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 P1281: ENGINE IS COLD TOO LONG is monitored with engine running. DTC may be stored in Powertrain Control Module (PCM) when PCM senses engine coolant temperature does not reach 176°F (80°C) while driving for 20 minutes after start. Possible causes are: defective thermostat or cooling system problem.
Start engine and allow it to idle. Road test vehicle under normal operating conditions for 20 minutes. Using scan tool, read engine coolant temperature. If scan tool does not read at least 176°F (80°C), check thermostat and cooling system for probable causes. If scan tool reads at least 176°F (80°C), test is complete.