Timing Characteristics:<\/p>\n\n\n\n
- \n
- Pump Pulse On-time: 0.5 to 3 seconds<\/li>\n\n\n\n
- Pump Pulse Off-time: 2 to 14 seconds<\/li>\n\n\n\n
- Initialization time: less than 0.5 seconds<\/li>\n\n\n\n
- After-run: 10 to 270 seconds<\/li>\n<\/ul>\n\n\n\n
Connections:<\/p>\n\n\n\n
- \n
- BAT — Battery Connection<\/li>\n\n\n\n
- IGN — Ignition Connection<\/li>\n\n\n\n
- GND — Ground Connection<\/li>\n\n\n\n
- PUMP — Pump relay ground for activation coil<\/li>\n\n\n\n
- FAN — Fan relay ground for activation coil<\/li>\n\n\n\n
- OVER — Overheat warning device ground (less than 0.25A)<\/li>\n\n\n\n
- T+ — Thermistor Connection<\/li>\n\n\n\n
- T- — Thermistor Connection<\/li>\n<\/ul>\n\n\n\n
![\"Coolant](\"https:\/\/endurancetested.com\/wp-content\/uploads\/2025\/10\/CSC-diagram-1024x458.png\")
Coolant System Controller wiring diagram<\/figcaption><\/figure>\n\n\n\n LED Activation triggers:<\/p>\n\n\n\n
- \n
- Green — 9 volt power is on<\/li>\n\n\n\n
- Blue — Pump relay grounding active<\/li>\n\n\n\n
- Yellow – Fan relay grounding active<\/li>\n\n\n\n
- Red – Overheat grounding active<\/li>\n\n\n\n
- Green, Blue, Yellow and Red (engine not overheating) — Open wire to thermistor<\/li>\n\n\n\n
- Blue, Yellow and Red — Circuit failure<\/li>\n<\/ul>\n\n\n\n
Jumper configurations:<\/p>\n\n\n\n
- \n
- JP1 — Enable on-board Thermistor emulator. The thermistor must be disconnected from T+ if JP1 is shorted.<\/li>\n\n\n\n
- JP2 — Shorted will disable After-run<\/li>\n\n\n\n
- JP3 — Shorted will enable the Pump during After-run (Fan only otherwise)<\/li>\n\n\n\n
- JP4 — Open will extend the range of the Off-time pulse from 2 to 8 seconds to 8 to 14 seconds. <\/li>\n<\/ul>\n\n\n\n