129.3 OPTIMIZED IDLE See Figure 129-8 for the Optimized Idle overall system schematic.

129.2 FAN CONTROL DDEC VI provides fan control for four different fan configurations. 129.2.1 Single-speed Fan – Fan Type 4 This fan type must be…

See Figure 129-1 for a diagram of the Cruise Control circuit.

This fault typically arises from operating under extreme load and high ambient temperatures and/or high altitude operation. 128.2.1 Temperature Warning Check128.1.1.1. Check as follows: 1.…

This fault typically results from high load operation in high ambients. No action is necessary (this is a “silent” fault, the fan will be turned…

This diagnosis is typically proportional valve bank 2 circuit failed low. 125.1.1 Circuit Check Check as follows: 1. Turn the ignition ON (key ON, engine…

This fault is typically one of the following: □ DPF Regen Inhibit Switch message contains a data error indicator □ DPF Regen Force Switch message…

This fault is typically one of the following: □ DPF Regen Inhibit Switch message not received this ignition cycle □ DPF Regen Force Switch message…

This fault is typically one of the following: . □ DPF Regen Inhibit Switch message contains a SNV indicator □ DPF Regen Force Switch message…

This fault is typically one of the following: □ DPF Regen Inhibit Switch message stopped arriving □ DPF Regen Force Switch message stopped arriving 123.1.1…