Toyota 7FBRE:
7FBRE 16-1 2001 Slow drive and multiple fault codes

Hi all, My little truck is poorly SN 557729AT - diesel mechanic so not used to Elecy forklifts but fine fault finding wth some pointers. Does about 4hrs a week. Codes 59, 104, 231, 134, 211, 125. I would say 231 and 125 are the most common although 125 will be older. About 6 months ago i put new graphite bushes in the Ametek steer potetiometer on the back of the wheel. Steers fine but lost the calibration for steer position. Drives very slowly in fnr and a bit juddery. Hydraulics work fine unless I go too fast and it puts up a safety stop and and code. checked continuety and bypassed the left hand saftey pedal micro switch - no difference. An aquantence has suggested the A5 card. 1) where is this? is visual damage often evident? 2) can these be checked and repaired? Anyone got recommendation on someone to check/repair/replace cards if this is at fault? North Notts Uk. Many thanks
  • Posted 3 Aug 2023 17:28
  • Discussion started by Richard_Sharpe
  • United Kingdom
Sharpy
Showing items 1 - 6 of 6 results.
So Batteries were knackerd - I've had them replaced with brand new - I just thought chasing faults was a bit pointless until that was sorted. So a rather expensive excersise later, brand spankers across the board. Now I still have my Fault code history so I assume there's a sub battery/memory somewhere. My Hydraulcs fire up and down far quicker than before and no fault code or stops are triggered but I still have very slow drive. I've adjusted the Mag pick ups (x2) for the steering position and I now have the wheel indication/location back. Is there a way to clear codes (if only for a short time) to assess if my drive motor can move fwd/rev normally to at least provie that is ok and it's more ont he fault code/control side? I'm not getting very far withfinding competent people who'l plug in and diagnose. Hold a few buttons down, press brake pedel twice kind of affair to clear codes?
Sharpy
So I had the battery pack on charge overnight. Been getting just over 48v at the main terminals with no load. Lifting the forks slowly drops the voltage to 38-40v. Now I've checked each 2v unit (with no load) and 14 are a touch above 2v - say 2.03 and the remainng 10 are at 1.93v-1.97v. What is weird though is that I know the charger has been kicking on and off overnight and shows green in the morning (It then performed these tests) but the gauge on the forklift was orange/half way adn then just now red/very low even though the forklift as just raised the mast slowly a couple of times. no real work to load/drain the batteries in such a short timeframe. Can their be a massive drain on the batteries? Is this an indication they're knackered? Should I see what the voltage drops to on each 2v unit so see if any inparticular drop very low? Cheers
Sharpy
Thanks DaCarr. So just been out to it - Battery level is indicating half way (should I chuck it on charge overnight to check the load test?) So main +ve and -ve from the battery pack shows 46v currently with no services requestd. When I apply slow lift, this drops to on average 36v. If I request more flow/speed I get the fault code and the forklift stops. At this point I get around 33v. Is it worth me going through each battery now? I have similar but not the same size battery packs from a sissor lift that are larger 12v deep soak battery packs but not looked at these in a few years. Many thanks
Sharpy
First test the whole battery, with a multimeter, directly on the conector, staff lifting slowly until error appears. Voltagem shouldn t drop below 40 volt.
Ir it drops, you can check each individual cell in the Middle of the screw, there is a small hole
  • Posted 3 Aug 2023 18:41
  • Reply by dacarr83
  • Portugal
Thanks, I have been through and topped up with water. I load test 12v individual batteries for tractors with a hand held unit. Can't do a bank thpugh - can I use my load test on each individual battery cell and assess if some/all are knackered? Ta
Sharpy
Good morning

Error 125, faulty steering motor
For the other codes, smells like a battery problem, check first under load.
  • Posted 3 Aug 2023 18:06
  • Reply by dacarr83
  • Portugal

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Fact of the week
The now-ubiquitous 'Keep Calm and Carry On' phrase was coined by the British government in 1939 to encourage its citizens to stay strong. Posters with the slogan were printed but never officially issued and only unearthed in 2000.