Note. For connector terminal identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see RAM VAN & RAM WAGON wiring diagram in WIRING DIAGRAMS article.
Note. DTC P0601: INTERNAL CONTROLLER FAILURE is monitored with ignition on. DTC may be stored in Powertrain Control Module (PCM) when PCM senses internal checksum for software failed, does not match calculated value. Possible causes are: defective PCM.
Turn ignition on, with engine off. Using scan tool, read DTCs. If DTC P0601: INTERNAL CONTROLLER FAILURE is present, replace PCM. Perform TEST VER-2A. If DTC P0601: INTERNAL CONTROLLER FAILURE is not present, test is complete.