STEP 1. Using scan tool (M.U.T.-IIISE), check data list item 8: Manifold Absolute Pressure Sensor.
caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE). |
(1) Connect scan tool (M.U.T.-IIISE). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE) . (2) Turn the ignition switch to the "ON" position.
(3) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 8, Manifold Absolute Pressure Sensor.- When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).
- When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).
- When altitude is 1,200 m (3,937 feet), 88 kPa (26.0 in.Hg).
- When altitude is 1,800 m (5,906 feet), 81 kPa (23.9 in.Hg).
(4) Start the engine.- When the engine is idling, 27 - 47 kPa (8.0 - 13.9 in.Hg).
- When the engine is suddenly revved, manifold absolute pressure varies.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 2.
STEP 2. Measure the sensor supply voltage at manifold absolute pressure sensor connector.
(1) Disconnect the connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal MAP5 line and ground.- Voltage should be between 4.9 and 5.1 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.9 and 5.1 volts?
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 ECM connector.
STEP 4. Using scan tool (M.U.T.-IIISE), check data list item 8: Manifold Absolute Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 8, Manifold Absolute Pressure Sensor.- When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).
- When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).
- When altitude is 1,200 m (3,937 feet), 88 kPa (26.0 in.Hg).
- When altitude is 1,800 m (5,906 feet), 81 kPa (23.9 in.Hg).
(3) Start the engine.- When the engine is idling, 27 - 47 kPa (8.0 - 13.9 in.Hg).
- When the engine is suddenly revved, manifold absolute pressure varies.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Replace the ECM (Refer to Removal and Installation ). Then go to Step 9.
STEP 5. Check of harness damage in MAP line between manifold absolute pressure sensor connector and ECM connector.
STEP 6. Measure the sensor output voltage at manifold absolute pressure sensor connector.
(1) Using test harness special tool MB991709 to connect connector, and measure at pick-up harness.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal MAP and ground.- When altitude is 0 m (0 foot), voltage should be between 1.4 and 1.6 volts.
- When altitude is 600 m (1,969 feet), voltage should be between 1.3 and 1.5 volts.
- When altitude is 1,200 m (3,937 feet), voltage should be between 1.2 and 1.4 volts.
- When altitude is 1,800 m (5,906 feet), voltage should be between 1.1 and 1.3 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage normal?
Go to Step 8. Go to Step 7.
STEP 7. Check of short to ground in MAP line between manifold absolute pressure sensor connector and ECM connector.
STEP 8. Check of open circuit and harness damage in MAP line between manifold absolute pressure sensor connector and ECM connector.
STEP 9. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0107 set?
Retry the troubleshooting. The inspection is complete.