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DTC P0108 [L3 Turbo]

id0102b7803500

DTC P0108 | MAP sensor circuit high input
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DETECTION CONDITION | • PCM monitors input voltage from the MAP sensor when the intake air temperature is above -10 °C {14 °F}. If the input voltage is above 4.9 V, the PCM determines that MAP sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is available. • DTCs are stored in the PCM memory.
POSSIBLE CAUSE | • MAP sensor malfunction • Connector or terminal malfunction • Open circuit in the wiring harness between MAP sensor terminal A and PCM terminal 2H • Open circuit in the wiring harness between MAP sensor terminal D and PCM terminal 1J • MAP sensor signal circuit short to the constant voltage supply circuit • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS 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 Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service 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 the connection normal? | Yes | Go to the next step.
No | Reconnect the connector, then go to Step 9.
4 | INSPECT MAP SENSOR CONNECTOR FOR POOR CONNECTION • 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 suspected 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 MAP sensor terminal A (harness-side) and body ground. • Is there continuity? | Yes | Go to the next step.
No | Inspect for an open circuit between PCM terminal 2H (harness-side) and MAP sensor terminal A (harness-side). Repair or replace the suspected wiring harness, then go to Step 9.
6 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged, pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair 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 (harness-side). • Is there continuity? | Yes | Repair or replace the suspected 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 (harness-side) and PCM terminal 1J (harness-side). • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the suspected wiring harness, then go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0108 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn ignition switch to the ON position (Engine off). • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine and warm it up completely. • Is same DTC present? | Yes | Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present? | Yes | Go to applicable inspection. (See DTC TABLE [L3 Turbo].)
No | Troubleshooting completed.