[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
13 -FUEL > 13A-DIRECT INJECTION AND MULTIPOINT FUEL INJECTION (DI AND MPI) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > CODE NO. P0107 MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT LOW INPUT
Code No. P0107: Manifold Absolute Pressure Sensor Circuit Low Input
 
 
 
 
OPERATION
  • A power voltage of 5 V is applied to the manifold absolute pressure sensor power terminal from the engine-ECU connector terminal MAP5 and earthed to the engine-ECU connector terminal MAPE from the manifold absolute pressure sensor earth terminal.
  • The sensor signal is inputted to the engine-ECU connector terminal MAP from the manifold absolute pressure sensor output terminal.
 
 
FUNCTION
  • The manifold absolute pressure sensor detects a change in inlet manifold pressure and inputs the signal to the engine-ECU.
  • In response to the signal, the engine-ECU corrects the fuel injection amount, etc.
 
 
TROUBLE JUDGEMENT
Check Conditions
  • Engine is running.
  • Engine coolant temperature is more than 0°C at the engine starts. Or, more than 8 minutes have passed since the engine starting sequence was completed, when the engine coolant temperature at engine start is less than 0°C.
  • Volumetric efficiency is more than 20 %.
Judgement Criterion
  • Manifold absolute pressure sensor output voltage is less than 0.1 V (corresponding to a manifold absolute pressure of 7 kPa or less) for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
  • None.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Estimate the throttle opening degree and the inlet manifold pressure given by a normal sensor, and then carry out the fuel control.
  • Supercharging pressure is restricted.
 
 
PROBABLE CAUSES
  • Failed manifold absolute pressure sensor
  • Open/short circuit or harness damage in manifold absolute pressure sensor circuit or loose connector contact
  • Failed engine-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE data list
  • Data list reference table (Refer to ).
    1. Item 8: Manifold absolute pressure sensor
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.
 
STEP 2. Perform voltage measurement at manifold absolute pressure sensor connector.
  • Disconnect connector, and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal engine-ECU MAP5 line and body earth.
OK: 4.9 - 5.1 V
Is the check result normal?
Go to Step 5.
Go to Step 3.
 
STEP 3. Check of open circuit, and short circuit in MAP5 line between manifold absolute pressure sensor connector and engine-ECU connector.
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. M.U.T.-IIISE data list
  • Data list reference table (Refer to ).
    1. Item 8: Manifold absolute pressure sensor
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the engine-ECU.
 
STEP 5. Check of damage in MAP5 line between manifold absolute pressure sensor connector and engine-ECU connector.
Is the check result normal?
Go to Step 6.
Repair the connector(s) or wiring harness.
 
STEP 6. Perform voltage measurement at manifold absolute pressure sensor connector.
  • Use special tool test harness (MB991709) to connect connector, and measure at pick-up harness.
  • Ignition switch: ON
  • Voltage between terminal engine-ECU MAP line and body earth.
  • Altitude 0 m: 3.8 - 4.2 V
  • Altitude 600 m: 3.5 - 3.9 V
  • Altitude 1,200 m: 3.3 - 3.7 V
  • Altitude 1,800 m: 3.0 - 3.4 V
Is the check result normal?
Go to Step 8.
Go to Step 7.
 
STEP 7. Check of short to earth in MAP line between manifold absolute pressure sensor connector and engine-ECU connector.
Is the check result normal?
Replace the manifold absolute pressure sensor.
Repair the connector(s) or wiring harness.
 
STEP 8. Check of open circuit, and damage in MAP line between manifold absolute pressure sensor connector and engine-ECU connector.
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.