TM 9-2320-363-20-1 Section 4 TROUBLESHOOTING CHARTS D.  CHART 25 - FAN CONTROL MALFUNCTION (Cont'd) Table 1: Fan Control Inputs and Outputs Fan Mode Fan State Fan Control Fan Control A/C Input Override Jake Brake Primary Output 1 Output 2 Input Status Control 1 Fan On Open ------- Grounded Open Not in High Engine Temp Mode Sensors Off Grounded ------- Grounded Open Not in High Engine Temp Mode Sensors On Open ------- Open Don't Not in High OEM A/C Care Mode Switch On Open ------- Don't Grounded Not in High OEM override Care Mode Switch On Open ------- Don’t Don't High Mode Jake Brake in Care Care High Mode 2 Fans 1-On Open Open Grounded Open Not in High Engine Temp 2-On Mode Sensors 1-On Open Grounded Grounded Open Not in High Engine Temp 2-Off Mode Sensors 1-Off Grounded Open Grounded Open Not in High Engine Temp 2-On Mode Sensors 1-Off Grounded Grounded Grounded Open Not in High Engine Temp 2-Off Mode Sensors 1-On Open Grounded Open Don't Not in High OEM A/C 2-Off Care Mode Switch 1-On Open Grounded Don't Grounded Not in High Override 2-Off Care Mode Switch 1-On Open Grounded Don't Grounded High Mode Jake Brake in 2-Off Care High Mode 2 Speeds Off Grounded Grounded Grounded Open Not in High Engine Temp Mode Sensors Low Open Grounded Grounded Open Not in High Engine Temp Mode Sensors High Grounded Open Grounded Open Not in High Engine Temp Mode Sensors Low Open Grounded Open Don't Not in High OEM /C Care Mode Switch Low Open Grounded Don't Grounded Not in High Override Care Mode Switch Low Open Grounded Don't Grounded High Mode Jake Brake in Care High Mode Change 3  3-345.175