall. B --> See step 16 A --> See step 67
15. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or more Engine coolant temperature sensor A Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C (27°F) or more Engine coolant temperature sensor Both freeze frame data items listed above Values are other than above - B B --> See step 17 A: Go to next step
16. INSPECT ENGINE COOLANT TEMPERATURE SENSOR HINT: For the engine coolant temperature sensor inspection, refer to the following procedures. Refer to «INSPECTION»(ref-426060-S11646019292011101200000) . Result Result Proceed to NG A OK B HINT: Even if the results are normal, the engine coolant temperature sensor may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the engine coolant temperature sensor (refer to step 58). B --> See step 17 A --> See step 68
17. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to EVAP (Purge) VSV At least 1 of the 5 sets of freeze frame data is not 0% Purge VSV A All 5 sets of freeze frame data are 0% - B HINT: If the purge VSV is stuck closed, air-fuel ratio compensation by the purge VSV is incorrectly adjusted, and then the air-fuel ratio becomes lean and the engine may stall. B --> See step 22 A: Go to next step
18. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) Disconnect the purge hose (on the canister side) of the purge VSV. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control. When the purge VSV is operated using the Techstream, check whether the part of the purge VSV applies suction to your finger. Standard Techstream Operation Specified Condition VSV ON Purge VSV port applies suction to finger VSV OFF Purge VSV port applies no suction to finger Result Result Proceed to NG A OK B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Even if the results are normal, the purge VSV may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the purge VSV (refer to step 58). Reconnect the purge VSV connector. B --> See step 22 A: Go to next step
19. INSPECT PURGE VSV Inspect the purge VSV. Refer to «INSPECTION»(ref-426035-S28024510752011101200000) . NG --> See step 69 OK: Go to next step
20. CHECK PURGE VSV (POWER SOURCE VOLTAGE) Disconnect the purge VSV connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B19-2 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Reconnect the purge VSV connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PURGE VSV - INTEGRATION RELAY) OK: Go to next step
21. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the purge VSV connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B19-1 - B31-62 (PRG) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B19-1 or B31-62 (PRG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the purge VSV connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 70
22. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP/SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream. Standard Techstream Operation Specified Condition ON Operating sound heard OFF Operating sound not heard Result Result Proceed to NG A OK B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell. If the fuel pump operating noise is abnormal, proceed to step 23. B --> See step 24 A: Go to next step
23. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-426061-S16973437062011101200000) . NG --> See step 71 OK --> See step 72
24. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck. Result Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B HINT: If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter. B --> See step 58 A --> REPAIR OR REPLACE FUEL SYSTEM
25. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Calculate Load 110% or more of the current value of the vehicle*1 Mass air flow meter sub-assembly A AFS Voltage B1S1 Below 3.3 V*2 Air fuel ratio sensor Harness or connector Actual air-fuel ratio abnormal B Both freeze frame data items listed above Values are other than above - C HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data. *1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake manifold, the freeze frame data will show a high engine load value. *2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is rich, the actual air-fuel ratio will become lean and the engine may stall. C --> See step 30 B --> See step 27 A: Go to next step
26. CHECK MASS AIR FLOW METER Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. Result Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 34, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 30 A --> See step 64
27. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Connect the Techstream to the DLC3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Idle the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1S1 and O2S B1S2. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Techstream Display Specified Condition Control the Injection Volume for A/F Sensor (25%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume for A/F Sensor (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V Result Result Proceed to NG A OK B HINT: The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If there is almost no response from the air fuel ratio sensor, a malfunction of the air fuel ratio sensor is suspected. Even if the results are normal, the air fuel ratio sensor may have been malfunctioning. Continue this inspection procedure until step 34, and if there are no problems with other parts, replace the air fuel ratio sensor (refer to step 58). B --> See step 30 A: Go to next step
28. CHECK AIR FUEL RATIO SENSOR (POWER SOURCE VOLTAGE) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Connection Switch Condition Specified Condition B89-2 (+B) - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Reconnect the air fuel ratio sensor connector. NG --> See step 65 OK: Go to next step
29. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Connection Condition Specified Condition B89-1 (HA1A) - B31-104 (HA1A) Always Below 1 ohms B89-3 (A1A+) - B31-103 (A1A+) Always Below 1 ohms B89-4 (A1A-) - B31-126 (A1A-) Always Below 1 ohms Standard Resistance (Check for Short) Connection Condition Specified Condition B89-1 (HA1A) or B31-104 (HA1A) - Body ground Always 10 kohms or higher B89-3 (A1A+) or B31-103 (A1A+) - Body ground Always 10 kohms or higher B89-4 (A1A-) or B31-126 (A1A-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the air fuel ratio sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 66
30. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is below 10°C (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or more*2 B HINT: *1: A long time had elapsed after stopping the engine. *2: A long time had not elapsed after stopping the engine. B --> See step 33 A: Go to next step
31. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions when the DTC was stored which are recorded in the freeze frame data. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A Engine coolant temperature sensor Thermostat A Range B Engine coolant temperature B Range C - C HINT: This step is not directly related to engine stall. C --> See step 59 B --> See step 34 A: Go to next step
32. INSPECT THERMOSTAT HINT: For the thermostat inspection, refer to the following procedures. Refer to «INSPECTION»(ref-426029-S08398978652011101200000) . Result Result Proceed to NG A OK B HINT: This step is not directly related to engine stall. B --> See step 34 A --> See step 67
33. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or higher Engine coolant temperature sensor A Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C (27°F) or more Engine coolant temperature sensor Both freeze frame data items listed above Values are other than above - B B --> See step 59 A: Go to next step
34. INSPECT ENGINE COOLANT TEMPERATURE SENSOR HINT: For the engine coolant temperature sensor inspection, refer to the following procedures. Refer to «INSPECTION»(ref-426060-S11646019292011101200000) . Result Result Proceed to NG A OK B HINT: Even if the results are normal, the engine coolant temperature sensor may have been malfunctioning. If there are no problems with other parts, replace the engine coolant temperature sensor (refer to step 58). B --> See step 58 A --> See step 68
35. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Total of ISC Learning Value and ISC Feedback Value Below 80% of the current value of the vehicle*1 Throttle body assembly A 120% or more of the current value of the vehicle*2 B From 80 to 120% of the current value of the vehicle - C HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data. *1: If the throttle body assembly has a temporary problem in which it cannot fully close, the intake air volume and engine speed increase. As a result, the ISC learning amount becomes less than the standard. At this time, if the throttle body assembly returns to normal and fully closes, the intake air volume will be insufficient and the engine may stall. *2: If carbon accumulates on the throttle body assembly and the intake air volume decreases, the ISC learning amount is increased to maintain the idling speed. If this situation continues, the ISC learning amount reaches the upper limit, the idling speed cannot be maintained causing idling to become unstable, and the engine may stall. C --> See step 38 B --> See step 37 A: Go to next step
36. CHECK THROTTLE BODY ASSEMBLY Check for foreign matter and signs that the throttle body assembly was stuck, and also check that the valve and shaft move smoothly during operation. Result Result Proceed to NG A OK B HINT: Even if the results are normal, the throttle body assembly may have been malfunctioning. Continue this inspection procedure until step 42, and if there are no problems with other parts, replace the throttle body assembly (refer to step 58). B --> See step 38 A --> See step 73
37. CHECK THROTTLE BODY ASSEMBLY Check if carbon is in the air flow passage of the throttle body. Result Result Proceed to Carbon in passage A No carbon in passage B HINT: Even if the results are normal, the throttle body assembly may have been malfunctioning. Continue this inspection procedure until step 42, and if there are no problems with other parts, replace the throttle body assembly (refer to step 58). B --> See step 38 A --> See step 73
38. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in neutral. Check the engine speed while operating the camshaft timing oil control valve using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall. NG --> See step 74 OK: Go to next step
39. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall. NG --> See step 75 OK: Go to next step
40. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to IGN Advance Knock Correct Learn Value Differs from the current value of the vehicle by 10 deg or more Below 3°CA Engine coolant temperature sensor Mass air flow meter sub-assembly Knock control sensor A 3°CA or more - B Differs from the current value of the vehicle by less than 10 deg - - HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data. Even if the results are normal, the knock control sensors may have been malfunctioning. If there are no problems with other parts, replace the knock control sensors (refer to step 58). B --> See step 58 A: Go to next step
41. INSPECT ENGINE COOLANT TEMPERATURE SENSOR HINT: For the engine coolant temperature inspection, refer to the following procedures. Refer to «INSPECTION»(ref-426060-S11646019292011101200000) . NG --> See step 68 OK: Go to next step
42. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly. Refer to «ON-VEHICLE INSPECTION»(ref-426060-S18795251772011101200000) . HINT: If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter sub-assembly (intake air temperature sensor) malfunctioning, the ignition timing may become delayed. NG --> See step 64 OK --> See step 76
43. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE VOLTAGE) Disconnect the fuel injector connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Connection Switch Condition Specified Condition B9-1 - Body ground Ignition switch ON 11 to 14 V B10-1 - Body ground Ignition switch ON 11 to 14 V B11-1 - Body ground Ignition switch ON 11 to 14 V B12-1 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.) Reconnect the fuel injector connector. NG --> See step 77 OK: Go to next step
44. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE VOLTAGE) Disconnect the ignition coil connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Connection Switch Condition Specified Condition B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V B29-1 (+B) - B29-4 (GND) Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.) When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Reconnect the ignition coil connector. NG --> See step 78 OK: Go to next step
45. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Idle Spark Advn Ctrl (#1 to #4) At least one cylinder shows a value of 4°CA or more Fuel injector system Ignition coil system A All cylinders show a value of less than 4°CA - B B --> See step 47 A: Go to next step
46. READ FREEZE FRAME DATA Change the location of the ignition coil for the cylinder whose Idle Spark Advn Ctrl (#1 to #4) was 4°CA or more in step 45. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Idle Spark Advn Ctrl (#1 to #4). Result Result Proceed to Same as result in step 45 A Different from result in step 45 B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. B --> See step 79 A: Go to next step
47. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to A/C Signal Air Conditioner FB Val Power Steering Signal A/C Signal display does not change from OFF*1 Value displayed for Air Conditioner FB Val does not increase Does not change from OFF - A*2 B*3 Change from OFF to ON Power steering system A/C Signal display changes from OFF to ON*1 Value displayed for Air Conditioner FB Val increase Change from OFF to ON Does not change from OFF A/C system C*4 D*5 *1: Check not only the ON / OFF state of the air conditioner but also the change in air conditioner load. *2: for Automatic transaxle models *3: for Manual transaxle models *4: for Automatic air conditioning system *5: for Manual air conditioning system HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data. The normal value for the ISC learning amount is engine displacement (liters) x 0.9. Even if the results are normal, the air conditioning system may have been malfunctioning. Continue this inspection procedure until step 50, and if there are no problems with other parts, inspect the air conditioning system (refer to step 58). D --> See step 84 C --> See step 80 B --> See step 49 A: Go to next step
48. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Electrical Load Signal 1 and 2 Electric Load Feedback Val Difference between Engine Speed and SPD (NT) Vehicle Speed Electrical Load Signal 1 and 2 display changes from OFF to ON*1, or value displayed for Electric Load Feedback Val increases*1 Value displayed for Electric Load Feedback Val changes - - Electrical load signal circuit A Value displayed for Electric Load Feedback Val does not change At least 1 of the 5 sets of freeze frame data is below 100 RPM Below 19 mph (30 km/h) Automatic transaxle system B 19 mph (30 km/h) or more - C All 5 sets of freeze frame data are 100 RPM or more - - C Electrical Load Signal 1 and 2 display does not change from OFF, or value displayed for Electric Load Feed back Val does not increase - At least 1 of the 5 sets of freeze frame data is below 100 RPM Below 19 mph (30 km/h) Automatic transaxle system B 19 mph (30 km/h) or more - C All 5 sets of freeze frame data are 100 RPM or more - - C *1: If the Electrical Load Signal display changes from OFF to ON or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and ECM. HINT: The normal value for the ISC learning amount is engine displacement (liters) x 0.9. Even if the results are normal, the electrical load signal system and/or the automatic transaxle system may have been malfunctioning. Continue this inspection procedure until step 50, and if there are no problems with other parts, inspect the electrical load system and/or the automatic transaxle system (refer to step 58). C --> See step 50 B --> See step 81 A --> See step 82
49. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Electrical Load Signal 1 and 2 Electric Load Feedback Val Electrical Load Signal 1 and 2 display changes from OFF to ON*, or Value displayed for Electric Load Feedback Val increases* Value displayed for Electric Load Val changes Electrical load signal circuit A Value displayed for Electric Load Val does not change - B Electrical Load Signal 1 and 2 display does not change from OFF, or Value displayed for Electric Load Feedback Val does not increase - - B *: If the Electrical Load Signal display changes from OFF to ON or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM. HINT: Even if the results are normal, the electrical load signal system may have been malfunctioning. Continue this inspection procedure until step 50, and if there are no problems with other parts, inspect the electrical load system (refer to step 58). B --> See step 58 A --> See step 82
50. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Shift SW Status (P Range) or Shift SW Status (N Range) Neutral Position SW Signal At least 1 of the 5 sets of freeze frame data is OFF In D or R, NSW is ON Park/Neutral position switch A In D or R, NSW is OFF Automatic transaxle system B All 5 sets of freeze frame data are ON - - C HINT: Even if the results are normal, the park/neutral position switch and/or automatic transaxle system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch and/or automatic transaxle system (refer to step 58). C --> See step 58 B --> See step 81 A --> See step 83
51. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-425888-S11927138802011101200000) . Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Throttle Sensor Position, Calculate Load Calculate Load decreases while Throttle Sensor Position increases Mass air flow meter sub-assembly A Calculate Load does not decrease while Throttle Sensor Position increases - B B --> See step 53 A: Go to next step
52. CHECK MASS AIR FLOW METER SUB-ASSEMBLY Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. Result Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B Install the mass air flow meter sub-assembly. HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 57, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 53 A --> See step 64
53. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE VOLTAGE) Disconnect the fuel injector connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B9-1 - Body ground Ignition switch ON 11 to 14 V B10-1 - Body ground Ignition switch ON 11 to 14 V B11-1 - Body ground Ignition switch ON 11 to 14 V B12-1 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.) Reconnect the fuel injector connector. NG --> See step 77 OK: Go to next step
54. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE VOLTAGE) Disconnect the ignition coil connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V B29-1 (+B) - B29-4 (GND) Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.) When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . Reconnect the ignition coil connector. NG --> See step 78 OK: Go to next step
55. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP/SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream. Specified Condition Techstream Operation Specified Condition ON Operating sound heard OFF Operating sound not heard Result Result Proceed to NG A OK B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell. If the fuel pump operating noise is abnormal, proceed to step 56. B --> See step 57 A: Go to next step
56. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-426061-S16973437062011101200000) . NG --> See step 71 OK --> See step 72
57. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, the fuel tank), and for signs that the fuel pump was stuck. Result Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B B --> See step 58 A --> REPAIR OR REPLACE FUEL SYSTEM
58. REPLACE MALFUNCTIONING PARTS If the malfunction could not be identified in steps 3 to 24, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 6 Brake booster replacement Step 8 Mass air flow meter sub-assembly replacement Step 9 Air fuel ratio sensor replacement Step 16 Engine coolant temperature sensor replacement Step 18 Purge VSV replacement Step 24 Fuel pump replacement If the malfunction could not be identified in steps 25 to 34, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 26 Mass air flow meter sub-assembly replacement Step 27 Air fuel ratio sensor replacement Step 34 Engine coolant temperature sensor replacement If the malfunction could not be identified in steps 35 to 42, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 36, 37 Throttle body assembly replacement Step 40 Knock control sensor replacement If the malfunction could not be identified in steps 43 to 50, inspect and repair the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 47 A/C system inspection and repair Power steering system inspection and repair Step 48 Electrical load system inspection and repair Automatic transaxle system inspection or repair Step 49 Electrical load system inspection and repair Step 50 Park/Neutral position switch assembly replacement Power steering system inspection and repair If the malfunction could not be identified in steps 51 to 57, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 52 Mass air flow meter sub-assembly replacement HINT: Referring to the chart, inspect and repair or replace the part from the step where an inspection was performed. NEXT: Go to next step
59. CLEAR DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-425888-S21843066702011101200000) . NEXT: Go to next step
60. PERFORM CONFIRMATION DRIVING PATTERN Check if engine stall symptoms are present. HINT: If any engine stall symptoms are present, recheck for DTCs and freeze frame data and perform an inspection. NG --> REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA OK --> END
61. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-425888-S24994798172011101200000)
62. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-426035-S28024510752011101200000)
63. REPLACE BRAKE BOOSTER. Refer to «REMOVAL»(ref-426021-S42215670012011101200000)
64. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-426060-S22042440052011101200000)
65. CHECK AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT. Refer to «DTC P0031: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1); DTC P0032: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)»(ref-426059-S37356202412011101200000)
66. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-426060-S40759590382011101200000)
67. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-426029-S36589332712011101200000)
68. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-426060-S19018012212011101200000)
69. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-426035-S38740795802011101200000)
70. REPLACE ECM. Refer to «REMOVAL»(ref-426060-S19785503332011101200000)
71. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-426061-S25070887422011101200000)
72. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-426057-S19237386392011101200000)
73. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-426060-S38132395462011101200000)
74. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (INTAKE CAMSHAFT). Refer to «REMOVAL»(ref-426060-S01733107132011101200000)
75. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-426060-S01733107132011101200000)
76. REPLACE KNOCK CONTROL SENSOR. Refer to «REMOVAL»(ref-426060-S35101566172011101200000)
77. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-426057-S03778012542011101200000)
78. CHECK POWER SOURCE CIRCUIT. Refer to «DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit»(ref-426059-S05560685232011101200000)
79. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-426060-S30407496422011101200000)
80. CHECK AIR CONDITIONING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-426063-S08401667242011101200000)
81. CHECK AUTOMATIC TRANSAXLE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-425891-S36121972052011101200000)
82. CHECK GENERATOR CIRCUIT. Refer to «ON-VEHICLE INSPECTION»(ref-426033-S16724572202011101200000)
83. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «ON-VEHICLE INSPECTION»(ref-426023-S21224206452011101200000)
84. CHECK AIR CONDITIONING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-426046-S38584247052011101200000)