ECM Snapshot
NOTE:
If directed here from TEST TYPE SELECTION under MANUAL OPERATION OF SELF-DIAGNOSTICS in this article, go to step 2).
- SNAPSHOT allows the recall of system operating specifications present at the exact time an ECM malfunction code was set. Up to 3 snapshots may be recalled. In addition, one snapshot may be triggered on demand. To enter snapshot, complete the following:
- Enter self-diagnostics. See ENTERING SELF-DIAGNOSTICS .
- Display trouble codes stored in memory. See DISPLAYING TROUBLE CODES .
- Select ECM system for testing. See SYSTEM SELECTION .
- Select SNAPSHOT test type. See TEST TYPE SELECTION
.NOTE: To cancel snapshot test type selection and activate a repeat of the specific test type selection process, depress the OFF button on ECCP.
- Immediately following the selection of SNAPSHOT?, the system will display the message SNAP DONE. This message appears for 3 seconds to indicate all ECM data and inputs have been stored in memory. Following this 3 second information storage verification, the display will automatically proceed to the first available snapshot test type (i.e., SNAP DATA? or SNAP INPUTS?).
- At this point, depressing the FAN DOWN button will display the next available snapshot test type. Display may be toggled between SNAP DATA? and SNAP INPUTS?.
- Depressing the FAN UP button with SNAP DATA? or SNAP INPUTS? displayed will select that particular test type.
- At this point, the display is controlled as it would be for non-snapshot data and inputs displays, however, all values and status information represents memorized vehicle conditions. See EXPLANATION OF SPECIFIC TEST SELECTION and MAKING SPECIFIC TEST SELECTION .
- Depressing the FAN UP button, with SNAP EC? displayed, will display the SNAP DONE message to indicate that new information has been stored in memory.