Retrieve/Clear Continuous DTCs: Notes

During vehicle operation, the RCM and OCS module will detects and stores both intermittent and hard fault DTCs in nonvolatile memory. The DTC strategy employed by the RCM/OCS module incorporates a time-out scheme for determining when a concern exists in the system. This requires a concern to exist for up to one minute in the system before the RCM/OCS module will detect it. For the RCM/OCS module to determine that a concern no longer exists, the concern must be absent for up to 1 minute. The actual detection time-outs vary with each DTC. The DTCs can be retrieved with the IDS or equivalent tester. Any DTCs stored in the RCM/OCS are displayed on the IDS or equivalent tester along with a brief description of the DTC. If no DTCs are present, the IDS or equivalent tester displays a SYSTEM PASSED message. This option can also be used to clear DTCs from the RCM/OCS memory, as long as the concern no longer exists. Once 128 key cycles have been recorded by the OCS module since the concern was last detected, the DTC will automatically be removed from memory. Once 75 hours of operation have been recorded by the RCM since the concern was last detected, the DTC will automatically be removed from memory. To retrieve or clear DTCs, follow these steps.

1. Connect the IDS or equivalent tester to the data link connector (DLC).
2. Turn the ignition switch to the ON position.
3. Follow manufacturer's instructions for the IDS or equivalent tester being used.
4. Select either the RCM or OCS module.
   NOTE:

   • Before proceeding with the clearing operation, make note of the DTCs displayed. Once cleared, DTCs cannot be retrieved.
5. All continuous DTCs will be displayed on the screen.
6. Clear the DTCs. After clearing the DTCs, cycle the key OFF, then ON.

• Continuous DTCs that have been cleared will not reoccur as "continuous" in the same key cycle. Only new DTCs which were not present before clearing can occur as "continuous" after cleaning.