Up to 08/2009

2GR-FXE ENGINE CONTROL: SFI SYSTEM: P0107,P0108: Manifold Absolute Pressure / Barometric Pressure Circuit Low Input
P0108 - Manifold Absolute Pressure / Barometric Pressure Circuit High Input

DESCRIPTION

By a built-in sensor unit, the manifold absolute pressure sensor detects the intake manifold pressure as a voltage.









HINT
- DTC P0107 and P0108 are detected when the power switch is on (IG) for approximately 2 seconds.
- When DTC P0107 or P0108 is detected, check the manifold absolute pressure by entering the following menus on the Techstream: Powertrain / Engine and ECT / Data List / MAP.






MONITOR DESCRIPTION

The ECM monitors the sensor voltage and use this value to calculate the manifold absolute pressure. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the manifold absolute pressure sensor and sets a DTC.

Example:

When the sensor output voltage remains less than 0.5 V, or more than 4.5 V for 0.5 seconds, the ECM sets a DTC.

If the malfunction is not repaired successfully, a DTC is set 0.5 seconds after the engine is next started.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

P0107





P0108





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN





- Connect the Techstream to the DLC3.

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

- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) DTC Check / Clear.

- Turn the power switch off.

- Turn the power switch on (IG) and turn the Techstream on [A].

- Wait 5 seconds.

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

- Input the DTC: P0107 or P0108.

- Check the DTC judgment result [B].





HINT
If the judgment result shows ABNORMAL, the system has a malfunction.

- If the test result is UNKNOWN, enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

- Read Pending DTCs.

HINT
If a pending DTC is output, the system is malfunctioning.

- If the test result is INCOMPLETE or UNKNOWN and 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.
WIRING DIAGRAM





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 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. READ VALUE USING TECHSTREAM (MAP)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

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

(e) Read the MAP value.

OK:

Same value as the actual atmospheric pressure.

HINT
- Standard atmospheric pressure is 101 kPa. For every 100 m increase in altitude, pressure drops by 1 kPa. Varies by weather (high atmospheric pressure, low atmospheric pressure).
- Also, check "Atmosphere Pressure" in the Data List.
NG -- CHECK TERMINAL VOLTAGE (MANIFOLD ABSOLUTE PRESSURE SENSOR)

OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

2. CHECK TERMINAL VOLTAGE (MANIFOLD ABSOLUTE PRESSURE SENSOR)





(a) Disconnect the manifold absolute pressure sensor connector.

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

(c) Measure the voltage between the terminals of the manifold absolute pressure sensor connector.

Standard Voltage:





Text in Illustration





(d) Reconnect the manifold absolute pressure sensor connector.

NG -- CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)
OK -- Continue to next step.

3. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

(a) Replace the manifold absolute pressure sensor Removal.

NEXT -- Continue to next step.

4. CHECK WHETHER DTC OUTPUT RECURS (P0107 OR P0108)

(a) Connect the Techstream to the DLC3.

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

(c) Clear the DTC DTC Check / Clear.

(d) Turn the power switch off.

(e) Turn the power switch on (IG) and wait for 2 seconds.

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

(g) Read the DTCs.

Result:





B -- REPLACE ECM Removal

A -- END

5. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

(a) Disconnect the manifold absolute pressure sensor connector.





(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(d) Reconnect the manifold absolute pressure sensor connector.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

OK -- REPLACE ECM Removal