How to read the FI (fault indicator) light on the GL1800


Step-by-step tutorials on how to maintain and fix your GL1800
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WingAdmin
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How to read the FI (fault indicator) light on the GL1800

Post by WingAdmin »



This has been posted a few times, so I thought I would put it somewhere where it can be easily found.

If FI (Fault Indicator) light comes on pull over but DO NOT shut bike off. Put in neutral and put side stand down, RPM’s below 1500. This signals the ECM to send the error code to the FI light. Count the number of long and short flashes. This will give you the error code.

If you shut the bike off the error code is lost - sort of. It will be retained in the ECM but it is harder to get out. If the bike stops and the will not restart you can get the FI light to flash the error code by cranking the engine for 10 seconds. The FI light will then flash the error code.

Long Blink = 10 Short Blink = 1
i.e. long long long short short short = 33 check error code 33

Number of MIL blinks .Symptoms .Cause

0 No blinks • Engine does not start

• Open circuit in the power input and ground wires of the ECM: • Faulty bank angle sensor
• Open circuit in bank angle sensor related wires: • Faulty FI IGN relay: • Open circuit in FI IGN relay related wires
• Faulty engine stop switch: • Open circuit in engine stop switch related wires: • Faulty ECM: • Blown FI IGN fuse (20 A)
• Blown ST. KILL fuse (10 A):

0 No blinks • Engine operates normally
• Open circuit in MIL wire: • Faulty combination meter: • Faulty ECM


0 Stays lit • Engine operates normally
• Short circuit in service check connector wire: • Short circuit in MIL wire: • Faulty ECM


1 Blinks • Engine operates normally
• Loose or poorly connected MAP sensor connector: • Open or short circuit in MAP sensor wire: • Faulty MAP sensor


7 Blinks • Hard to start at a low temperature (ECM controls using preset value; coolant temperature: 85° C/185° F)
• Loose or poorly connected ECT sensor connector: • Open or short circuit in ECT sensor wire: • Faulty ECT sensor


8 Blinks • Poor engine response when operating the throttle quickly (ECM controls using preset value; throttle opening: 0° )
• Loose or poorly connected TP sensor connector: • Open or short circuit in TP sensor wire: • Faulty TP sensor


9 Blinks • Engine operates normally (ECM controls using preset value; intake air temperature: 28° C/82° F)
• Loose or poorly connected IAT sensor connector
• Open or short circuit in TP sensor wire: • Faulty IAT sensor


10 Blinks • Engine operates normally at low altitude
• Engine idles roughly at a high altitude (ECM controls using preset value; barometric pressure: 760 mm Hg/1,013 hPa)
• Loose or poorly connected BARO sensor connector: • Open or short circuit in BARO sensor wire: • Faulty BARO sensor


11 Blinks • Engine operates normally
• Loose or poorly connected vehicle speed sensor connector
• Open or short circuit in vehicle speed sensor wire: • Faulty vehicle speed sensor


12 Blinks • Engine does not start
• Loose or poorly connected No. 1 injector connector: • Open or short circuit in No. 1 injector wire: • Faulty No. 1 injector


13 Blinks • Engine does not start
• Loose or poorly connected No. 2 injector connector: • Open or short circuit in No. 2 injector wire: • Faulty No. 2 injector


14 No blinks • Engine does not start
• Loose or poorly connected No. 3 injector connector: • Open or short circuit in No. 3 injector wire: • Faulty No. 3 injector


15 Blinks • Engine does not start
• Loose or poorly connected No. 4 injector connector: • Open or short circuit in No. 4 injector wire: • Faulty No. 4 injector



16 Blinks • Engine does not start
• Loose or poorly connected No. 5 injector connector: • Open or short circuit in No. 5 injector wire: • Faulty No. 5 injector


17 Blinks • Engine does not start
• Loose or poorly connected No. 6 injector connector: • Open or short circuit in No. 6 injector wire: • Faulty No. 6 injector


18 Blinks • Engine does not start
• Loose or poorly connected camshaft position sensor connector
• Open or short circuit in camshaft position sensor wire: • Faulty camshaft position sensor


19 Blinks • Engine does not start
• Loose or poorly connected ignition pulse generator connector:
• Open or short circuit in ignition pulse generator wire: • Faulty ignition pulse generator


21 Blinks • Engine operates normally
• Open or short circuit in right O2 sensor wire: • Faulty right O2 sensor


22 Blinks • Engine operates normally
• Open or short circuit in left O2 sensor wire: • Faulty left O2 sensor


23 Blinks • Engine operates normally
• Open or short circuit in right O2 sensor heater wire: • Faulty right O2 sensor


24 Blinks • Engine operates normally
• Open or short circuit in left O2 sensor heater wire: • Faulty left O2 sensor


25 Blinks • Engine operates normally
• Loose or poorly connected right knock sensor connector: • Open or short circuit in right knock sensor wire: • Faulty right knock sensor


26 Blinks • Engine operates normally
• Loose or poorly connected left knock sensor connector: • Open or short circuit in left knock sensor wire: • Faulty left knock sensor

29 Blinks • Engine stalls, hard to start, rough idling
• Loose or poorly connected idle air control (IAC) valve connector: • Open or short circuit in IAC valve wire: • Faulty idle air control valve


33 Blinks • ECM does not hold the self diagnostic data
• Faulty E2-PROM in ECM • Engine operates normally


41 No blinks • Engine operates normally
• Loose or poorly connected connector in gear position switch related circuits
• Open or short circuit in gear position switch wires: • Faulty gear position switch: • Faulty clutch switch: • Faulty side stand switch


55 Blinks • Engine operates normally
• A/F sensor HIC (Hybrid Integrated Circuit) malfunction


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Re: How to read the FI (fault indicator) light

Post by Viking »

Great information. I do have a question which may be of importance. In your final entry of 41 (no blinks?). Should this in fact say "41 blinks"? Or am I misunderstanding something? Thanks for the article.
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Re: How to read the FI (fault indicator) light on the GL1800

Post by uffe1985 »

my 1800 year 2016 starts every time, runs perfekt but betwen 1400-2000 rpm it misfires just feels like ignition dont go all the way or no gasoline all the way
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Re: How to read the FI (fault indicator) light on the GL1800

Post by alwrmcusn »

I have a 2008 GL1800 Navi. I keep hearing about the "F1 Lights". Where is this located? Any photos" If it lights up does it remain on or just blink and then disappear?
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Re: How to read the FI (fault indicator) light on the GL1800

Post by DaveO430 »

alwrmcusn wrote: Sun May 19, 2019 7:24 am I have a 2008 GL1800 Navi. I keep hearing about the "F1 Lights". Where is this located? Any photos" If it lights up does it remain on or just blink and then disappear?
It is on the right side of the dash below the temp and fuel gauges. It should come on for a couple seconds when you turn the key on then go off. If it has a fault it will come on and stay on.
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WingAdmin
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Re: How to read the FI (fault indicator) light on the GL1800

Post by WingAdmin »

alwrmcusn wrote: Sun May 19, 2019 7:24 am I have a 2008 GL1800 Navi. I keep hearing about the "F1 Lights". Where is this located? Any photos" If it lights up does it remain on or just blink and then disappear?
From 2001-2005 it is located in the center gauge cluster, on the right:

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On later bikes it is on the right side, second light from the right:

2006+ Gauges
2006+ Gauges

Wingbangdoodle
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Re: How to read the FI (fault indicator) light on the GL1800

Post by Wingbangdoodle »

My F1 light comes on . I pull over . Put into neutral....nuetral light does not come on but is in nuetral. And the bike turns off when i put the side stand down. Like it not even in nuetral. Also the reverse light is blinking at a fast rate of speed. Whats going on with my wing? I saw no senerio where any of these things happen all together like this. Please help...
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Re: How to read the FI (fault indicator) light on the GL1800

Post by Wingbangdoodle »

Yeah checked all the fuses again....no corrosion or tranished anything could be found.... no one has had this no nuetral indicator light while the Rev light blinks away all fast, and the side stand kills the bike when put down even though its IN the nuetral position ??? Or is my wing an overachiever and just making up its own new codes to make me go insane or worse... sell the wing and buy an older bike with a shat ton less wires?? The amount of lil tiny wires on this bike is ridiculous and fusterating even to look at much less trying to figure out what each one does...


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