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P106B





3UR-FE ENGINE CONTROL: SFI SYSTEM: P106B: Evaporative Emission System Pressure Sensor - Secondary Air Injection Pressure Sensor Correlation
P106B - Evaporative Emission System Pressure Sensor - Secondary Air Injection Pressure Sensor Correlation

DESCRIPTION





HINT
*: Name of Data List item

MONITOR DESCRIPTION

This DTC is stored when a deviation from pressure sensor characteristics is detected.

The pressure detected by the canister pressure sensor and the pressures detected by the pressure sensors of both air switching valves (for Bank 1 or Bank 2) are checked 55 minutes after the engine switch is turned off. If the pressure detected by the canister pressure sensor and the pressure detected by the pressure sensor of either air switching valve differ by a certain amount, the MIL is illuminated and a DTC is stored (2 trip detection logic).

HINT
Correct judgment may not be possible when the altitude is 4000 m (13120 ft.) or more.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the engine switch on (IG) and turn the Techstream on [A].

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).

4. Start the engine and idle it for 10 seconds [B].

5. Turn the engine switch off.

6. Soak the vehicle for 55 minutes [C].

7. Turn the engine switch on (IG) and turn the Techstream on.

8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].

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: P106B.

12. Check the DTC judgment result.





HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [A] through [D] again.

13. If the no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
- If a permanent DTC is output, the system is malfunctioning
- If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

HINT
Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P106B)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / DTC.

(e) Read the DTCs.

Result





B -- GO TO DTC CHART SFI System
A -- Continue to next step.

2. READ VALUE USING TECHSTREAM (VAPOR PRESSURE PUMP, AIR PUMP PRESSURE (ABSOLUTE) AND AIR PUMP2 PRESSURE (ABSOLUTE))

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menu: Powertrain / Engine and ECT / Data List / Vapor Pressure Pump, Air Pump Pressure sensor (Absolute) and Air Pump2 Pressure sensor (Absolute).

(e) Compare the Vapor Pressure Pump, Air Pump Pressure sensor (Absolute) and Air Pump2 Pressure sensor (Absolute) data from the Data List with the current atmospheric pressure*.

HINT
- *: Standard atmospheric pressure is 101 kPa (760 mmHg) at sea level. The atmospheric pressure decreases by approximately 1 kPa (7.5 mmHg) for every 100 m of elevation increase. Atmospheric pressure is also affected by weather conditions. The Atmosphere pressure listed in the Data List cannot be used as a reference for this check.
- If you do not know the atmospheric pressure refer to the Vapor Pressure Pump value of other vehicles in the workshop and check the difference in pressure.

Result





B -- REPLACE AIR SWITCHING VALVE
A -- Continue to next step.

3. REPLACE CANISTER

(a) Replace the canister.

NEXT -- CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

4. REPLACE AIR SWITCHING VALVE

(a) Replace the air switching valve Removal.

NEXT -- Continue to next step.

5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG) and turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine and ECT / Data List / Vapor Pressure Pump, Air pump pressure (absolute) and Air Pump2 Pressure (Absolute).

(d) Confirm that the difference between Vapor Pressure Pump and Air pump pressure (Absolute), and the difference between Vapor Pressure Pump and Air Pump2 Pressure (Absolute) are 3.5 kPa (+/- 26.25 mmHg) or less.

NEXT -- END
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