So I have a Takeuchi TL12, I just got it used, 2015 w/ 1140 hrs. For some reason I’m throwing a 523602FMI:0 code, which I was told has something to do with the dpf. The machine ran fine the first couple of days, then the beeping started. I called a tech and he told me how to read the code, he also told me to hold the manual regen switch for 10 seconds and nothing happened. So, I left the machine running for probably an hour and i hopped back in it and it was flashing the kill switch icon(always does when it beeps) and the dpf icon, so I held down the manual regen button, it worked, my machine is running great. Until today I cranked it and took off, about 300 yards I’m derated again and it’s beeping. Here comes the funny part, my father in law pushed some magical sequence of buttons that he doesn’t remember and made the machine regen, it ran fine for about 3 hours. I hop on it to finish up the little bit of mulching we have left, it starts beeping within 15 minutes of me getting on it. So I pull back up to the truck VERY slowly because I’m derated and decided to let it idle, I hop in and the normal kill switch style icon is alternating with the dpf icon, I hit my manual regen button and it starts it process, now it’s running fine. I’d rather go ahead and repair this than take a chance on it happening on another job. Any recommendations?
523602 0 High frequency of regeneration
(64) High Frequency of Regeneration (DTC P3024 / 523602-0)
Behaviour during malfunction:
• Worsening exhaust gas performance (NOx)
Detection item:
• Time interval from the end time to the start time of the regeneration
DTC set preconditions:
• Battery voltage is normal
• Key switch is ON
DTC set parameter:
• Regeneration time interval within 30 min. occurs three times continuously
Engine warning light:
• ON
Limp home action by engine ECU (system action):
• Output limitation: Approximately 50 % of normal condition
• EGR stop
Recovery from error:
• Key switch turn OFF
9Y1200174CRS0452US0
1. Check the Air Intake System
1. Check in accordance with "6.[1] AIR INTAKE SYSTEM
INSPECTION PROCEDURE". (Refer to page 1-S297)
NOTE
• Check the installation of the differential pressure sensor
pipes.
• Check the engine oil maintenance history
(Oil consumption).
9Y1200174CRS0580US0
2. Check the Differential Pressure Sensor (Refer to items P2454
and P2455)
1. Check the differential pressure sensor.
9Y1200174CRS0581US0
3. Check the Function of DPF
1. Operate the engine for 30 minutes in the normal condition.
9Y1200174CRS0582US0
OK Go to "2. Check the Differential Pressure Sensor (Refer to items P2454
and P2455)".
NG Repair in accordance with "6.[1] AIR INTAKE SYSTEM INSPECTION
PROCEDURE". (Refer to page 1-S297)
(1) Hose Clamp
(2) Hose
(3) Turbocharger
OK Go to "3. Check the Function of DPF".
NG Repair or replace the differential pressure sensor or its related parts.
(Follow the diagnostic procedure of items P2454 and P2455).
(1) Terminal A-VCC12
(2) Terminal A-GND11
(3) Terminal DPS
(a) Differential Pressure Sensor
Connector
Factory
specification
"DPF Regeneration Request" is not detected within 30
minutes.
OK Normal.
NG Replace the DPF assembly.
(a) DPF Manual Regeneration
Reguest Button
Give me a call at 908 305 8457 during the day. Shoot me your address and I can send you the diagnostic book .
thanks
Ed