Scan Tool Diagnostics

1. To enter the scan tool diagnostics connect the scan tool to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the scan tool menu.
2. If the scan tool does not power up, refer to the scan tool manual.
3. Perform the DATA LINK DIAGNOSTIC TEST. If the scan tool responds with:

CKT914, CKT915 or CKT70-ALL ECUS NO RESP/NOT EQUIP, REFER to Module Communications Network (Information Bus).

NO RESP/NOT EQUIP for Hybrid Electronic Instrument Cluster (HEC), go to Pinpoint Test A. Test A: No Communication With the Hybrid Electronic Instrument Cluster

System passed, retrieve and record the continuous Diagnostic Trouble Code (DTCs) erase the continuous DTCs and carry out self-test diagnostics for the HEC.
4. If the DTCs retrieved are related to the concern, go to the HEC Diagnostic Trouble Code (DTC) index. Trouble Code Diagnostic Charts - Instrument Cluster
5. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Diagnosis By Symptom - Instrument Cluster