Inspection Procedure
- CHECK FOR EXHAUST GAS LEAK
- Allow the engine to idle.
- Check for exhaust gas leak around the heated oxygen sensor.
OK:
No leak from the heated oxygen sensor.
NG: REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT
OK : Go to Next Step
- CHECK HEATED OXYGEN SENSOR
- Connect the intelligent tester to the DLC3.
- Start the engine and turn the tester on.
- Warm up the engine at an engine speed of 2,500rpm for approximately 90 seconds.
- Enter the following menus: DIAGNOSIS / ENHANCED II / ACTIVE TEST / A/F CONTROL.
- Perform the A/F CONTROL operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume).
- Monitor the voltage outputs of the HO2 sensors (O2S B1S2) displayed on the tester.
HINT:
- The A/F CONTROL operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
- Each sensor reacts in accordance with increases in the fuel injection volume.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard voltage
STANDARD VOLTAGE SPECIFICATIONSTester Display (Sensor) Injection Volume Voltage O2S B1S2 -12.5% Less than 0.2 V +25% More than 0.8 V
NG: REPLACE HEATED OXYGEN SENSOR
OK : Go to Next Step
- CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0606)
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester on.
- Clear the DTC.
- Turn the ignition switch off.
- Disconnect the battery negative terminal and wait for 1 minute.
- Connect the battery negative terminal.
- Start the engine.
- Perform the drive pattern.
- Warm up the engine.
- Accelerate the vehicle to 50 mph (80 km/h) and stop the vehicle.
- Drive the vehicle at 35 to 50 mph (60 to 80 km/h) for 5 minutes or more.
- Enter the following menus: DIAGNOSIS / ENHANCED II / DTC INFO / CURRENT CODES.
- Read the DTCs.
Result
DTC RESULT DESCRIPTIONDisplay (DTC output) Proceed to P0606 A No output DTC B
B: CHECK FOR INTERMITTENT PROBLEMS
A: REPLACE ECM (See REMOVAL )