DTC P0108:00

MAP sensor circuit high input

DETECTION CONDITION

• The PCM monitors the input voltage from the MAP sensor. If the input voltage at the PCM terminal 1BW is above 4.89 V for 5 s, the PCM determines that the MAP sensor circuit has a malfunction.

Diagnostic support note

• This is a continuous monitor (CCM).

• The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Estimates MAP using MAF sensor and engine speed.

• Restricts the upper limit of the engine speed.

• Inhibits the evaporative purge control.

POSSIBLE CAUSE

• MAP sensor/IAT sensor No.2 connector or terminals malfunction

• PCM connector or terminals malfunction

• MAP sensor malfunction

• Short to power supply in wiring harness between MAP sensor/IAT sensor No.2 terminal D and PCM terminal 1BW

• Open circuit in wiring harness between the following terminals:

• MAP sensor/IAT sensor No.2 terminal C—PCM terminal 1BO

• MAP sensor/IAT sensor No.2 terminal D—PCM terminal 1BW

• MAP sensor/IAT sensor No.2 terminal A—PCM terminal 1BX

• PCM malfunction

Item (definition)

Unit/Condition

Definition

Condition/Specification (Reference)

MAP

KPa , mBar , psi, in H20

Manifold absolute pressure input from MAP sensor

• Displays MAP

MAP_V

V

MAP sensor voltage

• Ignition switched ON (engine off) (MAP:101 kPa {1.03 kgf/cm², 14.6 psi}): Approx. 4.08 V (ECT is 89 °C {192 °F})

• Idle (after warm up) (MAP: 31 kPa {0.32 kgf/cm², 4.5 psi}): Approx. 1.25 V (ECT is 88 °C {190 °F})

• Racing (engine speed is 2,000 rpm) (MAP: 32 kPa {0.33 kgf/cm², 4.6 psi}): Approx. 1.31 V (ECT is 89 °C {192 °F})

• Racing (engine speed is 4,000 rpm) (MAP: 49 kPa {0.50 kgf/cm², 7.1 psi}): Approx. 2.03 V (ECT is 89 °C {192 °F})

STEP

INSPECTION

ACTION

1

NOTE:

• Recording can be facilitated using the screen capture function of the PC.

• Record the FREEZE FRAME DATA/snapshot data on the repair order.

—

Go to the next step.

2

• Verify related Service Bulletins and/or on-line 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

• Access the MAP_V PID using the M-MDS.

  (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

• Verify the MAP_V PID value.

• Is the MAP_V PID value 5 V or B+?

Yes

Go to Step 7.

No

Go to the next step.

4

• Switch the ignition off.

• Disconnect the MAP sensor/IAT sensor No.2 connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 10.

No

Go to the next step.

5

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 10.

No

Go to the next step.

6

• Reconnect all disconnected connectors.

• Inspect the MAP sensor.

  (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Replace the MAP sensor/IAT sensor No.2, then go to Step 10.

(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to Step 10.

7

• Switch the ignition off.

• Disconnect the MAP sensor/IAT sensor No.2 connector.

• Access the MAP_V PID using the M-MDS.

  (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

• Verify the MAP_V PID value.

• Is the MAP_V PID value 5 V or B+?

Yes

Go to the next step.

No

Go to Step 9.

8

• Verify that the MAP sensor/IAT sensor No.2 connector is disconnected.

• Switch the ignition off.

• Disconnect the PCM connector.

• Inspect for continuity between MAP sensor/IAT sensor No.2 terminal D (wiring harness-side) and PCM terminal 1BW (wiring harness-side).

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between MAP sensor/IAT sensor No.2 terminal D and PCM terminal 1BW.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to power supply.

Go to Step 10.

No

Refer to the wiring diagram and verify whether or not there is a common connector between MAP sensor/IAT sensor No.2 terminal D and PCM terminal 1BW.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 10.

9

• Verify that the MAP sensor/IAT sensor No.2 connector is disconnected.

• Switch the ignition off.

• Disconnect the PCM connector.

• Inspect for continuity between the following terminals (wiring harness-side):

• MAP sensor/IAT sensor No.2 terminal C—PCM terminal 1BO

• MAP sensor/IAT sensor No.2 terminal A—PCM terminal 1BX

• Is there continuity?

Yes

Replace the MAP sensor/IAT sensor No.2, then go to the next step.

(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• MAP sensor/IAT sensor No.2 terminal C—PCM terminal 1BO

• MAP sensor/IAT sensor No.2 terminal A—PCM terminal 1BX

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to the next step.

10

• Always reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

  (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].)

• Perform the KOEO or KOER self test.

  (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0)].)

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

  (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Go to the next step.

No

Go to the next step.

11

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.