Engine Control (Sfi) (Diagnostic Codes (P0455-P2A00) & Circuit Tests): Other Lexus LX J200

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

P0455 (PATTERN 1), P0456

P0455 (PATTERN 2)

TYPICAL MALFUNCTION THRESHOLDS

P0455 (PATTERN 1)

P0455 (PATTERN 2)

P0456

MONITOR RESULT

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

Scheme 222

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0505 is output A P0505 and other DTCs are output B HINT: If any DTCs other than P0505 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 6 OK: Go to next step
3. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from air induction system. NG --> See step 7 OK: Go to next step
4. CHECK THROTTLE VALVE Check the throttle valve condition. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> See step 8 OK --> See step 9
5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
6. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-385179-S06651788502011021400000)
7. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-385209-S10769205742011021400000)
8. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-385180-S20571009392011021400000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTCS OK Any other DTCs are not output. NG --> See step 16 OK: Go to next step
2. READ VALUE USING TECHSTREAM (FUEL TRIM) HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2. Read the values displayed on the Techstream. Add together the Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values to obtain the total fuel trim. Result Total of Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values is between -20% and 20%. NG --> See step 4 OK: Go to next step
3. CHECK THROTTLE BODY Check for deposits around the throttle valve and throttle valve condition. OK No deposits around throttle valve and throttle valve moves smoothly. OK --> See step 9 NG --> See step 8
4. CHECK VVT SYSTEM Allow the engine to idle after the engine is warmed up. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2). Turn on Control the VVT System (Bank 1) or Control the VVT System (Bank 2) to advance the valve timing. Check the engine condition. OK The engine stalls or idles roughly when Control the VVT System is ON (VVT system is OK). NG --> See step 10 OK: Go to next step
5. CHECK PCV SYSTEM Allow the engine to idle. Pinch the positive crankcase ventilation (PCV) hose. Check the engine speed. OK The engine speed rises when the PCV hose is pinched. NG --> See step 11 OK: Go to next step
6. CHECK AIR CLEANER FILTER Visually check that the air cleaner filter is not excessively contaminated with dirt or oil. NG --> See step 12 OK: Go to next step
7. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK --> See step 14 NG --> See step 13
8. REPAIR OR REPLACE THROTTLE BODY Repair or replace the throttle body. Refer to «REMOVAL»(ref-385180-S20571009392011021400000) . NEXT --> See step 15
9. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000) . NEXT --> See step 15
10. CHECK AND REPAIR VVT SYSTEM NEXT --> See step 15
11. REPAIR OR REPLACE PCV HOSE NEXT --> See step 15
12. REPLACE AIR CLEANER FILTER NEXT --> See step 15
13. REPAIR OR REPLACE AIR INDUCTION SYSTEM NEXT --> See step 15
14. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-385180-S06546023872011021400000) . NEXT: Go to next step
15. CHECK DTCS Check that the engine coolant temperature is -10 to 50°C (14 to 122°F). Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Enter the check mode using the Techstream. Refer to «CHECK MODE PROCEDURE»(ref-385195-S37337289382011021400000) . Allow the engine to idle for 1 minute. Check that no DTC is output. NEXT --> END
16. GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050B) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to P050B A P050B and other DTCs B HINT: If any DTCs other than P050B are output, troubleshoot those DTCs first. B --> See step 16 A: Go to next step
2. READ VALUE USING TECHSTREAM (FUEL TRIM) HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2. Read the values displayed on the Techstream. Add together the Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values to obtain the total fuel trim. OK Total of Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values is between -20% and 20%. NG --> See step 5 OK: Go to next step
3. CHECK THROTTLE BODY Check that there are no deposits around the throttle valve. OK No deposits around the throttle valve. NG --> See step 10 OK: Go to next step
4. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000) . NEXT --> See step 15
5. PERFORM ACTIVE TEST USING TECHSTREAM (OCV OPERATION) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Operation Specified Condition OCV OFF Normal engine speed OCV ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls NG --> See step 11 OK: Go to next step
6. CHECK PCV SYSTEM Start the engine. Pinch the PCV hose. Check the engine speed. OK The engine speed rises when the PCV hose is pinched. NG --> See step 12 OK: Go to next step
7. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Visually check that the air cleaner filter element is not excessively contaminated with dirt or oil. OK The air cleaner filter element is not excessively contaminated with dirt or oil. NG --> See step 13 OK: Go to next step
8. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from the air induction system. NG --> See step 14 OK: Go to next step
9. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-385180-S06546023872011021400000) . NEXT --> See step 15
10. REPAIR OR REPLACE THROTTLE BODY Repair or replace the throttle body. Refer to «REMOVAL»(ref-385180-S20571009392011021400000) . NEXT --> See step 15
11. CHECK AND REPAIR VVT SYSTEM NEXT --> See step 15
12. REPAIR OR REPLACE PCV SYSTEM NEXT --> See step 15
13. REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY NEXT --> See step 15
14. REPAIR OR REPLACE AIR INDUCTION SYSTEM NEXT: Go to next step
15. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B) NOTE: For this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Switch the ECM from normal mode to check mode using the Techstream. Refer to «CHECK MODE PROCEDURE»(ref-385195-S37337289382011021400000) . Start the engine and idle it for one minute. Check that the idling is stable and fast. OK Stable fast idle Read the DTCs. OK No DTC is output. NEXT --> END
16. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)

P0550

P0552

P0553

Scheme 223

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P0604 is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P0606 is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

Scheme 224

1. CHECK ANY OTHER DTCS OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Read the DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . RESULT Result Proceed to P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A P0607 is output B B --> See step 3 A: Go to next step
2. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart. HINT: If P0136 or P0156 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If P0137 or P0157 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If P0138 or P0158 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If DTC P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT --> See step 6
3. CHECK FOR EXHAUST GAS LEAK Allow the engine to idle and rev the engine. Check for exhaust gas leaks around the heated oxygen sensor. If any exhaust gas leaks are present, repair it and proceed to "PERFORM CONFIRMATION DRIVING PATTERN". If no exhaust gas leaks are present proceed to "PERFORM CONFIRMATION DRIVING PATTERN". HINT: If no exhaust gas leaks are present, a malfunction in the heated oxygen sensor circuit is suspected. If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the output voltage of the heated oxygen sensor. NEXT: Go to next step
4. PERFORM ACTIVE TEST USING CONFIRMATION DRIVING PATTERN Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Connect the Techstream to the DLC3. Start the engine. Warm up the engine until the engine coolant temperature becomes 75°C (167°F) or more. Perform the drive pattern. Accelerate the vehicle to 80 km/h (50 mph) and stop the vehicle. Drive the vehicle between 60 and 80 km/h (35 and 50 mph) for 5 minutes. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A Only P0607 B No DTC output C C --> See step 6 B --> See step 7 A: Go to next step
5. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart. HINT: If P0136 or P0156 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If P0137 or P0157 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If P0138 or P0158 is output, troubleshoot for that DTC first. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Then proceed to "INSPECT ECM". If DTC P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT: Go to next step
6. INSPECT ECM Clear DTC. Refer to «DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157: Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158: Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)»(ref-385203-S10942431472011021400000) . Stop the engine and wait for 30 minutes. Connect the Techstream to the DLC3. Start the engine and allow it to idle for 2 minutes. Turn the Techstream on. Enter the following menu: Powertrain / Engine and ECT / Trouble Codes. Check the DTCs. RESULT Result Proceed to DTC is not output A P0607 is output B B --> See step 7 A --> END
7. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P060A is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P060B is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P060D is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P060E is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

Scheme 225

COMPONENT OPERATING RANGE

1. READ CURRENT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0630 is output A P0630 and other DTCs are output B If any DTCs other than P0630 are output, troubleshoot those DTCs first. NOTE: If P0630 is output, the VIN must be input to the ECM using the Techstream. However, all DTCs are cleared automatically by the Techstream when the VIN is input. If DTCs other than P0630 are output, check them first. B --> See step 3 A: Go to next step
2. INPUT VIN WITH TECHSTREAM Refer to the Registration. Refer to «REGISTRATION»(ref-385195-S08244560142011021400000) . NEXT --> END
3. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG) for 10 seconds. Turn the engine switch off. Turn the engine switch on (IG). Check DTC. OK P0657 is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

P1340 CAMSHAFT POSITION SENSOR RANGE CHECK

P1340 CAMSHAFT POSITION / CRANKSHAFT POSITION MISALIGNMENT

P1342, P1343 CAMSHAFT POSITION SENSOR RANGE CHECK

P1340 CAMSHAFT POSITION SENSOR RANGE CHECK

P1340 CAMSHAFT POSITION / CRANKSHAFT POSITION MISALIGNMENT

P1342 CAMSHAFT POSITION SENSOR RANGE CHECK

P1343 CAMSHAFT POSITION SENSOR RANGE CHECK

Scheme 226

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P1607 is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

CASE 1 AND 4

CASE 2

CASE 3

CASE 1

CASE 2

CASE 3

CASE 4

P2102

P2103

P2102

P2103

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 7° 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 engine switch is then turned off.

Scheme 227

ALL

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

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 7° 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 engine 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2111 or P2112 is output A P2111 or P2112 and other DTCs are output B HINT: If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first. B --> See step 4 A: Go to next step
2. INSPECT THROTTLE BODY ASSEMBLY (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 5 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . 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 DTC is output A P2111 or P2112 is output B B --> See step 6 A --> See step 7
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
5. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-385180-S20571009392011021400000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)

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 7° 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 engine switch is then turned off.

Scheme 228

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 7° 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 engine switch is then turned off.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2119 is output A P2119 and other DTCs are output B HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first. B --> See step 3 A: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Allow the engine to idle for 15 seconds. Fully depress and release the accelerator pedal several times quickly. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. OK No DTC is 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 4 OK --> See step 5
3. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
4. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-385180-S20571009392011021400000)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)

P2120

P2122

P2123

P2125

P2127

P2128

P2138

When any of DTCs P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 is 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 engine switch is turned off.

Scheme 229

The Accelerator Pedal Position (APP) 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 limp mode. In limp 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 engine 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2121 is output A P2121 and other DTCs are output B HINT: If any DTCs other than P2121 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
2. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the values displayed on the Techstream. Standard Voltage Accelerator Pedal Operations Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 4.7 V NG --> See step 3 OK --> See step 6
3. REPLACE ACCELERATOR PEDAL Replace the accelerator pedal assembly. Refer to «REMOVAL»(ref-385180-S06546962002011021400000) . NEXT: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2121) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Allow the engine to idle for 15 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2121 is output A No DTC is output B B --> SYSTEM OK A --> See step 7
5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

ALL

SENSOR VOLTAGE DETECTION MONITOR

SENSOR CURRENT DETECTION MONITOR

SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION P2195 AND P2197)

SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION P2196 AND P2198)

SENSOR CURRENT DETECTION MONITOR (HIGH SIDE MALFUNCTION P2195 AND P2197)

SENSOR CURRENT DETECTION MONITOR (RICH SIDE MALFUNCTION P2196 AND P2198)

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

Scheme 230

CONFIRMATION DRIVING PATTERN

HINT

1. This confirmation driving pattern is used in the "Perform Confirmation Driving Pattern" procedure of the following diagnostic troubleshooting procedure.
2. Performing this confirmation driving pattern will activate the Heated Oxygen (HO2) sensor monitor (the catalyst monitor is performed simultaneously). This is very useful for verifying the completion of a repair.

Note. This test will not be completed if the vehicle is driven under absolutely constant speed conditions such as with cruise control activated.

Scheme 231

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Warm-up the engine until the engine coolant temperature is 75°C (167°F) or higher [A].
4. Drive the vehicle at between 60 km/h and 120 km/h (40 mph and 75 mph) for at least 10 minutes [B].
5. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times [C].
6. Turn the Techstream on.
7. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
8. Input DTCs: P2195, P2196, P2197 and P2198.
9. Check the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern adding the vehicle speed and using the second gear to decelerate the vehicle.

ALL

A/F SENSOR - OPEN CIRCUIT BETWEEN AF+ AND AF

A/F SENSOR - LOW IMPEDANCE

OTHER

P2237 AND P2240

P2238 AND P2241

P2239 AND P2242

P2252 AND P2255

P2253 AND P2256

1. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) See step 12 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-385180-S08600195632011021400000) . NEXT: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Allow the engine to idle for 5 minutes or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. RESULT Result Proceed to No DTC is output A P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256 is output B B --> See step 4 A --> END
4. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

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

P2432, P2433, P2437 AND P2438

P2431 AND P2436

P2432 AND P2437

P2433 AND P2438

P2431 AND P2436

ALL

CASE 1

CASE 2

CASE 3

CONDITION 1

CONDITION 2

CONDITION 3

CONDITION 4

CONDITION 5

CONDITION 6

CONDITION 7

CONDITION 8

CASE 1

CASE 2

CASE 3

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

ALL

CASE 1

CASE 2

CASE 3

CONDITION 1

CONDITION 2

CONDITION 3

CONDITION 4

CONDITION 5

CONDITION 6

CONDITION 7

CONDITION 8

CRITERIA 1

CRITERIA 2

CRITERIA 3

CRITERIA 4

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

1. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000) . NEXT: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . 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 output, the repair has been successfully completed. NEXT --> END

HINT

1. This confirmation driving pattern is used in the "Perform Confirmation Driving Pattern" procedure of the following diagnostic troubleshooting procedure.
2. Performing this confirmation driving pattern will activate the Heated Oxygen (HO2) sensor monitor (the catalyst monitor is performed simultaneously). This is very useful for verifying the completion of a repair.

Note. This test will not be completed if the vehicle is driven under absolutely constant speed conditions such as with cruise control activated.

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Warm-up the engine until the engine coolant temperature is 75°C (167°F) or higher [A].
4. Drive the vehicle at between 60 km/h and 120 km/h (40 mph and 75 mph) for at least 10 minutes [B].
5. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times [C].
6. Turn the Techstream on.
7. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
8. Input DTCs: P2A00 and P2A03.
9. Check the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern adding the vehicle speed and using the second gear to decelerate the vehicle.

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

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2A00 AND/OR P2A03) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2A00 and/or P2A03 are output A P2A00 and/or P2A03 and other DTCs are output B HINT: If any DTCs relating to the A/F sensor (DTCs for the A/F sensor heater or A/F sensor admittance) 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-385203-S02879863162011021400000) NG --> See step 10 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - AIR-FUEL RATIO SENSOR) See step 12 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00 AND/OR P2A03) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. RESULT Result Proceed to P2A00 and/or P2A03 is output A No DTC is 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-385180-S08600195632011021400000) . NEXT: Go to next step
7. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00 AND/OR P2A03) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. RESULT Result Proceed to No DTC is output A P2A00 and/or P2A03 are output B B --> See step 12 A --> END
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
10. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-385180-S08600195632011021400000)
11. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
12. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

RELATED DTCS

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

Scheme 232

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, P2401, P2402 and P2419) are stored.

Scheme 233

Scheme 234

Note. In this vehicle EVAP system, 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 the 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 stored fuel vapors in the canister are purged into 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 the negative pressure (vacuum) is applied to the canister.

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

Scheme 235

Scheme 236

Scheme 237

Scheme 238

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 engine 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 engine 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 engine switch is turned off, the monitor check starts 2.5 hours later.
2. Purge flow monitor The purge flow monitor consists of 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 measured. If the variation in the pressure is below 0.5 kPa-g (3.75 mmHg-g), the ECM interprets this as the purge VSV being stuck closed, 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 conduction of the purge flow monitor, is measured by the ECM. 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 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 ratio (current-carrying time) (Open: ON; Closed: 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 closed 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 engine switch turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates see 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 closed. When ECM turns valve off, EVAP system vented. Negative pressure (vacuum) created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closed) and operating leak detection pump see scheme 1 (b) Canister pressure sensor Indicates pressure as voltages. ECM supplies regulated 5 V to canister pressure sensor, and uses feedback from sensor to monitor EVAP system pressure see scheme 2 (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 produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure indicates small leak of EVAP.

Scheme 239

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 2,438 m (8,000 ft.) 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 engine 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 engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor / Evaporative System. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor is 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 ECT is between 4.4 and 35°C (40 and 95°F) The IAT is between 4.4 and 35°C (40 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 higher than 75°C (167°F). Increase the engine speed to 3,000 rpm once. Allow the engine to idle and turn A/C on for 1 minute. Monitor Status Turn the engine switch off (if on (IG) or the engine is running). Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor is 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 .