READ VALUE USING INTELLIGENT TESTER (MANIFOLD ABSOLUTE PRESSURE)
CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)
CHECK ECM TERMINAL VOLTAGE (VC TERMINAL)
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
CHECK WHETHER DTC OUTPUT RECURS (DTC P0105, P0107 OR P0108)
REPAIR OR REPLACE HARNESS OR CONNECTOR
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P0105 Manifold Absolute Pressure / Barometric Pressure Circuit |
DTC P0107 Manifold Absolute Pressure / Barometric Pressure Circuit Low Input |
DTC P0108 Manifold Absolute Pressure / Barometric Pressure Circuit High Input |
DESCRIPTION
The manifold absolute pressure sensor detects the intake manifold pressure. The ECM determines the basic injection volume and injection advance timing based on the voltage output by the manifold absolute pressure sensor.
The manifold absolute pressure sensor monitors the absolute pressure inside the intake manifold (default is 0 kPa [0 mmHg, 0 in.Hg]). As a result, the ECM controls the air-fuel ratio so that it reaches the proper level under any driving conditions.
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| 2 seconds after engine is started, race engine for 1 second | After the engine is started, condition (a) continues for more than 2.0 seconds (1 trip detection logic): (a) Manifold absolute pressure sensor voltage is 0.1 V or less, or 4.8 V or more. |
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| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| 2 seconds after engine is started, race engine for 1 second | After the engine is started, condition (a) continues for more than 0.5 seconds (1 trip detection logic): (a) Manifold absolute pressure sensor voltage is 0.1 V or less. |
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| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| 2 seconds after engine is started, race engine for 1 second | After the engine is started, condition (a) continues for more than 0.5 seconds (1 trip detection logic): (a) Manifold absolute pressure sensor voltage is 4.8 V or higher. |
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| DTC No. | Data List |
| P0105 |
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| P0107 | |
| P0108 |
- HINT:
- If DTC P0105, P0107 and/or P0108 is stored, the following symptoms may appear:
- Misfire
- Combustion noise
- Black smoke
- White smoke
- Lack of power
- When DTC P0105, P0107 and/or P0108 is stored, check the intake manifold pressure by entering the following menus: Powertrain / Engine and ECT / Data List / MAP.
Reference Intake Manifold Pressure Malfunction Approximately 0 kPa - Short in PIM circuit to ground
- Open in VC circuit
250 kPa (1875 mmHg, 73.8 in.Hg) or higher - Short in VC circuit to PIM circuit
- Open in PIM circuit
- Open in E2 circuit
- Short in PIM circuit to ground
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK043X.html) and initialization (HILUX_TGN26 RM000000TIN04FX.html).
- HINT:
- Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
| 1.READ VALUE USING INTELLIGENT TESTER (MANIFOLD ABSOLUTE PRESSURE) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.
Read the value.
- OK:
- Same as the actual atmospheric pressure.
- HINT:
- Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather (high atmospheric pressure, low atmospheric pressure).
- Also, check "Atmosphere Pressure" in the Data List.
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| 2.CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM) |
Disconnect the manifold absolute pressure sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C20-2 (PIM) - C23-28 (PIM) Always Below 1 Ω C20-3 (VC) - C22-18 (VC) Always Below 1 Ω C20-1 (E) - C22-28 (E2) Always Below 1 Ω C20-2 (PIM) or C23-28 (PIM) - Body ground Always 10 kΩ or higher C20-3 (VC) or C22-18 (VC) - Body ground Always 10 kΩ or higher
Reconnect the manifold absolute pressure sensor connector.
Reconnect the ECM connector.
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| OK | |
| 3.CHECK ECM TERMINAL VOLTAGE (VC TERMINAL) |
Disconnect the manifold absolute pressure sensor connector.
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Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition C20-3 (VC) - C20-1 (E) Ignition switch ON 4.75 to 5.25 V
Text in Illustration *a Front view of wire harness connector
(to Absolute Pressure Sensor)
Reconnect the manifold absolute pressure sensor connector.
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| OK | |
| 4.REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR |
Replace the manifold absolute pressure sensor (HILUX_TGN26 RM000004Q2F009X.html).
| NEXT | |
| 5.CHECK WHETHER DTC OUTPUT RECURS (DTC P0105, P0107 OR P0108) |
Connect the intelligent tester to the DLC3.
Clear the DTCs (HILUX_TGN26 RM000000PDK0TAX.html).
Turn the ignition switch off for 30 seconds or more.
Turn the tester off.
Start the engine.
After the engine is started for 2 seconds, race the engine for 1 second.
Turn the tester on.
Confirm that the DTC is not output again.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input DTC P0105, P0107 or P0108.
Check the DTC judgment result.
Result Result Proceed to ABNORMAL A NORMAL B - HINT:
- If STATUS is INCOMPLETE or N/A, race the engine for 1 minute, and then idle the engine for 5 minutes.
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| A | |
| 6.REPLACE ECM |
Replace the ECM (HILUX_TGN26 RM0000043H100GX.html).
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| 7.REPAIR OR REPLACE HARNESS OR CONNECTOR |
Repair or replace the harness or connector.
| NEXT | |
| 8.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the intelligent tester to the DLC3.
Clear the DTCs (HILUX_TGN26 RM000000PDK0TAX.html).
Turn the ignition switch off for 30 seconds or more.
Turn the tester off.
Turn the ignition switch to ON for 3 seconds and turn the tester on.
After the engine is started for 2 seconds, race the engine for 1 second.
Confirm that the DTC is not output again.
- HINT:
- Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input DTC P0105, P0107 or P0108.
Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, race the engine for 1 minute, and then idle the engine for 5 minutes.
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