Engine Control System (Diagnostic Codes (P1604-P2A00) & Circuit Tests): Other Scion xD I

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

Scheme 348

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. Wait 16 seconds or more.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P1607.
11. Check the DTC judgment result. Tester 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.
12. If the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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-388734-S06424090862011031100000) . Turn the ignition switch to OFF and turn the tester OFF. Disconnect the tester. Disconnect the cable from the battery negative (-) terminal and wait for 1 minute. Connect the cable to the battery negative (-) terminal. Connect the tester 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 No output A P1607 B B --> See step 3 A --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

P2102

P2103

P2102

P2103

Scheme 349

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 the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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. Tester 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 the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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, is set, 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° 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 350

ALL

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

Scheme 351

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 the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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. Tester 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 DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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, is set, 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° 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 to OFF.

1. 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 3 OK: Go to next step
2. 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-388734-S06424090862011031100000) . Refer to the confirmation driving pattern for P2111 and P2112. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to No output A P2111 or P2112 B B --> See step 4 A --> See step 5
3. REPAIR OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-388735-S12806086742011031100000)
4. REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)

COMPONENT OPERATING RANGE

Scheme 352

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 for 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 the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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. Tester 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] and [C] again.
14. If the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 set, 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° 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 353

Scheme 354

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 the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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. Tester 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 DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 set, 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° 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 to 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 the 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 5 A: Go to next step
2. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle body connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2(M+) - 1(M-) 20°C(68°F) 0.3 to 100 ohms Reconnect the throttle body connector. NG --> See step 6 OK: Go to next step
3. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000) NEXT: Go to next step
4. 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-388734-S06424090862011031100000) . Allow the engine to idle for 15 seconds or more. Refer to the confirmation driving pattern for P2119. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. OK No DTC output. HINT: The output voltage of the throttle position sensor can be checked using the Techstream. Variations in the output voltage indicate that the throttle actuator is in operation. To check the output voltage using the Techstream, Enter the following menus: Powertrain / Engine and ECT / ETCS / Throttle Position No. 1. NG --> See step 6 OK --> END
5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
6. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-388735-S12806086742011031100000)

P2120

P2122

P2123

P2125

P2127

P2128

P2138

Scheme 355

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 DTCs were cleared.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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 [C]. Tester 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] and [C] again.
13. If the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 set, 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 to OFF.

Scheme 356

Scheme 357

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 DTCs were cleared.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a 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. Tester 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] and [C] again.
13. If the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 to 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 the 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) See step 1 NG --> See step 3 OK --> See step 6
3. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly. Refer to «REMOVAL»(ref-388735-S04914580752011031100000) . 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-388734-S06424090862011031100000) . Start the engine. Refer to the confirmation driving pattern for P2121. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to P2121 A No output B B --> END A --> See step 5
5. REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)

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 .

CONFIRMATION DRIVING PATTERN

HINT

This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of the following diagnostic troubleshooting procedure.

Scheme 358

Scheme 359

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 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 8 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 the 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. Tester 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 [F] again.
20. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 360

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)

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

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)

Scheme 361

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 wait 2 minutes.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the 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. Tester 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 [C].
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-388734-S06424090862011031100000) . 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 C21-1 (HA1A) - C19-109 (HA1A) Always Below 1 ohms C21-3 (A1A+) - C19-112 (A1A+) C21-4 (A1A-) - C19-113 (A1A-) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C21-1 (HA1A) or C19-109 (HA1A) - Body ground Always 10 kohms or higher C21-3 (A1A+) or C19-112 (A1A+) - Body ground C21-4 (A1A-) or C19-113 (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-388735-S05886652062011031100000) . NEXT: Go to next step
3. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle to Confirmation Driving Pattern on DTC P2195. Refer to «CONFIRMATION DRIVING PATTERN»(ref-388739-S18777418492011031100000) . 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. Refer to the confirmation driving pattern for P2237, P2238, P2239, P2252 and P2253. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to No output A P2237, P2238, P2239, P2252 or P2253 B B --> See step 5 A --> END
5. REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Scheme 362

Note. The Evaporative System Check (Automatic Mode) consists of 5 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 [A].
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 [B]. Tester 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-388734-S06424090862011031100000) . 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)

Scheme 363

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 10 minutes or more.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
9. Read the 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. Tester 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-388734-S06424090862011031100000) . 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-388735-S27161698942011031100000) . 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-388734-S06424090862011031100000) . Refer to the confirmation driving pattern for P2610. 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

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

HINT

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

Scheme 364

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. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details.
8. Check that RES RATE B1S1 is Incomplete.
9. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or higher) [A].
10. Drive the vehicle at a constant speed between 40 and 120 km/h (25 and 75 mph) for 3 minutes [B]. NOTE: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
11. Check the monitor result values on the Techstream by entering the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RES RATE B1S1.
12. If the values indicated on the Techstream do not change, perform READINESS MONITOR DRIVE PATTERN for the A/F sensor and heated oxygen sensor. Refer to «READINESS MONITOR DRIVE PATTERN»(ref-388734-S30606484762011031100000) .
13. Note the value of the Monitor Result.
14. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
15. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
16. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
17. Input the DTC: P2A00.
18. Check the DTC judgment result. Tester 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.
19. 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-388734-S06424090862011031100000) . 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 DTC P2A00) 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 P2A00 A P2A00 and other DTCs B HINT: If any DTCs other than P2A00 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
2. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-388738-S38655170662011031100000) NG --> See step 10 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle to Confirmation Driving Pattern. NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Refer to the confirmation driving pattern for P2A00. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to P2A00 A No output B B --> See step 11 A: Go to next step
6. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-388735-S05886652062011031100000) . NEXT: Go to next step
7. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle to Confirmation Driving Pattern. NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Refer to the confirmation driving pattern for P2A00. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to No output A P2A00 B B --> See step 12 A --> END
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
10. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-388735-S05886652062011031100000)
11. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
12. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO. Refer to «INSPECTION PROCEDURE»(ref-388738-S05948496422011031100000)

RELATED DTCS

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

Scheme 365

Note. If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.

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 8000 ft (2432 m) The Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F) The Intake Air Temperature (IAT) 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 to OFF and wait for 5 to 10 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 / Evaporative System. Check the Monitor Status displayed on the tester. HINT: If Incomplete is displayed, the monitor is not completed. 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 ECT is between 4.4°C and 35°C (40°F and 95°F) The IAT is between 4.4°C and 35°C (40°F and 95°F) Monitor Conditions Release the pressure from the fuel tank by removing and reinstalling the fuel cap. Warm the engine up until the ECT reaches more than 75°C (167°F). Increase the engine speed to 3000 rpm once. Allow the engine to idle and the ON for 1 minute. Monitor Status Turn the ignition switch to OFF (if ON or 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. Check the Monitor Status displayed on the tester. HINT: If Incomplete is displayed, the monitor is not completed. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .