!HILL (C1732), TC, ABS Lights

InfiniteReality

Registered
Haven’t been on in a while, for some reason this year I stopped receive all (not just the ORG) forum emails (yet to figure out why, GMail settings are fine), surgery, new job….and, of course, family life. After C3/C4 were fully fused in May, I was able to get back on 2 wheels. Post is on the long side, but wanted to be as detailed as possible in hopes someone can provide some VERY MUCH appreciated advice.

WHAT HAPPENED
I washed the bike 2 weeks ago, sat a week for no riding since had neck injections and the HILL (C1732 code), TC and ABS lights on my dash on first ride. These code/lights pop up every time after starting the bike, but have mode selection available. After leaving my driveway and going into 2nd gear mode section gets blanked out. Bike has limited power (~25% power with LF light if roll throttle too much), but does get up to interstate speeds. On day 3 of riding as it is, wife’s SUV is in the shop for AC repair and she’s been driving my car and forced to ride the “spare” vehicle, lol.

WHAT I’VE TRIED
- Disconnected the battery for 30min and reconnected.
- Battery charger (NOCO said all was good).
- Ran “repair” on NOCO charger.
- Unplugged the rear sensor all together, no change.
- Purposely put the sensor out of alignment, CEL, SD & FI codes showed up. Pic attached of scanner code.
- Inspected rear sensor end plug.
- Raised tank to check other end of the rear sensor extension harness.
- Visually inspected ABS stuff while tank was propped up, all looked fine.

DONE IT ONCE BEFORE
Did it this year, after washing it as well. Threw same codes plus CEL, SD and FI. Seemed to ride the same as it does now. Realized the rear wheel speed sensor bolt was a tad loose and when washing it I apparently pushed it forward a little so was out of alignment with the slotted ring. Moved/tightened sensor back into proper alignment, scanner cleared the SD, FI & CEL and has been fine for several hundred miles…until I washed it again. Over those miles I was caught in a hard rain for last 10 miles home, no issues then or after. I rode another couple tanks of gas without issue.

BIKE HISTORY
My bike has 7k miles currently, I’ve put 6k on it over after “the build” over the past 1.5yrs. ~400 miles between this issue popping up. Bike isn’t wildly modified, +4 arm, 240 tire, HD rear spring. Definitely not an aggressive rider, but obviously do have fun rolling the throttle when I can.

MY THINKING (ALTHOUGH GAMBLING)
- New battery? Almost 3yrs old.
- New rear wheel sensor?
- New extension for rear wheel sensor?
- ABS module?

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This is a little discombobulated, but this is what the manual says on page 1A-98



DTC P2158
DTC Detecting Condition and Trouble Area
DTC detecting condition
P2158: Vehicle Speed Sensor "B"
Any of the following conditions is met, at motorcycle
deceleration.
. Rear wheel speed is 0 km/h (0 mile/h) for a few
seconds or more, at motorcycle deceleration.
. Rear wheel speed is 0 km/h (0 mile/h) for a few
seconds or more although the front wheel speed is
higher than 10km/h (6 mile/h).
• Rear wheel speed signal does not become stable .
(3 DIC detection logic)
Wiring Diagram
.
.
Engine General Information and Diagnosis: 1A-98
BENM10L31104050
Trouble area
Rear wheel speed sensor
Rear wheel speed sensor circuit
• ABS control unit / HU
. ECM
Refer to "Engine Control System Wiring Diagram" (Page 1A-6).
1
2
Troubleshooting
Step 1
ABS DTC check.
3
I"\ I
LJ I
U'
...
..,.
1. Front wheel speed sensor
2. Rear wheel speed sensor
1) Check that DTC is detected in ABS. <?(Page 4E-
15)
Is the DTC detected?
Yes Go to troubleshooting for DTCs. Refer to
"OTC Table" in Section 4E (Page 4E-18).
No Go to Step 2.
Step2
Speed sensor signal circuit check (From ABS
control unit to ECM)
1) Turn the ignition switch OFF.
2) Disconnect the ECM coupler "A" and ABS control
unit / HU coupler.
• ECM coupler "A": '°"(Page 1 C-2)
• ABS control unit / HU coupler: <F(Page 4E-50)
3) Check for proper terminal connection to the ECM
coupler "A" and ABS control unit / HU coupler.
4) If connections are OK, check the following points.
I B1/B----t
B1/W---t
4
5V
T47--..... I.
5V
T45--..... I
 
Didn't think about the front speed sensor, I'll inspect this evening.

I'm thinking the same about battery and know new vehicles are finicky. A new battery needs to happen soon either way, so wouldn't be a gamble to purchase. Nothing is fun about dead bike battery when out and about.

Thanks for manual reference! Definitely hard to follow but will pull mine out and refer to.

Thanks for the feedback!!
 
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