P0106

2AZ-FXE ENGINE CONTROL: SFI SYSTEM: P0106: Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem
P0106 - Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem

DESCRIPTION

The manifold absolute pressure sensor detects pressure inside the intake manifold as an absolute pressure with a built-in sensor and outputs a voltage. Based on the voltage from the manifold absolute pressure sensor, the hybrid vehicle control ECU controls the purge VSV and detects errors in the pressure sensor using the changes in pressure.









MONITOR DESCRIPTION

The manifold absolute pressure sensor detects the intake manifold pressure as a voltage using a built-in sensor. The ECM (included in hybrid vehicle control ECU) calculates intake manifold pressure based on this voltage and also calculates the purge VSV opening amount according to changes in the intake manifold pressure. When the intake manifold pressure measured after engine start drops by less than 3 kPa (22.5 mmHg) compared to the intake manifold pressure (atmospheric pressure) measured before engine start, the ECM (included in hybrid vehicle control ECU) interprets this as a malfunction in the manifold absolute pressure sensor and stores the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the power switch on (IG) and turn the Techstream on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.

4. Turn the power switch off and wait for 30 seconds.

5. Turn the power switch on (IG) and turn the Techstream on.

6. Put the engine in inspection mode (maintenance mode) Component Tests and General Diagnostics.

7. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or higher).

8. Move the shift lever to N.

9. Idle the engine for 10 seconds or more [A].

10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].

11. 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.

12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

13. Input the DTC: P0106.

14. Check the DTC judgment result.





HINT
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform steps [A] and [B] again.

15. If no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

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 hybrid vehicle control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO P0106)

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(d) Read the DTCs.

Result





HINT
If any DTCs other than P0106 are output, troubleshoot those DTCs first.

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

2. READ VALUE USING TECHSTREAM (MAP)

(a) Connect the Techstream to the DLC3.

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

(c) Put the engine in inspection mode (maintenance mode) Component Tests and General Diagnostics.

(d) Start the engine and warm it up.

(e) Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.

(f) Read the MAP value at engine idling.

Standard:





NG -- CHECK INTAKE SYSTEM

OK -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems

3. CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks Intake System.

OK:

No leaks in the intake system.

NG -- REPAIR OR REPLACE INTAKE SYSTEM

OK -- REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Removal