Engine Control System (2TR-FE) (Diagnostic Codes P043E-P1605): Diagnosis Toyota 4Runner V

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

INSPECTION PROCEDURE

Refer to the EVAP Inspection Procedure, refer to EVAP System .

Refer to EVAP System, refer to INSPECTION PROCEDURE .

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 tank cap assembly. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 623

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 Code. Read DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 Below 45 kPa-a (337.3 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 Higher than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Open in ECM circuit B B --> See step 5 C --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to B36-16 (PPMP) - Body ground Always 10 ohms or less 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 Test Result Suspected Trouble Area Proceed to B36-16 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A 10 ohms or less Short in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. A --> See step 6 B --> See step 7
4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-422140-S39023177172011092600000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition O15-8 (SGND) - Body ground Always 100 ohms or less 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 O15-6 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V O15-7 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V RESULT Test Result Suspected Trouble Area Proceed to Voltage and resistance are within standard ranges Open in canister pressure sensor circuit A Voltage and resistance are outside standard ranges Open in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. A --> See step 6 B --> See step 7
6. REPLACE CANISTER ASSEMBLY Replace the canister assembly, refer to «REMOVAL»(ref-422150-S15697448502011092600000) . NOTE: When replacing the canister, 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 HINT: If the exhaust pipe 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-421955-S17323454082011092600000) . 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 and turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0451, P0452 or P0453. Check the DTC judgment result. HINT: If the DTC judgment result is NORMAL, the repair has been successfully completed. NEXT --> COMPLETED

Refer to EVAP System, refer to INSPECTION PROCEDURE .

HINT

1. Various systems use the vehicle speed signal distributed from the combination meter. Check all the components possibly related to speed signal.
2. Read freeze frame data using the Techstream. Freeze frame data records 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.

Scheme 624

Scheme 625

Scheme 626

1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal. OK The operation of the speedometer is normal. HINT: The vehicle speed sensor is operating normally if the speedometer reading is normal. If the speedometer does not operate, check it by following the procedure described in Speedometer Malfunction, refer to «Speedometer Malfunction»(ref-422130-S04159321722011092600000) . NG --> See step 8 OK: Go to next step
2. READ VALUE USING TECHSTREAM (VEHICLE 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 / Data List / Vehicle Speed. Drive the vehicle. Read the value displayed on the Techstream. OK Vehicle speeds displayed on Techstream and speedometer display are equal. NG --> See step 3 OK --> See step 9
3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) Disconnect the ECM connector. Disconnect the combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition F14-28 (+S) - F50-18 (SPD) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition F14-28 (+S) or F50-18 (SPD) - Body ground Always Below 1 ohms HINT: If the wire has a short, check the speed signal circuit in other systems related to the vehicle speed signal (e.g. tire pressure warning system, audio system, etc.). Reconnect the ECM connector. Reconnect the combination meter assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OTHER SYSTEMS RELATED TO SPEED SIGNAL) OK: Go to next step
4. CHECK COMBINATION METER ASSEMBLY (VOLTAGE) Disconnect the combination meter assembly connector. HINT: Disconnect the ECU connectors on the other systems related to the speed signal (but the ECM connectors must be connected). Turn the ignition switch to ON. Measure the resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F14-28 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V Reconnect the combination meter assembly connector. NG --> See step 10 OK: Go to next step
5. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL OUTPUT WAVEFORM) Remove the combination meter assembly, refer to «REMOVAL»(ref-422131-S19922124762011092600000) . Connect the combination meter assembly connector. Move the shift lever to the neutral position. Jack up the vehicle. Turn the ignition switch to ON. Check the voltage between the terminal of the combination meter assembly and the body ground while the wheel is turned slowly. Standard Voltage Tester Connection Switch Condition Specified Condition F14-28 (+S) - Body ground Ignition switch ON (Turn wheel slowly) Voltage generated intermittently TEXT IN ILLUSTRATION *a Component with harness connected (Combination Meter Assembly) *b Turn Wheel HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly. Reinstall the combination meter assembly, refer to «INSTALLATION»(ref-422131-S25053827972011092600000) . NG --> See step 6 OK --> See step 10
6. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL INPUT WAVEFORM) Remove the combination meter assembly, refer to «REMOVAL»(ref-422131-S19922124762011092600000) . Connect the combination meter assembly connector. Move the shift lever to the neutral position. Jack up the vehicle. Turn the ignition switch to ON. Check the voltage between the terminal of the combination meter assembly and the body ground while the wheel is turned slowly. Standard Voltage Tester Connection Switch Condition Specified Condition F14-29 (SI) - Body ground Ignition switch ON (Turn wheel slowly) Voltage generated intermittently TEXT IN ILLUSTRATION *a Component with harness connected (Combination Meter Assembly) *b Turn Wheel HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly. Reinstall the combination meter assembly, refer to «INSTALLATION»(ref-422131-S25053827972011092600000) . NG --> See step 7 OK --> See step 11
7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SKID CONTROL ECU) Disconnect the skid control ECU connector. Disconnect the combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition F14-29 (SI) - A6-12 (SP1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition F14-29 (SI) or A6-12 (SP1) - Body ground Always Below 1 ohms Reconnect the skid control ECU connector. Reconnect the combination meter assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER ASSEMBLY - SKID CONTROL ECU) OK --> See step 12
8. GO TO MALFUNCTION IN SPEEDOMETER. Refer to «Speedometer Malfunction»(ref-422130-S04159321722011092600000)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
10. REPLACE ECM. Refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000)
11. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-422131-S19922124762011092600000)
12. REPLACE MASTER CYLINDER SOLENOID. Refer to «DISASSEMBLY»(ref-422132-S27132768212011092600000)

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

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records 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.
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 / Stop Light Switch and ST1. Check the STP signal when the brake pedal is depressed and released. Brake Pedal Operation Stop Light Switch Specified Condition Depressed ON ON Released OFF OFF

Scheme 627

Scheme 628

1. CHECK STOP LIGHT SWITCH ASSEMBLY (TERMINAL VOLTAGE) Disconnect the stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A4-4 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Stop Light Switch Assembly) Reconnect the stop light switch assembly connector. NG --> See step 5 OK: Go to next step
2. CHECK STOP LIGHT SWITCH ASSEMBLY (TERMINAL VOLTAGE) Disconnect the stop light switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A4-2 - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Stop Light Switch Assembly) Reconnect the stop light switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BATTERY) OK: Go to next step
3. INSPECT STOP LIGHT SWITCH ASSEMBLY Inspect the stop light switch assembly, refer to «INSPECTION»(ref-422133-S34530868702011092600000) . NG --> See step 6 OK: Go to next step
4. CHECK 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 Brake Pedal Operation Specified Condition F51-8 (ST1-) - Body ground Brake pedal released 7.5 to 14 V Brake pedal depressed Below 1.5 V F50-18 (STP) - Body ground Brake pedal released Below 1.5 V Brake pedal depressed 7.5 to 14 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - ECM) OK --> See step 7
5. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - INTEGRATION RELAY [IG2]) Disconnect the stop light switch assembly connector. Remove the integration relay from the engine room relay block. Disconnect the integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A4-4 - 1C-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A4-4 or 1C-4 - Body ground Always 10 kohms or higher Reconnect the integration relay connector. Reinstall the integration relay. Reconnect the stop light switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - INTEGRATION RELAY [IG2]) OK --> See step 8
6. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422133-S22473036062011092600000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
8. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)

HINT

1. The following condition may also cause DTC P0505 to be stored: 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. Freeze frame data records 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.
3. Refer to "Data List / Active Test" [Engine Speed, ISC Feedback Value and ISC Learning Value], refer to «DATA LIST / ACTIVE TEST»(ref-421953-S34024941762011092600000) .

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

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

HINT

1. DTC P050B may be stored when the engine shows 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 Vane pump 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 be helpful in determining whether the vehicle was moving or stationary, 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

Read freeze frame data using the Techstream. Freeze frame data records 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. Freeze frame data records 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. Freeze frame data records 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. Freeze frame data records 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.

Scheme 629

1. CHECK ANY OTHER DTCS OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Read the DTC, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . RESULT Result Proceed to P0607 and P0136, P0137 or P0138 are output A Only P0607 is output B B --> See step 3 A: Go to next step
2. INSPECT DTC (P0136, P0137 OR P0138) Inspect the P0136, P0137 or P0138 flowchart. HINT: If P0136 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If P0137 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If P0138 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If DTC P0607 and P0136, P0137 or P0138 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT --> See step 6
3. CHECK FOR EXHAUST GAS LEAK Allow the engine to idle and rev the engine. Check for exhaust gas leaks around the heated oxygen sensor. If any exhaust gas leaks are present, repair them and proceed to "Perform Confirmation Driving Pattern". If no exhaust gas leaks are present, proceed to "Perform Confirmation Driving Pattern". HINT: If no exhaust gas leaks are present, a malfunction in the heated oxygen sensor circuit is suspected. If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the output voltage of the heated oxygen sensor. NEXT: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN Clear DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Connect the Techstream to the DLC3. Start the engine. Warm up the engine until the engine coolant temperature becomes 75°C (167°F) or more. Perform the drive pattern. Accelerate the vehicle to 80 km/h (50 mph) and stop the vehicle. Drive the vehicle between 60 and 80 km/h (35 and 50 mph) for 5 minutes. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0607 and P0136, P0137 or P0138 are output A Only DTC P0607 is output B DTC is not output C B --> See step 7 C --> See step 6 A: Go to next step
5. INSPECT DTC (P0136, P0137 OR P0138) Inspect the P0136, P0137 or P0138 flowchart. HINT: If P0136 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If P0137 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If P0138 is output, troubleshoot for that DTC first, refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)»(ref-422141-S02941786302011092600000) . Then proceed to "Inspect ECM". If DTC P0607 and P0136, P0137 or P0138 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT: Go to next step
6. INSPECT ECM Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Stop the engine and wait for 30 minutes. Connect the Techstream to the DLC3. Start the engine and allow it to idle for 2 minutes. Turn the Techstream on. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Check the DTCs. RESULT Result Proceed to DTC is not output A DTC P0607 is output B B --> See step 7 A --> END
7. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

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

HINT

1. The following troubleshooting flowchart is based on the premise that the engine can be cranked normally. If the engine does not crank, proceed to Problem Symptoms Table, refer to «PROBLEM SYMPTOMS TABLE»(ref-421953-S21099219972011092600000) .
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, and other data from the time the malfunction occurred.

Scheme 630

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Read the value displayed on the Techstream when the ignition switch is turned to ON and when the engine is started. OK Condition Starter Signal Ignition switch ON OFF Engine started ON NG --> See step 2 OK --> See step 6
2. INSPECT IGNITION SWITCH ASSEMBLY Disconnect the ignition switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition Any terminals LOCK 10 kohms or higher 2 (AM1) - 1 (ST1) START Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Ignition Switch Assembly) Reconnect the ignition switch assembly connector. NG --> See step 7 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH) Disconnect the park/neutral position switch connector. Disconnect the ignition switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F15-1 (ST1) or B42-4 - Body ground Always 10 kohms or higher Reconnect the park/neutral position switch connector. Reconnect the ignition switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - STARTER RELAY [ST]) Disconnect the park/neutral position switch connector. Remove the starter relay (ST) 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 Starter relay (ST) terminal 1 or B42-5 - Body ground Always 10 kohms or higher Reconnect the park/neutral position switch connector. Reinstall the starter relay (ST). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) Disconnect the park/neutral position switch connector. Disconnect the ECM connector. Remove the starter relay (ST) 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 B42-5 or F50-8 (STA) - Body ground Always 10 kohms or higher Reconnect the park/neutral position switch connector. Reconnect the ECM connector. Reinstall the starter relay (ST). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
7. REPLACE IGNITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422142-S24180649482011092600000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

HINT

Using the Techstream to read the Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List in troubleshooting is one of the way to save time.

Note. In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

1. Warm up the engine.
2. Turn the ignition switch off.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine and ECT / Data List.
7. Follow the instructions on the Techstream and read the Data List. Item Measurement item/ Range (Display) Normal Condition Diagnostic Note Stop Light Switch Stop light switch status/ ON or OFF Brake pedal is depressed ON Brake pedal is released OFF

HINT

1. Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
2. Read freeze frame data using the Techstream. Freeze frame data records 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

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 moving or stationary, 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. Refer to "Data List / Active Test" [Air Pump Pressure (Absolute), Vapor Pressure Pump and MAP], refer to «DATA LIST / ACTIVE TEST»(ref-421953-S34024941762011092600000) .

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-421953-S01312698402011092600000) .
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, 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, no load, and shift lever in D or N) 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 631

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 632

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).

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

Scheme 633

Scheme 634

Scheme 635

Scheme 636

Scheme 637

Scheme 638

Scheme 639

Scheme 640

Scheme 641

Scheme 642

Scheme 643

1. CHECK FOR ANY OTHER DTCS OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Read the DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . RESULT Result Proceed to Only DTC P1603 and P1605 are output A DTCs other than P1603 and P1605 are output B B --> See step 59 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-421953-S01312698402011092600000) . RESULT Problem Symptom Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Closed Throttle Position SW Engine Speed Total of Short FT and Long FT 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 be caused by an electrical fault in the shared wiring of all or a number of cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions applies. 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. If the vehicle speed is 30 km/h or less and the difference between Engine Speed and SPD (NT) is 100 RPM or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.) *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. B --> See step 25 C --> See step 35 D --> See step 42 E --> See step 49 A: Go to next step
3. CHECK INTAKE SYSTEM Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.], refer to «ON-VEHICLE INSPECTION»(ref-422148-S19823457642011092600000) . 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 and Long FT 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 leakage. 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. Idle 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 DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . NG --> See step 60 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-421953-S01312698402011092600000) . 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) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Start the engine and warm it up until the engine coolant temperature stabilizes. HINT: The A/C switch and all accessory switches should be off. Idle the engine. Using the Techstream, read Short FT #1 of the Data List while depressing the brake pedal. Standard Short FT #1 changes 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 56). When air leakage from the brake booster 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. NG --> See step 61 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-421953-S01312698402011092600000) . 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 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, no load, and shift lever in D or N) and compare these data with the freeze frame data. *1: If the mass air flow meter 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. B --> See step 9 C --> See step 12 A: Go to next step
8. CHECK MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the airflow passage of the mass air flow meter. RESULT Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B Install the mass air flow meter. HINT: Even if the results are normal, the mass air flow meter 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 (refer to step 56). B --> See step 12 A --> See step 76
9. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Idle the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Tester Display Specified Condition Control the Injection Volume (25%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V RESULT Result Proceed to Abnormal A Normal 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. 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 56). B --> See step 12 A: Go to next step
10. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR POWER SOURCE) 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 B56-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) 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. NG --> See step 62 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 B56-1 (HA1A) - B38-6 (HA1A) Always Below 1 ohms B56-3 (A1A+) - B38-7 (A1A+) Always Below 1 ohms B56-4 (A1A-) - B38-1 (A1A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B56-1 (HA1A) or B38-6 (HA1A) - Body ground Always 10 kohms or higher B56-3 (A1A+) or B38-7 (A1A+) - Body ground Always 10 kohms or higher B56-4 (A1A-) or B38-1 (A1A-) - Body ground Always 10 kohms or higher RESULT Result Proceed to Abnormal A Normal B 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. B --> See step 63 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temperature, Initial Intake Air Temp Difference in temperature between each item is less than 10°C*1 A Difference in temperature between each item is 10°C 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-421953-S01312698402011092600000) . 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. B --> See step 16 C --> See step 17 A: Go to next step
14. INSPECT THERMOSTAT HINT: For the thermostat inspection, refer to the following procedures, refer to «INSPECTION»(ref-422101-S29114552122011092600000) . RESULT Result Proceed to Abnormal A Normal B HINT: This step is not directly related to engine stall. B --> See step 16 A --> See step 77
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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C or more Engine coolant temperature sensor A Coolant Temp, Ambient Temperature Engine coolant temperature is lower than outside temperature by 15°C 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-421955-S35914241522011092600000) . RESULT Result Proceed to Abnormal A Normal 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 56). B --> See step 17 A --> See step 78
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-421953-S01312698402011092600000) . 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. Turn the ignition switch to ON. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control. Operate the purge VSV and check the air flow. Standard Activate the VSV for Evap Control Specified Condition ON Air flows OFF Air does not flow RESULT Result Proceed to Abnormal A Normal 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 56). B --> See step 22 A: Go to next step
19. INSPECT PURGE VSV Inspect the purge VSV, refer to «INSPECTION»(ref-422150-S33044846932011092600000) . NG --> See step 64 OK: Go to next step
20. CHECK HARNESS AND CONNECTOR (PURGE VSV POWER SOURCE) 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 B15-2 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Purge VSV) 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. NG --> See step 65 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 B15-1 - B38-19 (PRG) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B15-1 or B38-19 (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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 79
22. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Standard Control the Fuel Pump / Speed Specified Condition ON Operating sound heard OFF Operating sound not heard RESULT Result Proceed to Abnormal A Normal 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-422143-S23123181462011092600000) . NG --> See step 66 OK --> See step 80
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 56 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-421953-S01312698402011092600000) . 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 A AFS Voltage B1S1 Below 3.3 V*2 Air fuel ratio sensor Harness and 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, no load, and shift lever in D or N) and compare these data with the freeze frame data. *1: If the mass air flow meter 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. B --> See step 27 C --> See step 30 A: Go to next step
26. CHECK MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the airflow passage of the mass air flow meter. 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 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 (refer to step 56). B --> See step 30 A --> See step 81
27. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Idle the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Tester Display Specified Condition Control the Injection Volume (25%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V RESULT Result Proceed to Abnormal A Normal 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. 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 56). B --> See step 30 A: Go to next step
28. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR POWER SOURCE) 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 B56-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) 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. NG --> See step 67 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) Tester Connection Condition Specified Condition B56-1 (HA1A) - B38-6 (HA1A) Always Below 1 ohms B56-3 (A1A+) - B38-7 (A1A+) Always Below 1 ohms B56-4 (A1A-) - B38-1 (A1A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B56-1 (HA1A) or B38-6 (HA1A) - Body ground Always 10 kohms or higher B56-3 (A1A+) or B38-7 (A1A+) - Body ground Always 10 kohms or higher B56-4 (A1A-) or B38-1 (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. NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> See step 82
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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temperature, Initial Intake Air Temp Difference in temperature between each item is less than 10°C*1 A Difference in temperature between each item is 10°C 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 present when the DTC was stored which are recorded in the freeze frame data. 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. B --> See step 34 C --> See step 57 A: Go to next step
32. INSPECT THERMOSTAT HINT: For the thermostat inspection, refer to the following procedures, refer to «INSPECTION»(ref-422101-S29114552122011092600000) . RESULT Result Proceed to Abnormal A Normal B HINT: This step is not directly related to engine stall. B --> See step 34 A --> See step 83
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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C or higher Engine coolant temperature sensor A Coolant Temp, Ambient Temperature Engine coolant temperature is lower than outside temperature by 15°C or more Engine coolant temperature sensor Both freeze frame data items listed above Values are other than above - B B --> See step 57 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-421955-S35914241522011092600000) . RESULT Result Proceed to Abnormal A Normal 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 56). B --> See step 56 A --> See step 84
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-421953-S01312698402011092600000) . 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 with motor 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, no load, and shift lever in D or N) and compare these data with the freeze frame data. *1: If the throttle body with motor assembly has a temporary problem in which it cannot fully close, the intake air volume and engine speed increase. As a result, the ISC compensation amount becomes less than the standard. At this time, if the throttle body with motor 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 with motor assembly and the intake air volume decreases, the ISC compensation amount is increased to maintain the idling speed. If this situation continues, the ISC compensation amount reaches the upper limit, the idling speed cannot be maintained causing idling to become unstable, and the engine may stall. B --> See step 37 C --> See step 38 A: Go to next step
36. CHECK THROTTLE BODY WITH MOTOR ASSEMBLY Check for foreign matter and signs that the throttle body with motor assembly was stuck, and also check that the valve and shaft move smoothly during operation. RESULT Result Proceed to Abnormal A Normal B HINT: Even if the results are normal, the throttle body with motor assembly may have been malfunctioning. Continue this inspection procedure until step 41, and if there are no problems with other parts, replace the throttle body with motor assembly (refer to step 56). B --> See step 38 A --> See step 85
37. CHECK THROTTLE BODY WITH MOTOR ASSEMBLY Check if carbon is in the airflow 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 with motor assembly may have been malfunctioning. Continue this inspection procedure until step 41, and if there are no problems with other parts, replace the throttle body with motor assembly (refer to step 56). B --> See step 38 A --> See step 86
38. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM) Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in P or N. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Tester Operation Specified Condition OFF Normal engine speed ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls 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. 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. NG --> See step 68 OK: Go to next step
39. 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-421953-S01312698402011092600000) . 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° or more Less than 3° Engine coolant temperature sensor Mass air flow meter Knock sensor A 3° or more - B Differs from the current value of the vehicle by less than 10° - - 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, no load, and shift lever in D or N) and compare these data with the freeze frame data. Even if the results are normal, the knock sensors may have been malfunctioning. If there are no problems with other parts, replace the knock sensors (refer to step 56). B --> See step 56 A: Go to next step
40. INSPECT ENGINE COOLANT TEMPERATURE SENSOR HINT: For the engine coolant temperature sensor inspection, refer to the following procedures, refer to «INSPECTION»(ref-421955-S35914241522011092600000) . NG --> See step 69 OK: Go to next step
41. INSPECT MASS AIR FLOW METER Connect the Techstream to the DLC3. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off, and the shift lever should be in N or P. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Check MAF in the Data List during idling. Standard 1.0 to 4.0 g/sec. NG --> See step 70 OK --> See step 87
42. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the fuel injector assembly connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 B1-2 - Ground Ignition switch ON 11 to 14 V No. 2 B2-2 - Ground Ignition switch ON 11 to 14 V No. 3 B3-2 - Ground Ignition switch ON 11 to 14 V No. 4 B4-2 - Ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) 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.) NG --> See step 71 OK: Go to next step
43. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil assembly 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 B7-1 (+B) - B7-4 (GND) Ignition switch ON 11 to 14 V B8-1 (+B) - B8-4 (GND) Ignition switch ON 11 to 14 V B9-1 (+B) - B9-4 (GND) Ignition switch ON 11 to 14 V B10-1 (+B) - B10-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) 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.) NG --> See step 72 OK: Go to next step
44. CHECK 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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Idle Spark Advn Ctrl (#1 to #4) At least one cylinder shows a value of 4° or more Fuel injector system Ignition coil system A All cylinders show a value of less than 4° - B B --> See step 46 A: Go to next step
45. CHECK FREEZE FRAME DATA Change the location of the ignition coil for the cylinder whose Idle Spark Advn Ctrl (#1 to #4) was 4° or more in step 44. Connect the Techstream to the DLC3. Turn the ignition switch to 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 44 A Different from result in step 44 B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. A --> See step 91 B: Go to next step
46. CHECK 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-421953-S01312698402011092600000) . 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 changes from OFF to ON Value displayed for Air Conditioner FB Val increases Does not change from OFF A/C system A Changes from OFF to ON Power steering system B A/C Signal display does not change from OFF Value displayed for Air Conditioner FB Val does not increase Changes from OFF to ON Does not change from OFF - 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, no load, and shift lever in D or N) and compare these data with the freeze frame data. *1: Check not only the on/off state of the air conditioner, but also the change in air conditioner load. The normal value for the ISC compensation amount is engine displacement (liters) x 0.9. Even if the results are normal, the power steering system may have been malfunctioning. Continue this inspection procedure until step 48, and if there are no problems with other parts, inspect the power steering system (refer to step 56). A --> CHECK AIR CONDITIONING SYSTEM B: Go to next step
47. CHECK 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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Electrical Load Signal Electric Load Feedback Val Difference between Engine Speed and Turbine Speed Vehicle Speed Electrical Load Signal display changes from OFF to ON*1, or Value displayed for Electric Load Feedback Val increases*1 Value displayed for Electric Load Val changes - - Electrical load signal circuit A Value displayed for Electric Load Val does not change At least 1 of the 5 sets of freeze frame data is less than 100 RPM Less than 30 km/h A/T system B 30 km/h or more - C All 5 sets of freeze frame data are 100 RPM or more - - C Electrical Load Signal display does not change from OFF, or Value displayed for Electric Load Feedback Val does not increase - At least 1 of the 5 sets of freeze frame data is less than 100 RPM Less than 30 km/h A/T system B 30 km/h or more - C All 5 sets of freeze frame data are 100 RPM or more - - C HINT: *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 the continuity and connections between the generator and ECM. The normal value for the ISC compensation amount is engine displacement (liters) x 0.9. Even if the results are normal, the electrical load signal system and/or A/T system may have been malfunctioning. Continue this inspection procedure until step 51, and if there are no problems with other parts, inspect the electrical load system and/or A/T system (refer to step 56). B --> CHECK AUTOMATIC TRANSMISSION SYSTEM C --> See step 48 A --> See step 88
48. CHECK 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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to P Position or N Position Park/Neutral Position Switch P and N position are both OFF in at least one data set In D or R, NSW is ON Park/neutral position switch A In D or R, NSW is OFF A/T 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 A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch and/or A/T system (refer to step 56). B --> CHECK AUTOMATIC TRANSMISSION SYSTEM C --> See step 56 A --> CHECK PARK/NEUTRAL POSITION SWITCH
49. CHECK 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-421953-S01312698402011092600000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Throttle Sensor Position, Calculate Load Calculate Load decreases while Throttle Sensor Position increases Mass air flow meter A Calculate Load does not decrease while Throttle Sensor Position increases - B B --> See step 51 A: Go to next step
50. CHECK MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the airflow passage of the mass air flow meter. RESULT Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B Install the mass air flow meter. HINT: Even if the results are normal, the mass air flow meter may have been malfunctioning. Continue this inspection procedure until step 55, and if there are no problems with other parts, replace the mass air flow meter (refer to step 56). B --> See step 51 A --> See step 89
51. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the fuel injector assembly connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 B1-2 - Ground Ignition switch ON 11 to 14 V No. 2 B2-2 - Ground Ignition switch ON 11 to 14 V No. 3 B3-2 - Ground Ignition switch ON 11 to 14 V No. 4 B4-2 - Ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) 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.) NG --> See step 73 OK: Go to next step
52. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil assembly 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 B7-1 (+B) - B7-4 (GND) Ignition switch ON 11 to 14 V B8-1 (+B) - B8-4 (GND) Ignition switch ON 11 to 14 V B9-1 (+B) - B9-4 (GND) Ignition switch ON 11 to 14 V B10-1 (+B) - B10-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) 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.) NG --> See step 74 OK: Go to next step
53. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Specified Condition Control the Fuel Pump / Speed Specified Condition ON Operating sound heard OFF Operating sound not heard RESULT Result Proceed to Abnormal A Normal 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 55 A: Go to next step
54. INSPECT FUEL PUMP Inspect the fuel pump, refer to «INSPECTION»(ref-422143-S23123181462011092600000) . NG --> See step 75 OK --> See step 90
55. 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 B --> See step 56 A --> REPAIR OR REPLACE FUEL SYSTEM
56. 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 Part to Replace Step 6 Brake booster Step 8 Mass air flow meter Step 9 Air fuel ratio sensor Step 16 Engine coolant temperature sensor Step 18 Purge VSV Step 24 Fuel pump 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 Part to Replace Step 26 Mass air flow meter Step 27 Air fuel ratio sensor Step 34 Engine coolant temperature sensor If the malfunction could not be identified in steps 35 to 41, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Part to Replace Step 36, 37 Throttle body with motor assembly Step 39 Knock sensor If the malfunction could not be identified in steps 42 to 48, inspect and repair the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection Step 46 A/C system inspection and repair Power steering system inspection and repair Step 47 A/T system inspection and repair Electrical load system inspection and repair Step 48 Park/neutral position switch inspection and repair A/T system inspection and repair If the malfunction could not be identified in steps 49 to 55, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Part to Replace Step 50 Mass air flow meter 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
57. CLEAR DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . NEXT: Go to next step
58. 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 OK --> END
59. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-421953-S08108164442011092600000)
60. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-422150-S33044846932011092600000)
61. REPLACE BRAKE BOOSTER. Refer to «REMOVAL»(ref-422132-S21720932412011092600000)
62. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
63. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421955-S25491508152011092600000)
64. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-422150-S36619726082011092600000)
65. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
66. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422143-S05273439702011092600000)
67. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
68. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-421955-S34519218492011092600000)
69. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421955-S03198855172011092600000)
70. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
71. REPAIR FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-422140-S13131865432011092600000)
72. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
73. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
74. REPAIR POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
75. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422143-S05273439702011092600000)
76. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
77. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-422101-S16434980572011092600000)
78. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421955-S03198855172011092600000)
79. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
80. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-422140-S10653806442011092600000)
81. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
82. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421955-S25491508152011092600000)
83. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-422101-S16434980572011092600000)
84. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421955-S03198855172011092600000)
85. REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-421955-S11077194472011092600000)
86. REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-421955-S11077194472011092600000)
87. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-421955-S06995183132011092600000)
88. CHECK GENERATOR CIRCUIT. Refer to «ON-VEHICLE INSPECTION»(ref-422151-S05534158612011092600000)
89. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
90. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-422140-S10653806442011092600000)
91. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-421955-S17118500252011092600000)