DTC P0108 [L3]

BME010200100227

DTC P0108

MAP sensor circuit high input

DETECTION CONDITION

• The PCM monitors input voltage from the MAP sensor when the intake air temperature is above 10 °C {50 °F}. If input voltage at PCM terminal 1J is above 4.9 V, the PCM determines that the MAP sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.

POSSIBLE CAUSE

• MAP sensor malfunction
• Connector or terminal malfunction
• Open circuit in wiring between MAP sensor terminal A and PCM terminal 2H
• Open circuit in wiring between MAP sensor terminal D and PCM terminal 1J
• MAP sensor signal circuit shorts to constant voltage supply circuit
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
• Is the same DTC present?
Yes
Go to the next step.
No
Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure.
2
INSPECT CONNECTION OF MAP SENSOR CONNECTOR
• Turn the ignition switch off.
• Verify that the MAP sensor connector is connected securely.
• Is connection normal?
Yes
Go to the next step.
No
Reconnect the connector, then go to Step 8.
3
INSPECT POOR CONNECTION OF MAP SENSOR CONNECTOR
• Disconnect the MAP sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
4
VERIFY MAP SENSOR GROUND CIRCUIT FOR OPEN
• Inspect for continuity between MAP sensor terminal A (wiring harness-side) and body ground.
• Is there continuity?
Yes
Go to the next step.
No
Inspect for open circuit between PCM terminal 2H (wiring harness-side) and MAP sensor terminal A (wiring harness-side).
Repair or replace the wiring harness, then go to Step 8.
5
INSPECT PCM CONNECTOR
• Disconnect the PCM connector.
• Inspect for poor connection at terminal 1J and 2H (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
Yes
Repair the terminal, then go to Step 8.
No
Go to the next step.
6
VERIFY MAP SENSOR SIGNAL CIRCUIT FOR SHORT TO CONSTANT VOLTAGE CIRCUIT
• Inspect for continuity between MAP sensor terminal D and C (wiring harness-side).
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 8.
No
Go to the next step.
7
VERIFY MAP SENSOR SIGNAL CIRCUIT FOR OPEN
• Inspect for continuity between MAP sensor terminal D (wiring harness-side) and PCM terminal 1J (wiring harness-side).
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to the next step.
8
VERIFY TROUBLESHOOTING OF DTC P0108 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position to ON (Engine off).
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform KOEO/KOER self-test.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.