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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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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 P242F, P252F, P253F or P2458 is displayed:
Go to the next step.
Other 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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Inspect the engine oil amount.
Is the engine oil amount above the X line on 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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3
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Monitor the PM_ACC, PM_GEN and PM_ACC_DSD PIDs using the WDS or equivalent.
Are monitored values 8 g/L or less?
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Yes
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Go to Step 12.
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No
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If each PIDs value are 11 g/L or less;
Go to the next step.
If each PIDs value are above 11 g/L;
Go to Step 5.
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4
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Perform the following;
• Injection amount correction
• Diesel particulate filter manual regeneration procedure
Retrieve any DTCs.
Is DTC P2428 detected?
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Yes
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Go to DTC P2428 diagnostic procedure.
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No
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Go to Step 12.
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5
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Monitor the PM_ACC, PM_GEN and PM_ACC_DSD PIDs using the WDS or equivalent.
Is one of the PID monitored value 15 g/L or less?
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Yes
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Go to the next step.
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No
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Replace the diesel particulate filter, then go to Step 10.
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6
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Perform the following;
• Injection amount correction
• Diesel particulate filter manual regeneration procedure (long mode)
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-
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Go to the next step.
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7
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Verify that the diesel particulate filter lamp condition.
Does the diesel particulate filter lamp illuminate?
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Yes
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Go to the next step.
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No
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Go to Step 12.
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8
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Perform diesel particulate filter manual regeneration procedure.
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-
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Go to the next step.
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9
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Retrieve any DTCs.
Is DTC P2428 detected?
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Yes
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Go to DTC P2428 diagnostic procedure.
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No
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Go to Step 12.
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10
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Perform the following;
1. Diesel particulate filter data reset
2. KOEO self-test
3. Diesel particulate filter reset
4. Injection amount correction
5. Diesel particulate filter manual regeneration procedure
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-
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Go to the next step.
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11
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Retrieve any DTCs.
Is DTC P2428 detected?
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Yes
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Go to DTC P2428 diagnostic procedure.
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No
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Go to the next step.
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12
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Perform diesel particulate filter assessment procedure.
Does diesel particulate filter assessment procedure operate properly?
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Yes
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Go to the next step.
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No
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Reinspect from step 1.
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13
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Clear the DTC from PCM memory.
Verify the diesel particulate filter lamp condition.
Does the diesel particulate filter lamp illuminate?
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Yes
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Go to step 1.
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No
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Troubleshooting completed, go to the next step.
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14
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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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