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DTC Troubleshooting

DIAGNOSIS PROCEDURE - DTC P0108 MANIFOLD ABSOLUTE PRESSURE SENSOR HIGH INPUT

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD) System Check.
Is the system check complete?		 - Go to Step 2. Go to "ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK ".
2 Check for a crack, vacuum leak, or blockage in the vacuum line of the MAP sensor.
Is the problem found?		 - Go to Step 3. Go to Step 4.
3
  1. Repair or replace the vacuum line in the MAP sensor.
  2. Perform a road test.
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
4
  1. Install the scan tool to the Data Link Connector (DLC).
  2. Turn the ignition switch to ON.

Does the scan tool show the MAP sensor voltage below the specified value?		 4.1 V Go to Step 5. Go to Step 6.
5
  1. Disconnect the vacuum line from the MAP sensor.
  2. Apply 60 kPa (17.7 inHg) of vacuum to the MAP sensor.

Does the scan tool show the MAP sensor voltage between the specified value?		 1.1 ~ 1.5V Go to "DIAGNOSTIC AIDS " Go to Step 6.
6
  1. Turn the ignition switch to LOCK.
  2. Disconnect the MAP sensor connector.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between the MAP sensor connector terminal A and C.

Is the voltage between the specified value?		 4.5 ~ 5.5 V Go to Step 7. Go to Step 8.
7 Connect a fused jumper between the MAP sensor connector terminal B and C.
Does the scan tool show the MAP sensor voltage above the specified value?		 4.5 V Go to Step 15. Go to Step 13.
8 Measure the voltage between the MAP sensor connector terminal C and the ground.
Is the voltage between the specified value?		 4.5 ~ 5.5 V Go to Step 9. Go to Step 11.
9 Check for a short in the wire between the MAP sensor connector terminal A and the ECM connector terminal 65.
Is the problem found?		 - Go to Step 10. Go to Step 11.
10
  1. Repair the wire or the connector terminal between the MAP sensor connector terminal A and the ECM connector terminal 65.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
11 Check for a short in the wire between the MAP sensor connector terminal C and the ECM connector terminal 48.
Is the problem found?		 - Go to Step 12. Go to Step 13.
12
  1. Repair the wire or the connector terminal between the MAP sensor connector terminal C and the ECM connector terminal 48.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
13 Check for a short in the wire between the MAP sensor connector terminal B and the ECM connector terminal 12.
Is the problem found?		 - Go to Step 14. Go to Step 16.
14
  1. Repair the wire or the connector terminal between the MAP sensor connector terminal B and the ECM connector terminal 12.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
15
  1. Replace the MAP sensor.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
16
  1. Turn the ignition switch to LOCK.
  2. Replace the ECM.
  3. Perform an On- Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
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