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long crank time, code 42
i have a doosan g25p-3 ser num kq-01185. seems to crank for a long time and throws code 42. other times it starts fast. changed plugs, wires, cap , rotor. checked coil and pick up coil, seems ok. unless the pick up coil is intermittent. code is for est low..... what is the est?
Any help appreciated.
first time posting just joined today, so far this site is the best.
  • Posted 22 Dec 2017 02:28 PM
Total replies: 2. Showing items 1 - 2 of 2 results.
  • kevin_t
  • Pennsylvania, United States
EST means Electronic spark [url removed] 42 is for low coil driver signalmor current......

EST1Low: (Electronic Spark Trigger) is a current driver signal and normally set if the signal from the SECM is shorted to ground.

Check coil driver wiring and connector for shorts SECM PIN 7(EST1) to COIL PIN A

Verify GND on COIL PIN B Verify GND on COIL PIN C Verify GND on COIL PIN D Verify 12vdc on COIL PIN E

To check the Smart Coil internal circuit disconnect the coil connector and measure the resistance from pin to pin
  • Posted 22 Dec 2017 06:41 PM
From what diagrams I have. I don't have a pin e. I also have a -2 schematic. I'm guessing that's not going to work.
  • Posted 23 Dec 2017 01:57 AM
Total replies: 2. Showing items 1 - 2 of 2 results.

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