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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 REPAIR INFORMATION AVAILABILITY
• Verify related Service Bulletins and/or on-line repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair 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 EXHAUST GAS TEMPERATURE SENSOR No.4 CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the exhaust gas temperature sensor No.4 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 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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5
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INSPECT EXHAUST GAS TEMPERATURE SENSOR No.4 SIGNAL CIRCUIT FOR SHORT TO GROUND
• Verify that the exhaust gas temperature sensor No.4 and PCM connectors are disconnected.
• Inspect for continuity between exhaust gas temperature sensor No.4 terminal A (wiring harness-side) and body ground.
• 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 exhaust gas temperature sensor No.4 terminal A and PCM terminal 1DU.
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 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.
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 EXHAUST GAS TEMPERATURE SENSOR No.4 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
• Verify that the exhaust gas temperature sensor No.4 and PCM connectors are disconnected.
• Inspect for continuity between exhaust gas temperature sensor No.4 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 temperature sensor No.4 terminal A—PCM terminal 1DU
• Exhaust gas temperature sensor No.4 terminal B—PCM terminal 1DR
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 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 EXHAUST GAS TEMPERATURE SENSOR No.4
• Inspect the exhaust gas temperature sensor No.4.
• Is there any malfunction?
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Yes
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Replace the exhaust gas temperature sensor No.4, then 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.
• Switch the ignition ON (engine off) and leave for 1 min.
• Start the engine and wait for 1 min.
• Display the DTCs using the M-MDS.
• Has DTC P2470:00 been recorded?
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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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