DTC P0108 [LF]

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DTC P0108 [LF]

B3E010201084W09

DTC P0108 | MAP sensor circuit high input
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DETECTION CONDITION

• The PCM monitors the input voltage from the MAP sensor when the intake air temperature is above 10 °C {50 °F}. If input the voltage at PCM terminal 2AL is above 4.9V, the PCM determines that the MAP sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.
• PENDING CODE is available if the 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 harness between MAP sensor terminal A and PCM terminal 2AA
• Open circuit in wiring harness between MAP sensor terminal D and PCM terminal 2AL
• MAP sensor signal circuit shorts to constant voltage supply circuit
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | 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 9.
4 | 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 9.
No | Go to the next step.
5 | VERIFY MAP SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the MAP sensor terminal A (wiring harness-side) and body ground. • Is there continuity? | Yes | Go to the next step.
No | Inspect for open circuit in wiring harness between PCM terminal 2AA (wiring harness-side) and MAP sensor terminal A (wiring harness-side). Repair or replace suspected harness, then go to Step 9.
6 | INSPECT PCM CONNECTOR • Disconnect the PCM connector. • Inspect for poor connection at terminals (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair the terminal, then go to Step 9.
No | Go to the next step.
7 | 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 9.
No | Go to the next step.
8 | VERIFY MAP SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between MAP sensor terminal D (wiring harness-side) and PCM terminal 2AL (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.

9

VERIFY TROUBLESHOOTING OF DTC P0108 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the memory using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?

Yes

Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [LF].)

No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [LF].) • Are any DTC present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [LF].)
No | Troubleshooting completed.