DTC P0107 [MZR-CD (RF Turbo)]

BME010200100W24

DTC P0107

Boost sensor circuit low input

DETECTION CONDITION

• PCM monitors input voltage from boost sensor while engine is running. If input voltage from boost sensor is below 1.9 V when engine speed is 2,400 rpm or above and accelerator opening angle is 50% or above, PCM determines boost sensor circuit low input.

POSSIBLE CAUSE

• Boost sensor malfunction
• Connector or terminal malfunction
• Short to GND in wiring between boost sensor terminal C and PCM terminal 90
• Open circuit in wiring between boost sensor terminal C and PCM terminal 90
• Short to GND in wiring between boost sensor terminal B and PCM terminal 36
• Boost sensor signal and GND circuits short each other
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC CONFIRMATION PROCEDURE
• Perform "DTC Confirmation Procedure".
• Is same DTC present during KOEO or KOER self-test?
Yes
Go to next step.
No
Intermittent concern exists. Go to "Intermittent Concern Troubleshooting".
2
INSPECT POOR CONNECTION OF BOOST SENSOR CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace suspected terminal, go to Step 9.
No
Go to next step.
3
INSPECT BOOST SENSOR SIGNAL CIRCUIT FOR SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between boost sensor terminal C and body GND.
• Is there continuity?
Yes
Repair or replace harness for short to GND, go to Step 9.
No
Go to next step.
4
INSPECT BOOST SENSOR POWER CIRCUIT FOR OPEN
• Turn engine switch to ON. (Engine OFF)
• Inspect voltage at boost sensor terminal C (harness side).
• Is voltage below 1.0 V?
Yes
Repair or replace harness for open, go to Step 9.
No
Go to next step.
5
INSPECT BOOST SENSOR SIGNAL CIRCUIT FOR SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between boost sensor terminal B and body GND.
• Is there continuity?
Yes
Repair or replace harness for short to GND, go to Step 9.
No
Go to next step.
6
INSPECT BOOST SENSOR CIRCUIT FOR SHORT WITH EACH OTHER
• Turn engine switch to OFF.
• Inspect continuity between boost sensor terminals B and A.
• Is there continuity?
Yes
Repair or replace harness for short with each other, go to Step 9.
No
Go to next step.
7
INSPECT BOOST SENSOR
• Inspect boost sensor.
• Is there any malfunction?
Yes
Replace boost sensor, go to Step 9.
No
Go to next step.
8
INSPECT POOR CONNECTION OF PCM CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace suspected terminal, go to next step.
No
Go to next step.
9
VERIFY TROUBLESHOOTING OF DTC P0107 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Perform KOEO/KOER self-test.
• Is same DTC present?
Yes
Replace PCM, go to next step.
No
Go to next step.
10
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.