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STEP
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INSPECTION
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RESULTS
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ACTION
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1
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Note
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• When the diesel particulate filter lamp illuminates frequency, it explains using owner's manual to the customer the cause the running condition even if the procedure is executed.
Connect the WDS or equivalent to the DLC-2.
Turn the engine switch to the ON position.
Retrieve any DTCs.
Are any DTCs displayed?
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Yes
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DTC is displayed:
Go to the appropriate DTC test.
Communication error message is displayed:
Inspect the following:
• Open circuit between PCM control relay and PCM terminal 119 or 120
• Open circuit PCM control relay and PCM terminal 105
• PCM control relay stuck open
• Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117)
• Poor connection to vehicle body ground
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No
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No DTC is displayed:
Go to the next step.
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2
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Perform the following;
• Injection amount correction
• Diesel particulate filter manual regeneration procedure
• Diesel particulate filter assessment procedure
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Go to the next step.
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3
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Inspect the connection of the hose at the exhaust gas pressure sensor.
Is the hose connected properly?
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Yes
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Go to the next step.
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No
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Reconnect the hose properly, then go to the next step.
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4
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Inspect the engine oil amount.
Is the engine oil amount above the X line on the dipstick?
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Yes
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Replace the specified engine oil.
Perform the engine oil initialize procedure.
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No
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Go to the next step.
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5
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Does the engine oil initialize procedure each engine oil replacements?
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Yes
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Troubleshooting completed, go to the next step.
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No
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Perform the engine oil initialize procedure.
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6
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Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
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- If the vehicle is repaired, troubleshooting completed.
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- If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.
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