Engine Controls - Tests W/codes - Obd-Ii: Other Lexus ES XV10 рестайлинг

TWO-TRIP DETECTION LOGIC

When a malfunction initially occurs, trouble code will be temporarily stored in ECM memory, but MIL on instrument panel will not illuminate. The second time malfunction is detected, MIL on instrument panel will illuminate, provided ignition is turned off and then back on after first malfunction was detected. This is referred to as the 2-Trip Detection Logic and only applies to specified trouble codes. See TROUBLE CODE IDENTIFICATION table.

Note. When road testing vehicle in Check Mode, the Two Trip Detection Logic will not function. Also, MIL will illuminate the first time a malfunction is detected.

DATA LINK CONNECTOR

OBD-II regulations (SAE J-1850) standardizes DLC configurations. On all models, DLC No. 3 connector is located in fuse box at lower left of instrument panel. Terminal arrangement of connector complies with SAE J-1962 regulations.

FREEZE-FRAME DATA

The ECM records engine operating condition when a misfire, fuel trim (mixture) malfunction or other malfunction (fuel system, calculated load, coolant temperature, fuel trim (mixture), engine speed, vehicle speed, etc.) exists. If more than one fault is detected, only data from the 1st malfunction is recorded. Recorded data is useful for determining conditions in which the malfunction occurs.

Normal Mode Code Retrieval

1. Connect scan tester to Data Link Connector (DLC) No. 3. (Scheme 28) DLC No. 3 is located in fuse box at lower left of instrument panel. Turn ignition on with engine off. Turn scan tester on. Using scan tester manufacturer's instructions, check for trouble codes and freeze frame data.
2. If scan tester displays UNABLE TO CONNECT TO VEHICLE, DLC No. 3 must be checked. See «DLC NO»(ref-21746-S36618566442001010300000). 3 INSPECTION under SCAN TESTER PROBLEMS. If scan tester does not display UNABLE TO CONNECT TO VEHICLE, go to next step.
3. Record any trouble codes and freeze frame data displayed for system diagnosis. If driveability problem exists and no codes are present, go to «TESTS W/O CODES»(ref-21769) article for diagnosis by symptom.
4. If any trouble codes are present, perform appropriate diagnostic test. See «TROUBLE CODE IDENTIFICATION»(ref-21746-S12646317962001010300000) table. For more information on freeze frame data, see FREEZE FRAME DATA under INTRODUCTION. For information on 2-trip detection logic codes, see «TWO-TRIP DETECTION LOGIC»(ref-21746-S38958677412001010300000) under INTRODUCTION.
5. After repairs for trouble code have been completed, trouble code must be cleared from ECM memory. See «CLEARING TROUBLE CODES»(ref-21746-S38384399982001010300000).

Scheme 28

Check Mode Code Retrieval (Lexus Scan Tester Only)

1. Ensure vehicle battery is fully charged. Apply parking brake. Shift transmission/transaxle into Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Ensure throttle is in idle position.
2. Turn ignition off. Connect scan tester to Data Link Connector (DLC) No. 3. (Scheme 28) DLC No. 3 connector is located in fuse box at lower left of instrument panel. Turn ignition on with engine off. Turn scan tester on.
3. Switch scan tester from Normal Mode to Check Mode. Check Mode is operational if MIL on instrument panel flashes. Start engine. Ensure MIL goes off. Try to simulate conditions of driveability complaint described by customer. NOTE: If ignition is turned from ON to ACC or OFF position, all trouble codes and freeze frame data will be erased. DO NOT switch modes until all trouble codes and freeze frame data are recorded.
4. Record any trouble codes and freeze frame data displayed for system diagnosis. If driveability problem exists and no codes are present, go to «TESTS W/O CODES»(ref-21769) article for diagnosis by symptom.
5. If any trouble codes are present, perform appropriate diagnostic test. See «TROUBLE CODE IDENTIFICATION»(ref-21746-S12646317962001010300000) table. For more information on freeze frame data, see FREEZE FRAME DATA under INTRODUCTION. For information on 2-trip detection logic codes, see «TWO-TRIP DETECTION LOGIC»(ref-21746-S38958677412001010300000) under INTRODUCTION.
6. After repairs for trouble code have been completed, trouble code must be cleared from ECM memory. See «CLEARING TROUBLE CODES»(ref-21746-S38384399982001010300000).

CODE P0100: MASS AIRFLOW (MAF) SENSOR CIRCUIT

Condition

Following conditions continue with engine speed of 900 RPM or less

1. Closed throttle position switch in ON position.
2. MAF sensor output is 2.2 volts or less.

CODE P0110: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT

CODE P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT

Code is set when sensor temperature is 86°F (30°C) or less for at least 20 minutes of engine operation. Possible causes are

1. ECT sensor malfunction.
2. Faulty cooling system.

CODE P0120: THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION

Code is set when ECM consistently detects more than 2 volts from VTA circuit and closed throttle position switch is on. Possible cause is

1. TP sensor malfunction.

CODE P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL

CODE P0130: HEATED OXYGEN SENSOR FAULT (BANK NO. 1, SENSOR NO. 1), CODE P0150: HEATED OXYGEN SENSOR FAULT (BANK NO. 2, SENSOR NO. 1)

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block.

CODE P0133: HEATED OXYGEN SENSOR (BANK NO. 1, SENSOR NO. 1) CIRCUIT SLOW RESPONSE, CODE P0153: HEATED OXYGEN SENSOR (BANK NO. 2, SENSOR NO. 1) CIRCUIT SLOW RESPONSE

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block.

Code is set when ECM detects a response time of 1 second or more from sensor to change from rich to lean, or lean to rich. Possible cause is

1. Heated oxygen sensor.

CODE P0135: HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 1), CODE P0141: HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 2), CODE P0155: HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 2, SENSOR NO. 1)

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block. Sensor No. 2 refers to sensor furthest away from engine block.

Code is set when either of the following conditions is present

1. Sensor heater current draw exceeds 2 amps, or voltage drop of circuit exceeds 5 volts.
2. Sensor heater current draw is .25 amps or less.

Possible causes are

1. Heated oxygen sensor open or short circuit.
2. Heated oxygen sensor heater.
3. ECM malfunction.

CODE P0136: HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 2)

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Sensor No. 2 refers to sensor furthest away from engine block.

Code is set when bank No. 1, sensor No. 2 voltage remains at .4 volt or more or .5 volt or less during vehicle operation (31 MPH or more), once engine is at normal operating temperature. Possible cause is

1. Heated oxygen sensor malfunction.

CODE P0170: FUEL TRIM MALFUNCTION

CODES P0301-P0306: CYLINDER NO. 1-6 MISFIRE DETECTED

Note. When 2 or more codes for a misfiring cylinder are recorded repeatedly, but Code P0300 is not recorded, it indicates that misfires were detected and stored into ECM memory at different times.

Two conditions can cause code to set. These are

1. During any particular 200 revolutions of engine, misfiring is detected which can cause catalytic converter overheating and/or damage.
2. During any particular 1000 revolutions of engine, misfiring is detected which can cause a deterioration in emission levels.

For possible causes, see CODE P0300 , RANDOM MISFIRE DETECTED.

CODES P0325 & P0330: KNOCK SENSORS NO. 1 & 2 CIRCUIT

CODE P0335 OR P1335: CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT

CODE P0340: CAMSHAFT POSITION (CMP) SENSOR CIRCUIT

CODE P0401: INSUFFICIENT EXHAUST GAS RECIRCULATION (EGR) FLOW DETECTED

CODE P0402: EXCESSIVE EGR FLOW DETECTED

CODE P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD

CODE P0441: INCORRECT EVAP PURGE FLOW (CALIF. EMISSION EQUIPPED MODELS ONLY)

CODE P0500: VEHICLE SPEED SENSOR (VSS) MALFUNCTION

CODE P0505: IDLE CONTROL SYSTEM MALFUNCTION

CODE P0510: CLOSED THROTTLE POSITION (CTP) SWITCH MALFUNCTION

CODE P1300: IGNITOR CIRCUIT MALFUNCTION

CODE P1500: STARTER SIGNAL CIRCUIT MALFUNCTION

CODE P1600: ECM BATT MALFUNCTION

CODES P1605: KNOCK CONTROL ECM MALFUNCTION

CODES P1780: PARK/NEUTRAL POSITION SWITCH MALFUNCTION

1. Short in park/neutral position switch circuit.
2. Park/neutral switch malfunction.
3. ECM malfunction.

SUMMARY

If no trouble codes are present, driveability symptoms exist or intermittents exist, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent procedures.

Scheme 29