Fault code 33 - need to replace ECU

[godminus]

Hi guys

I'll try to make it short - I got a fault code 33 on my hud and my mechanic said that I need to replace the ECU.

Either way:
I ordered a used set (ECU, Ignition switch, fuel tank hatch, seat lock mechanism, 1 black key and 1 master (RED) key) for my bike.

Question is: Will I be able to RECODE my current black key so it will work with the new ECU?

I.e replace only the ECU, and make my current key work with the new ECU.
(I want to avoid replacing the ignition switch, fuel tank hatch etc etc)

Thanks!

EDIT: I'll answer myself.. won't be possible, as RED key will only work with new Ignition switch
Guess I'll have to replace everything

 

[FinalImpact]

How did this occur, was work being done on the bike, when is the last time it ran properly?
At glance I would swap the ignition coils and see if you get a different error code. While disconnected, ohm each lead and the secondary output/high tension lead.

So, you're not in the US and this bike has an immobilizer? The ECM is pretty robust. Odd that it would fail. Does the engine run?

 

[godminus]

How did this occur, was work being done on the bike, when is the last time it ran properly?
At glance I would swap the ignition coils and see if you get a different error code. While disconnected, ohm each lead and the secondary output/high tension lead.

So, you're not in the US and this bike has an immobilizer? The ECM is pretty robust. Odd that it would fail. Does the engine run?

Bike was outside (covered) while it was snowing for a few days.
I kept it clear of snow though. After 3 days when the snow stopped I went outside and gave it a few minutes to warm up (had the engine running for a few mins)

After 5 days when ice was gone, I drove to the office with the bike
when I wanted to leave the office - I started the engine, and while I was putting my helmet on I noticed that suddenly the engine light turned out and it showed error 33 - engine wasn't running correctly either. Turned it off, turned it on - worked well, but after 30 seconds it showed err 33 again

Opened up the fuel tank, was thinking maybe the wiring were messed up
I noticed that when I touched the ECU (a gentle press) the problem goes away and when I lift my finger - it starts again - I thought maybe it's a loose connector so I unplugged the ECU and plugged it back, turned the engine on and everything went well.

Bike was fine for the coming week, until friday came and on my way to the garage suddenly the engine light turned on and whoops err 33 again.

My mechanic said that he's sure it's the ECU (actually, I won't believe it until I test everything for myself) - he switched between the coils and got the same error (err 33) so it's not the coil. I thought to myself maybe it's the wiring, but I want to believe he DID check the wiring.

 

[Hellgate]

I don't think it's the ECU. It's probably moisture in the ignition wire. I'd suggest taking it apart and drying it.

Here's many of the Yamaha Fault Codes:

11 - No normal signals are received from the cylinder identification sensor when the engine is started or while the vehicle is being driven.

12 - No normal signals are received from the cranshaft position sensor.

13 - Intake air pressure sensor: open or short circuit detected.

14 - Intake air pressure sensor: hose system malfunction (clogged or detached hose.)

15 - Throttle position sensor (for throttle valves): open or short circuit detected. Throttle position sensor (for throttle valves) coupler connection is loose.

17 - EXUP servo motor circuit: open or short circuit detected or loose connection.

18 - EXUP servo motor is stuck.

19 - Open circuit is detected in the input lead from the sidestand switch to the ECU.

20 - When the main switch is turned to "ON", the atmospheric pressure sensor voltage and intake air pressure sensor voltage differ greatly.

21 - Coolant temperature sensor: open or short circuit detected.

22 - Air temperature sensor: open or short circuit detected.

23 - Atmospheric pressure sensor: open or short circuit detected.

24 - No normal signal is received from the o2 sensor.

30 - Latch up detected. No normal signal is received from teh lean angle sensor.

33 - Open circuit detected in the primary lead of the cylinder #1 ignition coil.

34 - Open circuit detected in the primary lead of the cylinder #2 ignition coil.

35 - Open circuit detected in the primary lead of the cylinder #3 ignition coil.

36 - Open circuit detected in the primary lead of the cylinder #4 ignition coil.

39 - Open ciruit detected in a primary injector.

40 - Open circuit detected in a secondary injector.

41 - Lean angle sensor: open or short circuit detected.

42 - No normal signals are received from the speed sensor.
- Neutral switch: open or short circuit detected.

43 - Power supply to the injectors and the fuel pump is not normal.

44 - An error is detected while reading or writing on EE-PROM (CO adjustment value).

46 - Power supply is not normal.

50 - Faulty ECU memory. (When this malfunction is detected in teh ECU, the fault code number might not appear on the meter.)

59 - Throttle position sensor (for throttle cable pulley): open or short circuit detected. Throttle position sensor (for throttle cable pulley) coupler connection is loose.

60 - Throttle servo motor: open or short circuit detected. Defective throttle servo motor. Malfunction in ECU (servo motor driving system).

Er-1 - No signals are received from the ECU.

Er-2 - No signals are received from the ECU within the specified duration.

Er-3 - Data from teh ECU cannot be received correctly.

Er-4 - Non-registered data has been received from the meter.

 

[Hellgate]

Here's a few more codes:

02 : Atmospheric pressure given in mmHg (normal is 760 - average weather)
03 : Differential pressure between air and intake pipe
05 : Air intake temperature (in Celcius)
06 : Cooling liquid temperature (in Celcius)
07 : Absolute speed (must be 000 in garage). Check with rear weel.
08 : Lean angle safety switch control - must be from 0.4-1.4 (upright) to 3.8-4.2 (horizontal). DISMOUT THE SWITCH FOR CHECKING !!!
09 : Battery voltage - must be above 12.0
20 : Side stand switch - displays ON or OFF
21 : Neutral gear switch - displays ON or OFF

Part II : ECU memory check.

60 : EEPROM error code presence - 00 means no default, 01 or 02 means default on corresponding cylinder (blinks if both cylinders).
61 : Error Code memory log - Displays 00 if no error code in memory, displays the Error Code if any (11 to 50). Display changes every two seconds if more than one Error Code in memory, then start again from first.
62 : Displays the number of Error Code in memory. To clear the memory, switch the Engine Run Switch to ON position (no backup).
70 : Check Code number, display from 0 to 255

Part III : Activators - To activate, turn Engine Run switch from OFF to ON - Engine check light is activated too.

30 : Coil 1 is activated 5 times per second.
31 : Coil 2 is activated 5 times per second.
36 : Injector 1 solenoid is activated 5 times per second.
37 : Injector 2 solenoid is activated 5 times per second.
48 : Air duct solenoid is activated 5 times per second.
49 : Air intake solenoid is activated 5 times per second.
50 : Fuel injection relay is activated 5 times per second.
51 : Cooler fan is activated every 5 seconds.
52 : Headlight relay is activated every 5 seconds (2 seconds ON, 3 seconds OFF) - 2003+ model only.

Error Codes

Error Number 11 : Cylinder identification sensor error - DIAG mode (none)
Error Number 12 : Crankshaft posiiton sensor error - DIAG mode (none)
Error Number 13 : Air intake pressure sensor error - DIAG mode 03
Error Number 14 : Air intake duct error - DIAG mode 03
Error Number 15 : Throttle position sensor error - DIAG mode 01
Error Number 19 : Sidestand sensor error - DIAG mode 20
Error Number 20 : Air pressure sensors error - DIAG mode (none)
Error Number 21 : Coolant temperature sensor error - DIAG mode 06
Error Number 22 : Air intake temperature sensor error - DIAG mode 05
Error Number 23 : Ambient air pressure sensor error - DIAG mode 02
Error Number 24 : O2 (lambda) sensor error - DIAG mode (none)
Error Number 30 : The bike went down - DIAG mode 08
Error Number 33 : Coil 1 open circuit - DIAG mode 30
Error Number 34 : Coil 2 open circuit - DIAG mode 31
Error Number 41 : Tilt sensor error - DIAG mode 08
Error Number 42 : Speed sensor error / Neutral sensor in short-circuit - DIAG mode 07-21
Error Number 43 : Battery voltage control error - DIAG mode (none)
Error Number 44 : EEPROM read/write error - DIAG mode 60
Error Number 50 : ECU memory error - DIAG mode (none)
Error Er-1 : ECU link error
Error Er-2 : ECU link error
Error Er-3 : ECU link error
Error Er-4 : ECU link error

Following ERROR codes DO NOT allow engine to run :
11-12-19-30-41-50 and Er-1 to Er-4
Error code 11 allow engine to continue running only if fault appears after engine start.

Following ERROR codes DO allow engine to run but need immediate check because default values are taken by the ECU: 13-14-20-21-22-23-24-24-42-43-44

 

[godminus]

Thanks for the codes I went over the service manual already.. I too have the feeling that it is very unlikely that the ECU is malfunctioning. If it really had a malfunction it wouldn't work for a week and then pop up the error again.

 

[fb40dash5]

My money is on your "mechanic" being an idiot. Sorry. I work in an auto shop, and I can count the number of ECUs I've seen legitimately need to be replaced on one hand. At least one of them being because the owner decided he needed a new one, and bought an incompatible one, relegating the required part number off the correct, working original to a sea of cores... oops!

Inspect your connections at the ECU closely, being able to touch the ECU and make the light turn off is... odd. These problems are rarely a "loose connector" that you'd see or feel, more like a loose female terminal (rimshot), bent pin, corrosion, bad ground, a terminal that's loose in the housing, something like that. Haven't messed with the FZ's computer so I can't really offer you anything specific, sorry.