Engine Control System (Diagnostic Codes (P0420-P1605)): Diagnosis Scion xB II рестайлинг

CONDITIONING FOR SENSOR TESTING

HINT

Perform the operation with the engine speeds and time durations described below prior to checking the waveforms of the Air Fuel Ratio (A/F) sensor and Heated Oxygen (HO2) sensor. This is in order to activate the sensors sufficiently to obtain the appropriate inspection results.

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1. (a) Connect the Techstream to the DLC3.
2. (b) Start the engine and warm it up with all the accessories switched OFF until the engine coolant temperature stabilizes.
3. (c) Run the engine at an engine speed of between 2500 RPM and 3000 RPM for at least 3 minutes.
4. (d) While running the engine at 3000 RPM for 2 seconds and 2000 RPM for 2 seconds, check the waveforms of the A/F and HO2 sensors using the Techstream.

HINT

1. If either of the voltage outputs of the A/F or HO2 sensor does not fluctuate, or either of the sensors makes a noise, the sensor may be malfunctioning.
2. If the voltage outputs of both the sensors remain lean or rich, the air fuel ratio may be extremely lean or rich. In such cases, perform the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
3. If the Three-Way Catalytic Converter (TWC) has deteriorated, the HO2 sensor (located behind the TWC) voltage output fluctuates up and down frequently, even under normal driving conditions (active air-fuel ratio control is not performed).

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INSPECTION PROCEDURE

HINT

1. Sensor 1 refers to the sensor closest to the engine assembly.
2. Sensor 2 refers to the sensor farthest away from the engine assembly.
3. After performing repairs, drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern and check if DTC P0420 is output again. If a DTC is output again, replace the catalyst if it has not been replaced already.
4. 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.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

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

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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 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 Less than 45 kPa(abs) [430 mmHg(abs)] Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM A P0453 More than 120 kPa(abs) [900 mmHg(abs)] Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM B B --> See step 4 C --> See step 9 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER - 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 Specified Condition Suspected Trouble Area Proceed to B33-71 (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 more Wire harness/connector (ECM - Canister pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 7 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER - 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 B33-71 (PPMP) - Body ground Always 10 kohms or more 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 5 B --> See step 6
4. CHECK HARNESS AND CONNECTOR (CANISTER - 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 H20-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V H20-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V Standard Resistance Tester Connection Condition Specified Condition H20-2 (SGND) - Body ground Always 100 ohms or less 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 6 A: Go to next step
5. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-511382-S29693778392012102600000) . 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 8
6. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER - ECM) HINT: If the exhaust tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 8
7. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000) . NEXT --> See step 8
8. 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 / Pending. HINT: If no pending DTCs are displayed on the Techstream, the repair has been successfully completed. NEXT --> END
9. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-511387-S09781963342012102600000)

Refer to the 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.

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1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check whether the operation of the speedometer in the combination meter 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. NG --> See step 12 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 the Techstream and speedometer display are equal. NG --> See step 3 OK --> See step 8
3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the combination meter connector. Disconnect the ECM connector. Measure the resistance according the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C37-20 (+S) - A36-8 (SPD) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C37-20 (+S) or A36-8 (SPD) - Body ground Always 10 kohms or higher 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 combination meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OTHER SYSTEMS RELATED TO SPEED SIGNAL) OK: Go to next step
4. CHECK COMBINATION METER (+S VOLTAGE) Disconnect the combination meter 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 voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C37-20 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Combination Meter) Reconnect the combination meter connector. NG --> See step 10 OK: Go to next step
5. CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM) Remove the combination meter. Connect the combination meter 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 and the body ground while the wheel is turned slowly. Standard Voltage Tester Connection Switch Condition Specified Condition C37-20 (+S) - Body ground Ignition switch ON (Turn wheel slowly) Voltage generated intermittently TEXT IN ILLUSTRATION *a Component with wire harness connected (Combination Meter) HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly. Reinstall the combination meter. NG --> See step 6 OK --> See step 10
6. CHECK COMBINATION METER (SPD SIGNAL INPUT WAVEFORM) Remove the combination meter. Connect the combination meter 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 and the body ground while the wheel is turned slowly. Standard Voltage Tester Connection Switch Condition Specified Condition C37-19 (SI) - Body ground Ignition switch ON (Turn wheel slowly) Voltage generated intermittently TEXT IN ILLUSTRATION *a Component with wire harness connected (Combination Meter) HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly. Reinstall the combination meter. NG --> See step 7 OK --> See step 9
7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - BRAKE ACTUATOR) Disconnect the combination meter connector. Disconnect the brake actuator connector. Measure the resistance according the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C37-19 (SI) - A37-11 (SP1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C37-19 (SI) or A37-11 (SP1) - Body ground Always 10 kohms or higher Reconnect the combination meter connector. Reconnect the brake actuator connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
9. REPLACE COMBINATION METER. Refer to «REMOVAL»(ref-511398-S03938641392012102600000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
11. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to «REMOVAL»(ref-511399-S25365371562012102600000)
12. GO TO MALFUNCTION IN SPEEDOMETER. Refer to «Speedometer Malfunction»(ref-511400-S34912376862012102600000)

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. Stop light switch 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 Data List indication when the brake pedal is depressed and released. Brake Pedal Operation Stop Light Switch ST1 Depressed ON ON Released OFF OFF

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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 Switch 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 Remove the stop light switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 Switch pin not pushed Below 1 ohms Switch pin pushed 10 kohms or higher 3 - 4 Switch pin not pushed 10 kohms or higher Switch pin pushed Below 1 ohms Reinstall the stop light switch. 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 A36-35 (ST1-) - Body ground Brake pedal released 11 to 14 V Brake pedal depressed 0 to 3 V A36-36 (STP) - Body ground Brake pedal released 0 to 3 V Brake pedal depressed 11 to 14 V Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. INSPECT FUSES (STOP AND IGN FUSES) Remove the STOP and IGN fuses from the main body ECU. 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)
5. REPLACE STOP LIGHT SWITCH. Refer to «REMOVAL»(ref-511401-S29287909212012102600000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

HINT

1. The following conditions 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-511384-S23597167722012102600000) .

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 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. DTC P050B may be stored 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 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. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

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.

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1. INSPECT FUSE (EFI MAIN) 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 - BATTERY) 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) - A36-20 (BATT) Always Below 1 ohms Battery positive terminal - EFI MAIN fuse (1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition EFI MAIN fuse (2) or A36-20 (BATT) - Body ground Always 10 kohms or higher Battery positive terminal or EFI MAIN fuse (1) - 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 OK: Go to next step
3. INSPECT BATTERY Check that the battery is not depleted. OK Battery is not depleted NG --> REPLACE BATTERY OK: Go to next step
4. 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
5. 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-511384-S36374632912012102600000) . Turn the ignition switch off and turn the Techstream off. Turn the ignition switch to ON and turn the Techstream on. Wait for 5 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0560 A No output B B --> See step 7 A --> See step 6
6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION

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.

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

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 is cranked normally. If the engine will not crank, proceed to the problem symptoms table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-511384-S26307350452012102600000) .
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.

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1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 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 / Starter Signal. Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions. OK Ignition Switch Position Starter Signal ON Close (Starter signal OFF) START Open (Starter signal ON) NG --> See step 2 OK --> See step 12
2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Disconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector. 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 / Starter Signal. Check the value displayed on the Techstream when the ignition switch is turned to ON. RESULT Result Proceed to Remains ON A OFF (M/T models) B OFF (A/T models) C Reconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector. B --> See step 4 C --> See step 8 A: Go to next step
3. INSPECT ECM (STA TERMINAL VOLTAGE) Disconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector. Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Proceed to STA (A36-48) - Body ground Ignition switch ON 11 to 14 V A Below 1.5 V B Reconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector. Reconnect the ECM connector. B --> See step 18 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - ST RELAY - CLUTCH START SWITCH OR PNP SWITCH)
4. INSPECT CLUTCH START SWITCH Disconnect the clutch start switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 OFF (free) 10 kohms or higher RESULT Result Proceed to Outside standard range A Within standard range B Reconnect the clutch start switch connector. B --> See step 6 A: Go to next step
5. REPLACE CLUTCH START SWITCH Replace the clutch start switch. Refer to «REMOVAL»(ref-511391-S29926180982012102600000) . NEXT: Go to next step
6. INSPECT IGNITION SWITCH Remove the ignition switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition All Terminals LOCK 10 kohms or higher 2 (AM1) - 3 (ACC) ACC Below 1 ohms 2 (AM1) - 3 (ACC) - 4 (IG1) ON 7 (AM2) - 6 (IG2) 2 (AM1) - 4 (IG1) - 1 (ST1) START 7 (AM2) - 6 (IG2) - 8 (ST2) Reinstall the ignition switch. NG --> See step 17 OK: Go to next step
7. INSPECT ECM (NSW TERMINAL VOLTAGE) Disconnect the clutch start switch connector. Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Proceed to NSW (B33-52) - Body ground Ignition switch ON 11 to 14 V A Below 1.5 V B Reconnect the clutch start switch connector. Reconnect the ECM connector. B --> See step 16 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - CLUTCH START SWITCH - ECM)
8. INSPECT PARK/NEUTRAL POSITION SWITCH Disconnect the Park/Neutral Position (PNP) switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 4 - 5 Shift lever position except P and N 10 kohms or higher 2 - 5 All shift lever positions (P, R, N, D and S) 10 kohms or higher RESULT Result Proceed to Short between 4 and 5 A Short between 2 and 5 B Within standard range C Reconnect the PNP switch connector. B --> See step 15 C --> See step 10 A: Go to next step
9. REPLACE PARK/NEUTRAL POSITION SWITCH Replace park/neutral position switch. Refer to «REMOVAL»(ref-511376-S13470537822012102600000) . NEXT: Go to next step
10. INSPECT IGNITION SWITCH Remove the ignition switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition All Terminals LOCK 10 kohms or higher 2 (AM1) - 3 (ACC) ACC Below 1 ohms 2 (AM1) - 3 (ACC) - 4 (IG1) ON 7 (AM2) - 6 (IG2) 2 (AM1) - 4 (IG1) - 1 (ST1) START 7 (AM2) - 6 (IG2) - 8 (ST2) Reinstall the ignition switch. NG --> See step 13 OK: Go to next step
11. INSPECT ECM (NSW TERMINAL VOLTAGE) Disconnect the Park/Neutral Position (PNP) switch connector. Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Proceed to NSW (B33-52) - Body ground Ignition switch ON 11 to 14 V A Below 1.5 V B Reconnect the PNP switch connector. Reconnect the ECM connector. B --> See step 14 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - PNP SWITCH - ECM)
12. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
13. REPLACE IGNITION SWITCH. Refer to «REMOVAL»(ref-511390-S22168220562012102600000)
14. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
15. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(ref-511376-S13470537822012102600000)
16. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
17. REPLACE IGNITION SWITCH. Refer to «REMOVAL»(ref-511390-S22168220562012102600000)
18. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

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.

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.

Scheme 244

1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) 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. Read the values displayed on the Techstream. OK Item Measurement Item: Range (display) Normal Condition Stop Light Switch Stop light switch status: ON or OFF ON: Brake pedal is depressed OFF: Brake pedal is released NG --> See step 2 OK --> See step 5
2. INSPECT STOP LIGHT SWITCH INSTALLATION Check the stop light switch installation. Refer to «ADJUSTMENT - Step 2»(ref-511383-S37125621712012102600000) . OK Stop light switch is installed correctly. NG --> See step 8 OK: Go to next step
3. INSPECT STOP LIGHT SWITCH See step 2 NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - ECM) 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 A36-35 (ST1-) - Body ground Brake pedal released 11 to 14 V Brake pedal depressed 0 to 3 V A36-36 (STP) - Body ground Brake pedal released 0 to 3 V Brake pedal depressed 11 to 14 V TEXT IN ILLUSTRATION *a Depressed *b Released *c Front view of wire harness connector: (ECM) Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
6. REPLACE STOP LIGHT SWITCH. Refer to «REMOVAL»(ref-511401-S29287909212012102600000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
8. SECURELY REINSTALL STOP LIGHT SWITCH. Refer to «INSTALLATION - Step 7»(ref-511383-S39782594642012102600000)

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-511384-S31720518352012102600000) .
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, 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 245

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 246

1

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.

2

1. If the air-fuel ratio was abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
2. If the air-fuel ratio 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 247

Scheme 248

Scheme 249

Scheme 250

Scheme 251

Scheme 252

1. CHECK ANY OTHER DTCS OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Read DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . 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 92 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-511384-S31720518352012102600000) . RESULT Problem Symptom Freeze Frame Data Item 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 between -15% and +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 25 km/h (15 mph) or less and the difference between Engine Speed and SPD (NT) is 100 RPM or less, inspect the automatic transaxle. (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 50 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 - Step 1»(ref-511394-S02699951012012102600000) . 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. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 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-511384-S36374632912012102600000) . NG --> See step 61 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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. 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 57 57 ). 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 60 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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, 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. INSPECT MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the air flow 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 57 57 ). B --> See step 12 A --> See step 62
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. Using the Techstream, select the [Control the Injection Volume] Active Test. 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 (+12%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume (-12%) 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 57 57 ). B --> See step 12 A: Go to next step
10. CHECK HARNESS AND CONNECTOR (A/F SENSOR POWER SOURCE) Check the harnesses and connectors, referring to DTC P0031 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-511389-S14267625232012102600000) . 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 63 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Check the harnesses and connectors, referring to DTC P2237 inspection procedure. Refer to «PROCEDURE - Step 1»(ref-511387-S42358294582012102600000) . 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 64
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Result Proceed to Initial Engine Coolant Temp, Initial Intake Air Temp Difference in temperature between each item is below 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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 Inspect the thermostat. Refer to «INSPECTION - Step 1»(ref-511381-S19580961562012102600000) . 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 65
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Coolant Temp 120°C or more Engine coolant temperature sensor A Coolant Temp 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 HINT: *: Use an actual outside temperature estimated from the Initial Intake Air Temp, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 17 A: Go to next step
16. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION - Step 1»(ref-511385-S13946225172012102600000) . 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 57 57 ). B --> See step 17 A --> See step 66
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 Purge VSV Connect the Techstream to the DLC3. Turn the ignition switch to ON. Start the engine. Using the Techstream, select the [Activate the VSV for EVAP Control] Active Test. Operate the purge VSV and check the air flow. OK 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 57 57 ). B --> See step 22 A: Go to next step
19. INSPECT PURGE VSV Inspect the purge VSV. Refer to «INSPECTION - Step 1»(ref-511382-S37145532322012102600000) . NG --> See step 67 OK: Go to next step
20. CHECK HARNESS AND CONNECTOR (PURGE VSV POWER SOURCE) Check the harnesses and connectors, referring to EVAP System inspection procedure. Refer to «PROCEDURE - Step 25»(ref-511387-S40825348232012102600000) . 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 68 OK: Go to next step
21. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Check the harnesses and connectors, referring to EVAP System inspection procedure. Refer to «PROCEDURE - Step 26»(ref-511387-S40825348232012102600000) . 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 69
22. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. When performing the Active Test, check for an operating sound from the fuel pump. OK 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 - Step 1»(ref-511393-S37607652512012102600000) . NG --> See step 71 OK --> See step 70
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 57 A --> See step 72
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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. INSPECT MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the air flow 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 57 57 ). B --> See step 30 A --> See step 73
27. 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. Using the Techstream, select the [Control the Injection Volume] Active Test. 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 (+12%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume (-12%) 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 57 57 ). B --> See step 30 A: Go to next step
28. CHECK HARNESS AND CONNECTOR (A/F SENSOR POWER SOURCE) Check the harnesses and connectors, referring to DTC P0031 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-511389-S14267625232012102600000) . 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 74 OK: Go to next step
29. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Check the harnesses and connectors, referring to DTC P2237 inspection procedure. Refer to «PROCEDURE - Step 1»(ref-511387-S42358294582012102600000) . 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 75
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Result Proceed to Initial Engine Coolant Temp, Initial Intake Air Temp Difference in temperature between each item is below 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. Refer to «FREEZE FRAME DATA»(ref-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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 58 A: Go to next step
32. INSPECT THERMOSTAT Inspect the thermostat. Refer to «INSPECTION - Step 1»(ref-511381-S19580961562012102600000) . 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 76
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Coolant Temp 120°C or higher Engine coolant temperature sensor A Coolant Temp 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 HINT: *: Use an actual outside temperature estimated from the Initial Intake Air Temp, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 58 A: Go to next step
34. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION - Step 1»(ref-511385-S13946225172012102600000) . 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 57 57 ). B --> See step 57 A --> See step 77
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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 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 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. B --> See step 37 C --> See step 38 A: Go to next step
36. INSPECT THROTTLE BODY 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 Abnormal A Normal B HINT: Even if the results are normal, the throttle body 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 (refer to step 57 57 ). B --> See step 38 A --> See step 78
37. INSPECT THROTTLE BODY 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 41, and if there are no problems with other parts, replace the throttle body (refer to step 57 57 ). B --> See step 38 A --> See step 79
38. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Using the Techstream, select the [Control the VVT Linear (Bank1)] Active Test. HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in N or P (neutral). Check the engine speed while operating the Oil Control Valve (OCV) 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 80 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to IGN Advance Knock Correct Learn Value Differs from the current value of the vehicle by 10° or more Below 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 57 57 ). B --> See step 57 A: Go to next step
40. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-511385-S07217628132012102600000) . NG --> See step 81 OK: Go to next step
41. INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR) Inspect the mass air flow meter (intake air temperature sensor). Refer to «INSPECTION - Step 1»(ref-511385-S10385039332012102600000) . NG --> See step 83 OK --> See step 82
42. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-511389-S27012263192012102600000) . 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 84 OK: Go to next step
43. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000) . 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 85 OK: Go to next step
44. 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-511384-S31720518352012102600000) . 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. READ VALUE USING TECHSTREAM (IDLE SPARK ADVN CTRL #) 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. Start the engine. Using the Techstream, select [Idle Spark Advn Ctrl (#1 to #4)] of the Data List. 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. B --> See step 95 A: Go to next step
46. 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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*1 C*2 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 - *1: for A/T. *2: for M/T. 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. The normal value for the ISC learning amount is engine displacement (liters) x 0.9. Even if the results are normal, the power steering system or the air conditioning system may have been malfunctioning. Continue this inspection procedure until step 48 (or step 49), and if there are no problems with other parts, inspect the power steering system and the air conditioning system (refer to step 57 57 ). A --> See step 86 C --> See step 49 B: 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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Electrical Load Signal 1 (3) Electric Load Feedback Val Difference between Engine Speed and Turbine Speed Vehicle Speed Electrical Load Signal 1 (3) 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 below 100 RPM Below 25 km/h A/T system B 25 km/h or more - C All 5 sets of freeze frame data are 100 RPM or more - - C Electrical Load Signal 1 (3) 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 below 100 RPM Below 25 km/h A/T system B 25 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 1 (3) 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. If the vehicle speed is 25 km/h (15 mph) or less and the difference between Engine Speed and SPD (NT) is 100 RPM or less, inspect the automatic transaxle. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.) 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 A/T system may have been malfunctioning. Continue this inspection procedure until step 48, and if there are no problems with other parts, inspect the electrical load system and/or the A/T system (refer to step 57 57 ). B --> CHECK AUTOMATIC TRANSAXLE SYSTEM C --> See step 48 A --> See step 93
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Shift SW Status (P or N) Neutral Position SW Signal P and N position are both OFF in at least one data set ON when Shift SW Status D or R Park/neutral position switch A OFF when Shift SW Status D or R 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 57 57 ). B --> CHECK AUTOMATIC TRANSAXLE SYSTEM C --> See step 57 A --> See step 87
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Electrical Load Signal 1 (3) Electric Load Feedback Val Electrical Load Signal 1 (3) display changes from OFF to ON*1, or Value displayed for Electric Load Feedback Val increases*1 Electrical load signal circuit A Electrical Load Signal 1 (3) display does not change from OFF, or Value displayed for Electric Load Feedback Val does not increase - B HINT: *1: If the Electrical Load Signal 1 (3) 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 learning amount is engine displacement (liters) x 0.9. Even if the results are normal, the electrical load signal system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system (refer to step 57 57 ). B --> See step 57 A --> See step 93
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-511384-S31720518352012102600000) . 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 52 A: Go to next step
51. INSPECT MASS AIR FLOW METER Remove the mass air flow meter. Check for foreign matter in the air flow 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 56, and if there are no problems with other parts, replace the mass air flow meter (refer to step 57 57 ). B --> See step 52 A --> See step 88
52. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-511389-S27012263192012102600000) . 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 89 OK: Go to next step
53. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000) . 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 90 OK: Go to next step
54. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. When performing the Active Test, check for an operating sound from the fuel pump. OK 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 55. B --> See step 56 A: Go to next step
55. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION - Step 1»(ref-511393-S37607652512012102600000) . NG --> See step 94 OK --> See step 91
56. 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 57 A --> REPAIR OR REPLACE FUEL SYSTEM
57. 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 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 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 41, 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 39 Knock sensor replacement If the malfunction could not be identified in steps 42 to 49, 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 46 A/C system inspection and repair Power steering system inspection and repair Step 47 or 49 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 50 to 56, 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 51 Mass air flow meter 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
58. CLEAR DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . NEXT: Go to next step
59. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED 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
60. REPLACE BRAKE BOOSTER. Refer to «REMOVAL»(ref-511383-S30235822942012102600000)
61. INSPECT PURGE VSV. Refer to «INSPECTION - Step 1»(ref-511382-S37145532322012102600000)
62. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
63. REPAIR POWER SOURCE CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-511389-S20726122122012102600000)
64. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-511385-S03018773852012102600000)
65. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-511381-S42306755972012102600000)
66. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
67. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-511382-S14851704862012102600000)
68. REPAIR POWER SOURCE CIRCUIT. Refer to «WIRING DIAGRAM»(ref-511387-S28548377272012102600000)
69. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
70. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
71. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)
72. REPAIR OR REPLACE FUEL SYSTEM. Refer to «COMPONENTS»(ref-511393-S16297361692012102600000)
73. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
74. REPAIR POWER SOURCE CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-511389-S20726122122012102600000)
75. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-511385-S03018773852012102600000)
76. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-511381-S42306755972012102600000)
77. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
78. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)
79. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)
80. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-511385-S15814011642012102600000)
81. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
82. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-511385-S15426603692012102600000)
83. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
84. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)
85. REPAIR IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000)
86. CHECK AIR CONDITIONING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-511402-S03687532002012102600000)
87. CHECK PARK/NEUTRAL POSITION SWITCH. Refer to «INSPECTION»(ref-511376-S39379396842012102600000)
88. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
89. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)
90. REPAIR POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000)
91. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
92. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
93. CHECK GENERATOR CIRCUIT. Refer to «ON-VEHICLE INSPECTION»(ref-511403-S24142971182012102600000)
94. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)
95. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)