Without Scan Tool

Data Link Connector (DLC):

Selective ride DTC(s) may only be read with the vehicle stopped and grounding terminal "3" of the Diagnostic Link Connector (DLC). Observe the "SERVICE RIDE CONTROL" indicator with the ignition switch in "RUN." The DTC(s) are comprised of two digits. A digit is read by counting the number of flashes that occur within a half second of each other. The second digit will appear about one second after the first digit has gone. Each DTC will repeat three times before the next DTC begins with a three second pause between DTC(s). The entire trouble DTC sequence will reappear as long as terminal "3" is grounded. The DTC display begins by showing DTC 12 three times, marking the beginning of the sequence.

If the diagnostic mode cannot be entered (no DTC(s) appear, not even DTC 12), refer directly to the "DTC(s) Cannot Be Read" chart. Component Tests and General Diagnostics