Continuing the theme of posting up stuff that might be of use to other owners. Steering wheel related activities for a 2022 Suzuki Carry. This also includes some details relating to the steering angle sensor and DTC codes that you might encounter when messing around with your Suzuki. For quick reference: Steering Wheel Nut torque: 33Nm Steering Angle Sensor Part #:37440-71L1 DTC codes: C1024 C1075 C1163 C116A C1731 C1023-81 C1025-81 Order of operation: Disconnect battery Remove steering wheel centre/airbag Remove steering wheel do what you gotta do Reset clock spring Reinstall steering wheel Reinstall airbag/centre Reconnect battery Tools Required: 10mm socket 17mm socket Ratchet PH2 screwdriver Steering wheel removal tool Torque wrench Tweezers ~6mm diameter bar/rod/allen key ~150-200mm long ODB-II or SDT-ii diagnostic tool that can read live data from the ECU FIRST STEP. DISCONNECT YOUR BATTERY. I cannot stress this enough. You will be messing with the airbags, and unless you enjoy playing with grenades with no pins... I strongly encourage you to heed this warning. Remove the retaining pins on either side of the battery cover (be gentle with these as they like to snap) Remove battery cover Undo the battery terminals using a 10mm socket Put cables out of the way so they can't touch the terminals
Remove steering wheel centre/airbag Make sure steering wheel is in the neutral & straight position and you're parked on flat ground Remove the lower steering wheel clamshell with a PH2 screwdriver, held in place by a short machine screw in the centre of the clamshell (this is not definitely required, but it will make life easier if you're messing with the angle sensor and clock spring) Insert the 6mm bar into the hole located on the side of the steering wheel. you should be able to see the wire/tang/clip that you need to push on, see picture below: Gently pull on the top right side of the wheel centre/airbag and it should pop free Repeat the same steps from the passenger side. The wheel centre should then pivot forward from a lower pivoting clip Disconnect the horn connector and fully pivot the centre so that you can access the airbag connector Use the tweezers to lift the yellow locking pin from the centre of the connector. The pin is captive - don't try and remove it completely, it just needs to lift about 5-10mm to release the connector. Disconnect the airbag connector and then remove the centre/airbag and put somewhere safe
Remove steering wheel Make sure the steering wheel is still straight Loosen the steering wheel retaining nut using 17mm socket, I find you can hold the wheel in place with your knees pressed against the lower edge. Don't remove the nut entirely, this will prevent you punching yourself in the face with a steering wheel if you don't have a steering wheel puller. If you have a steering wheel puller, install and use to remove the wheel off the taper on the steering column. I 3D printed mine, for reference, the bolt holes in the steering wheel face are M8 and spaced at 60mm between centres with the retaining nut being in the middle of the two. Previous to the 3D printed version, I just used a piece of sturdy timber with some holes drilled through. If you DON'T have a steering wheel puller, make sure the nut is still on the steering column loosely before you try and pull the wheel off… aside from not punching yourself in the face with the wheel, it'll also prevent catching cables when the steering wheel releases (I broke the original airbag clip this way) Once the wheel is unseated from the taper, remove the retaining nut, set the steering wheel aside and put the retaining nut back on the column so you don't lose it. do what you gotta do you're free to do whatever it was you needed to do with the steering wheel removed...
Reset clock spring very important step if you want to avoid snapping your clock spring and causing airbag warning lights to show, ask me how i know. make sure the clock spring is seated on the steering column up against the steel backing plate hold the rear of the clock spring with one hand and use the other to gently rotate the front counter-clockwise. keep going until you can't rotate it anymore. turn the front clockwise until the connector is at the top most position turn clockwise another 2 full rotations which should end up with a) the 2 alignment arrows should be pointing at one another (lower left) b) the clock spring ribbon should be visible in the clear window (upper right) Reinstall steering wheel If you're unsure if you've reinstalled your steering angle sensor in the same orientation as it started DON'T torque the steering wheel to spec, leave the nut on loosely as you may need to pull everything apart again
Steering Angle Sensor check As noted at the top, if you fail to set the steering angle sensor, you'll be left with a bunch of codes that are very obtuse and can lead to expensive & unnecessary troubleshooting and replacement of parts Connect your diagnostic tool to the ODB-II port (I use a cloned Suzuki SDT-ii Diagnostic Tool) Turn on the ignition, just on, no need to start the engine. Navigate to the live data feed and look at the data from the "ESP" You should see a reading for your steering angle sensor This should read ZERO or within a degree or so if you have the steering wheel & wheels straight. In my case, it was reading 360°, meaning the ECU believed I had rotated the wheel an entire rotation clockwise. If you try and calibrate the sensor now, the diagnostic tool will fail to commit the change and report an error like "unexpected response from ECU" or similar. If the sensor is NOT ZERO, take note of the angle value and then turn off the ignition Remove the steering wheel and remove the clock spring I taped the clock spring & the steering angle sensor so they would definitely not move from their known position Unclip the steering angle sensor from the clock spring, there are 7 clips retaining the sensor Now the fun part, orient the steering angle sensor with the ring to the front and the connector rearward facing as it would be on the steering column If the value you saw in the live feed was positive, you want to rotate the inner section anti-clockwise If the value you saw in the live feed was negative, you want to rotate the inner section clockwise Obviously 360 would mean a full rotation... 180, a half rotation, etc. Once completed, clip the sensor back to the clock spring making sure to not mess up the orientation Check that your wheels are still actually pointed straight
Install clock spring back on steering column Loosely install steering wheel and all the connectors Connect your diagnostic tool again and check to see that you moved the sensor in the right direction. If you're close to ZERO then you can clear the DTC codes Once the codes are cleared, go to the Utility part of your diagnostic tool, EPS > Calibrate Sensors This should then allow you set the ZERO point using the current steering angle sensor, steering wheel position and actual wheel position... and you're good to torque your steering wheel (33Nm as noted at the top) and re-assemble Next time you turn on the ignition, you should be greeted with a warning light free dashboard
If, for some reason, you've mangled your steering angle sensor (I'm not judging, I ruined 2 others in the process of this) here is the part number you want to search for. It is shared with the Suzuki Swift which means you can avoid the usual JDM parts premium [/indent] Reinstall airbag/centre Make sure to reconnect your horn as well! Reconnect battery 10mm spanner and re-install the cover Hopefully someone finds this useful... until I break the next thing, I'll leave it at that...
