Engine Control System (Diagnostic Codes (P1604-P2610) & Circuit Tests)): Other Scion xB II рестайлинг

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

CONFIRMATION DRIVING PATTERN

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

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the Techstream off.
5. Turn the ignition switch off.
6. Disconnect the Techstream.
7. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
8. Connect the cable to the negative (-) battery terminal.
9. Connect the Techstream to the DLC3.
10. Turn the ignition switch to ON and turn the Techstream on.
11. Wait 16 seconds or more.
12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
13. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
14. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P1607.
16. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the judgment result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

PROCEDURE

1. READ OUTPUT DTC (DTC P1607) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and turn the Techstream off. Disconnect the Techstream. Disconnect the cable from the battery negative (-) terminal and wait for 1 minute. Connect the cable to the battery negative (-) terminal. Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Wait 16 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read pending DTCs. RESULT Result Proceed to No DTCs output A P1607 B B --> See step 3 A --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

ALL

P2102

P2103

P2102

P2103

Scheme 188

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine.
7. With the vehicle stationary, fully depress the accelerator pedal and quickly release it [B].
8. Check that 16 seconds or more have elapsed from the instant when the accelerator pedal is first depressed.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
10. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P2102 or P2103.
13. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] through [C] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

FAIL-SAFE

When either of these DTCs or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6.5° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

Scheme 189

ALL

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

Scheme 190

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P2111 or P2112.
11. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When either of these DTCs or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6.5° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) 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 P2111 or P2112 A P2111 or P2112 and other DTCs B HINT: If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first. B --> See step 7 A: Go to next step
2. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body and check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> See step 4 OK: Go to next step
3. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command. Check the values displayed on the Techstream while wiggling the ECM wire harness. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check for DTCs. RESULT Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output * A Other than above B * : As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-511289-S39503723992012102600000) . B --> See step 5 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY - ECM)
4. REPLACE THROTTLE BODY Replace the throttle body assembly. Refer to «REMOVAL»(ref-511385-S41241468102012102600000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine, and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve). Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P2111 or P2112 B B --> See step 6 A --> END
6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)

COMPONENT OPERATING RANGE

Scheme 191

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine.
7. Slowly depress the accelerator pedal, raise the engine speed to approximately 3000 RPM over approximately 5 seconds, and then idle the engine [B].
8. Check that 16 seconds or more have elapsed since the engine was started.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
10. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P2118.
13. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] through [C] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When this DTC, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6.5° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned to OFF.

Scheme 192

Scheme 193

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 20 seconds.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
9. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2119.
12. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, fully depress and release the accelerator pedal 3 times, and then check the DTC judgment result [C].
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When this DTC, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6.5° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) 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 P2119 A P2119 and other DTCs B HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first. B --> See step 8 A: Go to next step
2. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position Command. Check the values displayed on the Techstream while fully depressing and releasing the accelerator pedal quickly. RESULT Result Proceed to Throttle Position No. 1 does not change A Throttle Position No. 1 changes even a little B HINT: When a DTC is output, the system changes to fail-safe mode. Therefore, only use the data up until the time the DTC is stored for confirmation. B --> See step 4 A: Go to next step
3. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Inspect the throttle body assembly. Refer to «INSPECTION»(ref-511385-S17878118562012102600000) . NG --> See step 6 OK: Go to next step
4. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and housing. If necessary, clean the throttle body. Also, check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> See step 6 OK: Go to next step
5. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command. Check the values displayed on the Techstream while wiggling the ECM wire harness. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check for DTCs. RESULT Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output * A Other than above B * : As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-511289-S39503723992012102600000) . B --> See step 7 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY - ECM)
6. REPLACE THROTTLE BODY Replace the throttle body assembly. Refer to «REMOVAL»(ref-511385-S41241468102012102600000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Allow the engine to idle for 20 seconds or more. Fully depress and release the accelerator pedal several times quickly. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P2119 B B --> See step 9 A --> END
8. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

P2120

P2122

P2123

P2125

P2127

P2128

P2138

Scheme 194

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Fully depress and release the accelerator pedal [B].
7. Check that 5 seconds or more have elapsed since the ignition switch was turned to ON.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2120, P2122, P2123, P2125, P2127, P2128 or P2138.
12. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] through [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When any of DTCs P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 are stored, the ECM enters fail-safe mode. If either of the 2 sensor circuits malfunctions, the ECM uses the remaining circuit to calculate the accelerator pedal position to allow the vehicle to continue driving. If both of the circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is turned off.

Scheme 195

Scheme 196

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Fully depress and release the accelerator pedal [B].
7. Check that 20 seconds or more have elapsed since the ignition switch was turned to ON.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2121.
12. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] through [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

The accelerator pedal position sensor has two (main and sub) sensor circuits. If a malfunction occurs in either of the sensor circuits, the ECM detects the abnormal signal voltage difference between the two sensor circuits and switches to fail-safe mode. In fail-safe mode, the functioning circuit is used to calculate the accelerator pedal opening angle to allow the vehicle to continue driving. If both circuits malfunction, the ECM regards the opening angle of the accelerator pedal as being fully closed. In this case, the throttle valve remains closed as if the engine is idling.

If a pass condition is detected and then the ignition switch is turned off, the fail-safe operation stops and the system returns to a normal condition.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2121) 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 P2121 A P2121 and other DTCs B HINT: If any DTCs other than P2121 are output, troubleshoot those DTCs first. B --> See step 7 A: Go to next step
2. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) 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 / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the values displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Difference between Accel Sensor Out No. 1 and Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V 0.4 to 1.2 V Depressed 2.6 to 4.5 V 3.4 to 4.8 V TEXT IN ILLUSTRATION *a Depressed *b Released NG --> See step 3 OK --> See step 6
3. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly. Refer to «REMOVAL»(ref-511385-S19731498332012102600000) . NEXT: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to P2121 A No output B B --> END A --> See step 5
5. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)

ALL

SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION P2195)

SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION P2196)

SENSOR CURRENT DETECTION MONITOR (P2195, P2196)

SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION P2195)

SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION P2196)

SENSOR CURRENT DETECTION MONITOR (HIGH SIDE MALFUNCTION P2195)

SENSOR CURRENT DETECTION MONITOR (LOW SIDE MALFUNCTION P2196)

MONITOR RESULT

Refer to Checking Monitor Status. Refer to CHECKING MONITOR STATUS .

Scheme 197

This confirmation driving pattern is used in the "Perform Confirmation Driving Pattern" procedure of the following diagnostic troubleshooting procedure.

Scheme 198

Scheme 199

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON and turn the Techstream on.
7. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [A].
8. On the Techstream, enter the following menus to check the fuel-cut status: Powertrain / Engine and ECT / Data List / Idle Fuel Cut.
9. Drive the vehicle at a speed between 60 and 120 km/h (38 and 75 mph) for at least 10 minutes [B]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
10. Shift the transmission to 2nd gear [C].
11. Accelerate the vehicle to 64 km/h (40 mph) or more by depressing the accelerator pedal for at least 10 seconds [D]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
12. Soon after performing step [D] above, release the accelerator pedal for at least 4 seconds without depressing the brake pedal in order to execute fuel-cut control [E]. HINT: Fuel-cut is performed when the following conditions are met: Accelerator pedal is fully released. Engine speed is 2500 RPM or more (fuel injection returns at 1000 RPM).
13. Allow the vehicle to decelerate until the vehicle speed decreases to less than 10 km/h (6 mph).
14. Repeat steps [C] through [E] above at least 3 times in one driving cycle.
15. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [F].
16. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
17. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
18. Input the DTC: P2195 or P2196.
19. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] through [F] again.
20. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195 OR P2196) 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 P2195 or P2196 A P2195 or P2196, and P0136, P0137 or P0138 A P2195 or P2196 and other DTCs B HINT: If any DTCs relating to the air fuel ratio sensor (DTCs for the air fuel ratio sensor heater or air fuel ratio sensor admittance) are output, troubleshoot those DTCs first. B --> See step 17 A: Go to next step
2. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST Has the vehicle run out of fuel in the past? NO --> See step 4 YES: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195 OR P2196) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check the DTC judgment. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195 or P2196 is output) B B --> See step 4 A --> DTC CAUSED BY RUNNING OUT OF FUEL
4. READ VALUE USING TECHSTREAM (TEST VALUE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / O2 Sensor / Current. Check that the status of O2 Sensor is Complete. If the status is still Incomplete, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / O2 Sensor / Details / RANGE B1 S1. Check the test value of the A/F sensor output current during fuel-cut. RESULT Result Proceed to Within normal range (1.0 mA or more, and less than 3.6 mA) A Outside normal range (Less than 1.0 mA, or 3.6 mA or more) B B --> See step 14 A: Go to next step
5. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the air fuel ratio sensor at an engine speed of 2500 RPM for 90 seconds. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Perform the Control the Injection Volume operation with the engine idling. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 (A/F) +12% Rich Less than 3.1 V -12% Lean More than 3.4 V O2S B1S2 (HO2) +12% Rich More than 0.55 V -12% Lean Less than 0.4 V RESULT Status of AFS Voltage B1S1 Status of O2S B1S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Proceed to Lean Lean Actual air fuel ratio lean A Rich Rich Actual air fuel ratio rich A Lean Lean/Rich Air fuel ratio sensor malfunction B Rich Lean/Rich Air fuel ratio sensor malfunction B Lean/Rich Lean/Rich Normal B Lean: During the Control the Injection Volume Active Test, the air fuel ratio sensor output voltage (AFS Voltage) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2S) is consistently below 0.4 V. Rich: During the Control the Injection Volume Active Test, the AFS Voltage is consistently below 3.1 V, and the O2S is consistently higher than 0.55 V. Lean/Rich: During the Control the Injection Volume Active Test, the output voltage of the heated oxygen sensor alternates correctly. HINT: Refer to "Data List / Active Test" [AFS Voltage B1S1, AFS Voltage B2S1, O2S B1S2 and O2S B2S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) . B --> See step 14 A: Go to next step
6. CHECK INTAKE SYSTEM Check the intake system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511394-S02699951012012102600000) . OK No leak from intake system. NG --> See step 18 OK: Go to next step
7. CHECK EXHAUST GAS LEAK Check for exhaust gas leak. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
8. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . NG --> See step 16 OK: Go to next step
9. INSPECT FUEL INJECTOR Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION - Step 1»(ref-511393-S01840439762012102600000) . NG --> See step 19 OK: Go to next step
10. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-511385-S03018773852012102600000) . NEXT: Go to next step
11. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195 OR P2196) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check the DTC judgment. RESULT Result Proceed to ABNORMAL (DTC P2195 or P2196 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
12. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000) . NEXT: Go to next step
13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check the DTC judgment. RESULT Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit NEXT --> END
14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-511385-S03018773852012102600000) . NEXT: Go to next step
15. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check the DTC judgment. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195 or P2196 is output) B B --> See step 20 A --> END
16. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 21
17. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
18. REPAIR OR REPLACE INTAKE SYSTEM. Refer to «REMOVAL»(ref-511404-S26851381792012102600000)
19. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
20. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
21. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)

P2237, P2238

P2239, P2252, P2253

P2237 (A/F SENSOR OPEN CIRCUIT BETWEEN A1A+ AND A1A-)

P2238 (A/F SENSOR LOW IMPEDANCE)

OTHER

P2237 (A/F SENSOR OPEN CIRCUIT BETWEEN A1A+ AND A1A-)

P2238 (A/F SENSOR LOW IMPEDANCE)

P2238 (A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND GND)

P2239 (A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND +B)

P2252 (A/F SENSOR SHORT CIRCUIT BETWEEN A1A- AND GND)

P2253 (A/F SENSOR SHORT CIRCUIT BETWEEN A1A- AND +B)

P2238 (A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND A1A-)

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine and wait 2 minutes.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
8. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P2237, P2238, P2239, P2252 or P2253.
11. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or UNKNOWN, idle the engine for 3 minutes and check the DTC judgment result again.
12. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

1. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B19-1 (HA1A) - B33-109 (HA1A) Always Below 1 ohms B19-3 (A1A+) - B33-112 (A1A+) B19-4 (A1A-) - B33-113 (A1A-) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B19-1 (HA1A) or B33-109 (HA1A) - Body ground Always 10 kohms or higher B19-3 (A1A+) or B33-112 (A1A+) - Body ground B19-4 (A1A-) or B33-113 (A1A-) - Body ground Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-511385-S03018773852012102600000) . NEXT: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read pending DTCs. RESULT Result Proceed to No output A P2237, P2238, P2239, P2252 or P2253 B B --> See step 4 A --> END
4. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

Refer to Checking Monitor Status. Refer to CHECKING MONITOR STATUS .

Note. The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature below 35°C (95°F).

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Enter the following menu items: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
7. After the "Evaporative System Check" is completed, check All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
8. Input the DTC: P2420.
9. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
10. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

TIMER MALFUNCTION

TIMER START-UP MALFUNCTION (CASE 1)

TIMER START-UP MALFUNCTION (CASE 2)

TIMER MALFUNCTION

TIMER START-UP MALFUNCTION (CASE 1)

TIMER START-UP MALFUNCTION (CASE 2)

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine.
7. Idle the engine for 10 minutes or more.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
9. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2610.
12. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
13. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

1. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000) . NEXT: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2610) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine and wait for 10 minutes or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. If no pending DTC is displayed, the repair has been successfully completed. NEXT --> END

RELATED DTCS

If any EVAP system DTCs are output, the malfunctioning area can be determined using the table below.

Scheme 200

Note. If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P0441, P0455, P0456, P2401, P2420) will all be stored.

Scheme 201

TEXT IN ILLUSTRATION

HINT

The canister pressure sensor, the leak detection pump and the vent valve are built into the canister pump module.

Scheme 202

TEXT IN ILLUSTRATION

Note. In the EVAP system of this vehicle, turning ON the vent valve does not seal off the EVAP system. To check for leaks in the EVAP system, disconnect the air inlet vent hose and apply pressure from atmospheric side of the canister.

While the engine is running, if a predetermined condition (closed-loop, etc.) is met, the purge VSV is opened by the ECM and fuel vapors stored in the canister are purged to the intake manifold. The ECM changes the duty cycle ratio of the purge VSV to control purge flow volume.

The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is allowed into the canister through the vent valve to ensure that the purge flow is maintained when negative pressure (vacuum) is applied to the canister.

The following two monitors run to confirm appropriate EVAP system operation.

Scheme 203

Scheme 204

Scheme 205

Scheme 206

1. Key-off monitor This monitor checks for EVAP (evaporative emission) system leaks and canister pump module malfunctions. The monitor starts 5 hours* after the ignition switch is turned off. At least 5 hours are required for the fuel to cool down to stabilize the EVAP pressure, thus making the EVAP system monitor more accurate. The leak detection pump creates negative pressure (vacuum) in the EVAP system and the pressure is measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the canister pump module and purge VSV based on the EVAP pressure. HINT: *: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the ignition switch is turned off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the ignition switch is turned off, the monitor check starts 2.5 hours later.
2. Purge flow monitor The purge flow monitor consists of the 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary. The 1st monitor While the engine is running and the purge VSV (Vacuum Switching Valve) is on (open), the ECM monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not created, the ECM begins the 2nd monitor. The 2nd monitor The vent valve is turned ON (closed) and the EVAP pressure is then measured. If the variation in the pressure is less than 0.4 kPa(gauge) [3.0 mmHg(gauge)], the ECM interprets this as the purge VSV being stuck closed, and illuminates the MIL and stores DTC P0441 (2 trip detection logic). Atmospheric pressure check: In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before and after of the purge flow monitor, is measured by the ECM. TEXT IN ILLUSTRATION *1 ECM *2 Soak Timer *3 Purge VSV (on) *4 Fuel Cap *5 Canister Filter *6 Fuel Tank *7 Leak Detection Pump (off) *8 Canister Pressure Sensor *9 Reference Orifice (0.02 inch) *10 Vent Valve (off) *11 Canister Pump Module *12 Canister *13 Refueling Valve - - *a EVAP Purge Flow *b to Intake Manifold *c to Atmosphere - - Component Operation Canister Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank. Cut-off valve Located in fuel tank. Valve floats and closes when fuel tank is 100% full. Purge VSV (Vacuum Switching Valve) Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge VSV. EVAP discharge volume to intake manifold controlled by purge VSV duty cycle (current-carrying time). (Open: on, Close: off) Refueling Valve Controls EVAP pressure from fuel tank to canister. Valve consists of diaphragm, spring and restrictor (diameter: 0.08 inch). When fuel vapor and pressure inside fuel tank increase, valve opens. While EVAP purged, valve closes and restrictor prevents large amount of vacuum from affecting pressure in fuel tank. Valve opened while refueling. Roll-over valve Located in fuel tank. Valve closes by its own weight when vehicle overturns to prevent fuel from spilling out. Soak timer Built into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/-15 min) after ignition switch is turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates ( see scheme 3see scheme 3 ). Canister pump module Consists of (a) to (d) below. Canister pump module cannot be disassembled. (a) Vent valve Vents and closes EVAP system. When ECM turns valve on, EVAP system is closed. When ECM turns valve off, EVAP system is vented. Negative pressure (vacuum) is created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closing it) and operating leak detection pump ( see scheme 11 ). (b) Canister pressure sensor Indicates pressure as voltages. ECM supplies regulated 5 V to pressure sensor, and uses feedback from sensor to monitor EVAP system pressure ( see scheme 2see scheme 3 ). (c) Leak detection pump Creates negative pressure (vacuum) in EVAP system for leak check. (d) Reference orifice Has opening with 0.02 inch diameter. Vacuum is produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure indicates a small leak of EVAP. TEXT IN ILLUSTRATION *1 Canister *2 Reference Orifice (0.02 Inch) *3 Canister Pressure Sensor - - *a Canister Pump Module see scheme 1 *b Airflow *c Condition: Purge Flow *d Condition: Leak Check *e Vent Valve: off (vent) *f to Canister Filter (Atmosphere) *g Leak Detection Pump: off *h Vent Valve: on (closed) *i Leak Detection Pump: on *j from Refueling Valve

Scheme 207

HINT

After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor Confirmation described below.

1. KEY-OFF MONITOR CONFIRMATION Preconditions The monitor will not run unless: The vehicle has been driven for 10 minutes or more (in a city area or on a freeway). The fuel tank is less than 90% full. The altitude is less than 7875 ft. (2400 m). The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F). The intake air temperature is between 4.4°C and 35°C (40°F and 95°F). The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]). Monitor Conditions Allow the engine to idle for at least 5 minutes. Turn the ignition switch off and wait for 6 hours (8 or 10.5 hours). HINT: Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated. Monitor Status Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.
2. PURGE FLOW MONITOR CONFIRMATION (P0441) HINT: Perform this monitor confirmation after the Key-Off Monitor Confirmation shows Complete. Preconditions The monitor will not run unless: The vehicle has been driven for 10 minutes or more (in a city area or on a freeway). The engine coolant temperature is 4.4°C (40°F) or higher. The intake air temperature is 4.4°C (40°F) or higher. Monitor Conditions Release the pressure from the fuel tank by removing and reinstalling the fuel cap. Warm the engine up until the engine coolant temperature reaches more than 75°C (167°F). Increase the engine speed to 3000 RPM once. Allow the engine to idle and turn the A/C switch on for 1 minute. Monitor Status Turn the ignition switch off (if ON or if the engine is running). Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor did not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

Refer to Checking Monitor Status. Refer to CHECKING MONITOR STATUS .

1. CHECK WHETHER ENGINE CAN BE CRANKED Check if the engine can be cranked. RESULT Result Proceed to Engine cannot be cranked A Engine can be cranked B B --> See step 10 A: Go to next step
2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions. OK Ignition Switch Position Starter Signal ON Close (Starter signal OFF) START Open (Starter signal ON) NG --> See step 6 OK: Go to next step
3. INSPECT IGNITION SWITCH Inspect the ignition switch. Refer to «INSPECTION - Step 1»(ref-511390-S22434263152012102600000) . NG --> See step 17 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - ST RELAY - STARTER) Remove the ST relay from the center relay block. Disconnect the ignition switch connector. Disconnect the starter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C5-8 (ST2) - 5 (ST relay) Always Below 1 ohms 3 (ST relay) - B8-1 (Starter) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C5-8 (ST2) or 5 (ST relay) - Body ground Always 10 kohms or higher 3 (ST relay) or B8-1 (Starter) - Body ground Always 10 kohms or higher Reinstall the ST relay. Reconnect the ignition switch connector. Reconnect the starter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND) Remove the ST relay from the center relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A36-48 (STA) - 2 (ST relay) Always Below 1 ohms 1 (ST relay) - Body ground Always Below 1 ohms Reinstall the ST relay. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
6. INSPECT IGNITION SWITCH Inspect the ignition switch. Refer to «INSPECTION - Step 1»(ref-511390-S22434263152012102600000) . NG --> See step 16 OK: Go to next step
7. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH For A/T models: Inspect the park/neutral position switch. Refer to «INSPECTION - Step 1»(ref-511376-S05406739622012102600000) . For M/T models: Inspect the clutch start switch. Refer to «INSPECTION - Step 1»(ref-511391-S14814416782012102600000) . RESULT Result Proceed to OK A NG (M/T models) B NG (A/T models) C B --> See step 15 C --> See step 14 A: Go to next step
8. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - PNP SWITCH OR CLUTCH START SWITCH) For A/T models: Disconnect the ignition switch connector. Disconnect the park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C5-1 (ST1) - B16-4 (B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C5-1 (ST1) or B16-4 (B) - Body ground Always 10 kohms or higher Reconnect the ignition switch connector. Reconnect the park/neutral position switch connector. For M/T models: Disconnect the ignition switch connector. Disconnect the clutch start switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C5-1 (ST1) - A4-2 (Clutch start switch) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C5-1 (ST1) or A4-2 (Clutch start switch) - Body ground Always 10 kohms or higher Reconnect the ignition switch connector. Reconnect the clutch start switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (ST RELAY - ECM - PNP SWITCH OR CLUTCH START SWITCH) For A/T models: Remove the ST relay from the center relay block. Disconnect the ECM connector. Disconnect the park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B16-5 (L) - A36-48 (STA) Always Below 1 ohms A36-48 (STA) - 2 (ST relay) Always Below 1 ohms 1 (ST relay) - Body ground Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-5 (L) or A36-48 (STA) - Body ground Always 10 kohms or higher Reinstall the ST relay. Reconnect the ECM connector. Reconnect the park/neutral position switch connector. For M/T models: Remove the ST relay from the center relay block. Disconnect the ECM connector. Disconnect the clutch start switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A4-1 (Clutch start switch) - A36-48 (STA) Always Below 1 ohms A36-48 (STA) - 2 (ST relay) Always Below 1 ohms 1 (ST relay) - Body ground Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A4-1 (Clutch start switch) or A36-48 (STA) - Body ground Always 10 kohms or higher Reinstall the ST relay. Reconnect the ECM connector. Reconnect the clutch start switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
10. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions. OK Ignition Switch Position Starter Signal ON OFF START ON NG --> See step 11 OK --> See step 13
11. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY) Remove the ST relay from the center relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A36-48 (STA) - 2 (ST relay) Always Below 1 ohms Reinstall the ST relay. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
12. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
13. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-511384-S26307350452012102600000)
14. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(ref-511376-S13470537822012102600000)
15. REPLACE CLUTCH START SWITCH. Refer to «REMOVAL»(ref-511391-S29926180982012102600000)
16. REPLACE IGNITION SWITCH. Refer to «REMOVAL»(ref-511390-S22168220562012102600000)
17. REPLACE IGNITION SWITCH. Refer to «REMOVAL»(ref-511390-S22168220562012102600000)

1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: System Select / Health Check. Check DTCs. RESULT Result Proceed to No DTC output A DTC output B B --> GO TO DTC CHART A: Go to next step
2. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH AND ST1) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Stop Light Switch and ST1. Check the Data List indication when the brake pedal is depressed and released. OK Techstream Display Condition Specified Condition Stop Light Switch Brake pedal released OFF Brake pedal depressed ON ST1 Brake pedal released OFF Brake pedal depressed ON NG --> See step 10 OK: Go to next step
3. INSPECT BRAKE PEDAL Inspect and adjust the brake pedal. Refer to «ADJUSTMENT»(ref-511383-S37672282752012102600000) . HINT: If the stop light switch turns ON too late, the start of brake override system control may be delayed; if it turns ON too soon, brake override system control may begin too early, so conduct inspection of the brake pedal and stop light switch. NG --> See step 9 OK: Go to next step
4. READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Accel Sens. No. 1 Volt % and Accel Sens. No. 2 Volt %. Read the value displayed on the Techstream. OK Techstream Display Condition Specified Condition Accel Sens. No. 1 Volt % Accelerator Pedal Released --> Depressed --> Released Values smoothly change following accelerator pedal operation Accel Sens. No. 2 Volt % HINT: For numerical values of Accel Sens. No. 1 Volt % and Accel Sens. No. 2 Volt %, refer to the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) . NG --> See step 8 OK: Go to next step
5. READ VALUE USING TECHSTREAM (VEHICLE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed. Read the value displayed on the Techstream. Standard Techstream Display Condition Specified Condition Vehicle Speed Vehicle stopped, engine running 0 km/h (0 mph) Vehicle running at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test. NG --> See step 7 OK: Go to next step
6. READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed. Read the value displayed on the Techstream. Standard Techstream Display Condition Specified Condition FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed Vehicle stopped, engine running 0 km/h (0 mph) Vehicle running at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test. NG --> INSPECT FRONT OR REAR SPEED SENSOR OK --> END
7. GO TO VEHICLE SPEED SENSOR "A". Refer to «INSPECTION PROCEDURE»(ref-511388-S14901647752012102600000)
8. REPLACE ACCELERATOR PEDAL ASSEMBLY. Refer to «REMOVAL - Step 1»(ref-511385-S14667942492012102600000)
9. REPAIR OR REPLACE BRAKE PEDAL. Refer to «REMOVAL»(ref-511383-S17444736482012102600000)
10. INSPECT STOP LIGHT SWITCH. Refer to «INSPECTION - Step 1»(ref-511401-S24136642082012102600000)