P0107
DTC P0107: Manifold Absolute Pressure (MAP) Sensor Low Input
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.
NOTE:
Check to make sure that the following condition is satisfied when using this DTC confirmation procedure.
- Intake air temp.: -10 °C, 14 °F or higher
- Altitude (barometric pressure): 2020 m, 6650 ft or less (540 mmHg, 72 kPa or more)
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC using scan tool and warm up engine completely.
3) Drive vehicle at 30 mph, 50 km/h or more for 10 min. or more.
4) Release accelerator pedal and with engine brake applied, keep vehicle coasting and stop vehicle.
5) Run engine at idle speed for 1 min.
6) Check DTC and pending DTC.
DTC Troubleshooting
1.
Was "Engine System Check" performed?
YES
Go to Step 2.
NO
Go to Engine System Check Engine System Check.
2. Check MAP sensor and its circuit.
Connect scan tool to DLC with ignition switch OFF.
Turn ignition switch ON.
Check intake manifold pressure.
Is it 146 kPa (43.1 in.Hg) or 0 kPa (0 in.Hg)?
YES
Go to Step 3.
NO
Intermittent trouble.
Check for intermittent referring to Intermittent and Poor Connection Inspection.
If OK, go to Step 9.
3. Check MAP sensor power supply voltage.
Disconnect connector from MAP sensor with ignition switch tuned OFF.
Check for proper connection of MAP sensor at "GRY/RED", "ORN" and "LT GRN/RED".
Turn ON ignition switch, measure voltage between engine ground and "GRY/RED" wire terminal.
Is voltage 4 - 5 V?
YES
Go to Step 6.
NO
Go to Step 4.
4. Check MAP sensor power supply voltage.
Disconnect connectors from ECM with ignition switch turned OFF.
Remove ECM from vehicle body and then connect connectors to ECM.
Turn ON ignition switch, measure voltage between vehicle body ground and "C46-18" terminal.
Is voltage 4 - 5 V?
YES
"GRY/RED" wire in open circuit.
NO
Go to Step 5.
5. Check MAP sensor power supply circuit.
Disconnect connectors from TP sensor and tank pressure sensor with ignition switch turned OFF.
Turn ON ignition switch, measure voltage between vehicle body ground and "C46-18" terminal.
Is voltage 4 - 5 V?
YES
Faulty TP sensor or tank pressure sensor.
NO
"GRY/RED" wire shorted to ground or others circuit.
If wires are OK, substitute a known-good ECM and recheck.
6. Check MAF sensor ground circuit.
Measure resistance between "ORN" wire terminal in MAP sensor harness connector and engine ground.
Is resistance below 5 ohms?
YES
Go to Step 8.
NO
Go to Step 7.
7. Check ground circuit.
Disconnect connectors from ECM with ignition switch turn OFF.
Remove ECM from vehicle body and connect connectors to ECM.
Measure resistance between "C46-27" terminal and vehicle body ground.
Is resistance below 5 ohms?
YES
"ORN" wire in open or high resistance circuit.
NO
ECM grounds "C46-27" and/or "C46-9" circuit in open or high resistance.
If wires are OK, substitute a known-good ECM and recheck.
8. Check MAP sensor signal circuit.
Turn ON ignition switch.
Measure voltage between "LT GRN/RED" wire terminal in MAP sensor harness connector and engine ground.
Is voltage 0 V?
YES
Go to Step 9.
NO
"LT GRY/RED" wire shorted to others circuit.
9. Check MAP sensor signal circuit.
Disconnect connectors from ECM with ignition switch turn OFF.
Measure resistance between "C45-7" terminal and vehicle body ground.
Is resistance infinity?
YES
Go to Step 10.
NO
"LT GRN/RED" wire shorted to ground circuit.
10. Check MAP sensor signal circuit.
Measure resistance between "LT GRN/RED" wire terminal in MAP sensor harness connector and "C45-7" terminal in ECM connector.
Is resistance below 5 ohms?
YES
Go to Step 11.
NO
"LT GRN/RED" wire in open or high resistance circuit.
11. Check MAP sensor output signal.
Check MAP sensor according to Testing and Inspection Manifold Absolute Pressure (MAP) Sensor Inspection.
Is it in good condition?
YES
Substitute a known-good ECM and recheck.
NO
Faulty MAP sensor.