LEMON Manuals: Even more car manuals for everyone
Home >> Suzuki >> 2007 >> Aerio Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0107: Manifold Absolute Pressure Circuit Low Input >> DTC Troubleshooting

DTC Troubleshooting

DIAGNOSIS PROCEDURE

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  Check MAP sensor and its circuit 
  1. Connect scan tool to DLC with ignition switch OFF.
  2. Turn ignition switch ON.
  3. Check intake manifold pressure displayed on scan tool.

Is it 146 kPa (43.1 in.Hg) or 0 kPa (0 in.Hg)? 		 Go to Step 3. 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 
  1. Disconnect connector from MAP sensor with ignition switch tuned OFF.
  2. Check for proper connection of MAP sensor connector at "GRY/RED", "ORN" and "LT GRN/RED" wire terminals.
  3. Turn ON ignition switch, measure voltage between engine ground and "GRY/RED" wire terminal of MAP sensor connector.
G04589429

 
Is voltage 4 - 5 V? 		 Go to Step 6. Go to Step 4.
4  Check MAP sensor power supply voltage 
  1. Disconnect connectors from ECM with ignition switch turned OFF.
  2. Remove ECM from vehicle body and then connect connectors to ECM.
  3. Turn ON ignition switch, measure voltage between vehicle body ground and "C46-23" terminal of ECM connector.

Is voltage 4 - 5 V? 		 Open wire in "GRY/RED" circuit. Go to Step 5.
5  Check MAP sensor power supply circuit 
  1. Disconnect connectors from TP sensor with ignition switch turned OFF.
  2. Turn ON ignition switch, measure voltage between vehicle body ground and "C46-23" terminal of ECM connector.

Is voltage 4 - 5 V? 		 Faulty TP sensor. "GRY/RED" wire shorted to ground or others circuit. If wires are OK, substitute a known-good ECM and recheck.
6  Check MAP sensor ground circuit 
  1. Measure resistance between "ORN" wire terminal of MAP sensor connector and engine ground.

Is resistance below 5 ohm? 		 Go to Step 8. Go to Step 7.
7  Check ground circuit 
  1. Disconnect connectors from ECM with ignition switch turn OFF.
  2. Remove ECM from vehicle body and connect connectors to ECM.
  3. Measure resistance between "C46-16" terminal of ECM connector and vehicle body ground.

Is resistance below 5 ohm? 		 Open or high resistance wire in "ORN" circuit. Open or high resistance wire in "C45-6" and/or "C46-6" circuit.
If wires are OK, substitute a known-good ECM and recheck.
8  Check MAP sensor signal circuit 
  1. Turn ON ignition switch.
  2. Measure voltage between "LT GRN/RED" wire terminal of MAP sensor connector and engine ground.

Is voltage 0 V? 		 Go to Step 9. "LT GRN/RED" wire shorted to other circuits.
9  Check MAP sensor signal circuit 
  1. Disconnect connectors from ECM with ignition switch turn OFF.
  2. Measure resistance between "C45-20" terminal of ECM connector and vehicle body ground.

Is resistance infinity? 		 Go to Step 10. "LT GRN/RED" wire shorted to ground circuit.
10  Check MAP sensor signal circuit 
  1. Measure resistance between "LT GRN/RED" wire terminal of MAP sensor connector and "C45-20" terminal of ECM connector.

Is resistance below 5 ohm? 		 Go to Step 11. Open or high resistance wire in "LT GRN/RED" circuit.
11  Check MAP sensor output signal 
  1. Check MAP sensor according to Manifold Absolute Pressure (MAP) Sensor Inspection  .

Is it in good condition? 		 Substitute a known-good ECM and recheck. Faulty MAP sensor.
scientia non olet · About LEMON Manuals