[ 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. P0108 MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT HIGH INPUT
Code No. P0108: Manifold Absolute Pressure Sensor Circuit High 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.
Judgement Criterion
  • Manifold absolute pressure sensor output voltage is more than 4.6 V (corresponding to a manifold absolute pressure of 313 kPa or more) 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 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 resistance measurement at manifold absolute pressure sensor connector.
  • Disconnect connector, and measure at harness side.
  • Resistance between terminal engine-ECU MAPE line and body earth.
OK: Continuity (2 Ω or less)
Is the check result normal?
Go to Step 5.
Go to Step 3.
 
STEP 3. Check of open circuit, and damage in MAPE 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. 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 6.
 
STEP 6. Replace the manifold absolute pressure sensor
  • After replacing the manifold absolute pressure sensor, reconfirm whether the diagnosis code is set.
Is the diagnosis code set?
Replace the engine-ECU.
Check end.