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Diagnostic Display

Display:
The Central Control Module (CCM) utilizes the speedometer, odometer and the trip monitor located on the instrument cluster to display information while in the diagnostic mode.

Data Display:




Information Center Buttons:





The speedometer is used to display Diagnostic Trouble Codes (DTCs) from the CCM, ABS/ASR, SIR, and PCM. The odometer displays data, and the trip monitor indicates the system being tested and the test which is being performed.


The buttons on the Driver Information Center (DIC) are used to send instructions to the CCM when in the diagnostic mode.

System Faults:
There is no specific CCM lamp to indicate a fault. A code-setting fault in any of the CCM monitored systems is indicated by "SYS" (SYSTEM ERROR) flashing in the instrument cluster trip monitor. If a fault does not recur within 100 ignition cycles the CCM will automatically clear the code. The "SYS" indicator will flash 3 times every 15 seconds while a current fault code is present.

Exceptions:
Pass key fault codes 51-53 will be indicated by the "SECURITY" lamp being illuminated without the "SYS" indicator flashing. If a Fuel Enable Data Stream (FEDS) code 54 is present, the "SECURITY" indicator and "SYS" indicator will flash together, indicating the problem is related to vehicle security.

HISTORY CODES
CCM history codes are those indicating that the CCM previously detected a fault which later disappeared. The reason could be that the fault is intermittent, or that the system that the code applies to is not currently being operated. Current codes (problem exists now) and history codes (problem was detected but not currently present) are designated by a "C" or "H" respectively. If a CCM code is displayed as a history code, and the fault cannot be found easily, try clearing the codes and operating the system that the code applies to. If the code resets, it can be assumed the fault is present.

NOTE: All PCM and EBTCM codes will be displayed as history codes, whether the fault is currently present (hard failure) or not (intermittent.)
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