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1
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VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then 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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INSPECT MAF SENSOR/IAT SENSOR NO.1 CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the MAF sensor/IAT sensor No.1 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 8.
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No
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Go to the next step.
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4
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INSPECT IAT SENSOR NO.1
• Inspect the IAT sensor No.1.
• Is there any malfunction?
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Yes
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Replace the MAF sensor/IAT sensor No.1, then go to Step 8.
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No
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Go to the next step.
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5
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INSPECT IAT SENSOR NO.1 SIGNAL CIRCUIT FOR SHORT TO GROUND
• Verify that the MAF sensor/IAT sensor No.1 connector is disconnected.
• Inspect for continuity between MAF sensor/IAT sensor No.1 terminal A (wiring harness-side) and body ground.
• Is there continuity?
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Yes
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If the short to ground circuit could be detected in the wiring harness:
• Refer to the wiring diagram and verify whether or not there is a common connector between MAF sensor/IAT sensor No.1 terminal A and PCM terminal 2U.
If there is a common connector:
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― 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 ground.
― Repair or replace the malfunctioning part.
If there is no common connector:
-
― Repair or replace the wiring harness which has a short to ground.
If the short to ground circuit could not be detected in the wiring harness:
• Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 8.
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No
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Go to the next step.
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6
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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 8.
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No
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Go to the next step.
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7
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INSPECT IAT SENSOR NO.1 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
• Verify that the MAF sensor/IAT sensor No.1 and PCM connectors are disconnected.
• Inspect for continuity between MAF sensor/IAT sensor No.1 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:
• MAF sensor/IAT sensor No.1 terminal A—PCM terminal 2U
• MAF sensor/IAT sensor No.1 terminal B—PCM terminal 2AY
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 the next step.
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No
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Go to the next step.
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8
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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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9
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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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