Reading Diagnostic Trouble Codes DTC(s) With a Scan Tool
The recommended method for reading DTC(s) stored in the seat adjuster
memory modules memory is by using a scan tool plugged into the DLC connector
(located under the instrument panel on the right side). Follow the scan
tool instructions supplied by the tool manufacturer. The DTC(s) will be
stored in the memory of the seat adjuster memory module as a Current or
a History DTC.
Current Codes
The seat adjuster memory module will set the code as a current DTC under
the following conditions:
• | The seat adjuster memory module determines that the test conditions
and failure conditions for a particular DTC are true. |
• | A current ignition cycle occurs. |
All DTC(s) remain current until the following conditions exist:
• | The next fault-free ignition cycle occurs. |
• | The seat adjuster memory module determines that the test conditions
are true. |
• | The seat adjuster memory module determines that the failure conditions
are false. |
The Current code then will become a History code only when the above
conditions exist.
History Codes
When a DTC reports a failure and the failure was not in the current
ignition cycle, the DTC will be stored as a history code. The memory seat
module performs internal diagnostic tests in order to acknowledge that the
related systems have reported a pass or fail condition. Each diagnostic
test that fails is recorded in the seat adjuster memory module memory.
The seat adjuster memory module memory may be accessed with a scan tool in
order to determine which DTC circuit was at fault. A history DTC may be
cleared (for any diagnostic test) by performing any of the following procedures:
• | Cycle the ignition with no diagnostic test reporting a fail. |
| Important: Disconnecting the battery or seat adjuster memory module connector will
clear all current and history seat adjuster memory module DTC(s).
|
• | Disconnect the battery. |
• | Disconnect the seat adjuster memory module connector. |
After Diagnosis is Complete
After diagnosing a problem, in addition to repairing the discovered
malfunction, clear any DTC(s) set and verify proper operation. In order to
verify proper operation, you must duplicate the conditions when the customer's
complaint occurred. If a DTC was set, you must duplicate the test conditions
for that DTC (listed on the Diagnostic Trouble Code table). The DTC should
not re-set after the repair has been completed.