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1
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RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
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Note
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• Recording can be facilitated using the screen capture function of the PC.
• Record the FREEZE FRAME DATA/snapshot data on the repair order.
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—
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Go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition off, then ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Are any other PENDING CODEs and/or DTCs present?
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Yes
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Go to the applicable PENDING CODE or DTC inspection.
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No
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Go to the next step.
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4
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INSPECT EXHAUST GAS PRESSURE SENSOR CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the exhaust gas pressure sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 10.
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No
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Go to the next step.
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5
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INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 10.
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No
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Go to the next step.
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6
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INSPECT EXHAUST GAS PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Verify that the exhaust gas pressure sensor and PCM connectors are disconnected.
• Switch the ignition ON (engine off).
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Note
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• Another DTC may be stored by the PCM detecting an open circuit.
• Measure the voltage at the exhaust gas pressure sensor terminal B (wiring harness-side).
• Is the voltage 0 V?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify whether or not there is a common connector between exhaust gas pressure sensor terminal B and PCM terminal 1BF.
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.
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7
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INSPECT EXHAUST GAS PRESSURE SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT TO EACH OTHER
• Verify that the exhaust gas pressure sensor and PCM connectors are disconnected.
• Switch the ignition off.
• Inspect for continuity between exhaust gas pressure sensor terminals A and B (wiring harness-side).
• Is there continuity?
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Yes
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Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Exhaust gas pressure sensor terminal A—PCM terminal 1BW
• Exhaust gas pressure sensor terminal B—PCM terminal 1BF
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 each other.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to each other.
Go to Step 10.
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No
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Go to the next step.
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8
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INSPECT EXHAUST GAS PRESSURE SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
• Verify that the exhaust gas pressure sensor and PCM connectors are disconnected.
• Inspect for continuity between exhaust gas pressure sensor terminal C (wiring harness-side) and PCM terminal 1BQ (wiring harness-side).
• Is there continuity?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify whether or not there is a common connector between exhaust gas pressure sensor terminal C and PCM terminal 1BQ.
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.
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9
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INSPECT EXHAUST GAS PRESSURE SENSOR
• Inspect the exhaust gas pressure sensor.
• Is there any malfunction?
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Yes
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Replace the exhaust gas pressure sensor, then go to the next step.
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No
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Go to the next step.
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10
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Always reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Perform the KOEO or KOER self test.
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
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No
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Go to the next step.
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11
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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