Diagnostic Procedures
- If powertrain diagnostic system check has already been performed, go to next step. If powertrain diagnostic system check has not been performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC SYSTEM CHECKS.
- Reprogram PCM using correct software. See PROGRAMMING . If DTC P0602 resets, go to next step.
- Replace PCM. Program replacement PCM. See PROGRAMMING .