Engine Control System (2AR-FE) (P0365-P1603) (Diagnostic Codes): Diagnosis Toyota RAV4 IV

INSPECTION PROCEDURE

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. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0365, P0367 OR P0368) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0365, P0367 or P0368 is output A DTC P0365, P0367 or P0368 and other DTCs are output B HINT: If any DTCs other than P0365, P0367 or P0368 are output, troubleshoot those DTCs first. B --> See step 11 A: Go to next step
2. INSPECT CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) (POWER SOURCE) Disconnect the camshaft position sensor (for exhaust camshaft) 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 B64-3 (VC2) - Body ground Ignition switch ON 4.5 to 5.5 V Reconnect the camshaft position sensor (for exhaust camshaft) connector. NG --> See step 10 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) 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 B64-1 (VVE+) - B30-75 (EV1+) Always Below 1 ohms B64-2 (VVE-) - B30-121 (EV1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B64-1 (VVE+) or B30-75 (EV1+) - Body ground Always 10 kohms or higher B64-2 (VVE-) or B30-121 (EV1-) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR FOR EXHAUST CAMSHAFT) Check the camshaft position sensor (for exhaust camshaft) installation. OK Sensor is installed correctly. NG --> See step 12 OK: Go to next step
5. INSPECT EXHAUST CAMSHAFT (TIMING ROTOR) Check the timing rotor of the exhaust camshaft. OK Camshaft timing rotor does not have any cracks or deformation. NG --> See step 13 OK: Go to next step
6. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor.Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0365, P0367 OR P0368) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine and allow the engine to idle for 10 seconds or more. Turn the ignition switch off. Start the engine again and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0365, P0367 or P0368 is output A DTC is not output B HINT: If the engine does not start, replace the ECM. B --> END A: Go to next step
8. ADJUST VALVE TIMING Adjust the valve timing.Refer to «INSTALLATION»(ref-493422-S39074399072012081000000) . NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (DTC P0365, P0367 OR P0368) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine and allow the engine to idle for 10 seconds or more. Turn the ignition switch off. Start the engine again and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0365, P0367 or P0368 is output B HINT: If the engine does not start, replace the ECM. B --> See step 14 A --> END
10. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) 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 B64-3 (VC2) - B30-98 (VCE1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B64-3 (VC2) or B30-98 (VCE1) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
11. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
12. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493433-S29171748412012081000000)
13. REPLACE EXHAUST CAMSHAFT. Refer to «REMOVAL»(ref-493422-S04934045712012081000000)
14. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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 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 voltage output of the Air Fuel Ratio (A/F) or Heated Oxygen (HO2) sensor does not fluctuate, or there is noise in the waveform of either sensor, 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, enter the following menus: 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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HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor function provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F sensor operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume.)
7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

1. The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

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1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2; and then press the graph button on the Data List view.

HINT

1. If a malfunction cannot be found when troubleshooting DTC P0420, a lean or rich abnormality may be the cause. Perform troubleshooting by following the inspection procedure for P0171 (System Too Lean) and P0172 (System Too Rich).
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. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to EVAP System.Refer to INSPECTION PROCEDURE .

Refer to EVAP System.Refer to INSPECTION PROCEDURE .

HINT

Unit expressions

1. [kPa-a (mmHg-a)] is the absolute pressure.
2. [kPa-g (mmHg-g)] is the gauge pressure (relative pressure).
3. On the Techstream, convert the unit of measurement according to the inspection procedure.

Note. Inspect the fuses of 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.

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1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) Connect the Techstream to the DLC3. Disconnect the vacuum hose (charcoal canister side) from the purge VSV. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control. When the purge VSV is operated using the Techstream, check whether the port of the purge VSV applies suction to your finger. OK Tester Operation Specified Condition VSV ON Purge VSV port applies suction to finger VSV OFF Purge VSV port applies no suction to finger Reconnect the vacuum hose to the purge VSV. NG --> See step 2 OK --> See step 6
2. INSPECT PURGE VSV (RESISTANCE) Disconnect purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 26 to 30 ohms Reconnect the purge VSV connector. NG --> See step 5 OK: Go to next step
3. INSPECT 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 B2-1 - Body ground Ignition switch ON 11 to 14 V Reconnect the purge VSV connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the purge VSV connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B2-2 - B30-28 (PRG) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B2-2 or B30-28 (PRG) - Body ground Always 10 kohms or higher Reconnect the purge VSV connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-493428-S16733670292012081000000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

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

FOR MEXICO MODELS

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 / EVAP / 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 (430 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM A P0453 Higher than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM B B --> See step 5 C --> See step 4 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 B30-114 (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 - 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 B30-114 (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-493439-S42578108452012081000000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition S3-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V S3-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V Standard Resistance Tester Connection Condition Specified Condition S3-2 (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 7 A: Go to next step
6. REPLACE CANISTER Replace the canister.Refer to «REMOVAL»(ref-493428-S03111220872012081000000) . 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. Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter. NEXT --> See step 9
7. 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 9
8. REPLACE ECM Replace the ECM.Refer to «REMOVAL»(ref-493433-S09832564842012081000000) . NEXT --> See step 9
9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are output to the Techstream, the repair has been successfully completed. NEXT --> END

Refer to EVAP System.Refer to INSPECTION PROCEDURE .

HINT

Unit expressions

1. [kPa-a (mmHg-a)] is the absolute pressure.
2. [kPa-g (mmHg-g)] is the gauge pressure (relative pressure).
3. On the Techstream, convert the unit of measurement according to the inspection procedure.

HINT

1. Various systems uses 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 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 10
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 E19-39 (+S) - A9-15 (SPD) Always Below 1 ohms Standard Resistance (Check for open) Tester Connection Condition Specified Condition E19-39 (+S) or A9-15 (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 E19-39 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V Reconnect the combination meter connector. NG --> See step 9 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 N. 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 E19-39 (+S) - Body ground Ignition switch ON (Wheel turned slowly) Voltage generated intermittently HINT: The output voltage fluctuates up and down, similarly to the diagram, when the wheel is turned slowly. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. Reinstall the combination meter. NG --> See step 6 OK --> See step 11
6. CHECK COMBINATION METER (SPD SIGNAL INPUT WAVEFORM) Remove the combination meter. Connect the combination meter connector. Move the shift lever to N. 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 E19-38 (SI) - Body ground Ignition switch ON (Wheel turned slowly) Voltage generated intermittently HINT: The output voltage fluctuates up and down, similarly to the diagram, when the wheel is turned slowly. Reinstall the combination meter. NG --> See step 7 OK --> See step 12
7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - SKID CONTROL ECU) Disconnect the combination meter connector. Disconnect the skid control ECU connector. Measure the resistance according the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition E19-38 (SI) - A19-11 (SP1) Always Below 1 ohms Standard Resistance (Check for open) Tester Connection Condition Specified Condition E19-38 (SI) or A19-11 (SP1) - Body ground Always 10 kohms or higher Reconnect the combination meter connector. Reconnect the skid control ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
8. GO TO MALFUNCTION IN SPEEDOMETER. Refer to «Speedometer Malfunction»(ref-493451-S22596425342012081000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
11. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
12. REPLACE COMBINATION METER. Refer to «REMOVAL»(ref-493452-S15960994972012081000000)
13. REPLACE SKID CONTROL ECU. Refer to «REMOVAL»(ref-493387-S03692503262012081000000)

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 / All Data / Stop Light Switch and ST1. Check the Data List indication when the brake pedal is depressed and released.

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

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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 A3-2 - Body ground Always 11 to 14 V A3-4 - Body ground Ignition switch ON 11 to 14 V Reconnect the stop light switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STOP LIGHT SWITCH) OK: Go to next step
2. INSPECT STOP LIGHT SWITCH Inspect the stop light switch.Refer to «INSPECTION - Step 1»(ref-493453-S32829341342012081000000) . NG --> See step 4 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 A9-39 (ST1-) - Body ground Brake pedal released 11 to 14 V Brake pedal depressed 0 to 3 V A9-29 (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 5
4. REPLACE STOP LIGHT SWITCH. Refer to «REMOVAL»(ref-493453-S37294564642012081000000)
5. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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.

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 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.

Scheme 368

1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050A) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P050A is output A P050A and other DTCs are output B HINT: If any DTCs other than P050A are output, troubleshoot those DTCs first. NG --> See step 20 OK: Go to next step
2. READ VALUE USING TECHSTREAM (FUEL TRIM) HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. Connect the Techstream to the DLC3. Start the engine and warm it up. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Short FT #1 and Long FT #1. Read the values displayed on the Techstream. Add together the Short FT #1 and Long FT #1 values to obtain the total fuel trim. OK Total of Short FT #1 and Long FT #1 values is between -20% and 20%. NG --> See step 5 OK: Go to next step
3. INSPECT THROTTLE BODY Check for deposits around the throttle valve and check the throttle valve condition. OK No deposits around throttle valve and throttle valve moves smoothly. OK --> See step 14 NG --> See step 4
4. REPAIR OR REPLACE THROTTLE BODY Repair or replace the throttle body.Refer to «REMOVAL»(ref-493433-S25324289982012081000000) . NEXT --> See step 14
5. CHECK PCV HOSE Check the PCV hose connections.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493442-S03721092742012081000000) . OK PCV hose is connected correctly and is not damaged. NG --> See step 10 OK: Go to next step
6. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leaks.Refer to «ON-VEHICLE INSPECTION»(ref-493442-S42628386862012081000000) . OK No leaks in air induction system. NG --> See step 11 OK: Go to next step
7. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Visually check that the air cleaner filter element is not excessively contaminated with dirt or oil. OK Air cleaner filter element is not excessively contaminated with dirt or oil. NG --> See step 12 OK: Go to next step
8. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Tester Operation Specified Condition OCV OFF Normal engine speed OCV ON Engine idles roughly or stalls (soon after OCV switched from OFF to ON) NG --> See step 13 OK: Go to next step
9. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 rpm. Standard Between 9.38 g/sec. and 14.08 g/sec. (shift lever: N; A/C: Off). OK --> See step 14 NG --> See step 15
10. REPAIR OR REPLACE PCV SYSTEM Repair or replace the PCV hose. NEXT --> See step 14
11. REPAIR OR REPLACE AIR INDUCTION SYSTEM Repair or replace the air induction system. NEXT --> See step 14
12. REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Replace the air cleaner filter element sub-assembly. NEXT --> See step 14
13. CHECK AND REPAIR VVT SYSTEM Check and repair the VVT system. NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P050A) NOTE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Check that the engine coolant temperature is between -10°C and 50°C (14 and 122°F). 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: P050A. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P050A is output) B B --> See step 15 A --> See step 22
15. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM.Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-493289-S18206983812012081000000) . HINT: Repair any problems. NEXT: Go to next step
16. CHECK WHETHER DTC OUTPUT RECURS NOTE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Check that the engine coolant temperature is between -10°C and 50°C (14 and 122°F). 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: P050A. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P050A is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
17. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B1-5 (VG) - B30-94 (VG) Always Below 1 ohms B1-4 (E2G) - B30-117 (E2G) Always Below 1 ohms B1-5 (VG) or B30-94 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
18. REPLACE MASS AIR FLOW METER Replace the mass air flow meter.Refer to «REMOVAL»(ref-493433-S16373475662012081000000) . HINT: If the result of the inspection performed in step 9 indicated no problem, proceed to the next step without replacing the mass air flow meter assembly. NEXT: Go to next step
19. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED NOTE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Check that the engine coolant temperature is between -10°C and 50°C (14 and 122°F). 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: P050A. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P050A is output) B B --> See step 21 A --> END
20. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
21. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
22. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)

HINT

1. DTC P050B may be output when the engine has the symptoms listed below. If necessary, check the trouble areas listed below. Symptoms Factor Trouble Area Low idle speed when engine is cold (immediately after engine start) Excessive engine friction Engine oil deterioration Drive belt tension A/C compressor Generator Rough idle when engine is cold (immediately after engine start) Abnormal combustion Fuel quality
2. Read freeze frame data using the Techstream. 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.

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

Scheme 369

1. CHECK HARNESS AND CONNECTOR (ECM - BATTERY) Disconnect the cable from the negative (-) battery terminal. Disconnect the positive battery terminal. 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 Battery positive terminal (+) - A9-20 (BATT) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition Battery positive terminal (+) or A9-20 (BATT) - Body ground Always 10 kohms or higher 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
2. INSPECT BATTERY Check that the battery is not depleted. OK Battery is not depleted NG --> REPLACE BATTERY OK: Go to next step
3. 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
4. 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-493432-S34411502992012081000000) . Turn the ignition switch off and turn the Techstream off. Start the engine and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0560 A No output B B --> See step 5 A --> See step 6
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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

1. The following troubleshooting flowchart is based on the premise that the engine cranks normally. If the engine does not crank, proceed to the Problem Symptoms Table.Refer to «PROBLEM SYMPTOMS TABLE»(ref-493432-S01319624172012081000000) .
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.

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

Scheme 370

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 / All Data / Starter Signal. Check the value displayed on the Techstream when the ignition switch is turned to ON and START. OK Ignition Switch Position Starter Signal ON OFF START ON NG --> See step 2 OK --> See step 6
2. 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 (B) - 5 (L) Shift lever not in P or N 10 kohms or higher RESULT Result Proceed to OK A NG for 2WD B NG for 4WD C Reconnect the PNP switch connector. B --> See step 5 C --> See step 8 A: Go to next step
3. REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - ST RELAY, PNP SWITCH) Repair or replace the harness or connector between the ECM and ST relay or PNP switch. NEXT: Go to next step
4. 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-493432-S34411502992012081000000) . Drive the vehicle at more than 20 km/h (12.43 mph) for more than 20 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read DTCs. RESULT Result Proceed to DTC P0617 is output A DTC is not output B B --> END A --> See step 7
5. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(ref-493420-S19197613272012081000000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
8. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(ref-493417-S22262715152012081000000)

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.

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

HINT

1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 and P1605 are used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall. As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
2. If any other DTCs are output, perform troubleshooting for those DTCs first.
3. Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference. Symptom Suspected Area Engine vibration occurs and engine stops Air fuel ratio abnormal Engine stops with no engine vibration Ignition system, injection stoppage, high load from external parts Engine can be started with accelerator pedal depressed Insufficient air volume Rough idling after engine started Air fuel ratio abnormal, abnormal combustion
4. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) .
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 371

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 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.

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 372

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 373

Scheme 374

Scheme 375

Scheme 376

Scheme 377

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1603 AND/OR P1605) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . RESULT Result Proceed to DTC P1603 and/or P1605 is output A DTC P1603 or P1605 and other DTCs are output B B --> See step 61 A: Go to next step
2. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . RESULT Problem Symptom Freeze Frame Data Item Suspected Area Proceed to Closed Throttle Position SW Engine Speed Total of Short FT #1 and Long FT #1 When idling or decelerating, engine speed slowly decreases (and engine stalls) All 5 sets of freeze frame data are ON Decreases slowly*1 All 5 sets of freeze frame data are +15% or higher*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 higher. In the freeze frame data, the engine speed at #5 is 120 rpm or less. If the vehicle speed is 15 km/h (9 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 43 E --> See step 51 A: Go to next step
3. CHECK INTAKE SYSTEM Check for air leaks in the intake system (vacuum hose disconnection, cracks, damaged gaskets, etc.).Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493442-S03721092742012081000000) . HINT: If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder. If Short FT #1 and Long FT #1 are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leaks may be present. OK There are no air leaks. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
4. CHECK PURGE VSV Disconnect the fuel vapor feed 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. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . NG --> See step 62 OK: Go to next step
5. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 assembly 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 assembly may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the brake booster assembly (refer to step 58). When air leaks from the brake booster assembly 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 assembly. NG --> See step 63 OK: Go to next step
7. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 sub-assembly A AFS Voltage B1S1 3.3 V or higher*2 Air fuel ratio sensor Wire harness or connector Actual air fuel ratio abnormal B Both freeze frame data items listed above Values are other than above - C HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, 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 sub-assembly 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 SUB-ASSEMBLY Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. RESULT Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 24, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 12 A --> See step 72
9. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Gas AF Control / AFS Voltage B1S1 and O2S B1S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of the air fuel ratio and heated oxygen sensors displayed on the Techstream. 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 58). B --> See step 12 A: Go to next step
10. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Check the harnesses and connectors, referring to DTC P0031 inspection procedure.Refer to «PROCEDURE - Step 2»(ref-493440-S01652578812012081000000) . 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 64 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Check the harnesses and connectors, referring to DTC P2237 inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493439-S00190621542012081000000) . 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 65
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-493432-S08719650372012081000000) . 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 (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or higher*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-493432-S08719650372012081000000) . 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»(ref-493447-S23496158292012081000000) . 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 82
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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or higher Engine coolant temperature sensor A Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or higher 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, 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»(ref-493433-S23580260272012081000000) . 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 58). B --> See step 17 A --> See step 71
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-493432-S08719650372012081000000) . 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 TECSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) Disconnect the fuel vapor feed hose (on the canister side) of the purge VSV. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control. 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 58). B --> See step 22 A: Go to next step
19. INSPECT PURGE VSV Inspect the purge VSV.Refer to «INSPECTION»(ref-493428-S17009012732012081000000) . NG --> See step 66 OK: Go to next step
20. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV) Check the harnesses and connectors, referring to EVAP System inspection procedure.Refer to «PROCEDURE - Step 25»(ref-493439-S29284785732012081000000) . 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
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-493439-S29284785732012081000000) . 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 84
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. 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 (RESISTANCE) Inspect the fuel pump.Refer to «INSPECTION»(ref-493441-S08691618532012081000000) . NG --> See step 68 OK --> See step 85
24. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump, 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, remove the foreign matter. B --> See step 58 A --> REPAIR OR REPLACE FUEL SYSTEM
25. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Calculate Load 110% or higher of the current value of the vehicle*1 Mass air flow meter sub-assembly A AFS Voltage B1S1 Below 3.3 V*2 Air fuel ratio sensor Harness 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 sub-assembly is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake manifold, the freeze frame data will show a high engine load value. *2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air fuel ratio is rich, the actual air fuel ratio will become lean and the engine may stall. B --> See step 27 C --> See step 30 A: Go to next step
26. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. RESULT Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 34, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 30 A --> See step 86
27. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Gas AF Control / AFS Voltage B1S1 and O2S B1S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of the air fuel ratio and heated oxygen sensors displayed on the Techstream. 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 58). B --> See step 30 A: Go to next step
28. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Check the harnesses and connectors, referring to DTC P0031 inspection procedure.Refer to «PROCEDURE - Step 2»(ref-493440-S01652578812012081000000) . 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 69 OK: Go to next step
29. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Check the harnesses and connectors, referring to DTC P2237 inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493439-S00190621542012081000000) . 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 87
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-493432-S08719650372012081000000) . 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 (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or higher*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-493432-S08719650372012081000000) . 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 34 C --> See step 59 A: Go to next step
32. INSPECT THERMOSTAT Inspect the thermostat.Refer to «INSPECTION»(ref-493447-S23496158292012081000000) . 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 88
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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or higher Engine coolant temperature sensor A Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or higher 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, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 59 A: Go to next step
34. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor.Refer to «INSPECTION»(ref-493433-S23580260272012081000000) . 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 58). B --> See step 58 A --> See step 89
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-493432-S08719650372012081000000) . 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 with motor body assembly A 120% or higher 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 with motor 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 with motor 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 with motor body assembly and the intake air volume decreases, the ISC learning amount is increased to maintain the idle speed. If this situation continues, the ISC learning amount reaches the upper limit, the idle 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 WITH MOTOR BODY ASSEMBLY Check for foreign matter and signs that the throttle with motor 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 with motor body assembly may have been malfunctioning. Continue this inspection procedure until step 42, and if there are no problems with other parts, replace the throttle with motor body assembly (refer to step 58). B --> See step 38 A --> See step 90
37. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY Check if carbon is in the air flow passage of the throttle with motor body assembly. RESULT Result Proceed to Carbon in passage A No carbon in passage B HINT: Even if the results are normal, the throttle with motor body assembly may have been malfunctioning. Continue this inspection procedure until step 42, and if there are no problems with other parts, replace the throttle with motor body assembly (refer to step 58). B --> See step 38 A --> See step 91
38. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) Perform the Active Test, referring to DTC P0011 inspection procedure.Refer to «PROCEDURE - Step 2»(ref-493440-S14760840172012081000000) . 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 (for intake camshaft) is stuck at the advanced side, 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 70 OK: Go to next step
39. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Perform the Active Test, referring to DTC P0014 inspection procedure.Refer to «PROCEDURE - Step 2»(ref-493440-S41537869172012081000000) . 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 (for exhaust camshaft) is stuck at the retard side, 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 97 OK: Go to next step
40. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 deg or higher Below 3°CA Engine coolant temperature sensor Mass air flow meter sub-assembly Knock control sensor A 3°CA or higher - B Differs from the current value of the vehicle by less than 10 deg - - HINT: Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, 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 control sensors may have been malfunctioning. If there are no problems with other parts, replace the knock control sensors (refer to step 58). B --> See step 58 A: Go to next step
41. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor.Refer to «INSPECTION»(ref-493433-S23580260272012081000000) . RESULT Result Proceed to Normal A Abnormal B B --> See step 83 A: Go to next step
42. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY (INTAKE AIR TEMPERATURE SENSOR) Inspect the mass air flow meter sub-assembly (intake air temperature sensor).Refer to «INSPECTION»(ref-493433-S08396882632012081000000) . RESULT Result Proceed to Normal A Abnormal B B --> See step 81 A --> See step 92
43. CHECK TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to fuel injector circuit inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493439-S40311898002012081000000) . 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
44. CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY) Check the harnesses and connectors, referring to DTC P0351 inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000) . 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
45. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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°CA or higher Fuel injector system Ignition coil system A All cylinders show a value of less than 4°CA - B B --> See step 47 A: Go to next step
46. READ VALUE USING TECHSTREAM (IDLE SPARK ADVN CTRL #) Change the location of the ignition coil assembly for the cylinder whose Idle Spark Advn Ctrl (#1 to #4) was 4°CA or more in step 45. Connect the Techstream to the DLC3. 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 45 A Different from result in step 45 B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. B --> See step 96 A: Go to next step
47. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 B Changes from OFF to ON Power steering system A 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. 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 50, and if there are no problems with other parts, inspect the power steering system and the air conditioning system (refer to step 58). B --> See step 75 A: Go to next step
48. CHECK AUTOMATIC TRANSAXLE SYSTEM Start the engine. Move the shift lever to R and confirm that the vehicle can move rearward. OK The vehicle can move rearward. RESULT Result Proceed to OK A NG (for 2WD) B NG (for 4WD) C B --> See step 98 C --> See step 99 A: Go to next step
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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Electrical Load Signal 1 (3) Electric Load Feedback Val Difference between Engine Speed and SPD (NT) 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 Feedback Val changes - - Electrical load signal circuit A Value displayed for Electric Load Feedback Val does not change At least 1 of the 5 sets of freeze frame data is below 100 rpm Below 15 km/h (9 mph) A/T system (for 2WD) B A/T system (for 4WD) C 15 km/h (9 mph) or more - D All 5 sets of freeze frame data are 100 rpm or higher - - D 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 15 km/h (9 mph) A/T system (for 2WD) B A/T system (for 4WD) C 15 km/h (9 mph) or more - D All 5 sets of freeze frame data are 100 rpm or higher - - D 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 15 km/h (9 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 50, and if there are no problems with other parts, inspect the electrical load system and/or the A/T system (refer to step 58). B --> See step 76 C --> See step 100 D --> See step 50 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Shift SW Status (P or N Range) 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 assembly (for 2WD) A Park/neutral position switch assembly (for 4WD) B OFF when Shift SW Status D or R A/T system (for 2WD) C A/T system (for 4WD) D All 5 sets of freeze frame data are ON - - E HINT: Even if the results are normal, the park/neutral position switch assembly and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or A/T system (refer to step 58). B --> See step 101 C --> See step 77 D --> See step 100 E --> See step 58 A --> See step 94
51. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 sub-assembly A Calculate Load does not decrease while Throttle Sensor Position increases - B B --> See step 53 A: Go to next step
52. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Remove the mass air flow meter sub-assembly. Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly. RESULT Result Proceed to Visible foreign matter is present A Visible foreign matter is not present B HINT: Even if the results are normal, the mass air flow meter sub-assembly may have been malfunctioning. Continue this inspection procedure until step 57, and if there are no problems with other parts, replace the mass air flow meter sub-assembly (refer to step 58). B --> See step 53 A --> See step 86
53. CHECK TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to fuel injector circuit inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493439-S40311898002012081000000) . 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 78 OK: Go to next step
54. CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY) Check the harnesses and connectors, referring to DTC P0351 inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000) . 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 79 OK: Go to next step
55. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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. 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 57. B --> See step 57 A: Go to next step
56. INSPECT FUEL PUMP Inspect the fuel pump.Refer to «INSPECTION»(ref-493441-S08691618532012081000000) . NG --> See step 80 OK --> See step 95
57. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump, 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, remove the foreign matter. B --> See step 58 A --> REPAIR OR REPLACE FUEL SYSTEM
58. REPLACE MALFUNCTIONING PARTS If the malfunction could not be identified in steps 3 to 24, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 6 Brake booster assembly replacement Step 8 Mass air flow meter sub-assembly replacement Step 9 Air fuel ratio sensor replacement Step 16 Engine coolant temperature sensor replacement Step 18 Purge VSV replacement Step 24 Fuel pump replacement If the malfunction could not be identified in steps 25 to 34, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 26 Mass air flow meter sub-assembly replacement Step 27 Air fuel ratio sensor replacement Step 34 Engine coolant temperature sensor replacement If the malfunction could not be identified in steps 35 to 42, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 36, 37 Throttle with motor body assembly replacement Step 40 Knock control sensor replacement If the malfunction could not be identified in steps 43 to 50, inspect and repair the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 47 A/C system inspection and repair Power steering system inspection and repair Step 48 A/T system inspection and repair Step 49 Electrical load system inspection and repair A/T system inspection and repair Step 50 Park/neutral position switch inspection and repair A/T system inspection and repair If the malfunction could not be identified in steps 51 to 57, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed. Performed Step Inspection or Part to Replace Step 52 Mass air flow meter sub-assembly replacement HINT: Referring to the chart, inspect and repair or replace the part from the step where an inspection was performed. NEXT: Go to next step
59. CLEAR DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON. Clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . NEXT: Go to next step
60. 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
61. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
62. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-493428-S17009012732012081000000)
63. REPLACE BRAKE BOOSTER ASSEMBLY. Refer to «REMOVAL»(ref-493389-S06710939232012081000000)
64. REPAIR POWER SOURCE CIRCUIT (AIR FUEL RATIO SENSOR POWER SOURCE). Refer to «PROCEDURE - Step 2»(ref-493440-S01652578812012081000000)
65. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493433-S13636630482012081000000)
66. REPLACE PURGE VSV. Refer to «REMOVAL»(ref-493428-S16733670292012081000000)
67. REPAIR POWER SOURCE CIRCUIT (PURGE VSV POWER SOURCE). Refer to «PROCEDURE - Step 25»(ref-493439-S29284785732012081000000)
68. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-493441-S05028738562012081000000)
69. REPAIR POWER SOURCE CIRCUIT (AIR FUEL RATIO SENSOR POWER SOURCE). Refer to «PROCEDURE - Step 2»(ref-493440-S01652578812012081000000)
70. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT). Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
71. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
72. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
73. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-493439-S30634097582012081000000)
74. REPAIR IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000)
75. CHECK AIR CONDITIONING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493443-S40441511342012081000000)
76. CHECK AUTOMATIC TRANSAXLE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493434-S08465888822012081000000)
77. CHECK AUTOMATIC TRANSAXLE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493434-S08465888822012081000000)
78. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-493439-S30634097582012081000000)
79. REPAIR IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000)
80. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-493441-S05028738562012081000000)
81. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
82. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-493447-S38514207662012081000000)
83. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
84. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
85. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-493439-S03779139032012081000000)
86. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
87. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493433-S13636630482012081000000)
88. REPLACE THERMOSTAT. Refer to «REMOVAL»(ref-493447-S38514207662012081000000)
89. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
90. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
91. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
92. REPLACE KNOCK CONTROL SENSOR. Refer to «REMOVAL»(ref-493433-S36020757382012081000000)
93. CHECK GENERATOR CIRCUIT. Refer to «ON-VEHICLE INSPECTION»(ref-493436-S37024730132012081000000)
94. CHECK PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «INSPECTION»(ref-493420-S18155543002012081000000)
95. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-493439-S03779139032012081000000)
96. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
97. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
98. REPLACE AUTOMATIC TRANSAXLE ASSEMBLY. Refer to «REMOVAL»(ref-493420-S36678827112012081000000)
99. REPLACE AUTOMATIC TRANSAXLE ASSEMBLY. Refer to «REMOVAL»(ref-493417-S20365803582012081000000)
100. CHECK AUTOMATIC TRANSAXLE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493435-S34793097782012081000000)
101. CHECK PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «INSPECTION»(ref-493417-S31862850692012081000000)